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US 12,503,529 B2Granted
Polymers of 4-substituted hexadiene and processes for production thereof
AssigneeExxonMobil Chemical Patents Inc.
InventorsAlex E. Carpenter, Tzu-Pin Lin, Brian J. Rohde, Sarah J. Mattler, Nikola S. Lambic, Hsu Chiang, Peijun Jiang, Irene C. Cai, Gursu Culcu, Jarod M. Younker
Life of this patent
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Abstract
This invention relates to polymers comprising: one or more that include 1) at least 11 wt % 4 substituted 1,4 hexadiene and less than 20 wt % 5-methyl-1,4-hexadiene, based upon the weight of the polymer, and 2) optionally, one or more olefins; and processes to produces such polymers using metallocene or post-metallocene catalyst compounds.
Claims16
A polymer comprising:
- 1) one or more dienes that include at least 11 wt % 4-substituted 1,4 hexadiene and less than 1 wt % 5-methyl-1,4-hexadiene based upon a weight of the polymer, and 2) one or more olefins comprising ethylene, ethylene and propylene, or ethylene, propylene and styrene, and the polymer has a glass transition temperature of −40° C. or less.
A polymer comprising:
- 1) one or more dienes that include 11-30 wt % 4-substituted 1,4 hexadiene and less than 20 wt % 5-methyl-1,4-hexadiene based upon the weight of the polymer, and 2) one or more olefins, wherein propylene is not included in the polymer unless there are at least two olefins in the polymer and the polymer is a terpolymer of ethylene, propylene, and 4-substituted 1,4 hexadiene, the polymer has a Mw of 70,000 g/mol or more, the polymer has a Mooney (ML 1+4, 125° C.) value greater than 20 MU, the polymer has a glass transition temperature of −40° C. or less.
A polymer comprising:
- 1) one or more dienes that include 0.1 to 10 wt % 4-substituted 1,4 hexadiene and less than 0.5 wt % 5-methyl-1,4-hexadiene based upon a weight of the polymer, and 2) one or more olefins that at least includes propylene.
A process to produce polymer comprising:
- contacting 1) diene comprising 4-substituted 1,4 hexadiene and 1 wt % or less of 5-methyl-1,4-hexadiene, and 2) one or more olefins, with 3) a catalyst system comprising single site coordination polymerization catalyst and activator and the contacting includes using propylene as the one or more olefins, and the contacting is performed in solution, gas phase, slurry, or bulk-slurry, and wherein the polymer is a copolymer of the propylene and the 4-substituted 1,4 hexadiene, the copolymer has an isotactic propylene backbone, the copolymer has a melting point ranging from 80° C. to 155° C., the isotactic propylene backbone has a meso pentad ranging from 0.650 to 0.985 as measured by 13C NMR spectroscopy, and the polymer includes 0.1-10 wt % of the 4-substituted 1,4 hexadiene based upon weight of the polymer.
Dependencies are inferred from the claim text.