Filled and plasticized blends of linear low density polyethylene
AssigneeE. I. Du Pont de Nemours and Company
InventorTimothy T. Schenck
Life of this patent
Estimating the term…
Abstract
Filled thermoplastic compositions useful, e.g., as sound-deadening sheeting for automotive carpet are obtained by blending about 5-55% by weight of ethylene/.alpha.-olefin copolymer, the .alpha.-olefin containing from 4 to 10 carbon atoms; about 2-12% by weight of plasticizer selected from the group consisting of processing oils, epoxidized oils, polyesters, polyethers and polyether esters; about 40-90% by weight of filler; and optionally elastomeric polymers.
Claims76
A composition consisting essentially of (a) from about 5 to about 55% by weight of at least one copolymer of ethylene with at least one .alpha.-olefin comonomer said comonomer containing from 4 to 10 carbon atoms, the ethylene content of said copolymer being from about 75 to about 98% by weight, the comonomer content of said copolymer being from about 2 to about 25% by weight, and the melt index of said copolymer being from about 0.1 to about 150;
- (b) from about 2 to about 12% by weight of at least one plasticizer selected from the group consisting of processing oils, epoxidized oils, polyesters, polyethers and polyether esters;
- and (c) from about 40 to about 90% by weight of filler.
A sound deadening sheet prepared from a composition consisting essentially of (a) from about 5 to about 55% by weight of at least one copolymer of ethylene with at least one .alpha.-olefin comonomer said comonomer containing from 4 to 10 carbon atoms, the ethylene content of said copolymer being from about 75 to about 98% by weight, the comonomer content of said copolymer being from about 2 to about 25% by weight, and the melt index of said copolymer being from about 0.1 to about 150;
- (b) from about 2 to about 12% by weight of at least one plasticizer selected from the group consisting of processing oils, epoxidized oils, polyesters, polyethers and polyether esters;
- (c) from about 40 to about 90% by weight of filler;
- and (d) from 0 to about 27% by weight of elastomeric polymer.
A carpet having a backside coating prepared from a composition consisting essentially of (a) from about 5 to about 55% by weight of at least one copolymer of ethylene with at least one .alpha.-olefin comonomer said comonomer containing from 4 to 10 carbon atoms, the ethylene content of said copolymer being from about 75 to about 98% by weight, the comonomer content of said copolymer being from about 2 to about 25% by weight, and the melt index of said copolymer being from about 0.1 to about 150;
- (b) from about 2 to about 12% by weight of at least one plasticizer selected from the group consisting of processing oils, epoxidized oils, polyesters, polyethers and polyether esters;
- (c) from about 40 to about 90% by weight of filler;
- and (d) from 0 to about 27% by weight of elastomeric polymer.
An automotive carpet having a backside coating prepared from a composition consisting essentially of (a) from about 5 to about 55% by weight of at least one copolymer of ethylene with at least one .alpha.-olefin comonomer said comononer containing from 4 to 10 carbon atoms, the ethylene content of said copolymer being from about 75 to 98% by weight, the comonomer content of said copolymer being from about 2 to about 25% by weight, and the melt index of said copolymer being from about 0.1 to about 150;
- (b) from about 2 to about 12% by weight of at least one plasticizer selected from the group consisting of processing oils, epoxidized oils, polyesters, polyethers and polyether esters;
- (c) from about 40 to about 90% by weight of filler;
- and (d) from 0 to about 27% by weight of elastomeric polymer.
Dependencies are inferred from the claim text.