Polyamides with phosphorous and al-phosphonates

Patent metadata

Field	Value
Publication number	US-11859068-B2
Application number	US-201816625507-A
Country	US
Kind code	B2
Filing date	Jun 21, 2018
Priority date	Jun 22, 2017
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

Abstract

Described herein are thermoplastic molding materials including components:
A) 10 to 98.5 wt % of a thermoplastic polyamide,
B) 1 to 20 wt % of red phosphorus,
C) 0.5 to 15 wt % of an aluminum salt of phosphonic acid,
D) 0 to 55 wt % of a fibrous or particulate filler or mixtures thereof,
E) 0 to 30 wt % of further additives,
wherein the weight percentages of the components A) to E) sum to 100%.

First claim

The invention claimed is:

1. A thermoplastic molding material comprising components:
A) 10 to 98.5 wt % of a thermoplastic polyamide,
B) 1 to 20 wt % of red phosphorus,
C) 0.5 to 15 wt % of an aluminum salt of phosphonic acid,
D) 0 to 55 wt % of a fibrous or particulate filler or mixtures thereof, and
E) 0 to 30 wt % of further additives,
wherein the weight percentages of the components A) to E) sum to 100%.

2. The thermoplastic molding material according to claim 1 , comprising the components:
A) 20 to 97.5 wt % of the thermoplastic polyamide,
B) 1 to 10 wt % of the red phosphorus,
C) 0.5 to 15 wt % of the aluminum salt of phosphonic acid,
D) 1 to 50 wt % of the fibrous or particulate filler or mixtures thereof,
E) 0 to 25 wt % of the further additives,
wherein the weight percentages of the components A) to E) sum to 100%.

3. The thermoplastic molding material according to claim 1 in which the component C) is
Al 2 (HPO 3 ) 3 ·x (H 2 O) q   (formula I)

where q is in the range of 0 to 4

or
Al 2 M a (HPO 3 ) b (OH) c x (H 2 O) d   (formula II)

where
M represents alkali metal ions
a is in the range of 0.01 to 1.5
b is in the range of 2.63 to 3.5
c is in the range of 0 to 2
d is in the range of 0 to 4

or
Al 2 (HPO 3 ) e (H 2 PO 3 ) f x (H 2 O) g   (formula III)

where
e is in the range of 2 to 2.99
f is in the range of 2 to 0.01
g is in the range of 0 to 4

or
mixtures of aluminum phosphites and aluminum oxide of the type Al 2 (HPO 3 ) 3 x 0.1 to 30 Al 2 O 3 x 0 to 50 H 2 O   (formula IV)

or
primary aluminum phosphonate[Al(H 2 PO 3 ) 3 ]   (formula V)

or
basic aluminum phosphonate [Al(OH)(H 2 PO 3 ) x· 2H 2 O]   (formula VI)

or mixtures thereof.

4. The thermoplastic molding material according to claim 1 containing as the component C) compounds of formula II in which M represents at least one of sodium and potassium.

5. The thermoplastic molding material according to claim 1 in which the component C) is
secondary aluminum phosphonate [Al2(HPO 3 ) 3 ]   (formula Ia)

or
aluminum phosphonate tetrahydrate [Al 2 (HPO 3 ) 3 ·4H 2 O]   (formula Ib)

or mixtures thereof.

6. The thermoplastic molding material according to claim 1 in which the component C) is constructed from mixtures of aluminum phosphites and aluminum oxide of the type Al 2 (HPO 3 ) 3 x 0.2 to 20 Al 2 O 3 *0 to 50 H 2 O (formula IV).

7. The thermoplastic molding material according claim 1 in which the component C) is constructed from compounds of formula II in which a is in the range of 0.15 to 0.4 and b is in the range of 2.80 to 3 and c is in the range of 0.01 to 0.1.

8. The thermoplastic molding material according to claim 1 in which the component C) is selected from compounds of formula III in which e is in the range of 2.834 to 2.99 and f is in the range of 0.332 to 0.03 and g is in the range of 0.01 to 0.1.

9. A method for producing fibers, films, and moldings, the method comprising using the thermoplastic molding material according to claim 1 for the production of fibers, films and moldings.

10. A fiber, film or molding obtainable from the thermoplastic molding material according to claim 1 .

Assignees

• Basf Se

Inventors

• Roth Michael
• Heussler Michaela
• Uske Klaus
• Minges Christoph

Classifications

• C08K3/02 Primary

  Elements · CPC title

• C08J5/18

  Manufacture of films or sheets · CPC title

• C08K3/32 Primary

  Phosphorus-containing compounds · CPC title

• C08K7/02

  Fibres or whiskers · CPC title

• C08L77/06

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