Plastic lens

Details Plastic lens Plastic lens

1988-05-04

1990-06-05

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C08F22022

Patent

active

049315234

ABSTRACT:
A plastic lens is made of a copolymer which has been obtained by copolymerizing 10-80 wt. % of a first monomer represented by the general formula (I) given below and 20-90 wt. % of a second monomer copolymerizable with the first monomer. General formula (I): ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 mean individually a hydrogen atom or methyl group, and n and m denote integers of 0-4 in total.

REFERENCES:
patent: 4487904 (1984-12-01), Fukuda et al.
patent: 4578445 (1986-03-01), Sakagami et al.

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