Halogen-containing resin lens material

Details Halogen-containing resin lens material Halogen-containing resin lens material

1986-01-29

1987-11-03

Henderson, Christopher

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5262923, 526296, G02B 104, C08F22030

Patent

active

047040068

ABSTRACT:
A halogen-containing resin lens material, having a refractive index of n.sub.D =1.55 or higher, an Abbe number of 27 or higher and good dyeable property and comprising a copolymer containing 10 to 90 wt. % of a monomer (I) represented by the formula (I) shown below: ##STR1## wherein: R.sup.1 represents hydrogen or CH.sub.3 group; X.sup.1 a halogen atom except for fluorin; and p the number of substituted halogens which is an integer selected from 1 to 5, and n is an integer selected from 1 to 4, R.sup.1 existing in plural number and being either identical or different, X.sup.1 when existing in plural number being either identical or different and 10 to 70 wt. % of a crosslinking monomer having two or more polymerizable functional groups (the percentages being based on the copolymer weight).

REFERENCES:
patent: 3277053 (1966-10-01), Hill
patent: 4578445 (1986-03-01), Sakagami
Chem Abst, 97, 110992,k.
Chem Abst, 98, 17713,f.
Chem Abst, 99, 196251,u.
Chem Abst, 100, 104689,f.

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