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US 5,395,881 AGranted
Flexible polar thermoplastic polyolefin compositions
AssigneeE. I. Du Pont de Nemours and Company
InventorHeinz H. Spelthann
Life of this patent
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Abstract
Polar thermoplastic polyolefin blends are provided which are flexible and are particularly useful in replacing polyvinyl chloride sheeting used as liners, folders, etc.. The blends comprise, in general, a non-polar thermoplastic polyolefin, a polar ethylene copolymer, an epoxy functionalized polar ethylene copolymer, and a carboxylic acid or anhydride functionalized olefin polymer, all of which are chlorine-free.
Claims13
A flexible, nonhalogen-containing polymer composition which comprises a blend of:
- (1) 10%-90% by weight of a thermoplastic polymer component comprising:
- (a) 90-99.9% by weight of a non-polar thermoplastic polyolefin;
- and
- (b) 0.1-10% by weight of a compatibilizing polymer which is an olefin polymer containing less than 20% by weight of a copolymerized polar monomer, and containing 0.01-10% by weight of a carboxylic acid or a derivative thereof;
- and
- (2) 90%-10% by weight of a polar thermoplastic polymer component comprising:
- (a) 70-99.9% by weight of a polar ethylene copolymer consisting essentially of
- (i) 30-80% by weight of ethylene;
- (ii) 5-60% by weight of at least one copolymerizable, ethylenically unsaturated organic compound;
- and
- (iii) 3-30% by weight of carbon monoxide;
- and
- (b) 0.1-30% by weight of a polar ethylene compatibilizing copolymer consisting essentially of:
- (i) 30-80% by weight of ethylene;
- (ii) 0-60% by weight of at least one copolymerizable, ethylenically unsaturated organic compound;
- and
- (iii) 0.5-30% by weight of glycidyl acrylate or methacrylate.
14 more elements
Dependencies are inferred from the claim text.