发明授权
- 专利标题: Cross-linked thermoplastic polyurethane/polyurea and method of making same
- 专利标题(中): 交联热塑性聚氨酯/聚脲及其制造方法
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申请号: US10992907申请日: 2004-11-18
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公开(公告)号: US07417094B2公开(公告)日: 2008-08-26
- 发明人: Pijush K. Dewanjee , John G. Guard
- 申请人: Pijush K. Dewanjee , John G. Guard
- 申请人地址: US CA Fallbrook US CA Carlsbad
- 专利权人: PriPro Polymer, Inc.,Callaway Golf Company
- 当前专利权人: PriPro Polymer, Inc.,Callaway Golf Company
- 当前专利权人地址: US CA Fallbrook US CA Carlsbad
- 代理机构: Vista IP, Law Group LLP
- 代理商 Michael A. Catania; Elaine H. Lo
- 主分类号: C08G18/08
- IPC分类号: C08G18/08
摘要:
A cross-linked thermoplastic polyurea is formed by heating a mixture containing a thermoplastic urethane base material, a monomeric and/or polymeric di-isocyanate comprising between 1 to 10% of the total weight of the mixture, and a diamine comprising between 1 to 10% of the total weight of the mixture. A thermoplastic polyurethane may be formed by substituting hydroquinone for the diamine. The mixture is heated to a temperature within the range of 250° F. to 550° F. The heated mixture, which is flowable, is then injected into at least one injection molding device. The mixture is then cured at a temperature between 150° F. to 250° F. for a period of time between 2 and 36 hours. The cross-linked thermoplastic polyurethane/polyurea retains the excellent flowability characteristics of a thermoplastic urethane while the same time exhibits good abrasion, tensile strength, rebound, and compression set characteristics which are similar to those found in thermoset urethanes.