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US 6,673,870 B2Granted
Compositions of polyolefins and hyperbranched polymers with improved tensile properties
AssigneeThe Procter & Gamble Company
InventorsBlair Alex Owens, Nancy Eckert Jackson, Dimitris Ioannis Collias
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Abstract
A composition of polyolefin, ester additive, and hyperbranched polymer with improved tensile energy-to-break value compared to polyolefins wihtout the hyperbranched polymer. The concentration of the hyperbranched polymers can be between about 0.1% and about 10% by weight of the polyolefins. The polyolefins have a melt flow index of about 14 g/10 min or greater.
Claims20
A composition comprising a mixture of:
- a) a polyolefin polymer having a melt flow index of about 14 g/10 min or greater;
- b) from about 0.1% to about 10%, by weight of the polyolefin polymer, of a hyperbranched polymer, said hyperbranched polymer not being covalently bonded to said polyolefin polymer;
- and
- c) from about 0.01% to about 10%, by weight of the polyolefin polymer, of an ester additive;
- wherein said mixture has a tensile energy-to-break value of at least about 15% greater than the tensile energy-to-break value of said polyolefin polymer.
2 more elements
A composition comprising a mixture of:
- a) a polyolefin polymer having a melt flow index of about 14 g/10 min or greater;
- and
- b) from about 0.1% to about 10%, by weight of the polyolefin polymer, of a hyperbranched polymer, said hyperbranched polymer not being covalently bonded to said polyolefin polymer;
- wherein said mixture has a tensile energy-to-break value of at least about 15% greater than the tensile energy-to-break value of said polyolefin polymer.
1 more element
A method for making a polymer composition comprising the steps of:
- a) providing a mixture of:
- i) a polyolefin polymer having a melt flow index of about 14 g/10 min or greater;
- ii) from about 0.1% to about 10%, by weight of the polyolefin polymer, of a hyperbranched polymer;
- and
- iii) from about 0.01% to about 10%, by weight of the polyolefin polymer, of an ester additive;
- and
- b) processing said mixture to form a polymer product;
- wherein said hyperbranched polymer is not covalently bonded to said polyolefin polymer said mixture has a tensile energy-to-break value of at least about 15% greater than the tensile energy-to-break value of said polyolefin polymer.
5 more elements
Dependencies are inferred from the claim text.