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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.:

US 8921466 B1

PDFFull Text
Expired
Date of Patent:
Dec. 30, 2014

Filed:

Jan. 14, 2011

Concurrent solid and melt state grafting of coagents for making long chain branched polypropylene via direct reactive extrusion process

Applicants:

Uma Sankar Satpathy, Gujarat, IN;

Shashikant, Gujarat, IN;

Ajit Behari Mathur, Gujarat, IN;

Inventors:

Uma Sankar Satpathy, Gujarat, IN;

Shashikant, Gujarat, IN;

Ajit Behari Mathur, Gujarat, IN;

Assignee:

Reliance Industries Limited, Mumbai, Maharashra, IN;

Attorneys:

Tim Tingkang Xia, Esq.

Morris, Manning & Martin, LLP

Primary Examiner:

William Cheung

Int. Cl.
CPC ...
C01F 7/00 (2006.01); B32B 17/10 (2006.01); C08L 33/00 (2006.01); C09K 15/32 (2006.01); C08F 210/00 (2006.01); C08F 110/06 (2006.01); C08K 5/00 (2006.01); C08F 255/02 (2006.01); C08F 8/00 (2006.01); C08F 210/06 (2006.01);
U.S. Cl.
CPC ...
C08F 255/02 (2013.01); C08F 210/06 (2013.01); C08K 5/005 (2013.01); C08F 8/00 (2013.01);
Abstract

A process of modifying propylene polymers via melt grafting of polyfunctional monomer (PFMs) involving pre-initiative step thereby facilitating perfect absorption of PFMs on polymer matrix and initiate their grafting prior to reactive extrusion without using free radical initiators so that branching can be introduced in propylene polymer matrix. The modified propylene polymers showed enhanced shear sensitivity, increase in molecular weight, broadening of molecular weight distribution and strain hardening.

Find Patent Forward Citations

Satpathy, Uma. (2014). Concurrent solid and melt state grafting of coagents for making long chain branched polypropylene via direct reactive extrusion process (U.S. Patent No. 8921466). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8921466

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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