Grafted polyolefin composition having improved adhesiveness

• US 4,198,327 A
• Filed: 12/22/1976
• Issued: 04/15/1980
• Est. Priority Date: 12/27/1975
• Status: Expired due to Term

• Current Assignee: Mitsui Petrochemical Industries, Ltd. (Mitsui Chemicals)
• Original Assignee: Mitsui Petrochemical Industries, Ltd. (Mitsui Chemicals)
• Inventors: Matsumoto, Hisashi, Niimi, Hiroji
• Primary Examiner(s): Anderson, Harold D.
• Application Number:
  US05/753,412
• Time in Patent Office: 1,210 Days
• Field of Search: 260/3, 260/876 R, 260/876 B, 260/897 B, 260/4 R, 260/4 A, 260/5, 525/73, 525/74, 525/77, 525/78, 525/80, 525/81, 525/84, 525/86
• US Class Current: 525/73
• CPC Class Codes: C08L 23/00 Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C08L 51/06 grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
• CPC Class Codes: C08L 7/00 Compositions of natural rubber
• CPC Class Codes: C08L 9/06 Copolymers with styrene
• CPC Class Codes: C09J 151/06 grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
• CPC Class Codes: Y10T 428/31826 Of natural rubber
• CPC Class Codes: Y10T 428/31855 Of addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31931 Polyene monomer-containing
• CPC Class Codes: Y10T 428/31935 Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31938 Polymer of monoethylenically unsaturated hydrocarbon

Abstract

A composition having improved adhesion to polar solid materials which comprises

(A) 99 to 70 parts by weight of a modified crystalline polyolefin having grafted thereto a monomer selected from the group consisting of unsaturated carboxylic acids and their anhydrides, esters, amides imides and metal salts, said crystalline polyolefin having a degree of crystallinity measured by an X-ray analysis, of at least 25% and containing the grafting monomer in an amount of 0.0001 to 3% by weight based on the total amount of the crystalline polyolefin and the grafting monomer; and

(B) 1 to 30 parts by weight of a hydrocarbon elastomer.

Claims

1. A composition having improved adhesion to polar solid materials which consists essentially of

(A) 97 to 80 parts by weight based on the total weight of the resin composition of a modified crystalline polyolefin having grafted thereto a monomer selected from the group consisting of unsaturated aliphatic carboxylic acids selected from the group consisting of acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid and citraconic acid, or its anhydride, ester, amide, imide or metal salt, said crystalline polyolefin having a degree of crystallinity measured by an X-ray analysis, of at least 25%, and containing the grafting monomer in an amount of 0.0001 to 3% by weight based on the total amount of the crystalline polyolefin and the grafting monomer;

and

(B) 3 to 20 parts by weight of a hydrocarbon elastomer selected from the group consisting of natural rubber, polyisobutylene, ethylene/propylene rubber, ethylene/1-butene rubber, butyl rubber, styrene butadiene rubber, ethylene/butadiene rubber, or isoprene rubber.

2. The composition of claim 1 wherein the graft-modified crystalline polyolefin is a mixture of a grafted crystalline polyolefin having grafted thereto a grafting monomer with an ungrafted crystalline polyolefin.

3. The composition of claim 1 wherein the crystalline polyolefin is a homopolymer or copolymer of an α

-olefin selected from the group consisting of ethylene, propylene, 1-butene, 1-pentene, 3-methyl-1-butene, 1-hexene and 4-methyl-1-pentene.