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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 12428528 B1

PDFFull Text
Date of Patent:
Sep. 30, 2025

Filed:

Nov. 19, 2020

Reinforced polypropylene material and preparation method thereof

Applicant:

Kingfa Sci. & Tech. Co., Ltd., Guangdong, CN;

Inventors:

Zhanquan Lu, Guangdong, CN;

Xianbo Huang, Guangdong, CN;

Nanbiao Ye, Guangdong, CN;

Shuwen Cheng, Guangdong, CN;

Annan Guan, Guangdong, CN;

Lewen Liu, Guangdong, CN;

Xiaoyun Yang, Guangdong, CN;

Assignee:

KINGFA SCI. & TECH. CO., LTD., Guangdong, CN;

Attorney:

JCIPRNET

Primary Examiner:

Marc S Zimmer

Assistant Examiner:

Ronald Grinsted

Int. Cl.
CPC ...
C08J 5/04 (2006.01); B29C 48/00 (2019.01); B29C 48/02 (2019.01); B29C 48/04 (2019.01); B29C 48/40 (2019.01); C08K 3/22 (2006.01); C08K 7/10 (2006.01); C08K 7/14 (2006.01); B29K 23/00 (2006.01); B29K 105/12 (2006.01);
U.S. Cl.
CPC ...
C08J 5/043 (2013.01); B29C 48/022 (2019.02); B29C 48/04 (2019.02); B29C 48/40 (2019.02); C08K 3/2279 (2013.01); C08K 7/10 (2013.01); C08K 7/14 (2013.01); B29K 2023/12 (2013.01); B29K 2105/12 (2013.01); C08J 2323/12 (2013.01); C08K 2003/2241 (2013.01); C08K 2003/2296 (2013.01);
Abstract

Disclosed is a reinforced polypropylene material, comprising in parts by weight: a, 10-90 parts of polypropylene resin, b, 0.5-25 parts of compatilizer, c, 5-60 parts of reinforced fibers and d, 0.1-20 parts of low-hardness toner. The reinforced fibers comprise a component I, a component II and a component III, where the component I is composed of reinforced fibers with a length of 0.1-0.6 mm and accounts for 35-50% of number of reinforced fibers, the component II is composed of reinforced fibers with a length of 0.7-1.3 mm and accounts for 35-45% of number of reinforced fibers, and component III is composed of reinforced fibers with a length of 1.4-2.0 mm and accounts for 5-20% of number of reinforced fibers. The present invention, by adjusting the length and the content distribution of the reinforced fibers in the reinforced polypropylene material formula, greatly preserves the maintained length of the reinforced fibers in the reinforced polypropylene material, and by combining a specific amount of low hardness toner and a specific amount of compatilizer, the low-temperature resilience and the long-term weatherability performance of the resulting reinforced polypropylene material are significantly improved.

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