4-methyl-1-pentene polymer compositions, and the laminates and a

Details 4-methyl-1-pentene polymer compositions, and the laminates and a 4-methyl-1-pentene polymer compositions, and the laminates and a

1998-08-07

2000-12-05

Niland, Patrick D.

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

Synthetic resins

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

525 71, 525 74, C08L 3302, C08L 5100, C08L 5104, C08L 5300, C08G 6391

Patent

active

061568414

ABSTRACT:
The present invention relates to 4-methyl-1-pentene polymer compositions. Specifically, the present invention relates to adhesive compositions comprising the 4-methyl-1-pentene polymers used in bonding a 4-methyl-1-pentene polymer layer and a polar-group-containing resin layer, and laminates obtained by using such compositions. The 4-methyl-1-pentene polymer compositions as these adhesive compositions comprise a 4-methyl-1-pentene polymer (A); and a modified polyolefin resin (B) comprising a mixture of an unsaturated carboxylic acid-modified .alpha.-olefin polymer (B-1) whose .alpha.-olefin is selected from a group of propylene, butene-1 and 4-methyl-1-pentene and an unsaturated carboxylic acid-modified ethylene/.alpha.-olefin copolymer (B-2). In these compositions, an unsaturated carboxylic acid-modified 4-methyl-1-pentene polymer (A') showing a particular modification rate and a particular melt flow rate may be used in place of (A) and (B-1). These compositions have excellent adhesion to polar-group-containing resins having the OH group and the NH group, among others. The laminates obtained by laminating a 4-methyl-1-pentene polymer layer and a polar-group-containing resin layer via any of these compositions show excellent interlaminar adhesion (average peel strength) and yet heat resistance.

REFERENCES:
patent: H568 (1989-01-01), Tanaka et al.
patent: 4501827 (1985-02-01), Nagano et al.

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