发明名称 |
Aromatic polyether sulphones |
摘要 |
Polyether sulphones based on diphenols of the formula (I) <IMAGE> in which R<1> and R<2>, independently of one another, are hydrogen, halogen, C1-C8-alkyl, C5-C6-cycloalkyl, C6-C10-aryl or C7-C12- aralkyl, m is an integer from 4 to 7, R<3> and R<4>, individually selectable for each X, are, independently of one another, hydrogen or C1-C6-alkyl, and X is carbon, with the proviso that R<3> and R<4> are simultaneously alkyl on at least one atom X, and the preparation thereof.
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申请公布号 |
DE3833385(A1) |
申请公布日期 |
1990.04.05 |
申请号 |
DE19883833385 |
申请日期 |
1988.10.01 |
申请人 |
BAYER AG, 5090 LEVERKUSEN, DE |
发明人 |
REUTER, KNUD, DIPL.-CHEM. DR.;FREITAG, DIETER, DIPL.-CHEM. DR., 4150 KREFELD, DE;WEYMANS, GUENTHER, DIPL.-PHYS. DR., 5090 LEVERKUSEN, DE;DHEIN, ROLF, DIPL.-CHEM. DR., 4150 KREFELD, DE |
分类号 |
B01D71/68;C08G75/23;C08L71/00 |
主分类号 |
B01D71/68 |
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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