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US 6,780,936 B1Granted
Diene-modified propylene polymer nucleating agents
AssigneeExxonMobil Chemical Patents Inc.
InventorsPawan K. Agarwal, Armenag Dekmezian, Aspy K. Mehta, Weiqing Weng
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Abstract
This invention relates to compositions derived from polyolefins combined with a polymeric nucleating agent. The nucleating agent is specifically a diene-propylene copolymer.
Claims55
A polymer composition comprising a blend of:
- a) from 0.01 to 30 weight percent diene-propylene copolymer based on the total polymer composition;
- and
- b) crystallizable polyolefin comprising from a minimum of 0 to less than 100 percent by weight propylene derived units.
A polymer composition comprising a blend of:
- a) from 0.01 to 10 weight percent diene-propylene copolymer based on the total polymer composition weight;
- and
- b) crystallizable polyolefin comprising at least 5% by weight ethylene derived units.
A polymer composition obtained by blending:
- a) from 0.01 to 30 weight percent diene-propylene copolymer based on the total polymer composition weight;
- and
- b) at least 50 weight percent crystallizable polyolefin comprising at least 5% by weight ethylene derived units;
- wherein the polymer composition has a Tc at least 3° C. greater than that of the crystallizable polyolefin alone.
1 more element
Dependencies are inferred from the claim text.