Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1988-06-22
1992-08-25
Page, Thurman K.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526242, 526247, 526279, 526323, C08F 1820, C08F 1802, C08F 2018
Patent
active
051420090
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: 3513225 (1970-05-01), Sherr
patent: 4224427 (1980-09-01), Mueller et al.
patent: 4632968 (1986-12-01), Yokota et al.
patent: 4639229 (1987-01-01), Itoh et al.
Kulkosky Peter F.
Page Thurman K.
Tomei Sangyo Kabushiki Kaisha
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