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US 6,602,609 B1Granted
Multilayer polymeric film with non-migratory antiblock agent
AssigneeExxonMobil Oil Corporation
InventorDan-Cheng Kong
Life of this patent
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Abstract
A multilayer polymeric film comprises: (a) a core layer comprising a thermoplastic polymer; and (b) at least one skin layer comprising a thermoplastic polymer and a non-migratory polydimethylsiloxane block copolymer.
Claims20
A multilayer polymeric packaging film, for use in automatic packaging equipment, comprising:
- (a) a core layer comprising a thermoplastic polymer;
- and
- (b) at least one skin layer comprising a thermoplastic polymer and a non-migratory polydimethylsiloxane block copolymer,
- wherein said non-migratory polydimethylsiloxane block copolymer is selected from the group consisting of a di-block copolymer, a tri-block copolymer and a star-block copolymer, and said non-migratory polydimethylsiloxane block copolymer has at least a polyldimethylsiloxane block and a block which is not compatible with said thermoplastic polymer in said skin layer.
1 more element
A multilayer polymeric film comprising:
- (a) a core layer comprising a thermoplastic polymer;
- and
- (b) at least one skin layer comprising a thermoplastic polymer and a non-migratory polydimethylsiloxane block copolymer, wherein said non-migratory polydimethylsiloxane block copolymer is selected from the group consisting of dimethylsiloxane-alkylene ether block copolymer;
- dimethylsiloxane-arylene ether block copolymer;
- dimethylsiloxane-vinyl block copolymer;
- dimethylsiloxane-ester block copolymer;
- aryl-alkyl phthalates dimethylsiloxane block copolymer;
- polycaprolactam dimethylsiloxane block copolymer;
- polyurethane dimethylsiloxane block copolymer;
- and blends thereof.
7 more elements
A multilayer polymeric film comprising:
- (a) a core layer comprising a thermoplastic polymer;
- and
- (b) at least one skin layer comprising a thermoplastic polymer and a non-migratory polydimethylsiloxane block copolymer, wherein said non-migratory polydimethylsiloxane block copolymer is selected from the group consisting of bisphenol A carbonate-dimethylsiloxane block copolymer;
- 9,9-bis(4-hydroxy-henyl)fluorene carbonate dimethylsiloxane block copolymer;
- tetrabromobisphenol A carbonate dimethylsiloxane block copolymer;
- 2,2,4,4-tetramethyl-1,3-cyclobutylene carbonate dimethylsiloxane block copolymer;
- bisphenol A isophthalate dimethylsiloxane block copolymer;
- bisphenol A terephthalate dimethylsiloxane block copolymer;
- hexamethylene terephthalate dimethylsiloxane block copolymer;
- and blends thereof.
7 more elements
Dependencies are inferred from the claim text.