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.:
Date of Patent:
Jan. 01, 1980
Filed:
Feb. 17, 1978
Applicant:
Inventors:
Hideo Takamatsu, Ibaragi, JP;
Shobu Minatono, Ibaragi, JP;
Katsuyoshi Terao, Ibaragi, JP;
Junnosuke Yamauchi, Ibaragi, JP;
Assignee:
Kuraray Co., Ltd., Kurashiki, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ; C08L / ; C09J / ;
U.S. Cl.
CPC ...
260-5 ; 260 / ; 260 / ; 525 92 ; 525 93 ; 525 95 ; 525 98 ; 525 99 ; 525185 ; 525214 ; 525219 ; 525222 ;
Abstract
A pressure-sensitive adhesive composition having excellent tackiness and improved thermal resistance comprises (A) a low molecular weight polyisoprene, which may be obtained by polymerizing isoprene monomer with the aid of a lithium-type catalyst, said polyisoprene having a cis-1,4 content of not less than 75%, a viscosity average molecular weight of 8,000 to 77,000 and an Mw/Mn value (Mw: weight average molecular weight; Mn: number average molecular weight) of 1.0 to 2.7 and (B) an elastomer.