US 8,940,379 B2Granted

Polyamide resin composition

AssigneeMitsubishi Gas Chemical Company, Inc.

InventorsRyoji Otaki, Jun Mitadera, Tomonori Kato, Tomomichi Kanda

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Abstract

A polyamide resin composition contains a resin component containing at least a polyamide, a fatty acid metallic salt having from 10 to 50 carbon atoms, and an additive. The polyamide is obtained through melt polycondensation of a diamine component containing 70% by mol or more of m-xylylenediamine and a dicarboxylic acid component containing 70% by mol or more of an α,ω-linear aliphatic dicarboxylic acid. The additive is at least one compound selected from the group consisting of a diamide compound obtained from a fatty acid having from 8 to 30 carbon atoms and a diamine having from 2 to 10 carbon atoms, a diester compound obtained from a fatty acid having from 8 to 30 carbon atoms and a diol having from 2 to 10 carbon atoms, and a surfactant.

Claims17

Dependent claims

A polyamide resin composition comprising:

a resin component containing a polyamide (X) obtained through melt polycondensation of a diamine component containing 70% by mol or more of m-xylylenediamine and a dicarboxylic acid component containing 70% by mol or more of an α,ω-linear aliphatic dicarboxylic acid,
a fatty acid metallic salt having from 10 to 50 carbon atoms, and
an additive (A),
wherein the additive (A) is a surfactant, wherein the surfactant is a nonionic surfactant which is polyoxyethylenesorbitan monolaurate and has a kinematic viscosity of 200 to 1,000 mm2/s at 25° C., and wherein an addition amount of the nonionic surfactant in the polyamide resin composition is 50 to 200 ppm, and
wherein the half crystallization time of the polyamide (X) at 160° C. is from 10 to 1,600 s and the melting point of the polyamide (X) is from 200 to 265° C.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/439,577Filed 4 Apr 2012 · continuation
Priority: JP 2006-15166331 May 2006
Published: US 2012/0258268 A111 Oct 2012
Granted: 27 Jan 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification31 codes

C08K 5/0008
Use of organic ingredients: organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
B29B 9/12
Making granules: characterised by structure or composition
B32B 27/08
As the main or only constituent of a layer, which is next to another layer of the same or of a different material: of synthetic resin
B32B 27/32
Layered products comprising a layer of synthetic resin: comprising polyolefins

Family

PCT/JP2007/061138Parent of this continuation · filed 31 May 2007
US 2012/0258268 A1Pre-grant publication · published 11 Oct 2012
Application12/302,335Parent of this continuation
US 8,273,431 B2Parent of this continuation
US 2009/0239013 A1Published application
US 8,940,379 B2This patent

From the US filing history. Foreign family members aren’t listed.