Compositions with a grafted polyolefin copolymer having constituents of an unsaturated monomer, an olefin elastomer, and a long-chain branched polyolefin
AssigneeEquistar Chemicals, LP
InventorMaged G. Botros
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Abstract
The present disclosure provides a polyolefin-based composition, suitable for use as a tie-layer adhesive composition, and a process for making the polyolefin-based composition. The polyolefin-based composition is made from and/or contains a grafted polyolefin copolymer composition, a base resin composition, and optionally, an additives composition. The grafted polyolefin copolymer composition is made from and/or contains a grafted polyolefin composition, an olefin elastomer composition, and a long-chain branched polyolefin composition. The grafted polyolefin is coupled to the olefin elastomer and the long-chain branched polyolefin.
Claims6
A process for producing a composition comprising the steps of:
- a. reacting an unsaturated monomer with a polyolefin composition to produce at least one live, wherein the reacting step a. excludes an olefin elastomer;
- b. coupling the olefin elastomer to the at least one live, grafted polyolefin in the presence of an inert gas to form a first couplet;
- c. subsequently coupling a long-chain branched polyolefin to the first couplet in the presence of an inert gas to form a second couplet, wherein the grafted polyolefin of the first couplet comprises a live, grafted polyolefin during the coupling of the second couplet;
- wherein the second couplet comprises about 0.2% to about 60% by weight of the olefin elastomer and about 1.5% to about 50% by weight of the long-chain branched polyolefin.
Dependencies are inferred from the claim text.