发明授权
- 专利标题： Stabilization of dilute aqueous solutions of high molecular weight homopolymers and copolymers based on water-soluble ethylenically unsaturated compounds
- 专利标题（中）： 基于水溶性烯属不饱和化合物稳定高分子量均聚物和共聚物的稀水溶液
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申请号： US653586申请日： 1984-09-24
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公开(公告)号： US4581405A公开(公告)日： 1986-04-08
- 发明人: Franz-Dieter Martischius , Wilfried Heide
- 申请人： Franz-Dieter Martischius , Wilfried Heide
- 申请人地址： DEX Ludwigshafen
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DEX Ludwigshafen
- 优先权： DEX3334226 19830922
- 主分类号： C08J3/03
- IPC分类号： C08J3/03 ; C08K3/32 ; C08K3/30 ; C08K5/17 ; C08K5/53
摘要：
Dilute aqueous solutions of high molecular weight polymers of acrylamide or methacrylamide or of homopolymers or copolymers of salts of ethylenically unsaturated C.sub.3 -C.sub.5 -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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