Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1986-08-13
1988-06-21
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523107, 523108, 526520, 526245, C08R 316
Patent
active
047526270
ABSTRACT:
Contact lens compositions containing monomers or cross-linking materials which result in satisfactory moisture content but lowered protein absorption capability are described. Lenses are comfortable for extended wear, but because of lowered protein absorption do not become opaque, and present less infection risk. Included are compositions with over 10% conventional cross-linkers, with 0.1-100% cross-linkers which are unsaturated diesters of the alcohol of the formula HO(CH.sub.2 CH.sub.2 O).sub.n H wherein n is 5-300; or 10-50% copolymerizing monomer which is an ester of an alcohol of similar formula; or 0.1-90% cross-linkers which are diesters of the diol of the formula HOCH.sub.2 (CF.sub.2).sub.m CH.sub.2 OH, and compositions containing more than 10% cross-linker; or with inclusions of 1-40% polyethylene glycol or polyethylene oxide; or copolymers containing 1-60% polyethylene oxide segments.
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Doudy Patrick A.
Michl Paul R.
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