C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/43, 134/56
C08G 65/32 (2006.01) C08G 8/36 (2006.01) C08G 65/34 (2006.01) C08G 81/00 (2006.01) C10G 33/04 (2006.01)
Patent
CA 1282897
Abstract of the Disclosure: Polyethers with are suitable as oil demulsifiers are obtainable by reacting A) a polyalkylene oxide obtained from ethylene oxide and propylene oxide and containing in total from 5 to 200 alkylene oxide units with B) an alkylolation product of a low molecular weight alde- hyde and a bis-(4-hydroxyphenyl)-methane of the general formula II Image where R1 and R2 may be identical or different and are each hydrogen, low molecular weight alkyl, phenyl, carboxyl or low molecular weight alkoxycarbonyl, the molar reaction ratio of the compound of the formula II to the alkylolat- ing aldehyde being from 1:1 to 1:4, at from 100 to 180°C in the presence of an acidic cata- lyst with removal of the water of reaction, the weight ratio of A to B being from 5:1 to 1:3.
535872
Barthold Klaus
Baur Richard
Lasowski Juergen
Oppenlaender Knut
Barthold Klaus
Basf Aktiengesellschaft
Baur Richard
Lasowski Juergen
Oppenlaender Knut
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