Unsaturated propylene/.alpha., .omega.-diene copolymers
AssigneeExxon Chemical Patent Inc.
InventorsBradley P. Etherton, James J. McAlpin, Terrence Huff, Edward N. Kresge
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Abstract
Disclosed are unsaturated .alpha.-olefin/.alpha.,.omega.-diene copolymers, and a method of preparation thereof. The copolymers are generally crystalline, free of gel and cross-links, and contain unsaturated side chains and long chain branching. The copolymers contain up to 5 mole percent diene incorporated therein, and may be prepared by copolymerization using a solid-phase, insoluble coordination catalyst, without a solvent, and below the crystalline melting point of the copolymer.
Claims24
A propylene/.alpha.,.omega.-diene copolymer, comprising:
- propylene interpolymerized with from 0.01 to 5 mole percent of an .alpha.,.omega.-diene having from 7 to about 30 carbon atoms, to produce an unsaturated crystalline copolymer essentially free of gel, and wherein said copolymer has greater than about 80 weight percent heptane insolubles.
An unsaturated propylene/.alpha.,.omega.-diene copolymer, comprising:
- propylene interpolymerized with from 0.01 to 5 mole percent of an .alpha.,.omega.-diene having from 8 to 12 carbon atoms, wherein the copolymer contains unsaturated side chains, and is essentially free of gel and wherein said copolymer has greater than about 80 weight percent heptane insolubles.
A propylene/decadiene copolymer, comprising:
- propylene copolymerized with from 0.01 to 5 mole percent 1,9-decadiene, wherein the copolymer has less than 0.1 weight percent of xylene-insolubles, at least 80 weight percent heptane insolubles, and a branching index of about 0.2 to about 0.9, and wherein said propylene copolymer has from about 0.001 to about 2 mole percent unsaturated side chains.
A propylene copolymer comprising:
- propylene copolymerized with 1,9-decadiene, wherein said 1,9-decadiene is present in said copolymer in the range of from about 0.1 to about 1 mole percent, wherein said propylene copolymer has:
- i) less than 0.1 weight percent xylene-insoluble fractions;
- ii) a branching index in the range of from about 0.6 to about 0.8;
- iii) in the range of from about 0.1 to about 1 mole percent unsaturated side chains;
- and
- iv) greater than about 80 weight percent heptane insolubles.
Dependencies are inferred from the claim text.