Olefinic copolymer compositions

Details Olefinic copolymer compositions Olefinic copolymer compositions

1975-01-28

1976-02-10

Schofer, Joseph L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 8078, 260888, C08L 900, C08L 2300, C08F21000, C08F21200

Patent

active

039377636

ABSTRACT:
A composition comprising 90 to 20 % by might of at least one diene rubber or butyl rubber and 10 to 80 % by weight of halogen-containing, sulfur-curable, normally amorphous quadripolymer produced by contacting a mixture of (1) ethylene, (2) an .alpha.-olefin having the formula, R--CH=CH.sub.2 , wherein R is a hydrocarbon radical having 1 to 20 carbon atoms, (3) a hydrocarbon compound having a plurality of non-conjugated unsaturated bonds capable of polymerizing with a coordinated catalyst, and (4) a halogenated norbornene compound represented by the formula, ##SPC1##
Wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are hydrogen atoms, hydrocarbon radicals having 1 to 20 carbon atoms, halogen atoms, or halogenated hydrocarbon radicals having 1 to 20 carbon atoms and containing at least one halogen atom as substituent, provided that R.sub.1, R.sub.2, R.sub.3 and R.sub.4 have as a whole at least one halogen atom, with a coordinated catalyst comprising an organoaluminum compound of the formula, AlR'.sub.n X.sub.3.sub.-n, wherein R' is a hydrocarbon radical having 1 to 20 carbon atoms, X is a halogen atom, and n is any number of from 1.5 to 3, and a transition metal compound selected from the group consisting of vanadium compounds and titanium compounds, the molar ratio of said organoaluminum compound to said transition metal compound being from 5 : 1 to 0.5 : 1. The rate of vulcanization of the said quadripolymer is freely controllable by varying the non-conjugated diene content thereof.

REFERENCES:
patent: 3222330 (1965-12-01), Nyce et al.
patent: 3705138 (1972-12-01), VAN DEN Berg
patent: 3876595 (1975-04-01), Ogura et al.

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