Patent ID: 6046274
Filing Date: 2000-04-04
Classification: A61L,C08G,C08L,Y10T

Abstract:
A flexible composition comprising a vinyl chloride polymer and a block copolymer, said vinyl chloride polymer being a plasticized vinyl chloride polymer comprising at least 20 parts of plasticizer per 100 parts by weight of vinyl chloride polymer, and said plasticizer is different from said block copolymer, and the concentration of the block copolymer is between 0.5 and 10.0 parts per 100 parts by weight of a plasticized vinyl chloride polymer; and the block copolymer is a diblock copolymer comprising a polyethylene oxide block and a block of a poly-.epsilon.-caprolactone, and the average molecular mass of the block of poly-.epsilon.-caprolactone and the average molecular mass of the polyethylene oxide block each at least equal 3000 g/mol, and the block of poly-.epsilon.-caprolactone has an average molecular mass which is greater than or equal to the average molecular mass of the polyethylene oxide block.