Pale-colored flame-retardant polyamides

Patent metadata

Field	Value
Publication number	US-9388341-B2
Application number	US-201313847511-A
Country	US
Kind code	B2
Filing date	Mar 20, 2013
Priority date	Mar 21, 2012
Publication date	Jul 12, 2016
Grant date	Jul 12, 2016

Abstract

Thermoplastic molding compositions comprising
A) from 10 to 98% by weight of a thermoplastic polyamide, B) from 0.1 to 60% by weight of red phosphorus, C) from 0.5 to 20% by weight of a melamine compound, D) from 1 to 30% by weight of titanium dioxide in the rutile form, E) from 0 to 40% by weight of an impact modifier, and F) from 0 to 60% by weight of further additives, where the sum of the percentages by weight of components A) to F) is 100%.

First claim

The invention claimed is:

1. A thermoplastic molding composition comprising
A) from 10 to 98% by weight of a thermoplastic polyamide,
B) from 0.1 to 60% by weight of red phosphorus,
C) from 0.5 to 20% by weight of a melamine compound,
D) from 1 to 30% by weight of titanium dioxide in the rutile form,
E) from 0 to 40% by weight of an impact modifier, and
F) from 0 to 60% by weight of further additives,
where the sum of the percentages by weight of components A) to F) does not exceed 100%.

2. The thermoplastic molding composition according to claim 1 , comprising
A) from 20 to 96% by weight of the thermoplastic polyamide,
B) from 0.5 to 40% by weight of the red phosphorus,
C) from 1 to 20% by weight of the melamine compound,
D) from 1 to 25% by weight of the titanium dioxide,
E) from 1 to 30% by weight of the impact modifier, and
F) from 0 to 50% by weight of the further additives.

3. The thermoplastic molding composition according to claim 1 , in which component C) is composed of melamine polyphosphate or of melamine polyphosphate salts derived from a 1,3,5-triazine compound, or of a mixture of these.

4. The thermoplastic molding composition according to claim 1 , in which component D) has an uneven surface.

5. The thermoplastic molding composition according to claim 1 , in which the refractive index of component D) is n=2.75 (in accordance with DIN 51423).

6. The thermoplastic molding composition according to claim 1 , in which the BET surface area of component D) in accordance with DIN ISO 9277 is at least 5 m 2 /g.

7. The thermoplastic molding composition according to claim 1 , in which the Langmuir surface area of component D) is at least 14 m 2 /g (in accordance with DIN 66131 and 66134).

8. The thermoplastic molding composition according to claim 1 , in which component E) is composed of an ethylene copolymer which comprises from 0.1 to 20% by weight of functional monomers.

9. The thermoplastic molding composition according to claim 1 , where component E) comprises functional monomers selected from the group of the carboxylic acid, carboxylic anhydride, carboxamide, carboximide, amino, hydroxy, epoxy, urethane, or oxazoline groups, or a mixture of these.

10. A process wherein the thermoplastic molding compositions according to claim 1 undergoes a process for producing fibers, foils, and moldings.

11. A fiber, foil, or molding obtainable from the thermoplastic molding compositions according to claim 1 .

12. A thermoplastic molding composition comprising
A) from 10 to 98% by weight of a thermoplastic polyamide,
B) from 0.1 to 60% by weight of red phosphorus,
C) from 0.5 to 20% by weight of a melamine compound,
D) from 1 to 30% by weight of titanium dioxide in the rutile form,
E) from 0 to 40% by weight of an impact modifier, and
F) from 0 to 60% by weight of further additives,

where the sum of the percentages by weight of components A) to F) does not exceed 100%;
in which the Langmuir surface area of component D) is at least 14 m 2 /g (in accordance with DIN 66131 and 66134).

Assignees

• Basf Se

Inventors

• König Alexander
• Erdmann Torsten
• Roth Michael
• Uske Klaus
• Engelmann Jochen
• Ebenau Axel
• Klatt Martin

Classifications

• C09K21/14 Primary

  Macromolecular materials · CPC title

• C08L77/00

  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

• C08K5/34928

  Salts · CPC title

• B01F7/164

  Operations & Transport · mapped topic

• B01F3/1221

  Operations & Transport · mapped topic