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Everberg, Belgium

Heyn R.H.,Sintef | Jacobs I.,Huntsman Holland BV | Carr R.H.,Huntsman Europe BVBA
Advances in Inorganic Chemistry

Polyurethanes are ubiquitous polymers that have wide ranging applications and are present in many of the products we use on a daily basis. An entire industry has developed over many years to exploit the inherent versatility of these materials, and major capital investments continue to be made in the production of the chemical components. For the isocyanates, conversion of primary amines by reaction with phosgene has become established as the normal synthesis method, but research aimed at avoiding use of this toxic chemical continues. Replacement of phosgene with CO2 to make intermediate carbamate polymers is one alternative. This chapter will consider the potential of this chemistry by providing a brief introduction to the polyurethane industry and then the current and potential use of CO2 in polyurethane production. Thereafter, various alternative routes to carbamates are discussed, followed by a description of the state-of-the-art technology for the synthesis of aromatic carbamates from aniline, CO2, and an alcohol. The thermodynamics of this reaction requires removal of the coproduced water to increase carbamate yields, and the investigation herein has utilized ionic liquids (ILs) as potential water-sequestering cosolvents. This empirical study has utilized a high-throughput batch-scale reactor to screen a large number of ILs and potential catalysts. Three catalyst/IL combinations, which provide higher selectivity for carbamate than for the in situ-produced precursor diphenylurea, have been identified. One of these combinations has been scaled up and provides the first example of one-pot synthesis of an aromatic carbamate from aniline, CO2, and an alcohol. © 2014 Elsevier Inc. Source

Liu X.,Shanghai JiaoTong University | Du P.,Shanghai JiaoTong University | Liu L.,Shanghai JiaoTong University | Zheng Z.,Shanghai JiaoTong University | And 3 more authors.
Polymer Bulletin

Linear polyurethane was synthesized by Diels-Alder (DA) reaction between a polyurethane prepolymer end-capped with furan rings (MPF) and bismaleimide (BMI). The polymerization kinetics were studied following a preliminary kinetic study of the DA reaction between furfuryl alcohol (FA) and BMI compounds by attenuated total reflection infrared, ultraviolet-visible and in situ 1H NMR spectroscopies, where in situ 1H NMR spectroscopy was selected as the analytical method of choice to study the DA reaction between MPF and BMI. The results showed that the reaction followed second-order kinetics, and the most beneficial experimental conditions to maximize conversion were identified. © 2013 Springer-Verlag Berlin Heidelberg. Source

Du P.,Shanghai JiaoTong University | Wu M.,Shanghai JiaoTong University | Liu X.,Shanghai JiaoTong University | Zheng Z.,Shanghai JiaoTong University | And 4 more authors.
New Journal of Chemistry

Primary mono-amine (furfuryl amine) is functionalized as a chain extender to obtain linear polyurethane bearing pendant furan groups (L-PU-Furan), unlike the previous research (furanic diols as chain extender). Furfuryl amine can functionalize as a chain extender due to the reactivity between the resultant urea group and NCO group at higher temperatures. Pendant cross-linked polyurethane containing a DA bond (C-PU-DA) is obtained from the cross-linking of L-PU-Furan and a bismaleimide (BMI) via a Diels-Alder reaction. L-PU-Furan and C-PU-DA are characterized by 1H NMR, FTIR, DSC and TGA. The results of 1H NMR and gel-solution-gel experiments demonstrate that the C-PU-DA exhibits excellent thermal reversibility. C-PU-DA exhibits good healable properties as evidenced by the evolution of a crack versus temperature observed under polarizing optical microscopy. C-PU-DA exhibits good mechanical properties and healing efficiency, determined by breaking (tensile) strength measurements. © 2014 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique. Source

Huntsman Europe Bvba | Date: 2013-07-11

Chemicals used in industry, namely the textile industry; auxiliary chemicals for the treatment of textiles. Textiles and textile goods, not included in other classes, namely, textile fabrics for the manufacture of clothing, bed linen and table linen, curtains, handkerchiefs, napkins, quilts and towels; bed and table plastic covers. Clothing, namely, clothing for men, women and children, namely, belts, blouses, bottoms, cardigans, coats, corsets, dresses, dusters, gloves, hoodies, jackets, jeans, jerseys, jumpsuits, khakis, knee warmers, lingerie, mantles, nightwear, pants, pullovers, raincoats, scarves, shifts, shirts, shorts, skirts, socks, stockings, suits, sweaters, ties, tops, trousers, t-shirts, underwear, waistcoats, wraps; headwear, hats, caps, bonnets, hoods, berets; footwear, shoes, boots, heels, slippers.

Agency: Cordis | Branch: FP7 | Program: CP-IP | Phase: NMP-2009-2.5-1 | Award Amount: 7.38M | Year: 2010

The rapidly growing use of high-performance composites in high-end sectors such as aerospace, show that these materials are already commercially viable as long as production volumes are limited and applications not primarily cost-driven. In order to achieve a step-change in the application of high-performance composites in larger-volume applications, HIVOCOMP focuses on achieving radical advances in two materials systems that show unique promise for cost effective, higher-volume production of high performance carbon fibre reinforced parts. These are: 1) advanced polyurethane (PU) thermoset matrix materials offering increased mechanical performance and reduced cycle times compared to epoxy, and 2) thermoplastic PP- and PA6-based self-reinforced polymer composites incorporating continuous carbon fibre reinforcements with lower process times and far higher toughness than current thermoplastic and thermoset solutions. The project will analyse and develop these matrix materials, their combination with advanced textile preforms, and optimise material properties for advanced processing technologies, joining technologies (adhesives / welding) and the incorporation and self-diagnosis (sensing) materials. The focus on breakthrough material innovations are complemented by enabling work covering material testing, chemical and micro-mechanical modelling and simulation tool development, as well as LCA, cost and recycling analysis, and prototyping of typical applications, assuring that the proposed material innovations can be successfully translated into high-impact industrial applications. The project drives the material innovations with the road vehicle sector in mind, but has clearly identified spin-off applications in other sectors. The project foresees a step-wise implementation in future products introduced into larger-volume transport applications starting with validated demonstration parts in 2013, and so ensuring a large-scale societal impact of the innovations achieved.

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