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

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

1994-01-06

1995-02-21

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253277, 525384, 525379, 525382, 526271, C08F 832

Patent

active

053916328

ABSTRACT:
Terpolymers based on .alpha.,.beta.-unsaturated dicarboxylic anhydrides, .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.

REFERENCES:
patent: 4511369 (1985-04-01), Denis et al.
patent: 4670516 (1987-06-01), Sackmann et al.
patent: 4758365 (1988-07-01), Neunier et al.
patent: 4900332 (1990-02-01), Denis et al.
patent: 5142036 (1992-08-01), Akimoto et al.

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