发明名称 |
Dicarboxylic acid (poly)anhydride modified by a polyisocyanate |
摘要 |
Polyisocyanate-modified dicarboxylic acid (poly)anhydrides (I), which are solid at below 40 degrees C but liq. at above 120 degrees C, are prods. obtd. by reacting org. polyisocyanates with an excess (relative to the NCO/COOH reaction) of free COOH gp.-contg. dicarboxylic acid (poly)anhydrides and opt. also modifying the prods. thus obtd. by reaction with a sub-equiv. amt. (relative to the anhydride gps.) of cpds. contg. anhydride-reactive amino and/or OH gps. Pref. (I) have a COOH gp. content of 0.5-30 wt.%, an anhydride gp. content (as C2O3) of 5-35 wt.% and a N2 content of 0.2-8 wt.%, being obtd. by CO2 splitting-off with NCO/COOH equiv. ratio 0.01-0.6:1 and with the anhydride component being of formula (II) opt. together up to 50 wt.% of the corresp. dicarboxylic acid. In (II), m=1-100; and n=4-16. |
申请公布号 |
EP0695771(A3) |
申请公布日期 |
1996.05.22 |
申请号 |
EP19950111316 |
申请日期 |
1995.07.19 |
申请人 |
BAYER AG |
发明人 |
REUTER, KNUD, DR.;SCHAEFER, WALTER, DR.;MUELLER, HANNS PETER, DR.;MEIER-WESTHUES, HANS-ULRICH, DR.;KAHL, LOTHAR, DR.;BOCK, MANFRED, DR. |
分类号 |
C08G18/02;C08G18/34;C08G18/64;C09D5/03;C09D5/46;C09D7/12;C09D163/00;C09D175/00;C09D175/04 |
主分类号 |
C08G18/02 |
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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