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US 2004/0176538 A1Published application
Erucamide-free closure and liner compositions
AssigneeW. R. Grace & Co.-Conn.
InventorMarysusan Couturier
Life of this patent
Estimating the term…
Abstract
An exemplary erucamide-free composition for making container closures or closure sealants includes a matrix polymer, a silicone lubricant such as poly(dimethyl) siloxane, and a slip aid comprising a saturated amide, oxidized polyethylene, or combination thereof.
Claims21
A composition, comprising:
- (A) a matrix polymer, copolymer, or blend thereof, which is essentially free of erucamide and which is essentially free of unsaturated amide;
- (B) a silicone lubricant having an average molecular weight not less than 40,000 and said silicone lubricant being present in an amount not less than 0.01 parts and not greater than 10 parts based on 100 parts of said base polymer(s);
- and
- (C) a slip aid comprising a saturated amide, an oxidized polyethylene, or mixture thereof, said slip aid being in an amount not less than 0.01 parts and not greater than 8 parts based on 100 parts of said component (A).
1 more element
The composition of claim 3 wherein said matrix polymer further comprises ethylene, propylene, or blend thereof.
A slip aid composition for use in container closures and closure sealants, comprising:
- a silicone lubricant having an average molecular weight not less than 40,000, said silcone being present in an amount not less than 0.01 parts and not greater than 10 parts based on 100 parts of said base polymer(s) ;
- and
- a slip aid comprising a saturated amide, an oxidized polyethylene, or mixture thereof, said slip aid being in an amount not less than 0.01 parts and not greater than 8 parts based on 100 parts of said base polymer(s).
Dependencies are inferred from the claim text.