Polysulfide-based resin composition, polysulfide-based resin, an

Details Polysulfide-based resin composition, polysulfide-based resin, an Polysulfide-based resin composition, polysulfide-based resin, an

1996-04-30

1999-09-21

Marquis, Melvyn I.

Stock material or miscellaneous articles

Article of intermediate shape

528 60, 528 66, 528109, 528376, B29B 102

Patent

active

059552069

ABSTRACT:
A composition for polysulfide-based resin comprising a polythiol having 4 or more functional groups and a compound having a reactive unsaturated bond(s) and/or b epoxy group(s) and/or c iso(thio)cyanato group(s) in one molecule (however, a+b+c.gtoreq.2, and a and b are not simultaneously 0). A polysulfide-based resin obtained by curing the composition, an optical material comprising the resin, a lens consisting of the optical material and a method for producing the polysulfide-based resin are also set forth.

REFERENCES:
patent: 5130200 (1992-07-01), Huynh-Tran
patent: 5374668 (1994-12-01), Kanemura et al.
patent: 5608115 (1997-03-01), Okazaki et al.
Patent Abstracts of Japan, vol. 015, No. 052 (C-0803), Feb. 7, 1991 & JP02283731 (Toray Ind. Inc.) Nov. 21, 1990 *abstract*.
Patent Abstracts of Japan, vol. 015, No. 256 (C-0845), Jun. 28, 1991 & JP03084031 (Mitsui Toatsu Chemicals, Inc.), Apr. 9, 1991 *abstract*.

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