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:
Mar. 12, 2024
Filed:
Apr. 26, 2019
China Petroleum & Chemical Corporation, Beijing, CN;
Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation, Beijing, CN;
Jinliang Qiao, Beijing, CN;
Songhe Wang, Beijing, CN;
Xiaohong Zhang, Beijing, CN;
Guicun Qi, Beijing, CN;
Zhihai Song, Beijing, CN;
Chuanlun Cai, Beijing, CN;
Xiang Wang, Beijing, CN;
Jinmei Lai, Beijing, CN;
Binghai Li, Beijing, CN;
Haibin Jiang, Beijing, CN;
Yue Ru, Beijing, CN;
Jiangru Zhang, Beijing, CN;
Jianming Gao, Beijing, CN;
Hongbin Zhang, Beijing, CN;
Peng Han, Beijing, CN;
Wenlu Liu, Beijing, CN;
Abstract
A grafted polypropylene resin is prepared by a grafting reaction of a polar monomer capable of absorbing microwave so as to raise its temperature in a microwave field to more than 200° C. and a solid polypropylene resin using microwave irradiation without adding an initiator. The polar grafted polypropylene resin that does not contain initiator residues and does not have a significant reduction in molecular mass compared with a resin before grafting is obtained.