Polypropylene resin composition

Details Polypropylene resin composition Polypropylene resin composition

1996-05-22

1999-09-21

Mulcahy, Peter D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524232, 524310, 524317, 524318, 524394, 524398, 524399, 524400, C08J 500

Patent

active

059555246

ABSTRACT:
A polypropylene resin composition is herein disclosed which is obtainable by blending (A) 100 parts by weight of a polypropylene resin comprising (a) 100 to 20% by weight of a homopolymer of propylene and/or a propylene copolymer containing 4% by weight or less of another olefin unit in which range of 20 to 60%, a Tm measured by a DSC is 150.degree. C. or more, and a melt enthalpy is 100 J/g or less, and (b) 0 to 80% by weight of a propylene copolymer containing 10 to 80% by weight of an olefin unit other than propylene, with (B) 0.01 to 5 parts by weight of an octyltin salt of a fatty acid, an alkylenebisfatty acid amide, a fatty acid ester of a polyvalent alcohol, or a metal salt of an aliphatic monocarboxylic acid.
The employment of this polypropylene resin composition permits, under a good moldability by the calender molding machine, the manufacture of films and sheets having less thickness unevenness, excellent appearance and heat resistance and such flexibility as in molded articles of a plastic polyvinyl chloride.

REFERENCES:
patent: 4268552 (1981-05-01), Duvdevani et al.
patent: 5216056 (1993-06-01), Suhoza
Database WPI, Derwent Publications, AM-91-257266, JP-A-03-168238, Jul. 22, 1991.
Database WPI, Derwent Publications, AM-95-102012, JP-A-07-026077, Jan. 27, 1995.

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