Film excellent in slip characteristics and its production

Details Film excellent in slip characteristics and its production Film excellent in slip characteristics and its production

1974-06-27

1976-07-06

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 40R, C08L 6700

Patent

active

039681831

ABSTRACT:
A polyester block copolymer film excellent in slip characteristics and blocking resistance, which is prepared by melt extruding a polyester block copolymer in a film and cooling the film in a melt state at a temperature of about 40.degree. to 120.degree.C to solidify it, the polyester block copolymer comprising crystalline polyester segments and non-crystalline polymer segments in a weight ratio of 99 : 1 to 10 : 90 and having a number average molecular weight of about 10,000 to 100,000, the melting point of a self-supporting high polymer substantially constituted with the monomer components of the said crystalline polyester segments alone being not lower than about 200.degree.C and the melting point or softening point of a polymer substantially constituted with the said non-crystalline polymer segments themselves being not higher than about 80.degree.C.

REFERENCES:
patent: 2823421 (1958-02-01), Scarlett
patent: 3223757 (1965-12-01), Owens et al.
patent: 3446778 (1969-05-01), Waller et al.
patent: 3627625 (1971-12-01), Jarrett

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