Injection-molded body

Patent metadata

Field	Value
Publication number	US-9718955-B2
Application number	US-201214128988-A
Country	US
Kind code	B2
Filing date	Jun 19, 2012
Priority date	Jun 27, 2011
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

An injection molded article containing a resin composition containing a polyamide compound (A) and a resin (B), wherein the polyamide compound (A) contains from 25 to 50% by mol of a diamine unit, which contains a particular diamine unit, in an amount of 50% by mol or more; from 25 to 50% by mol of a dicarboxylic acid unit, which contains a particular dicarboxylic acid unit, in an amount of 50% by mol or more; and from 0.1 to 50% by mol of a particular constitutional unit.

First claim

The invention claimed is:

1. An injection molded article, comprising a resin composition comprising a polyamide compound and a resin, wherein the polyamide compound comprises:
from 25 to 50% by mol of a diamine unit comprising at least one diamine unit selected from the group consisting of an aromatic di amine unit of formula (I-1), and an alicyclic diamine unit of formula (I-2), in an amount in total of 50% by mol or more;
from 25 to 50% by mol of a dicarboxylic acid unit comprising a linear aliphatic dicarboxylic acid unit of formula (II-1), an aromatic dicarboxylic acid unit of formula (II-2), or both in an amount in total of 50% by mol or more; and
from 0.1 to 50% by mol of a constitutional unit of formula (III):

and wherein:
n is an integer of from 2 to 18;
Ar is an arylene group; and
R is a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group.

2. The injection molded article according to claim 1 , wherein R is a substituted or unsubstituted alkyl group having from 1 to 6 carbon atoms or a substituted or unsubstituted aryl group having from 6 to 10 carbon atoms.

3. The injection molded article according to claim 1 , wherein the diamine unit comprises an m-xylylenediamine unit in an amount of 50% by mol or more.

4. The injection molded article according to claim 1 , wherein the polyamide compound comprises a linear aliphatic dicarboxylic acid unit comprising at least one selected from the group consisting of an adipic acid unit, a sebacic acid unit, and a 1,12-dodecanedicarboxylic acid unit, in an amount in total of 50% by mol or more.

5. The injection molded article according to claim 1 , wherein the polyamide compound comprises an aromatic dicarboxylic acid unit comprising at least one selected from the group consisting of an isophthalic acid unit, a terephthalic acid unit, and a 2,6-naphthalene dicarboxylic acid unit, in an amount in total of 50% by mol or more.

6. The injection molded article according to claim 1 , wherein the polyamide compound further comprises a ω-aminocarboxylic acid unit of formula (X) in an amount of from 0.1 to 49.9% by mol based on total constitutional units of the polyamide compound:

wherein p is an integer of from 2 to 18.

7. The injection molded article according to claim 6 , wherein the ω-aminocarboxylic acid unit comprises a 6-aminohexanoic acid unit, a 12-amino dodecanoic acid unit, or both in an amount in total of 50% by mol or more.

8. The injection molded article according to claim 1 , wherein the resin is at least one selected from the group consisting of a polyolefin, a polyester, a polyamide, an ethylene-vinyl alcohol copolymer, and a plant-derived resin.

9. The injection molded article according to claim 1 , wherein
the polyamide compound has a relative viscosity of 1.8 or more and 4.2 or less, and
a mass ratio of the polyamide compound/the resin is from 5/95 to 95/5.

10. The injection molded article according claim 1 , wherein
the polyamide compound has a relative viscosity of 1.01 or more and less than 1.8, and
a mass ratio of the polyamide compound/the resin is from 5/95 to 50/50.

11. A container obtained by processing the injection molded article according to claim 1 .

12. The container according to claim 11 , obtained by stretching blow molding.

13. The injection molded article according to claim 1 , wherein the polyamide compound is a crystalline polyamide compound.

Assignees

• Arakawa Shota
• Oda Takafumi
• Otaki Ryoji
• Ishii Kentaro
• Mitsubishi Gas Chemical Co

Inventors

• Arakawa Shota
• Oda Takafumi
• Otaki Ryoji
• Ishii Kentaro

Classifications

• C08L77/06 Primary

  Polyamides derived from polyamines and polycarboxylic acids (C08L77/10 takes precedence) · CPC title

• Y10T428/1397

  Single layer [continuous layer] · CPC title

• C08L23/00

  Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers · CPC title

• B29K2105/258

  Tubular · CPC title

• C08L29/04

  Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids · CPC title