PHOTOPOLYMER COMPOSITION FOR THE PRODUCTION OF THERMAL-RESISTANT OBJECTS BY THE METHOD OF LASER STEREOLITHOGRAPHY Russian patent published in 2018 - IPC G03F7/27 G03F7/28 G03F7/31 

FIELD: chemistry.

SUBSTANCE: invention relates to photopolymerizable compositions for use in manufacturing techniques using the method of laser stereolithography. Composition includes poly(N-allyl(2,2'-m-phenylene)-5,5'-dibenzimidazole oxide), N,N'-dimethylacrylamide, an acrylamide component selected from 4,4'-diphenylphthalide diacrylamide, 4,4'-oxydiphenyl diacrylamide, diacrylamide[di(4,4'-diphenyloxydisophthaloylamido)]-phenyl-4'-phenyloxide, diacrylamide [penta(4,4'-diphenyloxydisophthaloylamido)]-phenyl-4'-phenyloxide, and a photoinitiator of 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butanone-1.

EFFECT: proposed composition has sufficient photosensitivity for the manufacture of three-dimensional products with a thermal stability of 380–440 °C from an arbitrary shape under laser 3D stereolithography using economical and small-sized lasers with λ= 405 nm.

1 cl, 4 ex