发明授权
- 专利标题： Agent and method for deoiling sand and rock masses
- 专利标题（中）： 脱砂砂岩的代理和方法
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申请号： US422277申请日： 1982-09-23
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公开(公告)号： US4451631A公开(公告)日： 1984-05-29
- 发明人: Friedrich Engelhardt , Hermann Schmitz , Walter Gulden , Jorg Hax
- 申请人： Friedrich Engelhardt , Hermann Schmitz , Walter Gulden , Jorg Hax
- 申请人地址： DEX Frankfurt am Main
- 专利权人： Cassella Aktiengesellschaft
- 当前专利权人： Cassella Aktiengesellschaft
- 当前专利权人地址： DEX Frankfurt am Main
- 优先权： DEX3027422 19800719
- 主分类号： C08F20/00
- IPC分类号： C08F20/00 ; C08F20/52 ; C08F26/00 ; C08F28/00 ; C08F220/56 ; C08F220/58 ; C08F226/02 ; C08F228/02 ; C09K8/588 ; C10G1/00 ; E21B43/22 ; C08F228/00
摘要：
Sand or rock masses containing mineral oil are deoiled with a deoiling agent containing an aqueous solution of a water-soluble copolymer which is a random distribution of 5 to 60% of weight of units of the formula ##STR1## 2 to 40% by weight of units of the formula ##STR2## and 38 to 93% by weight of units of the formula ##STR3## and partial hydrolysates thereof, wherein when R.sup.1 is hydrogen, R.sup.2 is hydrogen, methyl or ethyl, Y is --CO--NH--C(CH.sub.3).sub.2 --CH.sub.2 -- or a direct bond, and X.sup..sym. is a cation; when R.sup.1 and R.sup.2 are identical or different, each is hydrogen, methyl, ethyl or, together are trimethylene, Y is --CO--NH--C(CH.sub.3).sub.2 --CH.sub.2 -- and X.sup..sym. is cation.
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