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:
Jun. 06, 2006
Filed:
Oct. 19, 2004
C. Edward Baxter, Jr., League City, TX (US);
Gilbert Valdez, Pearland, TX (US);
Christopher Lobue, Montgomery, TX (US);
Timothy Lowry, Spring, TX (US);
Armen Abazajian, Houston, TX (US);
C. Edward Baxter, Jr., League City, TX (US);
Gilbert Valdez, Pearland, TX (US);
Christopher Lobue, Montgomery, TX (US);
Timothy Lowry, Spring, TX (US);
Armen Abazajian, Houston, TX (US);
Texas Petrochemicals, LP, Houston, TX (US);
Abstract
A process for making a relatively low molecular weight, mid-range vinylidene content PIB polymer product comprising a liquid phase polymerization process conducted in a loop reactor at a temperature of at least 60° F. using a BF/methanol catalyst complex and a contact time of no more than 4 minutes. At least about 90% of the PIB molecules present in the product comprise alpha or beta position isomers. The vinylidene (alpha) isomer content of the product may range from 20% to 70% thereof, and the content of tetra-substituted internal double bonds is very low, advantageously no more than about 10%, preferably less than about 5% and ideally less than about 1–2%.