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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 10435524 B1

PDFFull Text
Date of Patent:
Oct. 08, 2019

Filed:

Nov. 24, 2015

Process for the manufacture of long glass fibre reinforced polypropylene compositions

Applicant:

Sabic Global Technologies B.v., Bergen op Zoom, NL;

Inventors:

Carmela Tufano, Maastricht, NL;

Christelle Marie Hélène Grein, Heel, NL;

Assignee:

SABIC GLOBAL TECHNOLOGIES B.V., Bergen Op Zoom, NL;

Attorney:

Cantor Colburn LLP

Primary Examiner:

Stella K Yi

Int. Cl.
CPC ...
C08J 5/08 (2006.01); B29B 9/14 (2006.01); B29B 15/12 (2006.01); B29B 9/06 (2006.01); B29C 48/154 (2019.01); B29K 23/00 (2006.01); B29K 105/16 (2006.01); B29K 509/08 (2006.01); B29C 48/30 (2019.01); B29C 48/05 (2019.01); B29C 48/04 (2019.01); B29C 48/00 (2019.01); B29C 48/285 (2019.01); B29C 48/34 (2019.01);
U.S. Cl.
CPC ...
C08J 5/08 (2013.01); B29B 9/06 (2013.01); B29B 9/14 (2013.01); B29B 15/122 (2013.01); B29C 48/154 (2019.02); B29C 48/0022 (2019.02); B29C 48/04 (2019.02); B29C 48/05 (2019.02); B29C 48/2886 (2019.02); B29C 48/30 (2019.02); B29C 48/34 (2019.02); B29K 2023/12 (2013.01); B29K 2105/16 (2013.01); B29K 2509/08 (2013.01); C08J 2323/12 (2013.01);
Abstract

The present invention relates to a process for the manufacture of a long glass fiber reinforced polypropylene composition at a line speed of at least 6.7 m/s comprising the steps of a) providing at least one continuous glass multifiber strand, b) applying from 0.5 to 20 wt. % based on the weight of the composition of an impregnating agent to said at least one continuous multifiber strand, c) applying a sheath of a polypropylene composition around the strand obtained in step b) so as to form a sheathed continuous multifiber strand, wherein the impregnating agent contains at least 90 wt. % of microcrystalline wax based on the weight of the impregnating agent.

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