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:
May. 02, 1995
Filed:
Feb. 22, 1994
Applicant:
Inventors:
David R Hansen, Houston, TX (US);
Steven H Dillman, Bellingham, WA (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ;
U.S. Cl.
CPC ...
525 98 ; 525 95 ; 525 99 ;
Abstract
A linear styrene-isoprene-styrene block copolymer composition comprised of linear polymeric blocks wherein the block copolymer composition has a coupling efficiency of from 20 to 40%, a polystyrene content of from 18 to 24%, a polystyrene block molecular weight of from 25,000 to 35,000, and an overall molecular weight of above 280,000 to 520,000. The invention also contemplates adhesive formulations comprising these block copolymer compositions and a tackifying resin.