The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 1987
Filed:
Dec. 12, 1985
Akira Ohmori, Ibaraki, JP;
Nobuyuki Tomihashi, Takatsuki, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
This invention provides a material for contact lenses comprising a polymer having 10 to 100 5 by weight of a structural unit represented by the formula ##STR1## wherein R is (CH.sub.2).sub.l R.sup.1 or --CH.sub.2).sub.m (CF.sub.2).sub.n CFZ.sup.1 Z.sup.2 in which R.sup.1 is oxygen-containing fluoroalkyl, Z.sup.1 and Z.sup.2 are the same or different and each hydrogen, fluorine or fluoroalkyl, l is an integer of 1 to 5, m is an integer of 1 to 4 and n is 0 or an integer of 1 to 10, 0 to 60% by weight of a structural unit represented by the formula ##STR2## wherein R.sup.2 is lower alkyl, and 0 to 80% by weight of a structural unit represented by the formula ##STR3## wherein X is hydroxyl or carboxyl and p is an integer of 1 to 5.