发明名称 |
Chain extended urethane dimethacrylate and dental impression formation. |
摘要 |
<p>Disclosed in the present application is a new urethane polyacrylate that has at least one terminal isocyanato acryl pendent radical. Preferably the molecular chain within the acrylate caps has been extended with a polyhydroxy compound just before final end capping with isocyanato acryl. The isocyanato acryl is preferably isocyanatoethyl methacrylate and the urethane is preferably a diisocyanate capped polyether and the polyether radical is preferably oxyalkylene. The method for producing the urethane polyacrylate involves end capping a polyol with diisocyanate yielding a reaction product with two reactive equivalents of isocyanate and then capping less than all of the isocyanate with a hydroxyacrylate, after which the remaining isocyanate is reacted with polyol to provide chain extention. The chain extending polyol is then capped with a isocyanato acryl.</p> |
申请公布号 |
EP0173085(A2) |
申请公布日期 |
1986.03.05 |
申请号 |
EP19850109410 |
申请日期 |
1985.07.26 |
申请人 |
DENTSPLY INTERNATIONAL, INC. |
发明人 |
HARE, PAMELA H. |
分类号 |
C08F299/00;A61C;A61K6/08;A61K6/083;A61K6/09;A61K6/10;C08F2/48;C08F290/00;C08F299/06;C08G;C08G18/00;C08G18/10;C08G18/67;C08G18/81;C08G18/83;H04R25/00;(IPC1-7):C08G18/81;C07C125/06 |
主分类号 |
C08F299/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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