Film product comprising novel polyolefins

Details Film product comprising novel polyolefins Film product comprising novel polyolefins

1997-08-25

2000-01-25

Thibodeau, Paul

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428215, 428220, 428515, 428516, 428520, B32B 2732

Patent

active

060176156

ABSTRACT:
Multi-layer film products comprising an inner or core layer made from polyolefin polymers produced by polymerizing an .alpha.-olefin in the presence of a catalyst including: a pro-catalyst having a magnesium halide; an aluminum halide; a tetravalent titanium halide, ;an electron donor; and a silane having the formula R.sub.1 R.sub.2 Si(OR.sub.3)(OR.sub.4), wherein R.sub.1 and R.sub.2 are each an H, C.sub.1-6 alkyl, aryl, C.sub.5-12 cycloalkyl, each of which may be unsubstituted, mono- or di-substituted, and R.sub.3 and R.sub.4 are H, C.sub.1-6 alkyl, or a mono- or di-substituted C.sub.1-6 alkyl; and a co-catalyst comprising an organometallic compound, or reaction products of the pro-catalyst and the co-catalyst. The film products have excellent clarity, superior dart impact, resistance to tear and favorable sealibility characteristics.

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