Hard contact lens material consisting of alkyl fumarate and sili

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

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526279, 526323, C08F 1220, C08F21220, C08F23008

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active

048682608

ABSTRACT:
A hard contact lens material comprising a copolymer made of at least two kinds of fumaric acid diester at least one of which is a dialkyl fumarate as main components. The hard contact lens material has high oxygen permeability, transparance and excellent physical properties.

REFERENCES:
patent: 4559059 (1985-12-01), Su
patent: 4632968 (1986-12-01), Yokota et al.
Chem. Abstracts, vol. 78, entry 72944u.
Chem. Abstracts, vol. 77, entry 153989u.
Chem. Abstracts, vol. 70, entry 29667d.

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