13027-05-9

Usage

InChI:InChI=1/C8H16N2O6/c11-3-5-15-7(13)9-1-2-10-8(14)16-6-4-12/h11-12H,1-6H2,(H,9,13)(H,10,14)

Upstream product

• 96-49-1 [1,3]-dioxolan-2-one 
• 107-15-3 ethylenediamine 

Downstream Products

• 18804-30-3 N,N'-Ethylen-bis-(β-hydroxy-ethylcarbamat)-bis-p-toluolsulfonat 

Relevant academic research and scientific papers

Diisocyanate free and melt polycondensation preparation of bio-based unsaturated poly(ester-urethane)s and their properties as UV curable coating materials

This paper reported the synthesis of bio-based unsaturated poly(ester-urethane)s via a nonisocyanate route, by metal-catalyzed melt polycondensation of itaconic acid with urethanediols. Three novel types of bio-based unsaturated poly(ester-urethane)s, namely, poly(urethanediol 2-itaconic acid), poly(urethanediol 4-itaconic acid) and poly(urethanediol 6-itaconic acid) (poly(U2-IA), poly(U4-IA) and poly (U6-IA) for short code, respectively), were prepared by a green synthetic route. The urethane linkage was formed by the reaction of two equivalent of ethylene carbonate with 1,6-hexanediamine, 1,4-butanediamine and 1,2-ethanediamine to form urethanediols. The urethanediols underwent polymerization with itaconic acid (IA) in the presence of metal catalyst dibutyltin dilaurate (DBTL) to produce low-molecular-weight bio-based unsaturated polyurethanes. Then, these bio-based unsaturated poly(ester-urethane)s were formulated with free radical photoinitiator and curing promoter to prepare UV curable polyurethane systems. After UV curing, the tensile properties, thermal properties and general coating properties of the three UV-cured polyurethane films were similar to that of UV cured polyurethane films prepared by polyurethane-acrylate (PUA). The results suggested that the obtained bio-based unsaturated polyurethanes could serve as coating materials.

Synthesis of novel polyurethane polyesters using the enzyme Candida antarctica lipase B.

A novel enzymatic route has been used to synthesise standard and unusual polyester polyurethanes without employing the usual highly toxic isocyanate intermediates.

ADDITIVES FOR PRODUCING POLYURETHANES

A foam forming composition is provided. The foam forming composition comprises, as an additive, a bis-carbamate compound, a bis-functional amide compound, or combination of two or more thereof. The compositions are suitable for producing flexible foams. Foams formed from compositions comprising these additives exhibit improved properties including improvement in one or more of tensile strength, tear strength, and/or elongation at break.

Carbamate multi (methyl) acrylate as well as preparation method and application thereof (by machine translation)

The preparation method comprises the following steps (: reacting a cyclic carbonate with an organic amine to obtain the carbamate poly)-acrylic acid ester :S1. and reacting the cyclic carbonate with the organic amine, to prepare the radiation-curable urethane polyol ;S2. by catalyzing the ester exchange reaction or the esterification reaction (to prepare the radiation-curable urethane polymethacrylate) and the organic amine to prepare the urethane polyol (through catalyzing the transesterification reaction or the esterification reaction) to obtain the urethane polyalphamethyl (-acrylic acid ester, respectively). The preparation method comprises the following steps: catalyzing the ester exchange reaction or (the esterification reaction to obtain the carbamate polyalphamethyl-). acrylate; and, synthesizing, methyl, acrylic acid, The, preparation method comprises, the following steps: catalyzing the ester exchange reaction or the esterification reaction to obtain the carbamate polyol. (by machine translation)

Synthesis of oligourethanes with terminal hydroxy groups

A method was developed for preparing urethane oligomers with terminal hydroxy groups by polycondensation of urethane glycols. The reaction kinetics was studied, and the optimal reaction conditions were found. Some properties of oligourcthanes were determined.