发明名称 |
Production of polyamic acids or polyimides, useful as heat-resistant adhesives and coatings, comprises reacting tetracarboxylic dianhydride with aromatic diamine, siloxane diamine and aromatic polyamine |
摘要 |
Production of polyamic acids (I) or polyimides (II) comprises: (a) reacting a tetracarboxylic dianhydride with an aromatic diamine, a siloxane diamine and an aromatic polyamine; and (b) optionally converting the resulting polyamic acid to a polyimide by thermal or chemical means. Production of polyamic acids (I) or polyimides (II) comprises: (a) reacting a tetracarboxylic dianhydride with an aromatic diamine, a diamine having a siloxane structure of formula (III) and an aromatic polyamine of formula (IV) or (V); and (b) optionally converting the resulting polyamic acid to a polyimide by thermal or chemical means: R4 = 1-20C alkylene; n' = 1-20; A1 = a group of formula (i)-(iii); A2 = a group of formula (iv) or (v); R = O, CH2, CO or SO2; n1 = 0-4; n2 = 0-3; X = an acid; q = the basicity of X.
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申请公布号 |
DE10008121(A1) |
申请公布日期 |
2001.09.06 |
申请号 |
DE2000108121 |
申请日期 |
2000.02.22 |
申请人 |
SAEHAN INDUSTRIES INC., KYONGSAN |
发明人 |
LEE, KYUNG ROK;KIM, SOON SIK;CHANG, KYEONG HO;KWEON, JEONG MIN |
分类号 |
C08G73/10;(IPC1-7):C08G73/10 |
主分类号 |
C08G73/10 |
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