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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9273202 B1

PDFFull Text
Date of Patent:
Mar. 01, 2016

Filed:

Aug. 28, 2009

Adhesive composition and adhesive containing the same

Applicants:

Hiroshi Hoya, Chiba, JP;

Koji Matsunaga, Yokohama, JP;

Yoji Hayakawa, Chiba, JP;

Hiroto Yasui, Ichihara, JP;

Shin Tokui, Singapore, SG;

Inventors:

Hiroshi Hoya, Chiba, JP;

Koji Matsunaga, Yokohama, JP;

Yoji Hayakawa, Chiba, JP;

Hiroto Yasui, Ichihara, JP;

Shin Tokui, Singapore, SG;

Assignee:

MITSUI CHEMICALS, INC., Tokyo, JP;

Attorney:

Foley & Lardner LLP

Primary Examiner:

Alexander Kollias

Int. Cl.
CPC ...
C08K 5/00 (2006.01); B01F 17/00 (2006.01); C08L 23/14 (2006.01); C09J 123/10 (2006.01); C09J 123/14 (2006.01); C08L 23/10 (2006.01); C08L 23/12 (2006.01);
U.S. Cl.
CPC ...
C08L 23/142 (2013.01); C09J 123/10 (2013.01); C09J 123/142 (2013.01); C08L 23/10 (2013.01); C08L 23/12 (2013.01); C08L 2205/02 (2013.01);
Abstract

It is an object of the present invention to provide adhesive compositions having excellent flexibility, rubber elasticity, mechanical properties, heat resistance and low-temperature properties. An adhesive composition of the invention includes 10 to 70 parts by weight of a soft polypropylene resin composition (X) which includes 40 to 98 wt % of a propylene copolymer (A) satisfying the following requirements (A) to (A) and 2 to 60 wt % of a crystalline isotactic polypropylene (B) satisfying the following requirements (B) to (B), and 30 to 90 parts by weight of a tackifier (C) (wherein the total of the component (X) and the component (C) is 100 parts by weight), wherein (A) Shore A hardness: 20 to 90; (A) the copolymer comprises a copolymer with Cunits at 51 to 90 mol %, Cunits at 7 to 24 mol % and Cα-olefin units at 3 to 25 mol %; (A) Mw/Mn: 1.2 to 3.5; (A) mm: 85 to 99.9%; (A) value B: 0.8 to 1.3; (A) 2,1-insertion ratio: less than 1%; (A) Tg: −10° C. to −50° C.; (A) MFR (230° C.): 0.5 to 500 g/10 min; (B) Tm: 100 to 175° C.; (B) mmmm: 90 to 99.8%; (B) MFR (230° C.): 0.1 to 100 g/10 min.

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