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. 14, 2003
Filed:
Oct. 29, 2001
Wendy D. Hoenig, Lake Jackson, TX (US);
Teresa Karjala, Lake Jackson, TX (US);
Che-I Kao, Lake Jackson, TX (US);
Clark H. Cummins, Midland, MI (US);
Michael J. Mullins, Lake Jackson, TX (US);
H. Craig Silvis, Midland, MI (US);
Thoi H. Ho, Lake Jackson, TX (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
The present invention includes a process of preparing a coupled polymer comprising heating an admixture containing (1) at least one elastomer comprising ethylene and at least one comonomer which is selected from alpha olefins having at least 3 carbon atoms, dienes and combinations thereof and (2) a coupling amount at least one poly(sulfonyl azide) to at least the decomposition temperature of the poly(sulfonyl azide) for a period sufficient for decomposition of at least 80 weight percent of the poly(sulfonyl azide) and sufficient to result in a coupled polymer having a gel content of less than 2 weight percent. The invention includes compositions comprising the reaction product formed by the inventive process. The invention additionally includes articles which comprise a composition of the invention particularly when the article is formed from a melt of the composition.