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    PU2PU
  Issue-308 - May 07, 2012   Recommend
Press Releases Patents Technical Papers
LATEST TRENDS >> PRESS RELEASES
PU RAW MATERIALS>> ADDITIVES>> MOISTURE SCAVENGER
Incorez forms partnership with SpecialChem

Incorez has recently entered into a partnership with SpecialChem, the world’s largest network of chemicals and materials suppliers. SpecialChem has over 500,000 registered members in 4 main markets and attracts over 3000 new members every month. The aim of the partnership is to support the Incorez corporate communications strategy by bringing...

Company name: Incorez
Published On: Monday May 07th, 2012

 
PU RAW MATERIALS>> ADDITIVES>> FLAME RETARDANT
Testing shows treated foam offers no safety benefit

The chemical industry's leading trade group says adding fire-snuffing chemicals to furniture foam "can be the difference between life and death."But when scientists in a government lab touched a small flame to a pair of upholstered chairs — one with a flame retardant in the foam and one without — both were engulfed in flames within four minutes."We...

Company name: The American Chemistry Council
Published On: Monday May 07th, 2012

 
PU RAW MATERIALS>> ISOCYANATES
Camex approves MDI anti-dumping duties for China, US

Brazil’s Chamber of Foreign Trade (Camex) approved provisional anti-dumping duties on Thursday for methyl diphenyl diisocyanate (MDI) polymeric imports from China and the US, the government agency said on Thursday.The measure will be officially published in the next few days, Camex said.The antidumping duties would be applied during a six-month...

Company name: Brazil’s Chamber of Foreign Trade
Published On: Friday May 04th, 2012

 
SYSTEMS>> ADHESIVES>> HOT MELT
Henkel Presents PUR Hotmelts for Endpapering at Drupa 2012

Henkel will be showcasing its complete portfolio of products and technologies for the printing and packaging industries at Drupa 2012 from May 3 to 16 in Düsseldorf. The global leader in adhesives, sealants and surface treatments will be presenting innovations ranging from an automatic monitoring system for spine gluing in bookbinding machines and...

Company name: Henkel
Published On: Thursday May 03rd, 2012

 
SYSTEMS>> COATINGS
Dow To Showcase Innovations at American Coatings Show 2012

Four businesses within The Dow Chemical Company will showcase innovations in coatings and other materials at the American Coatings Show (ACS) in Indianapolis May 8-10, 2012. Delivering on their collective "Rethink Coatings" strategy, experts from Dow Coating Materials, Dow Performance Additives, Dow Epoxy, and Dow Construction Chemicals will meet...

Company name: Dow Coatings Materials
Published On: Friday May 04th, 2012

 
Bayer to Discuss Advanced PU Chemistry in Coatings for Various Applications at ACS 2012

Otto Bayer discovered polyurethane chemistry 75 years ago. Since that time, this versatile chemistry has evolved, ushering in a number of coatings technologies, including one- and two-component solventborne and waterborne chemistries, radiation-curing polyurethane coatings and polyurethane powder coatings formulations.Visitors to the American...

Company name: Bayer MaterialScience AG
Published On: Friday May 04th, 2012

 
SYSTEMS>> COATINGS>> SPRAYS
VersaFlex Supplies Polyurea Coating for Rehab of Power Station Water Cooling System

Minneapolis-based Xcel Energy's Harrington Station location had been experiencing through-wall corrosion of the carbon steel piping used in their circulation water system. This effluent cooling water is typically run at 50 psi (380kPa) and 55-110° F (13-44° C). Because the replacement of existing pipe can be extremely costly and result in long...

Company name: VersaFlex
Published On: Wednesday May 02nd, 2012

 
PDA Europe 6th ANNUAL CONFERENCE «Polyurea Around the Globe»: 12 - 14 November 2012

The conference has been designed to discuss and present all facets of polyurea technology. Not only will it have some of the most influential and knowledgeable presenters on polyurea technology, its application and uses ... but also a full day of hands-on educational classes. If you are involved in polyurea or want to learn more about it, this is...

Company name: PDA Europe
Published On: Thursday May 03rd, 2012

 
Diamond Liners to host course September 11-14, 2012 in Santa Fe Springs, CA

This course identifies the many elements involved in the successful set up and operation of polyurea spray equipment and developed as a hands-on course covering all phases of hot spray polyurea application. It also gives attendees an in-depth analysis of commercially available equipment designs and necessary hardware components to ensure successful...

Company name: Diamond Liners
Published On: Thursday May 03rd, 2012

 
1950s Pennsylvania Home Gets New Life with LEED, Energy Star and American Building Products Like...

The small stone colonial home on Landover Road in Bryn Mawr, PA was built in the 1950s, but thanks to a local builder, it’s now a model for future home design, construction, healthy living, and using American made building products.“It’s a brand new 60-year-old home,” says Brian Walters, owner of the home and president of Brian Walters’ Factotum,...

Company name: NCFI Polyurethanes
Published On: Friday May 04th, 2012

 
SYSTEMS>> COATINGS>> PHOTOSENSITIVE COATINGS
One-component, UV-curable waterborne polyurethane coatings make a splash

As the coatings industry continues to seek ways to lessen its impact on the environment, ultraviolet- (UV) curable polyurethane dispersions (PUDs) have emerged as a viable solution. This coatings technology offers lower volatile organic compounds (VOCs) and volatile hazardous air pollutants (VHAPS) than solventborne coatings, while still providing...

Company name: Bayer MaterialScience LLC
Published On: Wednesday May 02nd, 2012

 
UV-cure coatings technology from A - Z

Ultraviolet-cure (UV-cure) coating technology continues to gain traction in the coatings industry due to its many competitive advantages — low energy costs, no pot life issues, reduced environmental impact and a fast cure time, among others. Formulators are looking to capitalize on this technology and optimize its performance. To give formulators a...

Company name: Bayer MaterialScience AG
Published On: Monday May 07th, 2012

 
SYSTEMS>> SEALANTS>> SEALANT (ONE-COMPONENT)
Sika Corporation Announces Introduction of New i-Cure® Product; Sikaflex®-290i DC

Sika Corporation proudly announces the continued integration of its advanced Sikaflex®-290i DC i-Cure® Technology into our U.S. marine product line. The term i-Cure® stands for “intelligent curing” and is the chemical base for advanced cross linking technology for polyurethane sealants and adhesives.This patented and proprietary technology base...

Company name: Sika Corporation
Published On: Wednesday May 02nd, 2012

 
SYSTEMS>> ELASTOMERS>> CAST
Alchemie announces the launch of new series of Polyurethane rubbers

Alchemie are pleased to announce the launch of our new 3500 series of Polyurethane rubbers. The 3500 series represents a new direction for the company in polymer production. The first product available will be PU 3523 which is a 50 shore A material.The product series is targetted at moulding applications requiring very high tear resistance,...

Company name: Alchemie
Published On: Friday May 04th, 2012

 
CASE>> ELASTOMERS>> POTTING COMPOUNDS
Electrolube launches isocyanate-free clear polyester resin at smt hybrid packaging

Electrolube, the global manufacturer at the forefront of electro-chemicals technology, will launch an innovative clear polyester resin and showcase the company's newest "green" and Silicone Resin products for the electronics, automotive and industrial manufacturing industries, at SMT Hybrid Packaging on the 8-10 May at the Messezentrum in...

Company name: Electrolube
Published On: Sunday May 06th, 2012

 
FINISHED PRODUCTS>> AUTOMOTIVE
Faurecia to acquire Ford/ACH automotive interiors business in Saline, Michigan

Faurecia will acquire the Saline business, which generates $1.1 billion annual sales [€835 million] supplying cockpit modules, instrument panels, door panels and center consoles for 12 vehicle programs assembled at eight Ford plants throughout North America. With this acquisition, Faurecia’s objective is to create a new operation that is optimized...

Company name: Faurecia
Published On: Friday May 04th, 2012

 
Lucintel Estimates Global Automotive Seat Industry to Exceed US $66 Billion in 2017 Driven by Growth...

The global automotive seat industry is expected to reach an estimated US $66.5 billion in 2017 with a CAGR of 4% over the next five years. Growth in Asia Pacific nations is anticipated to drive the industry during the forecast period.Lucintel, a leading global management consulting and market research firm, has analyzed the global automotive seat...

Company name: Lucintel
Published On: Monday May 07th, 2012

 
FINISHED PRODUCTS>> BEDDING
ISPA commends Connecticut for mattress recycling compromise

BedTimes Magazine reports today that the International Sleep Products Association is commending the Connecticut Senate for reaching a compromise on legislation creating a used mattress recycling program and passing on May 2 S.B. No. 89, a solution that takes into account fundamental practical issues involved with designing and implementing an...

Company name: International Sleep Products Association
Published On: Sunday May 06th, 2012

 
FINISHED PRODUCTS>> COLD STORAGE & REFRIGERATION
Polyurethane innovator to showcase new construction product lines at IARW-WSLO

General Plastics Manufacturing Company will be participating in the 2012 IARW-WSLO Convention & Expo for refrigerated warehousing and logistics professionals in Tucson, Arizona. It will be exhibiting jointly April 23-26 with its cold-storage distribution partner CSI at booths 515 and 513. The companies will spotlight General Plastics’ premier...

Company name: General Plastics
Published On: Tuesday May 01st, 2012

 
FINISHED PRODUCTS>> MEDICAL>> FOAM TAPE
Medical Foam Tape combines conformability, breathability

Avery Dennison Medical Solutions has developed a new highly breathable and conformable medical foam tape that provides comfortable, breathable securement and can serve as a backing material in multiple constructions including multi-layer wound dressings and fixation devices."Our new tape, named MED 5663U, excels in two key performance...

Company name: Avery Dennison
Published On: Friday May 04th, 2012

 
FINISHED PRODUCTS>> INDUSTRIAL
Conveyor Concepts, a New Addition to Caster Concepts Lineup

Caster Concepts, Inc., manufacturer of heavy duty industrial casters and wheels, is pleased announce today the addition of Conveyor Concepts to its family of businesses. Conveyor Concepts manufactures specialized components for the conveyor industry, including: conveyor rollers, drive assemblies, polyurethane wheels and many other related...

Company name: Caster Concepts
Published On: Thursday May 03rd, 2012

 
FINISHED PRODUCTS>> INDUSTRIAL>> BELT
Advanced Meat Recovery Belt

BRECOflex CO., LLC. is proud to announce a new product development in the field of advanced meat recovery. This new FDA approved belt was specifically designed for applications where rest meat is recovered by utilizing perforated drums. The result is an extremely wear resistant belt with higher reliability and unsurpassed life expectancy. Some...

Company name: BRECOflex
Published On: Wednesday May 02nd, 2012

 
INDUSTRY UPDATE
Huntsman reports record earnings in Q1

Huntsman Corporation reported first quarter 2012 results with revenues of $2,913 million and adjusted EBITDA of $397 million. Peter R. Huntsman, our President and CEO, commented:“Our first quarter 2012 earnings represented a record performance. Improvements in our MDI selling prices and attractive margins in our PO/MTBE business were notable.There...

Company name: Huntsman International LLC
Published On: Wednesday May 02nd, 2012

 
Trelleborg inaugurates a new facility for advanced sealing solutions in Bangalore, India

Today, Trelleborg inaugurates a newly constructed facility in Bangalore, India, to develop, manufacture and supply high-performance sealing solutions for aircrafts, off-highway equipment, trucks and passenger cars, as well as for industrial applications. The facility is part of the Trelleborg Sealing Solutions business area, and it will initially...

Company name: Trelleborg Sealing Solutions
Published On: Tuesday May 01st, 2012

 
 
LATEST TRENDS >> PATENTS
PU RAW MATERIALS>> ISOCYANATES
Method for producing isocyanates

The invention relates to a process for preparing isocyanates in the gas phase.

Company name: BASF Aktiengesellschaft
Published On: Thursday May 03rd, 2012

 
Process for the preparation of isocyanates in the gas phase

Isocyanates are produced by reacting a primary amine with phosgene in the gas phase. In this process, the amine is vaporized and then superheated prior to introduction into the reactor. The amine is superheated to a temperature at least 10.degree. C. above dew point before entry into the reactor. A pressure difference between the vaporizer and...

Company name: Bayer MaterialScience AG
Published On: Friday May 04th, 2012

 
Process for the preparation of light-colored isocyanates of a diphenylmethanediisocyanate series

The present invention accordingly provides a process for preparing light-coloured polyphenylene-polymethylene polyisocyanates comprising the steps (a) providing an amount of chlorine, (b) separating the chlorine provided in the step (a) to obtain a first chlorine fraction having a content of free and bound bromine and iodine of

Company name: BASF SE
Published On: Thursday May 03rd, 2012

 
PU RAW MATERIALS>> RESIN COMPOSITION>> PHOTOCURABLE
Solvent-free photocurable resin composition for protective film

A solvent-free photocurable resin composition is provided which can be applied to the surface of optical discs or the like to form a highly transparent protective film that can stably adhere to the surface and effectively protect the surface from scratches. The solvent-free photocurable resin composition contains a urethane(meth)acrylate oligomer,...

Company name: Sony Chemical & Information Device Corporation
Published On: Thursday May 03rd, 2012

 
PU RAW MATERIALS>> RESIN COMPOSITION>> THERMOSETS
Thermosetting resin composition

The object of the present invention is to provide a thermosetting resin composition which can provide a cured material which is excellent in heat resistance, electrical properties, and flexibility, and has storage stability before curing, and in order to achieve the object, the present invention provide a thermosetting resin composition containing...

Company name: DIC Corporation
Published On: Thursday May 03rd, 2012

 
SYSTEMS>> ADHESIVES
Polyurea adhesive

A polyurea adhesive composition that is obtainable by reaction of reaction components that include a polyisocyanate comprising isocyanurate rings, the polyisocyanate having a functionality equal to or greater than 3, a polyamine having an average molecular weight greater than about 500 dalton and a carboxylic acid. Additionally, the reaction...

Company name: Michelin
Published On: Friday May 04th, 2012

 
SYSTEMS>> ADHESIVES>> BINDERS
Anisotropic electrically and thermally conductive adhesive with magnetic nano-particles

A composition of matter comprising a plurality of nanoparticles in a non-conductive binder, wherein, the type of nanoparticles form isolated parallel electrically and thermally conductive columns when cured in the presence of the magnetic field. Also wherein the plurality of nanoparticles are Paramagnetic or Ferromagnetic magnetic. Wherein the nano...

Company name:
Published On: Thursday May 03rd, 2012

 
SYSTEMS>> ADHESIVES>> ONE-COMPONENT
Silane cross-linked 1-component lamination adhesive

The invention relates to a crosslinkable one-component lamination adhesive containing a) 25 to 80 wt % of polyester prepolymers, polyether prepolymers, and/or polyurethane prepolymers that comprise at least two crosslinkable silane groups, b) 75 to 20 wt % organic solvent having a boiling point of up to 130.degree. C., c) 0 to 15 wt % additives,...

Company name: Henkel
Published On: Thursday May 03rd, 2012

 
SYSTEMS>> COATINGS
Coil-coated spectrally selective coatings on copper or aluminum with pigments modified by...

The invention relates to TSSS and TISS coatings applied by coil-coating onto substrates of copper or aluminum. Inorganic pigments functionalized by aminosilane are used for making paints, which after the coil-coating onto the substrate form the coatings. For the functionalization the pigment is dispersed in a solution of an aminosilane in a solvent...

Company name:
Published On: Thursday May 03rd, 2012

 
Low-gloss, two-component clear coats, articles of manufacture having low-gloss, two-compnent clear...

Low-gloss, two-component clear coats include a base resin including a urethane resin, an isocyanate resin that combines with the base resin immediately prior to application of the low-gloss, two-component clear coat to form a two-component base resin mixture, wherein the two-component base resin mixture comprises from about 20 weight percent to...

Company name: Toyota Motor Engineering & Manufacturing North America
Published On: Thursday May 03rd, 2012

 
Radiation curing of coatings

The invention relates to a process of coating a substrate with a non-aqueous coating composition comprising a) a polyol, b) a polyisocyanate crosslinker, c) a metal based catalyst for the addition reaction of hydroxyl groups and isocyanate groups, d) a thiol-functional compound at least partly deactivating the metal based catalyst, and e) a...

Company name: Akzo Nobel Coatings
Published On: Thursday May 03rd, 2012

 
SYSTEMS>> COATINGS>> INKS
Aqueous ink jet ink comprising a crosslinking pigment dispersion based on diblock polymeric...

The present disclosure provides an aqueous ink jet ink comprising an ink vehicle and an aqueous dispersion, wherein the aqueous dispersion comprises a solid particle and a polymeric dispersant that has been crosslinked, wherein the polymeric dispersant is a block copolymer comprising an A block and a B block, wherein the A block is a segment having...

Company name: E I du Pont de Nemours & Company
Published On: Thursday May 03rd, 2012

 
SYSTEMS>> COATINGS>> DISPERSIONS
Ambient-temperature self-curable and fluorine containing aqueous-based polyurethane (PU) dispersion...

An ambient-temperature self-curable fluorine containing aqueous-based polyurethane dispersion, a method of manufacturing the same and its modified coated film applications are provided. The ambient-temperature self-curable fluorine containing aqueous-based PU dispersion includes water, an ambient temperature cross-linking agent and a fluorine...

Company name:
Published On: Thursday May 03rd, 2012

 
SYSTEMS>> COATINGS>> ELECTRODEPOSITABLE COATINGS
Electrodepositable coating compositions and related methods

Provided is an electrodepositable coating composition of a resinous phase dispersed in an aqueous medium, the resinous phase including (a) an active hydrogen-containing, cationic salt group-containing resin; and (b) an at least partially blocked polyisocyanate curing agent. The composition contains an organotin catalyst which is or is derived from...

Company name: PPG Industries Ohio, Inc.
Published On: Wednesday May 02nd, 2012

 
SYSTEMS>> COATINGS>> FLOORING
Polyurethane floor finishes with hybrid performance

VOC-compliant aqueous polyurethane floor coating compositions and components are provided. Embodiments include at least one organic solvent having a vapor pressure of less than 0.1 mm Hg under ambient conditions and a viscosity of less than 60 cps for at least three hours after being formed. The coating compositions exhibit application...

Company name: Ecolab
Published On: Thursday May 03rd, 2012

 
SYSTEMS>> COATINGS>> PAINTS
Water-based coating composition and method for forming multilayer coating film

This invention relates to an aqueous coating composition comprising an acrylic or polyester resin (A); a curing agent (B); and a blocked isocyanate group-containing urethane resin emulsion (C) having a weight average molecular weight of 2,000 to 50,000, which is prepared using a polyisocyanate component and a polyol component as starting materials,...

Company name: Kansai Paint
Published On: Thursday May 03rd, 2012

 
SYSTEMS>> BIOMATERIALS>> FILMS
Biodegradable and biocompatible waterborne polyurethane

The present invention relates to a waterborne polyurethane containing biodegradable segments and the process for synthesizing the same. The waterborne polyurethane according to the present invention has excellent biodegradable, biocompatible and mechanical characteristics and thus is a useful biomedical material, in particular for making films for...

Company name: National Chung Hsing University
Published On: Thursday May 03rd, 2012

 
FOAMS
Formulations for cellular, foamed-polymer products based on polyvinyl chloride, improved cellular,...

Formulation for cellular, foamed-polymer product based on polyvinyl chloride, comprising: a polyvinyl chloride homopolymer having a K-value of from 60 to 85 and a pH value of the aqueous extract ranging of from 8 to 12; at least one isocyanate selected from isomers and homologues of diphenylmethane-4,4'-diisocyanate and modified...

Company name: Diab International
Published On: Wednesday May 02nd, 2012

 
FOAMS>> FLEXIBLE
Method for producing flame-retardant polyurethane foam materials having good long-term use...

The subject-matter of the present invention relates to a process for the production of flame-retardant polyurethane foams, preferably for the production of flame-retardant flexible polyurethane foams, from A1 a filler-containing polyether polyol (component A1.1), wherein the filler is a reaction product of a di- or poly-isocyanate with a compound...

Company name: Bayer MaterialScience AG
Published On: Thursday May 03rd, 2012

 
CASE>> COATINGS>> LINERS
Polymeric coating and lining system

An automotive vehicle having at least one vehicular exterior surface formed from at least a portion of an exterior pickup box. The vehicular exterior surface includes a structural substrate having an outwardly oriented surface and at least one polymeric layer in overlying relationship to at least a portion of the outwardly oriented surface of the...

Company name: DCT Holdings
Published On: Thursday May 03rd, 2012

 
CASE>> ELASTOMERS>> TPU
Cross-linkable thermoplastic polyurethanes

The invention provides a cross-linkable elestomeric thermoplastic polyurethane that is urea free, isocyanutrate free, oxazolinyl free, functional radically-polymerizable pendant group free and having terminal functional radically-polymerizable groups at both ends, and thermoset polyurethanes obtained therefrom. The invention also provides...

Company name: Huntsman International LLC
Published On: Wednesday May 02nd, 2012

 
FINISHED PRODUCTS>> SPORTS
Athletic sock

An athletic sock formed from a yarn comprising Coolmax.RTM. polyester fibers, cotton fibers and Lycra.RTM. polyurethane-polyurea copolymer fiber. The sock has a toe portion, at least one compression portion, a heel and ankle portion, and an upper band at the top portion of the sock.

Company name:
Published On: Thursday May 03rd, 2012

 
FINISHED PRODUCTS>> MEDICAL>> CATHETER
Urinary catheter

A medical device is disclosed, comprising a substrate, having on its surface, on at least a part thereof, a hydrophilic surface layer providing low-friction surface character of the medical device when wetted by a wetting fluid. The substrate is made of a polymer blend comprising a polyolefin and a composition having molecules with active...

Company name: Astra Tech
Published On: Thursday May 03rd, 2012

 
FINISHED PRODUCTS>> ACOUSTIC
Apparatus for reducing background and wind noise to a microphone

An apparatus for reducing background and wind noise to a microphone contained in a microphone casing comprises a clamshell enclosure. The clamshell enclosure has a top piece and a bottom piece held together by a hinge or a plastic membrane, wherein the clamshell enclosure is designed to encapsulate the microphone casing containing the microphone....

Company name:
Published On: Wednesday May 02nd, 2012

 
FINISHED PRODUCTS>> INDUSTRIAL
Air hose support clip to prevent lateral loading

Apparatus for suspending a device such as the end of a depending air brake hose from a railcar. A flexible strap of a synthetic resin such as moldable polyurethane is suspended from the railcar body, for example, by attachment to an apertured fitting on the railcar coupler. Elongated resilient wire clips are provided to attach the free end of the...

Company name:
Published On: Wednesday May 02nd, 2012

 
FINISHED PRODUCTS>> INDUSTRIAL>> PNEUMATIC PRESS
Pneumatic high velocity press

A pneumatic press with high slide acceleration and velocity is equipped with an arrangement trigger mechanism for holding the slide, upper die, and punch in place until air pressure force in tons is exerted against slide opposite the upper die and punch. When the trigger mechanism releases the slide, upper die, and punch in a short travel the...

Company name: Airam Press
Published On: Friday May 04th, 2012

 
FINISHED PRODUCTS>> INDUSTRIAL>> PADS
Polishing pad

A polishing pad of excellent durability has a polishing layer is arranged on a base material layer, and the polishing layer comprises a thermosetting polyurethane foam having roughly spherical interconnected cells with an average cell diameter of 35 to 300 .mu.m.

Company name: Toyo Tire & Rubber Co., Ltd
Published On: Thursday May 03rd, 2012

 
Method for manufacturing polishing pad

A method for manufacturing a polishing pad, which may be laminated, with a small number of manufacturing steps, high productivity and no peeling between a polishing layer and a cushion layer includes preparing a cell-dispersed urethane composition by a mechanical foaming method; continuously discharging the cell-dispersed urethane composition onto...

Company name: Toyo Tire & Rubber Co., Ltd
Published On: Thursday May 03rd, 2012

 
CHEMISTRY
Method of measuring entry of water into phosgene-conducting plants

The invention relates to a method of measuring entry of water and resulting corrosion in plants for producing isocyanates by reacting phosgene with one or more primary amines in a solvent. The invention further relates to an apparatus for producing such isocyanates, in the work-up section of which probes for monitoring corrosion are arranged in...

Company name: BASF SE
Published On: Thursday May 03rd, 2012

 
 
LATEST TRENDS >> PAPERS
SYSTEMS>> ADHESIVES
Labels & Labeling: Green Adhesives

For years, the industry has promoted water-based adhesive (acrylic, urethane, etc.) alternatives to solvent-based adhesives as the answer to environmental concerns related to volatile organic components (VOCs). Now the realization that “it’s the percent solids stupid” is taking hold. Although the adhesives and sealants industry is not as far along...

Company name: Timm Consulting
Published On: Monday May 07th, 2012

 
Precise tip shape transformation of nanopillars for enhanced dry adhesion strength

We present a simple, yet robust, technique for controlling the tip geometry of nanopillars by utilizing a two-step process of partial photopolymerization of UV-curable polyurethane acrylate (PUA) resin and subsequent tip shape modification. With this technique, head structures of nanopillars were precisely transformed from hemispherical to...

Company name: University of California Berkeley
Published On: Monday May 07th, 2012

 
CASE>> ELASTOMERS>> TPU
Nanostructured hyperbranched polyurethane elastomer hybrids that incorporate polyhedral...

Novel thermoplastic hyperbranched polyurethane (HBP) elastomer hybrids containing polyhedral oligomeric silsesquioxane (POSS) have been synthesized using an A2 + B3 approach. Different compositions of these hybrid nanomaterials were obtained from reactions of POSS-diol, triethanolamine, poly(ε-caprolactone)diol, and...

Company name: Konkuk University
Published On: Monday May 07th, 2012

 
CASE>> COMPOSITES>> NANOMATERIALS
Photocrosslinkable acid urethane dimethacrylates from renewable natural oil and their use in the...

Castor oil-based acid urethane macromers were prepared and employed for obtaining Ag/Au/polymer nanocomposites. Structure and UV induced photopolymerization of the macromers were investigated by spectral methods. The polymerization rate and the degree of conversion decreased with about 10% in the presence of 2.5 wt.% silver nanoparticles (Ag NPs)....

Company name: Petru Poni Institute of Macromolecular Chemistry
Published On: Monday May 07th, 2012

 
Preparation and characterization of silk fibroin nanocrystals

Crystalline silk fibroin nanoparticles (CSFs), a kind of natural protein nanocrystal, were prepared by treatment of silk fibroin (SF) powders with 64 wt% aqueous sulfuric acid. Various treatment periods were tested, and optimal conditions corresponded to 2 h at 45 °C. Transmission electron microscopy observation showed that the CSFs existed as...

Company name: Wuhan Textile University
Published On: Monday May 07th, 2012

 
Synthesis of shape memory polyurethane/clay nanocomposites and analysis of shape memory, thermal,...

In this study, shape memory polyurethane/clay nanocomposites were synthesized by using two-step in situ polymerization. The effects of nanoparticle content on mechanical, thermal, and shape memory properties were studied. Soft and hard segments of polyurethanes were based on polycaprolactone (PCL) diol and 4,4′-diphenylmethane...

Company name: Amirkabir University of Technology
Published On: Monday May 07th, 2012

 
CHEMISTRY
Degradable poly(ester-ether urethane)s derived of AB2 miktoarm star copolymer poly(ethylene...

Four different miktoarm star copolymers poly(ethylene glycol-(ε-caprolactone)2) diol [PEG-PCL2] were obtained using α-diol-ω-methoxy poly(ethylene glycol) [MPEG-(OH)2] as macroinitiator/chain transfer agent in the ring opening polymerization (ROP) of ε-caprolactone (CL) catalyzed by tin(II) 2-ethylhexanoate [Sn(Oct)2]. PEG-PCL2...

Company name: Instituto de Ciencia y Tecnología de Polímeros
Published On: Monday May 07th, 2012

 
Cyclic limonene dicarbonate as a new monomer for non-isocyanate oligo- and polyurethanes (NIPU)...

Herein we report a very versatile new route to linear as well as cross-linked terpene-based non-isocyanate poly(hydroxyurethanes) (NIPUs) and prepolymers derived from the novel cyclic limonene dicarbonate (CL). The catalytic carbonation of epoxidized limonene with CO2 was monitored in the presence of both homogeneous tetrabutylammonium bromide...

Company name:
Published On: Monday May 07th, 2012

 
First‐Principles Design of Highly Active and Selective Catalysts for Phosgene‐Free...

Catalyst design: First principles calculations predict that phosgene can be substituted by dimethyl carbonate (DMC) in the carbamoylation of aromatic amines when using a CeO2 catalyst preferentially exposing the low energy {111} facet. Experimental results confirm the theoretical predictions, and CeO2 nano‐octahedra terminated by low energy...

Company name: Universidad Politécnica de Valencia
Published On: Monday May 07th, 2012

 
 

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