Terpolymers based on .alpha.,.beta.-unsaturated dicarboxylic...

C - Chemistry – Metallurgy – 08 – F

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C08F 222/04 (2006.01) C08F 8/32 (2006.01) C08F 210/14 (2006.01) C08F 216/12 (2006.01) C08F 222/00 (2006.01) C08L 23/08 (2006.01) C08L 23/18 (2006.01) C08L 29/10 (2006.01) C08L 31/02 (2006.01) C08L 35/00 (2006.01) C10L 1/14 (2006.01) C10L 1/196 (2006.01) C10L 1/197 (2006.01) C10L 1/198 (2006.01) C10L 1/236 (2006.01) C10M 145/16 (2006.01) C10M 149/06 (2006.01) C10M 157/00 (2006.01) C10M 157/04 (2006.01) F17D 1/17 (2006.01) C10L 1/18 (2006.01) C10L 1/22 (2006.01)

Patent

CA 2112855

Terpolymers based on .alpha., .beta.-unsaturated dicarboxylic an- hydrides, .alpha., .beta.-unsaturated compounds and polyoxyalkylene ethers of lower unsaturated alcohols. The present invention relates to terpolymers based on .alpha., .beta.-unsaturated dicarboxylic anhydrides, .alpha., .beta.- unsaturated compounds and polyoxyalkylene ethers as defined in claim 1, and also a process for preparing the same as defined in claim 5. The invention likewise relates to a mixture of at least one terpolymer as defined in claim 1 and at least one ethylene-vinyl ester copolymer. The terpolymers of the invention, and mixtures thereof, are used as paraffin inhibitors in crude oils and petroleum products.

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