Hyperbranched polymers for use as demulsifiers for cracking...

C - Chemistry – Metallurgy – 10 – G

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C10G 33/04 (2006.01) B01D 17/04 (2006.01) C08G 63/20 (2006.01) C08G 63/91 (2006.01) C08G 64/02 (2006.01) C08G 64/42 (2006.01) C08G 83/00 (2006.01)

Patent

CA 2596821

The invention relates to the use of non-dendrimeric, highly functional, hyperbranched polymers as demulsifiers for cracking crude oil emulsions. The hyperbranched polymers are preferably hyperbranched polycarbonates, hyperbranched polyesters, hyperbranched polyethers, hyperbranched polyurethanes, hyperbranched polyurea polyurethanes, hyperbranched polyureas, hyperbranched polyamides, hyperbranched polyether amines and hyperbranched polyester amides that comprise functional groups, selected from the group including -OC(O)OR, -COOH, -COOR, -CONHR, -CONH2, -OH, -SH, -NH2, -NHR, -NR2, - SO3H, -SO3R, -NHCOOR, -NHCONH2 and -NHCONHR, wherein R represents an optionally substituted alkyl or aryl group.

L'invention concerne l'utilisation de polymères non dendrimères, hautement fonctionnels et hautement ramifiés, comme désémulsifiants, pour séparer des émulsions d'huile brute. Les polymères hautement ramifiés sont de préférence des polycarbonates hyperramifiés, des polyesters hyperramifiés, des polyéthers hyperramifiés, des polyuréthanes hyperramifiés, des polyuréthanes de polyurée hyperramifiés, des polyurées hyperramifiées, des polyamides hyperramifiés, des polyétheramines hyperramifiées et des polyesteramides hyperramifiés, qui comportent des groupes fonctionnels, sélectionnés dans le groupe comprenant: -OC(O)OR, -COOH, -COOR, -CONHR, -CONH2, -OH, -SH, NH2, -NHR, -NR2, -SO3H, -SO3R, -NHCOOR, -NHCONH2 et NHCONHR, R désignant un reste alkyle ou aryle éventuellement substitué.

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