发明授权
- 专利标题： Method of preparing a urethane prepolymer and polymer
- 专利标题（中）： 制备氨基甲酸酯预聚物和聚合物的方法
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申请号： US350946申请日： 1982-02-22
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公开(公告)号： US4439552A公开(公告)日： 1984-03-27
- 发明人: Richard R. Dedolph
- 申请人： Richard R. Dedolph
- 申请人地址： IL Chicago
- 专利权人： Gravi-Mechanics Co.
- 当前专利权人： Gravi-Mechanics Co.
- 当前专利权人地址： IL Chicago
- 主分类号： A01G31/00
- IPC分类号： A01G31/00 ; A01G31/02 ; C08G18/48 ; C09K17/30 ; C08G18/14
摘要：
A method of forming a hydrophilic urethane prepolymer comprising the steps of reacting an isocyanate compound to a hydrophilic polyether or polyester compound which has been heated to such a temperature that the temperature of the reactants after addition of isocyanate is at least as high as about 120.degree. C. The resulting urethane prepolymer may be reacted with water to form a cellular urethane polymer.
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