发明授权
US4745175A Condensation products of thioalkylene oxides of polythio-alkylene oxides
with polyalkylene oxides, their preparation and their use as breakers
for water-in-oil emulsions
失效
聚硫化烯氧化物的硫代环氧烷与聚环氧烷的缩合产物，它们的制备及其作为油包水乳液的破乳剂的用途
- 专利标题： Condensation products of thioalkylene oxides of polythio-alkylene oxides with polyalkylene oxides, their preparation and their use as breakers for water-in-oil emulsions
- 专利标题（中）： 聚硫化烯氧化物的硫代环氧烷与聚环氧烷的缩合产物，它们的制备及其作为油包水乳液的破乳剂的用途
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申请号： US821568申请日： 1986-01-22
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公开(公告)号： US4745175A公开(公告)日： 1988-05-17
- 发明人: Thomas Scholl , Wolfgang Oberkirch , Hermann Perrey
- 申请人： Thomas Scholl , Wolfgang Oberkirch , Hermann Perrey
- 申请人地址： DEX Leverkusen
- 专利权人： Bayer Aktiengesellschaft
- 当前专利权人： Bayer Aktiengesellschaft
- 当前专利权人地址： DEX Leverkusen
- 优先权： DEX3504645 19850212
- 主分类号： C08G65/34
- IPC分类号： C08G65/34 ; C08G81/00 ; C10G33/04 ; C10M105/08
摘要：
New sulphur-containing polyethers based on optionally polymeric thioalkylene oxides and polyalkylene oxides, method for their preparation and their use as breakers for water-in-oil emulsions, in particular, as breakers for crude oil emulsions. The polyethers are of the formula ##STR1## in which R.sub.1 and R.sub.2, independently of each other, represent hydrogen and/or a straight-chain or branched C.sub.1 to C.sub.20 alkyl group,R.sub.3 and R.sub.4, independently of each other and independently of adjacent ##STR2## groups, represent in each case hydrogen, a straight-chain or branched C.sub.1 to C.sub.20 alkyl group and/or for --A--O--B, whereA denotes a straight-chain or branched C.sub.1 to C.sub.20 alkylene group andB denotes a straight-chain or branched C.sub.1 to C.sub.20 alkylene-OH group or a ##STR3## group with R.sub.1 and R.sub.2 as defined above, n represents an integer from 1 to 100 andm represents an integer from 10 to 2,500.
公开/授权文献
- US5897499A Ultrasonic diagnostic apparatus for cursor control 公开/授权日：1999-04-27
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