S-alkyl thiocarbamate base resin, plastic lens comprising the re

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...

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264 11, 264 16, 350321, 350410, 528 77, 528 81, 528 84, 528 85, C08G 7500

Patent

active

049469231

ABSTRACT:
Disclosed herein are a novel and highly refractive S-alkyl thiocarbamate base resin useful in preparing lenses and a process for producing the resin comprising reacting one or more of polyisocyanate compounds and one or more of mercapto compound having at least one hydroxyl group, a plastic lens made of the resin, and a process for making a plastic lens of high profile regularity from the resin by using internal mold releasing agents in the casting polymerization process.

REFERENCES:
patent: 4680369 (1987-07-01), Kajimoto et al.
patent: 4689387 (1987-08-01), Kajimoto et al.
patent: 4775733 (1988-10-01), Kanemura et al.
patent: 4780522 (1988-10-01), Kajimoto et al.
patent: 4820789 (1989-04-01), Gonzalez et al.

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