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:
Feb. 11, 2025
Filed:
Apr. 03, 2020
W. R. Grace & Co.-conn., Columbia, MD (US);
John Kalevi Kaarto, Columbia, MD (US);
Jing Zhong, Columbia, MD (US);
Amaia Montoya-Goni, Columbia, MD (US);
W. R. Grace & Co.-Conn., Columbia, MD (US);
Abstract
Polypropylene polymer compositions are disclosed that can be formulated to have excellent clarity properties in conjunction with excellent impact resistance properties at subzero temperatures. The polypropylene polymer compositions are heterophasic compositions containing a first phase polymer combined with a second phase polymer. The first phase polymer is a polypropylene and alpha-olefin copolymer while the second phase polymer is also a polypropylene and alpha-olefin random copolymer. The second phase polymer contains relatively high amounts of ethylene. The increased amounts of ethylene in the second phase polymer were found to dramatically improve impact resistance at subzero temperatures.