STABILIZED POLYAMIDE COMPOSITIONS

• US 3,860,558 A
• Filed: 12/07/1970
• Issued: 01/14/1975
• Est. Priority Date: 12/07/1970
• Status: Expired due to Term

• Current Assignee: Peter Klemchuk
• Original Assignee: Peter Klemchuk
• Inventors: Klemchuk, Peter
• Primary Examiner(s): Czaja, Donald E.
• Assistant Examiner(s): White, R. A.
• Application Number:
  US05/095,912
• Time in Patent Office: 1,499 Days
• Field of Search: 260/45.7P,45.8N,45.9R,45.9NC,45.75R
• US Class Current: 524/100
• CPC Class Codes: C08K 13/02 Organic and inorganic ingredients
• CPC Class Codes: C08K 3/32 Phosphorus-containing compounds
• CPC Class Codes: C08K 5/13 Phenols; Phenolates
• CPC Class Codes: C08L 77/00 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

Abstract

Heat stabilized synthetic polyamide compositions are prepared by incorporating therein a mixture of a phenolic antioxidant and metal hypophosphite. A typical embodiment includes polyamides which are stabilized with 1,2-bis(3-(3,5-di-t-butyl-4hydroxyphenyl)propionamido)ethane and sodium hypophosphite.

Claims

2. The composition of matter of claim 1 wherein the metal hypophosphite is sodium hypophosphite or potassium hypophosphite, wherein the concentration of said hypophosphite is in the range of about 0.05 to about 0.15 weight percent and the concentration of said phenolic antioxidant is in the range of about 0.05 to about 0.2 weight percent.

3. The composition of matter of claim 1 wherein the hindered phenolic compound is 1,6-bis(3-(3,5-di-t-butyl-4-hydroxyphenyl)propionamido)hexane.

4. The composition of matter of claim 1 wherein the hindered phenolic compound is 1,2-bis(3-(3,5-di-t-butyl-4-hydroxyphenyl)-propionamido)ethane.

5. The composition of matter of claim 1 wherein the hindered phenolic compound is 1,4-bis(3-(3,5-di-t-butyl-4-hydroxyphenyl)-propionamidomethyl)cyclohexane.

6. The composition of matter of claim 1 wherein the hindered phenolic compound is N,N'"'"''"'"'-bis(3-(3,5-di-t-butyl-4-hydroxyphenyl)propionyl)piperazine.

7. The composition of matter of claim 1 wherein the hindered phenolic compound is 1,6-bis(3-(3-methyl-4-hydroxy-5-t-butylphenyl)-propionamido)hexane.

8. The composition of matter of claim 1 wherein the hindered phenolic compound is 1,2-bis(3-methyl-4-hydroxy-5-t-butylphenyl)-propionamido)ethane.

9. The compositions of matter of claim 1 wherein the hindered phenolic compound is N,N'"'"''"'"'-bis(3,5-di-t-butyl-4-hydroxybenzyl)adipamide.

10. The composition of matter of claim 1 wherein the hindered phenolic compound is bis(N-(3,5-di-t-butyl-4-hydroxybenzyl)propionamide)sulfide.