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:
Jul. 03, 2001
Filed:
Feb. 11, 1999
Eri Ito, Kasugai, JP;
Menicon Co., Ltd., Aichi-ken, JP;
Abstract
An ocular lens material comprising a polymer prepared by polymerizing a polymerizable component for an ocular lens, containing (A) 20 to 50% by weight of a silicon-containing alkyl acrylate, (B) 20 to 50% by weight of a polysiloxane macromonomer in which a polymerizable group bonds to a siloxane main chain through at least one urethane bond, (C) 10 to 50% by weight of at least one of hydroxyalkyl acrylates and at least one of hydroxyalkyl methacrylates, and (D) 0.01 to 10% by weight of a crosslinkable compound having at least two polymerizable groups, and a process for producing the same. The ocular lens material shows excellent stain resistance and excellent flexibility at the same time in addition to excellent transparency, and can be easily produced by the process.