Butene-1 copolymer composition

Details Butene-1 copolymer composition Butene-1 copolymer composition

1988-07-13

1990-12-04

Schofer, Joseph L.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

526142, 5263486, C08L 2304, C08L 2310

Patent

active

049754920

ABSTRACT:
The present invention relates to a butene-1 copolymer composition which has excellent heat sealing properties, mechanical characteristics, moldability, and transparency without lowering its surface characteristics, and is characterized by containing 75 to 99.5% by weight of a butene-1 copolymer comprising butene-1 unit and .alpha.-olefine having a carbon number of 2 to 3, and 25 to 0.5% by weight of a propylene polymer, the said butene-1 copolymer has an .alpha.-olefine unit content of 1 to 35 mol %, intrinsic viscosity of 0.9 to 7.2 dl/g, weight-average molecular weight
umber-average molecular weight of 4 to 15, and the content of the boiling diethyl ether soluble component is 3 to 15% by weight of the copolymer.

REFERENCES:
patent: T955099 (1977-02-01), Lansbury et al.
patent: 3634552 (1972-01-01), Foglia et al.
patent: 3634553 (1972-01-01), Foglia et al.
patent: 3836607 (1974-09-01), Finkmann et al.
patent: 4230767 (1980-10-01), Isaka et al.
patent: 4734328 (1988-03-01), Kohyama et al.

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