发明申请
- 专利标题： WATER-PROCESSABLE SILICONE-CONTAINING PREPOLYMERS AND USES THEREOF
- 专利标题（中）： 含水硅氧烷的预处理剂及其用途
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申请号： US13253186申请日： 2011-10-05
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公开(公告)号： US20120088861A1公开(公告)日： 2012-04-12
- 发明人: Jinyu Huang , Frank Chang , Robert Scott , Arturo Norberto Medina , Manivakkam J. Shankernarayanan , Selma Kuyu , Dawn Alison Smith , Daqing Wu
- 申请人： Jinyu Huang , Frank Chang , Robert Scott , Arturo Norberto Medina , Manivakkam J. Shankernarayanan , Selma Kuyu , Dawn Alison Smith , Daqing Wu
- 主分类号： G02C7/04
- IPC分类号： G02C7/04 ; C08F230/08 ; B29D11/00 ; C08F290/06
摘要：
The invention provide a class of water-processable polymerizable prepolymers which comprises (1) siloxane-containing monomeric units derived at least one siloxane containing monomer having one hydrophilic group or chain and/or polysiloxane-containing crosslinking units derived from at least one hydrophilized polysiloxane or chain-extended polysiloxane crosslinker; (2) hydrophilic monomeric units derived from one or more hydrophilic vinylic monomers; and (3) from about 0.05% to about 5% by weight of polymerizable units each having a pendant or terminal, ethylenically-unsaturated group and free of any polysiloxane segment. The prepolymer comprises from about 20% to about 50% by weight of silicone relative to the total weight of the prepolymer and has a high water solubility or dispersibility of at least about 5% by weight in water and suitable for making silicone hydrogel contact lenses.