Curing of oligo(diene-isoprene-urethane-epoxy) oligomer in the presence of an active plasticizer, 1,2-epoxycyclopentane, and of its adducts with imidazoles

Fedoseev, M. S.; Devyaterikov, D. M.; Rybina, G. V.; Meshechkina, A. E.

doi:10.1134/s1070427213090217

Cited by 6 publications

(2 citation statements)

References 2 publications

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“…Fedoseev et al studied the curing of an epoxy-urethane terminated diene-isoprene with different curing agents in the presence of plasticizers. 38 The epoxy-urethane was synthesized by reacting a hydroxy terminated butadiene-isoprene copolymer with TDI, followed by glycidol. Curing agents studied included isophorone diamine (IPDA) and methylendic anhydride; the plasticizer was 1,2-epoxy cyclopropane.…”

Section: Adhesives and Elastomersmentioning

confidence: 99%

Glycidyl carbamate functional resins and their applications: a review

Webster

2020

Polymer International

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The glycidyl carbamate functional group consists of an epoxide adjacent to a carbamate or urethane. Glycidyl carbamate functional resins are compounds that have two or more glycidyl carbamate groups. Glycidyl carbamate resins can be cured through the epoxy groups with any of the typical curing agents currently used for epoxy systems such as amines, anhydrides or phenolics. An advantage of glycidyl carbamate resins is that the end user can use epoxy curing chemistry to form thermosets and obtain a polyurethane without having to handle isocyanates. This review surveys the peer-reviewed and patent literature on glycidyl carbamate functional resins and their applications. Glycidyl carbamate compositions have been explored for use in adhesives, sealants, elastomers and coatings. In most of the reported studies, glycidyl carbamate resins offer improved adhesion, flexibility and faster curing compared to conventional epoxy resin systems, making it an attractive alternative thermosetting polymer system.

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Section: Adhesives and Elastomersmentioning

confidence: 99%

Glycidyl carbamate functional resins and their applications: a review

Webster

2020

Polymer International

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“…This class includes polyurethanes, [1][2][3] poly(urethaneureas), 4,5 and oligourethane epoxide-based polymers. [6][7][8] A wide range of components used in the synthesis (oligodiols, diisocyanates, low molecular mass chain extenders, cross-linking agents) of these polymers can give polyurethanes and poly(urethaneureas) with various combined properties. [9][10][11][12][13][14] Plasticizers are introduced into polyurethanes or poly(urethaneureas) to improve their elasticity at low temperatures.…”

Section: Introductionmentioning

confidence: 99%

The effect of plasticization on the properties of poly(urethaneureas) based on oligoether diols, 2,4-toluenediisocyanate, and aromatic diamines

Tereshatov

Макарова

Senichev

et al. 2018

Journal of Elastomers & Plastics

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Segmented poly(urethaneureas) (SPUUs) modified with low glass transition temperature chemically inert liquids are of interest due to their controllable properties and potential applications under various environmental conditions. Investigation into the influence of plasticizers on the properties of SPUUs based on oligotetramethyleneoxide diol (polytetramethyleneoxide), oligopropyleneoxide diol (polypropyleneoxide), 2,4toluenediisocyanate, Ethacure-300, and methylene-bis-o-chloroaniline was conducted. Partial crystallization of polytetramethyleneoxide segments was identified during cooling of some SPUU samples plasticized by di-(2-ethylhexyl)sebacate (DEHS) and tributyl phosphate. Polypropyleneoxide segments did not crystallize under the same conditions. A low crystallization temperature for the amorphous component of the polymer matrix in SPUU (À100 C to 103 C) was attained at a molecular mass (M n) of soft segments equal to 2000 g mol À1 and a DEHS concentration equal to 40-45%. A relationship between the mechanical properties of plasticized SPUU, microphase segregation, and dilution of the polymer matrix was found. For the first time, the effect of dilution with plasticizer on the strength of elastomers was considered. The plasticization effect on the mechanical properties of SPUU was investigated in the temperature diapason from 50 C to À70 C. The results of these investigations can be used in various technologies including the design of SPUUs with high elastic properties at temperatures as low as À70 C, typical of extreme conditions of the Arctic climate.

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