Butene-1 polymer film and laminated film thereof

Details Butene-1 polymer film and laminated film thereof Butene-1 polymer film and laminated film thereof

1988-12-27

1992-03-03

Seccuro, Carman J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

428336, 4284769, 428483, 428516, 428335, 525240, 525191, C08L 2320, B32B 2728, B32B 2732

Patent

active

050931890

ABSTRACT:
The present invention provides a butene-1 polymer film which comprises a composition comprising 100 parts by weight of a butene-1 polymer having a melt index of 0.1-20 g/10 min, a ratio of weight-average molecular weight
umber-average molecular weight of 3-12 and having a maximum melting point of 60.degree.-140.degree. C. measured by differential scanning calorimetric analysis method and 200 parts by weight or less of an olefin polymer and which has a tensile modulus of 500-8,000 kg/cm.sup.2, a tear strength in TD or MD of 10 kg/cm or less and a ratio of tear strength in MD and tear strength in TD (MD/TD or TD/MD) of 4 or more.
The present invention further provides a laminated film comprising the above butene-1 polymer film and a different polyolefin resin layer laminated on at least one surface of the butene-1 polymer film.

REFERENCES:
patent: 3634552 (1972-01-01), Foglia et al.
patent: 4226905 (1980-10-01), Harbourne
patent: 4230767 (1980-10-01), Isaka et al.
patent: 4734328 (1988-03-01), Kohyama et al.
patent: 4870122 (1989-09-01), Lu
Database Chemical Abstracts (HOST:STN), 1990, Ref. No. 98 (24) Abstract No. 199461c, Columbus, Ohio U.S.; & JP-B-57 051 870 (Mitsui Toatsu Chemicals) 04-11-1982, Whole Abstract.

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