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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 9683141 B1

PDFFull Text
Date of Patent:
Jun. 20, 2017

Filed:

Oct. 31, 2013

Polyolefin, adhesive composition containing same, and adhesive tape using said adhesive composition

Applicant:

Idemitsu Kosan Co., Ltd., Chiyoda-ku, JP;

Inventors:

Yutaka Minami, Chiba, JP;

Kazuhiro Hashima, Chiba, JP;

Masami Kanamaru, Chiba, JP;

Assignee:

IDEMITSU KOSAN CO., LTD., Chiyoda-ku, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Michael Pepitone

Int. Cl.
CPC ...
C09J 123/12 (2006.01); C09J 123/20 (2006.01); C08F 10/06 (2006.01); C09J 123/18 (2006.01); C08L 23/12 (2006.01); C08L 23/18 (2006.01); C08F 10/08 (2006.01); C08F 110/06 (2006.01); C09J 7/02 (2006.01); C08F 4/659 (2006.01);
U.S. Cl.
CPC ...
C09J 123/20 (2013.01); C08F 10/06 (2013.01); C08F 10/08 (2013.01); C08F 110/06 (2013.01); C08L 23/12 (2013.01); C08L 23/18 (2013.01); C09J 7/021 (2013.01); C09J 123/12 (2013.01); C09J 123/18 (2013.01); C08F 4/65908 (2013.01); C08F 4/65912 (2013.01); C09J 2423/00 (2013.01);
Abstract

Provided are an adhesive composition which has high holding strength and leaves no residual glue by using a polyolefinic polymer, and an adhesive tape using the same. A polyolefin which satisfies the following conditions (a-1), (b1), and (b2):(a-1) the relationship between the limiting viscosity and the stereoregularity is represented by the formula (i): −20×η+56≦mmmm≦−20×η+64 (wherein η represents the limiting viscosity measured in tetralin at 135° C., and mmmm represents the meso pentad fraction (mol %)); (b1) the meso pentad fraction (mmmm) is from 20 to 60 mol %; and (b2) the limiting viscosity [η] measured in tetralin at 135° C. is from 0.01 to 2.0 dL/g.

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