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:
Nov. 19, 2002
Filed:
Jul. 19, 2001
Applicant:
Inventors:
Shahriar Hojjati Emami, Los Angeles, CA (US);
Ronald Salovey, Los Angeles, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 2/46 ; C08G 6/534 ;
U.S. Cl.
CPC ...
C08F 2/46 ; C08G 6/534 ;
Abstract
A new method for crosslinking polyethylene oxide (PEO) by means of a dialkyl peroxide to form a gel, which can imbibe large amounts of water. Two separate ovens were used to crosslink PEO with the peroxide. The first oven is set at 85° C. for 2.5 minutes for melting the polymer and purging oxygen with acetone vapors and forming a shield around the sample to minimize oxygen diffusion from outside, meanwhile, trapping peroxides inside. A second oven was used to thermally decompose the peroxide. The crosslinking reaction proceeds at 160° C. for 15 minutes.