发明授权
- 专利标题: Polyaddition products containing uretidione groups and process for their preparation
- 专利标题(中): 含有脲基二酮基团的加成产物及其制备方法
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申请号: US292500申请日: 1981-08-13
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公开(公告)号: US4483798A公开(公告)日: 1984-11-20
- 发明人: Josef Disteldorf , Rainer Gras , Werner Hubel , Elmar Wolf , Horst Schnurbusch
- 申请人: Josef Disteldorf , Rainer Gras , Werner Hubel , Elmar Wolf , Horst Schnurbusch
- 申请人地址: DEX Herne
- 专利权人: Chemische Werke Huls Aktiengesellschaft
- 当前专利权人: Chemische Werke Huls Aktiengesellschaft
- 当前专利权人地址: DEX Herne
- 优先权: DEX3030572 19800813
- 主分类号: C07D229/00
- IPC分类号: C07D229/00 ; C08G18/79 ; C08G18/80
摘要:
A method for producing a polyaddition product of isophorone diisocyanate and diols which comprises, reacting a uretidione group-containing dimer of isophoronediisocyanate, which is decomposable by heat into 98% isophorone diisocyanate, with a diol, wherein the ratio of NCO to OH groups is such that the final polyaddition product has free terminal NCO groups, or free terminal OH groups.
公开/授权文献
- US5998115A Photographic elements containing composite reflective grains 公开/授权日:1999-12-07
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