Neuartige Epoxyurethanverbindungen und deren Wärmehärtende Polymere

Details

Veröffentlichungs-Nr.

EP4223821

Aktenzeichen

EP22154900

Anmeldetag

3. Februar 2022

Veröffentlichung

9. August 2023

Rechtsraum

EP

IPC

C08G18/32C07C263/00C07C273/00C08G18/64C08G18/71C09D163/00C08G18/28C08G18/73C08G18/78

Abstract

Provided is an epoxy-functional polyurethane comprising a reaction product of (A) a polyisocyanate; and (B) a compound, HX-Y-(Z)<n> wherein, X is O, N, or S, Y is a linear or branched C<1>-C<15> alkyl group, and Z is -CH=CDE or Z is -F-O-G-CH=CDE, n is an integer from 1 to 3, wherein D and E independently are selected from H, a linear C<1>-C<5> alkyl group, and a branched C<1>-C<5> alkyl group, F and G independently are selected from H, linear or branched C<1>-C<15> alkyl groups, and wherein compound (B) comprises a vinyl group capable of being oxidized to a corresponding epoxy group. Also provided is a process for producing an epoxy-functional polyurethane, the process comprising (1) reacting (A) a polyisocyanate; and (B) a compound: HX-Y-(Z)<n> wherein, X is O, N, or S, Y is a linear or branched C<1>-C<15> alkyl group, and Z is -CH=CDE or Z is -F-O-G-CH=CDE, n is an integer from 1 to 3, wherein D and E independently are selected from H, a linear C<1>-C<5> alkyl group, and a branched C<1>-C<5> alkyl group, F and G independently are selected from H, linear or branched C<1>-C<15> alkyl groups, optionally, in the presence of a catalyst to form a vinyl-functional carbamate; (2) forming a mixture containing the vinyl-functional carbamate, a ketone, water, and a base; and (3) feeding an aqueous solution of oxone into the mixture to oxidize the vinyl-functional carbamate to the epoxy-functional polyurethane. The epoxy-functional polyurethanes of the invention may find use in or as coatings, adhesives, sealants, films, elastomers, castings, foams, and composites.

Anmelder

Firma

Covestro LLC

Land

🇺🇸 USA

Fachgebiete