Polymerization and copolymerization of trans-piperylene and isop

Details Polymerization and copolymerization of trans-piperylene and isop Polymerization and copolymerization of trans-piperylene and isop

1978-04-05

1979-04-10

Levin, Stanford M.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252431P, 260 336A, 526 77, 526308, 526335, 526337, C08F 450, C08F 452

Patent

active

041489837

ABSTRACT:
There is disclosed a method for the polymerization and copolymerization of diolefins selected from the group of monomers consisting of trans-1,3-pentadiene and isoprene employing as a catalyst a mixture of (A) an organometallic compound selected from the group consisting of aluminum trialkyls, magnesium dialkyls and zinc dialkyls, (B) a soluble chromium compound selected from the group consisting of chromium salts of organic acids containing from 2 to 20 carbon atoms, organic complex compounds of chromium containing tridentate ligands and .pi.-bonded organochromium compounds, and (C) a member selected from dialkyl hydrogen phosphites, diaryl hydrogen phosphites and tris(2-chloroethyl)phosphite.

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patent: 3429940 (1969-02-01), Wadsworth
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patent: 3804913 (1974-04-01), Goodwin
C.A. 82, 112312c (1975).
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Polym. Sci. USSR 9, 1802 (1968).
CA 80, 109590v (1974).
CA 80, 4644m (1974).
J. Polym. Sci., Chem. Ed. 11, Vasiliev et al., pp. 2489-2499 (1973).

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