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. 18, 1976
Filed:
Sep. 18, 1974
Applicant:
Inventor:
Herman J Baumgartner, Cypress, CA (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
2608 / ; 260 / ; 526 20 ; 526 25 ; 526 70 ; 526 81 ; 526 82 ; 526173 ; 526210 ; 526 90 ; 528500 ;
Abstract
A cyclic process is provided for the polymerization and hydrogenation of certain polymers wherein the monomer is anionically polymerized in solution, the living polymers then being terminated by the use of a proton donor, after which the polymer is subjected to catalytic hydrogenation wherein the catalyst is optionally activated with certain polar compounds after which the polymer is coagulated and heated to remove any residual terminator and activator and the solvent is fractionally distilled to recover and recycle the solvent without contamination from the substantially higher boiling terminator and optional activator.