Preparation of terpolymers

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

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526 68, C08F22206

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active

042823420

ABSTRACT:
Terpolymers which have Fikentscher K-values of from 8 to 100 and comprise 50 mole percent of maleic anhydride units, from 35 to 45 mole percent of 2,4,4'-trimethylpent-1-ene units and from 5 to 15 mole percent of 2,4,4'-trimethylpent-2-ene units, and processes for their preparation by polymerizing 50 parts by weight of maleic anhydride, from 35 to 180 parts by weight of 2,4,4'-trimethylpent-1-ene and from 0.6 to 6 parts by weight of 2,4,4'-trimethylpent-2-ene per part by weight of 2,4,4'-trimethylpent-1-ene employed, in the presence of a free-radical initiator at from 60.degree. to 200.degree. C. and a pressure of from 1 to 20 bar, and separating the terpolymers from the unconverted monomers.

REFERENCES:
patent: Re28475 (1975-07-01), Blecke et al.
patent: 2378629 (1945-06-01), Hanford
patent: 2430313 (1947-11-01), Vana
patent: 3336267 (1967-08-01), Zimmerman et al.
patent: 3341622 (1967-09-01), Leibson et al.
patent: 4048422 (1977-09-01), Sackmann et al.
Die Angewandte Makromolekulare Chemie, 69, 1978, pp. 141-156.

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