Invention Grant
US08147728B2 Pad transfer printing of silicone hydrogel lenses using colored ink
有权
使用彩色墨水的硅胶水凝胶镜片的移印印刷
- Patent Title: Pad transfer printing of silicone hydrogel lenses using colored ink
- Patent Title (中): 使用彩色墨水的硅胶水凝胶镜片的移印印刷
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Application No.: US11093819Application Date: 2005-03-30
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Publication No.: US08147728B2Publication Date: 2012-04-03
- Inventor: Michael Hugh Quinn , Gregory Carlson , Barry L. Atkins
- Applicant: Michael Hugh Quinn , Gregory Carlson , Barry L. Atkins
- Applicant Address: CH Basel
- Assignee: Novartis AG
- Current Assignee: Novartis AG
- Current Assignee Address: CH Basel
- Agent Sheng-Hsin Hu; Jian Zhou
- Main IPC: B29D11/00
- IPC: B29D11/00

Abstract:
The present invention provides a method for making colored silicone hydrogel contact lenses. The method of the invention comprises the steps of: (a) applying a color coat to at least a portion of at least one of molding surfaces of a lens mold with an ink, wherein the ink comprises at least one colorant, a binder polymer, an adhesion promoter, and optionally a diluent, wherein the binder polymer is a copolymerization product of a polymerizable mixture including (i) at least one hydrophilic vinylic monomer; (ii) at least one functionalizing vinylic monomer containing at least one functional group selected from the group consisting of hydroxyl group —OH, amino group —NHR (wherein R is hydrogen or C1 to C8 alkyl), carboxylic group —COOH, epoxy group, amide group —CONHR, and combinations thereof; (iii) at least one silicone-containing vinylic monomer or macromer, and (iv) optionally one or more components selected from the group consisting of a polymerization initiator, a chain transfer agent, and a solvent, wherein the mold has a lens-forming cavity between the molding surfaces, wherein the colored coat contains a first surface exposed to the interior of the lens-forming cavity and a second surface in contact with the molding surface; (b) curing the ink printed on the mold; (c) dispensing a silicone hydrogel lens-forming material into the lens-forming cavity of the mold; (d) curing the lens-forming material within the lens-forming cavity to form the contact lens, whereby the colored coat detaches from the molding surface and becomes integral with the body of the contact lens.
Public/Granted literature
- US20050218536A1 Colored ink for pad transfer printing of silicone hydrogel lenses Public/Granted day:2005-10-06
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