Patent ID: 11866648
Assignee: MITSUI CHEMICALS, INC.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  G | IPC C  G

Claim 6:
7. The process for producing a polymerizable composition for optical materials according to claim 1,
wherein the polyisocyanate compound (i) is at least one compound selected from pentamethylene diisocyanate, hexamethylene diisocyanate, xylylene diisocyanate, bis(isocyanatocyclohexyl)methane, isophorone diisocyanate, 2,5-bis(isocyanatomethyl)bicyclo-[2.2.1]-heptane, 2,6-bis(isocyanatomethyl)bicyclo-[2.2.1]-heptane, tolylene diisocyanate, 4,4′-diphenylmethane diisocyanate, and phenylene diisocyanate.