Molded polymer article having a hydrophilic surface and process for producing the same
September 18, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesIn-mold scratch resistant coating for peroxide curable urethane elastomers Vinyl-urethane substituted hydroxyethyl cellulose Method for forming coated plastic optical elements Method of manufacturing a contact lens Contact lens and method of producing a contact lens Pad printing coating composition and pad printing process Molded polymeric object with wettable surface made from latent-hydrophilic monomers Methods of forming an extended wear ophthalmic lens having a hydrophilic surface Patent #: 5789461 InventorsAssigneeApplicationNo. 157100 filed on 09/18/1998US Classes:523/106, Contact lens making composition264/1.7, Composite or multiple layer427/2.24, Implantable permanent prosthesis (i.e., artificial body member) (e.g., pacemaker, lens, cornea, glaucoma shunt, heart valve, muscle, spinal disc, breast, internal organ)427/133, MOLD COATING523/105, Nonmedicated composition specifically intended for contact with living animal tissue or process of preparing; other than apparel523/107Silicon-containing organic polymerExaminersPrimary: Szekely, PeterForeign Patent References
International ClassesG02C 007/04B29D 011/00 C08J 007/16 Foreign Application Priority Data1997-10-09 JPAbstractA molded polymer article comprises a main molded body having on the surface thereof a hydrophilic polymer layer, the article being obtained by polymerizing both a monomer having a hydrophilic group and coated on the surface of a hydrophilic mold, and a polymerizable composition consisting essentially of a monomer and/or oligomer and placed in the mold. The hydrophilic polymer layer has excellent adhesiveness to the main body of the molded polymer article and excellent durability, so that the high hydrophilic property can be maintained, even when the article is exposed to external forces such as friction, over a long period of time. The molded articles are therefore useful as, in particular, contact lenses.Field of SearchNonmedicated composition specifically intended for contact with living animal tissue or process of preparing; other than apparelContact lens making composition Silicon-containing organic polymer Composite or multiple layer Implantable permanent prosthesis (i.e., artificial body member) (e.g., pacemaker, lens, cornea, glaucoma shunt, heart valve, muscle, spinal disc, breast, internal organ) MOLD COATING | |
