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.

Date of Patent:
Oct. 02, 2018

Filed:

Jan. 12, 2012
Applicants:

Hiroe Kumazawa, Kanagawa, JP;

Hiroki Yamasaki, Ehime, JP;

Hideaki Suzuki, Ibaraki, JP;

Kozo Tamura, Ibaraki, JP;

Inventors:

Hiroe Kumazawa, Kanagawa, JP;

Hiroki Yamasaki, Ehime, JP;

Hideaki Suzuki, Ibaraki, JP;

Kozo Tamura, Ibaraki, JP;

Assignee:

KURARAY CO., LTD., Kurashiki-shi, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B 1/24 (2006.01); C08L 77/06 (2006.01); C08G 69/26 (2006.01); C08K 3/04 (2006.01); C08K 7/24 (2006.01); C08L 51/06 (2006.01); F16L 9/12 (2006.01);
U.S. Cl.
CPC ...
H01B 1/24 (2013.01); C08G 69/265 (2013.01); C08K 3/04 (2013.01); C08K 3/041 (2017.05); C08K 7/24 (2013.01); C08L 51/06 (2013.01); C08L 77/06 (2013.01); C08K 2201/001 (2013.01); C08K 2201/011 (2013.01); F16L 9/12 (2013.01); F16L 9/125 (2013.01); Y10T 428/139 (2015.01);
Abstract

The present invention provides a polyamide resin composition not only having an appropriate melt viscosity despite addition of a conductive filler thereto but also having excellent moldability, conductivity, low-temperature impact resistance, and fuel barrier properties. The present invention is a polyamide resin composition containing specific amounts of a polyamide, a modified resin, and a conductive filler. The polyamide contains: dicarboxylic acid units containing 50 mol % or more of terephthalic acid units and/or naphthalenedicarboxylic acid units; and diamine units containing 60 mol % or more of aliphatic diamine units having 4 to 18 carbon atoms, and has terminal amino groups in an amount of 5 to 60 μmol/g. The modified resin has been modified with an unsaturated compound having a carboxyl group and/or an acid anhydride group. In the polyamide resin composition, a difference between the number of moles (M) of the terminal amino groups of the polyamide and the number of moles (M) of the carboxyl groups and the acid anhydride groups of the modified resin in 1 g in total of the polyamide and the modified resin is −5.0 μmol or more and less than 4.0 μmol, and the number of moles (M) is more than 4.0 μmol.


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