发明名称 |
Stabilization of dilute aqueous solutions of high molecular weight homopolymers and copolymers based on water-soluble ethylenically unsaturated compounds |
摘要 |
Dilute aqueous solutions of high molecular weight polymers of acrylamide or methacrylamide or of homopolymers or copolymers of salts of ethylenically unsaturated C3-C5-carboxylic acids are stabilized to thermal degradation by adding (a) at least 20 ppm of an inorganic sulfur compound, in which the sulfur has an oxidation number of +2 to +5, and (b) at least 20 ppm of a complexing agent for metal ions.
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申请公布号 |
US4581405(A) |
申请公布日期 |
1986.04.08 |
申请号 |
US19840653586 |
申请日期 |
1984.09.24 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
MARTISCHIUS, FRANZ-DIETER;HEIDE, WILFRIED |
分类号 |
C08J3/03;(IPC1-7):C08K3/32;C08K5/53;C08K5/17;C08K3/30 |
主分类号 |
C08J3/03 |
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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