Use of thermoplastic composition comprising polyether-block copolyamides as additive

Abstract

The present invention discloses the use in rotomolding or slush molding applications of a composition comprising a polyolefin, a processing aid and optionally a UV-stabilizer.

1 - 7 . (canceled) 
     
     
         8 . An article prepared from a composition comprising:
 a polyolefin; and   from 0.001% by weight to 1% by weight of a densification aid comprising a polyether-block copolyamide.   
     
     
         9 . The article of  claim 8 , wherein the article is a slush molded article. 
     
     
         10 . The article of  claim 8 , wherein the article is a rotomolded article. 
     
     
         11 . The article of  claim 8 , wherein the composition further comprises from 0.025% by weight to 0.500% by weight of one or more UV-stabilizers. 
     
     
         12 . The article of  claim 8 , wherein the densification aid comprises the polyether-block copolyamide as a major component and further comprises a minor component selected from a group consisting of thermoplastic polyurethane, polyetherester, polyethylene glycol, and fluoropolymer. 
     
     
         13 . The article of  claim 8 , wherein the polyolefin is a homopolymer of ethylene or a copolymer of ethylene. 
     
     
         14 . The article of  claim 8 , wherein the polyolefin is a homopolymer of propylene or a copolymer of propylene. 
     
     
         15 . The article of  claim 8 , wherein the composition further comprises a polymer selected from a group consisting of a polyamide, a copolyamide, a second polyolefin that is different than the polyolefin, a copolymer of ethylene and vinyl acetate, a copolymer of ethylene and vinyl alcohol, a polystyrene, a polycarbonate, and a polyvinyl chloride. 
     
     
         16 . The article of  claim 8 , wherein the polyether-block copolyamide has a polyether content within ranging from 10 to 70 weight percent. 
     
     
         17 . A slush molded or rotomolded article prepared from a composition comprising:
 a polyolefin;   from 0.001% by weight to 1% by weight of a densification aid comprising a polyether-block copolyamide; and   from 0.025% by weight to 0.500% by weight of one or more UV-stabilizers.   
     
     
         18 . A slush molded or rotomolded article prepared from a composition consisting essentially of:
 from 99 to 99.999% by weight of:
 a polyolefin, or a polyolefin composition comprising from 50 to 99% by weight of a first polyolefin and from 1 to 50% by weight of a polymer selected from a group consisting of a polyamide, a copolyamide, a second polyolefin that is different than the first polyolefin, a copolymer of ethylene and vinyl acetate, a copolymer of ethylene and vinyl alcohol, a polystyrene, a polycarbonate, and a polyvinyl chloride; 
   from 0.001% by weight to 1% by weight of a densification aid comprising a polyether-block copolyamide; and   from 0.025% by weight to 0.500% by weight of one or more UV-stabilizers.