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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 10843432 B1

PDFFull Text
Date of Patent:
Nov. 24, 2020

Filed:

Jul. 17, 2018

Multilayer water pipe for mining operations

Applicant:

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

Inventors:

Ying Na, Shanghai, CN;

Guangtao Chen, Shanghai, CN;

Yonglei Xu, Shanghai, CN;

Haiyang Gan, Shanghai, CN;

Assignee:

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

Attorney:

Cantor Colburn LLP

Primary Examiner:

Walter Aughenbaugh

Int. Cl.
CPC ...
B32B 1/08 (2006.01); F16L 9/12 (2006.01); B29C 48/21 (2019.01); B32B 27/08 (2006.01); B32B 27/28 (2006.01); B32B 27/32 (2006.01); C08K 5/00 (2006.01); C08L 71/12 (2006.01); F16L 9/133 (2006.01); B32B 27/18 (2006.01); B32B 27/20 (2006.01); B29C 48/09 (2019.01); B29K 23/00 (2006.01); B29L 23/00 (2006.01);
U.S. Cl.
CPC ...
B32B 1/08 (2013.01); B32B 27/08 (2013.01); B32B 27/18 (2013.01); B32B 27/20 (2013.01); B32B 27/28 (2013.01); B32B 27/285 (2013.01); B32B 27/32 (2013.01); B32B 27/327 (2013.01); C08K 5/0066 (2013.01); C08K 5/0075 (2013.01); C08L 71/123 (2013.01); F16L 9/12 (2013.01); F16L 9/133 (2013.01); B29C 48/09 (2019.02); B29C 48/21 (2019.02); B29K 2023/065 (2013.01); B29K 2065/00 (2013.01); B29L 2023/22 (2013.01); B32B 2250/02 (2013.01); B32B 2250/24 (2013.01); C08L 2203/18 (2013.01);
Abstract

A multilayer water pipe for mining operations has an outer layer and an inner layer. The inner layer of the multilayer water pipe includes a composition containing a poly(phenylene ether), a hydrogenated block copolymer of an alkenyl aromatic monomer and a conjugated diene, optionally, a homopolystyrene, a rubber-modified polystyrene, or a combination comprising at least one of the foregoing, and a flame retardant comprising an organophosphate ester. The outer layer of the multilayer water pipe includes a composition containing a high density polyethylene, an antistatic agent, a flame retardant, and a flame retardant synergist. The multilayer water pipe exhibits a desirable balance of impact strength, tensile strength, burst pressure resistance, static pressure resistance, flame retardancy, and outer surface electrical resistance.

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