Composition for high refractive index lens comprising copolymer

Details Composition for high refractive index lens comprising copolymer Composition for high refractive index lens comprising copolymer

1995-03-13

1996-08-06

Henderson, Christopher

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

528376, C08F22804

Patent

active

055434827

ABSTRACT:
The present invention provides a composition comprising a vinylbenzylthio compound represented by the following general formula ##STR1## in which m is an integer of 2-3, n is an integer of 1 and R is a hydrocarbon group of 3-6 carbon atoms or a hydrocarbon group of 3-6 carbon atoms containing a bivalent sulfur atom, and a monomer radical-copolymerizable with said vinylbenzylthio compound.
Said composition is useful for producing a plastic lens having a high refractive index, a small specific gravity, excellent heat resistance and excellent processability.

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