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US 8,785,554 B2Granted
Crystalline block composites as compatibilizers
AssigneeDow Global Technologies LLC
InventorsColin Li Pi Shan, Kim L. Walton, Gary R. Marchand, Edmund M. Carnahan, Eddy I. Garcia-Meitin, Thomas Karjala
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Abstract
Embodiments of the invention provide crystalline block composites and their use as compatibilizers. The crystalline block composites comprise i) a crystalline ethylene based polymer; ii) a crystalline alpha-olefin based polymer and iii) a block copolymer comprising a crystalline ethylene block and a crystalline alpha-olefin block.
Claims5
A composition comprising:
- A) a first crystalline alpha-olefin based polymer wherein the polymer is polypropylene;
- B) a first crystalline ethylene based polymer wherein the polymer is polyethylene;
- and,
- C) at least one crystalline block composite having a Crystalline Block Composite Index of 0.1 to 0.9 comprising:
- i) a second crystalline ethylene based polymer;
- ii) a second crystalline alpha-olefin based polymer wherein the polymer is polypropylene and
- iii) a block copolymer comprising a crystalline ethylene block and a crystalline alpha-olefin block wherein the crystalline ethylene block of the block copolymer is the same composition as the crystalline ethylene based polymer in the block composite and the crystalline alpha-olefin block of the block copolymer is the same composition as the crystalline alpha-olefin based polymer of the block composite
- wherein component C) is present in an amount of from 0.5 wt % to 15 wt % based on total weight of the composition.
5 more elements
Dependencies are inferred from the claim text.