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  Issue-374 - August 26, 2013   Recommend
Press Releases Patents Technical Papers
LATEST TRENDS >> PRESS RELEASES
PU RAW MATERIALS>> ADDITIVES>> FLAME RETARDANT
Flame-retardant chemicals deadline delayed

A state law that would eliminate flame-retardant chemicals from new furniture by next summer is being delayed six months to allow manufacturers more time to get ready. The state Department of Consumer Affairs, the agency proposing the law, had announced in February that manufacturers would have to comply by July 1, 2014. The agency plans to undo a...

Company name:
Published On: Thursday August 22nd, 2013

 
PU RAW MATERIALS>> POLYOLS
Monument Polyol Hike

Effective with shipments on September 15, 2013, Monument Chemical will increase its off-list prices of all Poly-G, Poly-Q, Poly-A, Poly-L, Poly-T, and Poly-CD polyols by $0.06 per pound.

Company name: Monument Chemical
Published On: Friday August 23rd, 2013

 
PU RAW MATERIALS>> POLYOLS>> POLYETHER
Dow Announces Polyol Hike

Effective September 15, 2013, or as soon thereafter as the applicable contract allows, The Dow Chemical Company will increase its price for all grades of VORANOL™, VORALUX™, and SPECFLEX™Polyols by USD $0.06/pound for all market segments in the United States.

Company name: The Dow Chemical Company
Published On: Friday August 23rd, 2013

 
PU RAW MATERIALS>> RESIN COMPOSITION>> POTTING / ENCAPSULATION RESINS
Fast UV cure encapsulants with secondary moisture cure

Dymax 9101, 9102 & 9103 Dual-Cure electronics encapsulants are resilient, chip encapsulating materials designed with a primary UV/visible light cure, and secondary ambient moisture cure system for shadowed areas. These glob topping materials cure in seconds to produce tough flexible encapsulants for your die, wire bonds or integrated circuit...

Company name: Intertronics
Published On: Wednesday August 21st, 2013

 
PU RAW MATERIALS>> RESIN COMPOSITION>> BINDERS
Solving stormwater management with porous pavement

Urban settings call for paved surfaces. Whether it’s sidewalks, roads, parking lots, driveways or bike paths, cities are all but covered in concrete and asphalt. These surfaces are naturally beneficial for drivers and pedestrians, but they present problems for water management. For example, pavement prevents stormwater from filtering back into...

Company name: BASF Polyurethanes
Published On: Tuesday August 20th, 2013

 
FOAMS>> FLEXIBLE
Rapra Publishing releases: Practical Guide to Flexible Polyurethane Foams

Polyurethanes are one of the most versatile and exciting materials in the plastics family. Although there are many types, the flexible and viscoelastic foams have opened up vast possibilities as viable business ventures and expanding applications: they have established themselves as an essential part of everyday life, replacing traditional...

Company name: Smithers Rapra
Published On: Tuesday August 20th, 2013

 
CASE>> COATINGS>> SPRAY FOAMS
SPF Insulation Expected to Surpass $1 Billion in 2015

The spray polyurethane foam (SPF) industry is projected to grow at 13% per year from about $800 million in 2013 to $1.1 billion in 2015. Growth will surpass overall construction industry expansion based on increased penetration of SPF in key residential and commercial applications. However, the industry does face some challenges, including concerns...

Company name: Principia Partners
Published On: Friday August 23rd, 2013

 
CASE>> COATINGS>> PAINTS
New standard evaluates inherent dry fall characteristics of paints

Coatings such as paint show inherent dry fall characteristics. A new ASTM International standard was developed to substantiate manufacturers’ claims.ASTM D7868, Practice for Determining the Dry Fall (Fog) Properties of Protective Coatings, was developed by Subcommittee D01.46 on Industrial Protective Coatings, part of ASTM International Committee...

Company name: ASTM International
Published On: Monday August 19th, 2013

 
CASE>> ADHESIVES
Automotive adhesives market revenues in Germany expected to grow

Increasing environmental concerns coupled with growing sales of electric vehicles to contribute to the increased usage of composite materials, thereby adding to the growth of automotive adhesives in Germany.Germany is the home to Europe’s largest auto market, with highest concentration of OEM plants. During 2011, 47 OEM plants in Germany were...

Company name: TechSci Research
Published On: Friday August 23rd, 2013

 
CASE>> SEALANTS
Dow Introduces New Ultra Air Barrier Wall System Solutions

Continuing its dedication to working closely with industry professionals to deliver the right solutions for the right applications, Dow Building Solutions (DBS), a business unit of The Dow Chemical Company, today introduced a new Ultra Air Barrier Wall System. Building on field input and demand, DBS developed a second Ultra Air Barrier Wall System...

Company name: Dow Building Solutions
Published On: Tuesday August 20th, 2013

 
CASE>> COMPOSITES
Composites 2013: Innovative lightweight construction solutions for the aviation industry / Musical...

RAMPF Tooling, a leading manufacturer of liquid, paste, Close Contour, and board materials for mold and model engineering, will be showcasing its products and solutions for lightweight construction at the Composites 2013 from September 17 to 19 in Stuttgart. The company’s trade show presentation will focus on the aviation industry. Visitors to the...

Company name: RAMPF-Gruppe
Published On: Wednesday August 21st, 2013

 
Carbon Fiber Integration to be Discussed by Dow Automotive Systems at Global automotive...

Two presentations from Dow Automotive Systems will focus on the integration and supply of carbon fiber composites. Developments, strategies, benefits and application solutions will be discussed. Interview opportunities available.Where: Global Automotive Lightweighting Materials Conference at Cobo Center, 1 Washington Blvd., Detroit, MichiganWhy:...

Company name: Dow Automotive
Published On: Wednesday August 21st, 2013

 
PROCESSING EQUIPMENTS - PRODUCTION>> ELASTOMER>> CAST
New samples of large-scale details from polyurethane Eracast RT 70A - Protective casing for...

At the end of last week, for our Ukrainian clients, the team of OSV technologists produced samples of large-scale polyurethane protective casing for underwater radar.All works on production of this detail have been done using the two-component polyurethane elastomer Eracast RT 70A by Australian company Era Polymers and with the help of OSV mixing...

Company name: OSV Technologiya
Published On: Friday August 23rd, 2013

 
FINISHED PRODUCTS>> CONSTRUCTING>> THERMAL INSULATION
Aiming for R-value with Icynene key in tight areas

One of the biggest considerations builders and homeowners alike need to make is the amount of space they have available for updating structures. These restrictions exist in a number of spaces, such as attics, basements and in various parts of older construction houses that have less surface depth between interior walls. Maintaining the overall...

Company name: Icynene
Published On: Tuesday August 20th, 2013

 
Spray Foam Direct Launches Best Renovation Story Contest To Promote Inclusion In Energy Efficiency...

Spray Foam Direct, the manufacturers and distributors of Foam it Green spray foam insulation, has launched a Facebook contest entitled Best Renovation Story to celebrate its participation in Jeff Wilson's new book, The Greened House Effect, and raise awareness of energy-efficient home renovation tactics. The contest can be found on Spray Foam...

Company name: Spray Foam Direct
Published On: Tuesday August 20th, 2013

 
FINISHED PRODUCTS>> AUTOMOTIVE
The cockpit as comfort zone

When it comes to the interior of their automobiles, more and more people dream of a customized comfort zone. It should offer a level of comfort similar to that of their living room at home while including all the latest technology and a high degree of functionality. At the K 2013 plastics trade fair in Düsseldorf, Germany, Bayer MaterialScience is...

Company name: Bayer MaterialScience AG
Published On: Tuesday August 20th, 2013

 
FINISHED PRODUCTS>> ELECTRICAL AND ELECTRONIC
Banner Engineering Introduces PU Encapsulated LED Area Lights

Banner Engineering announces its WLA Series Encapsulated Area Lights. Designed for use in industrial environments, these powerful, solid-state LED lights are completely encapsulated in optically clear polyurethane—enhancing chemical compatibility and increasing their resistance to shock and vibrations.The Encapsulated WLA light is a rugged, high...

Company name: Banner Engineering
Published On: Thursday August 22nd, 2013

 
FINISHED PRODUCTS>> MINING
Prothane to exhibit new product at mining exhibition

Polyurethane moulded products designer and manufacturer Prothane Industrial will exhibit at mining trade show Electra Mining Botswana, which runs from September 3 to 5 at the Gabarone Fairgrounds, in Botswana.The company will not only exhibit its range of aftermarket slurry pump impellers but also launch its new Polycombo MKII impeller."Polycombo...

Company name: Prothane Industrial
Published On: Friday August 23rd, 2013

 
FINISHED PRODUCTS>> INDUSTRIAL>> CASTER & WHEELS
Three key factors determine the perfect caster and wheel design

A properly manufactured, long-lived industrial caster that requires little upkeep depends largely upon three key design choices.This post covers those three key design choices and how these choices impact the caster function based on the intended use. When choosing your caster, a little pre-purchase forethought will yield the correct design...

Company name: Caster Concepts
Published On: Thursday August 22nd, 2013

 
FINISHED PRODUCTS>> FOOTWEAR
Oliver releases new elastic sided workboots

Oliver Footwear introduces a new range of elastic sided workboots to their highly successful All Terrain 55 Series. Oliver AT 55-222, the new boot incorporates all the traditional Oliver features of superior comfort, durability and safety protection for the workplace.The AT 55-222 is an elastic sided boot featuring a wheat-coloured, water-resistant...

Company name: Oliver Footwear
Published On: Monday August 19th, 2013

 
INDUSTRY UPDATE
Lapolla Signs Middle East Exclusive

Lapolla Industries, Inc., a Houston based global supplier, and manufacturer of spray polyurethane foam insulation and elastomeric protective coatings, and equipment designed to reduce energy consumption in the residential, industrial and commercial markets, for both new construction and retrofit applications, executes a new exclusive contract with...

Company name: LaPolla Industries
Published On: Friday August 23rd, 2013

 
Sorbothane, Inc. Continues Growth - Adds Production Equipment And Team Members

Sorbothane, Inc. announced today the addition of a second custom engineered production-pouring machine."The recent addition of new computer controlled equipment, partnered with a qualified production team member, allows us to efficiently deliver a superior product to our customers," stated David Church, President of Sorbothane, Inc.This is the...

Company name: Sorbothane
Published On: Friday August 23rd, 2013

 
OSV Technologiya starts partnership with the German company Siemens

In July 2013 the company OSV Technologiya signed partnership agreement with the famous German company Siemens.Now OSV mixing and casting machinery will be equipped with high-quality devices for measuring and automation of Siemens trade mark.

Company name: OSV Technologiya
Published On: Wednesday August 21st, 2013

 
NCFI Engineer Exemplifies Ongoing Industry Leadership wiith Continued Building Science Testing

NCFI Polyurethanes has been in business since 1964, and while the rest of the US building industry looks to the company and its Spray Polyurethane Foam (SPF) insulation products for experience gleaned from all those years, the company itself looks to the future."We have never been content to ride the wave," says Steve Riddle, President of NCFI,...

Company name: NCFI Polyurethanes
Published On: Wednesday August 21st, 2013

 
Honeywell to invest USD 200 million in Louisiana

Honeywell International Inc. has announced plans to invest more than USD 200 million in new manufacturing projects at four sites in Louisiana including the fluorine plants in Baton Rouge and Geismar. The investment will create 42 new direct jobs.“Two years ago, we announced Honeywell’s USD 33 million investment to manufacture new, environmentally...

Company name: Honeywell
Published On: Wednesday August 21st, 2013

 
Lubrizol Announces Opening of Additives Manufacturing Facility in Zhuhai, China

The Lubrizol Corporation announces the opening today of a world-class additives manufacturing facility in Zhuhai, Guangdong, China. The plant is the latest addition to Lubrizol's long-term investment and growing presence in China. It is also the cornerstone of Lubrizol's 10-year phased investment plan, launched in 2010, to upgrade operations and...

Company name: The Lubrizol Corporation
Published On: Tuesday August 20th, 2013

 
 
LATEST TRENDS >> PATENTS
PU RAW MATERIALS>> POLYOLS>> GREEN BASED POLYOLS
Biocompatible and biodegradable polymers from renewable natural polyphenols

This invention describes the use of resveratrol and curcumin, representatives of naturally occurring polyphenols, in their native form, after hydrogenation, and as their respective allyl derivatives, individually, in combination with themselves and other commercial monomers, to make representative varieties of polymers, e.g., polycarbonates (PC),...

Company name:
Published On: Tuesday August 20th, 2013

 
Methods of preparing hydroxy functional animal fats

Simple, economical preparative processes for the provision of pure hydroxyl functional materials derived by converting unsaturated molecules found in animal fats into hydroxyl groups are presented herein. The hydroxylated animal fats can be reacted with isocyanates to form polyurethane articles.

Company name: BioBased Technologies
Published On: Friday August 23rd, 2013

 
PU RAW MATERIALS>> RESIN COMPOSITION
Polyurethane resin addition pigment, process for producing polyurethane resin addition pigment,...

A polyurethane resin-bonded pigment may exhibit excellent image density, dispersibility, storage stability, and resolubility, and may form an ink film that exhibits marker resistance and rubfastness. The polyurethane resin-bonded pigment is produced by bringing (I) a pigment having a surface acidic group into contact with (II) a basic compound...

Company name: Tokai Carbon
Published On: Friday August 23rd, 2013

 
PU RAW MATERIALS>> RESIN COMPOSITION>> EMULSIONS
W/O emulsion, foam, and functional foam

Provided is a W/O emulsion, including a continuous oil phase component and an aqueous phase component immiscible with the continuous oil phase component, in which: the continuous oil phase component includes a hydrophilic polyurethane-based polymer and an ethylenically unsaturated monomer; the hydrophilic polyurethane-based polymer includes a...

Company name: Nitto Denko Corporation
Published On: Friday August 23rd, 2013

 
SYSTEMS>> ADHESIVES
Photochromic composition

A photochromic composition, which can function as an adhesive layer for bonding optical sheets made from a polycarbonate resin, may include a polyurethane-urea resin (A) obtained by reacting a polyol compound (A1), a polyisocyante compound (A2) that has two or more isocyanato groups in the molecule, and an amino-containing compound (A3) that...

Company name: Tokuyama
Published On: Friday August 23rd, 2013

 
SYSTEMS>> ADHESIVES>> BINDERS
Binder compositions comprising lignin derivatives

The present disclosure provides an adhesive composition comprising derivatives of native lignin and an isocyanate-based binder such as methylene diphenyl diisocyanate. The present compositions may further comprise formaldehyde-based resins such as PF, UF, and MF. While not wishing to be bound by theory, it is believed that incorporating derivatives...

Company name:
Published On: Friday August 23rd, 2013

 
SYSTEMS>> ADHESIVES>> ADHESIVES
Asphalt-based reactive hot melt polyurethane adhesive

A novel hot melt adhesive that includes a blend of hot melt polyurethane and petroleum liquid.

Company name: The Garland Company
Published On: Friday August 23rd, 2013

 
SYSTEMS>> COATINGS>> DISPERSIONS
Functionalized polyurethane polyurea dispersions

The present invention relates to aqueous polyurethane urea dispersions having integral functional groups and coating agents produced therefrom, to a method for the production thereof, and to the use thereof for producing coating agents.

Company name: Bayer MaterialScience AG
Published On: Tuesday August 20th, 2013

 
FOAMS>> RIGID
Method for producing a rigid polyurethane foam

A method for producing a rigid polyurethane foam, which comprises reacting a polyol with a polyisocyanate in the presence of an amine catalyst and a blowing agent, wherein as the amine catalyst, at least one amine compound having at least one type of substituent selected from the group consisting of a hydroxyl group, a primary amino group and a...

Company name: Tosoh Corporation
Published On: Tuesday August 20th, 2013

 
Apparatus for producing hard polyurethane foam by froth process

Provided is an apparatus for producing hard polyurethane foam by a froth process having a foaming agent supply means that quantitatively supplies the inert gas as a foaming agent and a foaming means that discharges a hard polyurethane foam obtained by forming a foaming polyol composition, in which the foaming agent supply means has a...

Company name: Toyo Tire & Rubber Co., Ltd
Published On: Friday August 23rd, 2013

 
CASE>> COATINGS
Shear-induced alignment of nanoparticles in coatings

Methods and apparatuses for forming linear nanoparticle arrays, and the nanoparticle formulations formed therewith, are described. The nanoparticle arrays may be incorporated into coating materials, and in one example may be provided at or near the surface of two-component polyurethane coatings for use in automotive refinish clear coats. Coatings...

Company name: Cal Poly Corporation
Published On: Friday August 23rd, 2013

 
CASE>> ADHESIVES
Polyurethane adhesive for windshield applications

An automotive windshield replacement method which includes: a) applying an adhesive to an automotive windshield and/or an automobile body substrate, said adhesive including at least one urethane prepolymer formed from reaction materials including: i) isophorone diisocyanate and/or 4,4'-diphenylmethanediisocyanate; ii) an ethylene oxide-end-capped...

Company name: Sika Technology AG
Published On: Tuesday August 20th, 2013

 
CASE>> ADHESIVES>> LAMINATES
Laminate with a color layer, and method for producing same

The present invention relates to a laminate comprising at least one thermoplastic substrate and at least one colour layer, wherein the thermoplastic substrate comprises polyamide, to which at least one colour layer comprising polyurethane crosslinking has been applied.

Company name:
Published On: Friday August 23rd, 2013

 
CASE>> SEALANTS
Polyurethane based insulated glass sealant

Embodiments of the invention include insulated units and methods of producing the insulating units. The insulating units include a first surface, a structural seal disposed on at least portions of the first surface, and a second surface disposed on the structural seal. The structural seal includes the reaction product of at least one first...

Company name: Dow Global Technologies
Published On: Friday August 23rd, 2013

 
FINISHED PRODUCTS>> CONSTRUCTING>> CONCRETE SUBSTITUTE
Sysytem and method of forming a roadway comprising polyurethane

A method of forming a roadway is provided comprising providing a reclaimer-stabilizer machine, providing in-situ soil materials, forming a base layer using the reclaimer-stabilizer machine, forming a wear layer over the base layer, and wherein the wear layer comprises a polyurethane composition in addition to the in-situ materials. In some...

Company name:
Published On: Friday August 23rd, 2013

 
Polyurethane based road forming

Provided herein are roadways containing polyurethane materials. A roadway includes a base layer of a compacted in situ material and/or a wear layer disposed on the base layer. One or both of these layers may include the polyurethane material to bind other components in the layers and to form more robust and durable roadway structures capable of...

Company name:
Published On: Friday August 23rd, 2013

 
FINISHED PRODUCTS>> BEDDING
Anatomical, pressure-evenizing mattress overlay and associated methodology

A method and structure for furnishing pressure-evenized, dynamic-reaction anatomical support. The method includes (a) supporting the anatomy with a 100% open cell viscoelastic foam, and (b) within the foam, reacting to both static and dynamic, anatomically-produced foam indentations to expand and contract cell-openness size, whereby deeper/sharper...

Company name:
Published On: Friday August 23rd, 2013

 
FINISHED PRODUCTS>> PRINTING>> PRINTING ROLLERS
High conductive, soft urethane rollers

Rollers for high speed printers and paper handling devices are fabricated by reacting polymeric diphenylmethane diisocyanate with a polyester polyol and/or polyester polyamine and an optional extender, together with a metal salt, a catalyst, and one or more other optional additives, including a liquid conductive additive. The resulting rollers...

Company name: Mearthane Products
Published On: Tuesday August 20th, 2013

 
FINISHED PRODUCTS>> INDUSTRIAL>> PADS
Acrylate polyurethane chemical mechanical polishing layer

A chemical mechanical polishing pad comprising an acrylate polyurethane polishing layer, wherein the polishing layer exhibits a tensile modulus of 65 to 500 MPa; an elongation to break of 50 to 250%; a storage modulus, G', of 25 to 200 MPa; a Shore D hardness of 25 to 75; and a wet cut rate of 1 to 10 .mu.m/min.

Company name: Rohm and Haas Electronic Materials
Published On: Friday August 23rd, 2013

 
Polishing pad and method for producing same

A polishing pad has a polishing layer including a non-foamed polyurethane, wherein the non-foamed polyurethane is a reaction cured body of a polyurethane raw material composition containing an isocyanate-terminated prepolymer obtained by reacting a prepolymer raw material composition containing a diisocyanate, a high-molecular-weight polyol and a...

Company name: Toyo Tire & Rubber Co., Ltd
Published On: Friday August 23rd, 2013

 
CHEMISTRY
Dehydration of alcohols on acidic catalysts

The present invention is a process for the dehydration of an alcohol having at least 2 carbon atoms to make the corresponding olefin, comprising: a) introducing in a reactor a stream (A) comprising at least an alcohol, optionally water, optionally an inert component, b) contacting said stream with an acidic catalyst in said reactor at conditions...

Company name: Total Research & Technology Feluy SA
Published On: Friday August 23rd, 2013

 
Microemulsions

The invention provides microemulsions comprising a) at least one compound having two or more isocyanate-reactive hydrogen atoms, b) at least one apolar organic compound, c) at least one halogen-free compound effective in causing said compounds a) and b) to build a microemulsion, comprising at least one amphiphilic compound ci) selected from the...

Company name: BASF SE
Published On: Friday August 23rd, 2013

 
Polyurethane derivatives, composition thereof and dye additives comprising the polyurethane...

A polyurethane derivative and a composition thereof are disclosed. The polyurethane derivative of the present invention has a structure of formula (I). The polyurethane derivative and the composition thereof can be used for increasing light fastness. ##STR00001##

Company name: Everlight Chemical Industrial
Published On: Friday August 23rd, 2013

 
Polyurethane

A polyurethane that is a reaction product of reaction components, the reaction components comprising (a) a polyol; (b) a polyisocyanate selected from an aromatic, alicyclic or aliphatic polyisocyanate or combinations thereof; (c) a mixture of chain extenders that includes (i) a chain extender having a sulfur bridge in an amount of between 1 and 30...

Company name: Michelin
Published On: Tuesday August 13th, 2013

 
RECYCLABLE MATERIALS
Regrind polyurethane with glycol or polyol additive

A surface element including a recycled polyurethane and a glycol or polyol additive is provided. The surface element has an increased tearability as compared to the recycled polyurethane. An article of footwear and methods of preparing an article of footwear are also provided.

Company name: Nike
Published On: Friday August 23rd, 2013

 
 
LATEST TRENDS >> PAPERS
PU RAW MATERIALS
Polyurethanes: Versatile Materials and Sustainable Problem Solvers for Today’s Challenges

Polyurethanes are the only class of polymers that display thermoplastic, elastomeric, and thermoset behavior depending on their chemical and morphological makeup. In addition to compact polyurethanes, foamed variations in particular are very widespread, and they achieve their targeted properties at very low weights. The simple production of...

Company name: Bayer MaterialScience AG
Published On: Monday August 26th, 2013

 
PU RAW MATERIALS>> ADDITIVES>> FLAME RETARDANT
A commercial phosphorous-nitrogen containing intumescent flame retardant for thermoplastic...

The aim of this work is to develop a halogen-free thermoplastic polyurethane (TPU) composite with significantly improved fire performance by using a highly commercial phosphorous–nitrogen containing intumescent flame retardant (P–N IFR). Based on the characterizations of thermogravimetric analysis and in situ Fourier transform infrared spectra, P–N...

Company name: Chinese Academy of Sciences
Published On: Monday August 26th, 2013

 
FOAMS>> RIGID
Flame retardant property of novel intumescent flame retardant rigid polyurethane foams

The novel intumescent flame retardant rigid polyurethane foams ((PEPS-RPUF) were prepared based on a P-N containing intumescent flame retardant, poly ethanediamine spirocyclic pentaerythritol bisphosphonate (PEPS). The flammability, thermal, and mechanical properties of PEPS-RPUF were discussed. Scanning electron microscopy (SEM) and compression...

Company name: North University of China
Published On: Monday August 26th, 2013

 
CASE>> COMPOSITES
Cellular Fiber‐Reinforced Polyurethane Composites with Sensory Properties

The continuing trend towards efficient lightweight solutions is leading to an increasing use of structural components made of fiber-reinforced polymers (FRP). In order to further increase the lightweight potential, cellular polymers and associated manufacture methods are gaining in importance. Especially for the widespread application of FRP...

Company name: University of Technology Dresden
Published On: Monday August 26th, 2013

 
CASE>> COMPOSITES>> NANOMATERIALS
A polycaprolactone‐based compatibilization treatment to improve dispersion and interphase...

Silica nanoparticles (SNs) were grafted with ε-caprolactone using an environmentally friendly approach. By using tartaric acid as a catalyst and the silanol groups as initiators, grafted nanoparticles (GNs) with organic weight fractions (wof) within the range 0–46 wt% were synthesized. Thermogravimetric (TGA) and infrared analysis were used to...

Company name: University of Perugia
Published On: Monday August 26th, 2013

 
SHAPE MEMORY MATERIALS
Biobased hyperbranched shape‐memory polyurethanes: Effect of different vegetable oils

Hyperbranched polyurethanes were synthesized from poly(ε-caprolactone) diol as a macroglycol, butanediol as a chain extender, a monoglyceride of a vegetable oil (Mesua ferrea, castor, and sunflower oils separately) as a biobased chain extender, triethanolamine as a multifunctional moiety, and toluene diisocyanate by a prepolymerization...

Company name: Tezpur University
Published On: Monday August 26th, 2013

 
Actuation design for high‐performance shape memory polyurethanes

A series of shape memory polyurethanes were synthesized from poly(tetramethylene glycol), 4,4-methylene diphenyl diisocyanate, and 1,3-butanediol. The prepolymers with different molecular weights (Mc) were capped with 2-hydroxyl ethylacrylate or 3-aminopropyltriethoxysilane (APTES) and crosslinked by UV curing or a sol–gel reaction. Variations of...

Company name: Pusan National University
Published On: Monday August 26th, 2013

 
 

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