Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From sulfur-containing reactant
Patent
1991-10-18
1993-03-02
Henderson, Christopher
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From sulfur-containing reactant
5253285, 525350, 526289, 351159, C08G 7500, C08F22800
Patent
active
051910616
ABSTRACT:
A cured resin for high-fraction lenses is disclosed, which is obtained by polymerizing a composition comprising (A) from 70 to 99 parts by weight of a sulfur-containing aromatic (meth)acrylate represented by formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a methyl group; R.sup.2 represents an alkylene group; Ar represents an arylene group, an arylene group substituted with a halogen atom except a fluorine atom, an aralkylene group, or an aralkylene group substituted with a halogen atom except a fluorine atom; X represents --O-- or --S--; Y represents --S-- or --SO.sub.2 -- when X is --O--, or Y represents --S--, --SO.sub.2 --, --CO--, an alkylene group, an aralkylene group, an alkylene ether group, an aralkylene ether group, an alkylene thioether group, or an aralkylene thioether group when X is --S--; m and n each represents an integer of from 1 to 5; and p represents 0 or an integer of from 1 to 10, (B) from 1 to 30 parts by weight of at least one mercapto compound selected from (B-1) a compound represented by formula (II): ##STR2## wherein R.sup.6 represents a methylene group or an ethylene group; R.sup.7 represents a hydrocarbon group having from 2 to 15 carbon atoms or an alkyl ether residue having from 2 to 15 carbon atoms; and r represents an integer of from 2 to 6, (B-2) a compound represented by formula (III): ##STR3## wherein W represents ##STR4## wherein s and u each represents an integer of from 1 to 8, and t represents 0 or an integer of 1 or 2, and (B-3) a compound represented by formula (IV): ##STR5## wherein R.sup.8 and R.sup.9 each represents an alkylene group having from 1 to 3 carbon atoms; a and b each represents 0 or 1; and c represents 1 or 2, and (C) up to 50 parts by weight of an ethylenically unsaturated monomer copolymerizable with the compound represened by formula (I). The resin has a high refractive index, high transparency, and excellent impact resistance.
REFERENCES:
WO90/04587, May 3, 1990 (abstract).
Chemical Abstracts, vol. 107, No. 22, p. 19, Nov. 1987, & JP-A-62 10 102, Nobuo Hisada, et al., "Reactive Emulsifying Agents".
Chemical Abstracts, vol. 108, No. 8, p. 60, Feb. 1988, & JP-A-62 195357, Mitsutoshi Aritomi, et al., "Sulfur-Containing(Meth)Acrylates for Transparent Polymers with High Refractive Index".
Hayakawa Seiichiro
Isaka Tsutomu
Watari Fumie
Zanka Yukihito
Henderson Christopher
Misubishi Petrochemical Co., Ltd.
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