Polyamide composition containing polyamide 4,10

Patent metadata

Field	Value
Publication number	US-9376563-B2
Application number	US-201013395195-A
Country	US
Kind code	B2
Filing date	Sep 16, 2010
Priority date	Sep 18, 2009
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

Polyamide composition comprising a first polyamide, characterized in that the composition further comprises polyamide 4,10 in an amount of at least 0.01 wt %, based on the total amount of polyamides in the composition. In a preferred embodiment of the invention, the first polyamide is an aliphatic polyamide chosen from the group of polyamide 6, polyamide 6,6 and polyamide 4,6.

First claim

The invention claimed is:

1. A polyamide composition comprising a blend of a first polyamide and a second polyamide, wherein
the first polyamide is selected from the group consisting of polyamide 6 and polyamide 6,6, and is present in the composition in an amount of at least 50 wt. %, based on total amount of polyamides in the composition, and wherein
the second polyamide consists of polyamide 4,10 and is present in the composition in an amount of 1 wt % to 50 wt %, based on total amount of polyamides in the composition, and wherein
the second polyamide is present in the composition in an amount sufficient to achieve a reduced fuel permeability rate which is more than an expected fuel permeability rate based on respective individual fuel permeability rates of the first and second polyamides when blended.

2. The polyamide composition according to claim 1 , wherein the amount of polyamide 4,10 present in the composition is at least 5 wt %, based on the total amount of polyamides in the composition.

3. The polyamide composition according to claim 1 , wherein the amount of polyamide 4,10 present in the composition is at least 10 wt %, based on the total amount of polyamides in the composition.

4. The polyamide composition according to claim 1 , wherein the amount of polyamide 4,10 present in the composition is at least 20 wt %, based on the total amount of polyamides in the composition.

5. The polyamide composition according to claim 1 , wherein the composition comprises at most 90 wt. % of the first polyamide.

6. The polyamide composition according to claim 1 , wherein the composition further comprises a third polyamide which is a polyamide other than the first and second polyamides and wherein the third polyamide is present in an amount of at least 5 wt. % based on total amount of polyamides in the composition.

7. The polyamide composition according to claim 6 , wherein the third polyamide is selected from the group consisting of polyamide-4,6, polyamide-11, polyamide-12, polyamide-MXD6, polyamide-6,I/6,T and polyamide-6,6/6,T.

8. The polyamide composition according to claim 6 , wherein the first and second polyamides are present in amounts which sum to at least 80 wt. %, and wherein the third polyamide is present in the composition in an amount of at least 10 wt. %, based on the total amount of polyamides in the composition.

Assignees

• Dullaert Konraad
• Van Der Vegte Eric Willem
• Tomic Katarina
• Stroeks Alexander Antonius Marie
• Dsm Ip Assets Bv

Inventors

• Dullaert Konraad
• Van Der Vegte Eric Willem
• Tomic Katarina
• Stroeks Alexander Antonius Marie

Classifications

• C08L77/02

  Polyamides derived from omega-amino carboxylic acids or from lactams thereof (C08L77/10 takes precedence) · CPC title

• C08L77/06

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

• C08L2205/02

  containing two or more polymers of the same C08L -group · CPC title

• C08L77/00 Primary

  Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain (of polyhydrazides C08L79/06; of polyamideimides or polyamide acids C08L79/08); Compositions of derivatives of such polymers · CPC title

• C08L2666/20

  Macromolecular compounds having nitrogen in the main chain according to C08L75/00 - C08L79/00; Derivatives thereof · CPC title