Polymeric films and method of making same
AssigneeExxonMobil Oil Corporation
InventorsKwangjin Song, Pang-Chia Lu
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Abstract
Provided are polymeric films that include a polyolefin and at least one cavitating agent including a poly(alkylene terephthalate) of formula (I); wherein n, representing the number of methylene segments in the repeating unit, is 3 or an integer greater than or equal to 5; p, representing the degree of polymerization, is an integer greater than 1. The polymeric film may be an opaque polymeric film. A preferred cavitating agent is poly(trimethylene terephthalate). Also provided are methods for making such polymeric films.
Claims13
A polymeric film comprising at least one layer, said layer comprising a polyolefin and at least one cavitating agent comprising a poly(alkylene terephthalate) of formula (I):
- wherein n is 3, p is an integer greater than 1, and the poly(alkylene terephthalate) has an intrinsic viscosity of less than or equal to 0.9 dl/g;
- wherein the cavitating agent further comprises at least one poly(alkylene terephthalate) of formula (I) wherein n is an integer in the range of 5 to 20.
A polymeric film comprising at least one layer, said layer comprising a polyolefin and at least one cavitating agent comprising a poly(alkylene terephthalate) of formula (I):
- wherein n is 3, p is an integer greater than 1, and the poly(alkylene terephthalate) has an intrinsic viscosity of less than or equal to 0.9 dl/g;
- wherein said layer comprises a polar modified polyolefin selected from at least one of acid or anhydride modified polyolefin, acid or anhydride modified polyolefin copolymers, glycidyl methacrylate modified polyolefin, glycidyl methacrylate modified polyolefin copolymer, ethylene acrylate copolymer, anhydride modified ethylene acrylate copolymer, acid terpolymers containing ester and/or acrylic functionalities, random terpolymer of ethylene, acrylic ester and glycidyl methacrylate, or blends thereof.
Dependencies are inferred from the claim text.