Polypropylene laminate film

Details Polypropylene laminate film Polypropylene laminate film

1994-07-08

1996-01-23

Buffalow, Edith

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428515, 526159, B32B 712

Patent

active

054864151

ABSTRACT:
A polypropylene laminate film comprising a crystalline polypropylene layer having laminated on at least one surface thereof a copolymer which is a random copolymer of propylene, ethylene, and an .alpha.-olefin having at least 4 carbon atoms, the copolymer being obtained by a vapor-phase polymerization using a catalyst system comprising a solid catalyst component containing magnesium, titanium, and a halogen, an organoaluminum compound, and an electron donative compound in substantially the absence of a liquid medium, and satisfying the following requirements (1) to (7):

REFERENCES:
patent: 4297411 (1981-10-01), Weiner
patent: 4652489 (1987-03-01), Crass et al.
patent: 4675247 (1987-06-01), Kitamura et al.
patent: 4761462 (1988-08-01), Kitamura et al.
patent: 4769284 (1988-09-01), Kukugo et al.
patent: 4786562 (1988-11-01), Kakugo et al.
patent: 4983561 (1991-01-01), Sasaki et al.

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