Synergistic stabilizing compositions for organic materials comprising a mixture of an arylamine and an alkylenediamine

• US 2,729,691 A
• Filed: 10/27/1951
• Issued: 01/03/1956
• Est. Priority Date: 10/27/1951
• Status: Expired due to Term

• Current Assignee: David O De Pree
• Original Assignee: David O De Pree
• Inventors: DE PREE DAVID O
• Application Number:
  US03/253,561
• Time in Patent Office: 1,529 Days
• US Class Current: 524/252
• CPC Class Codes: C08K 5/18 with aromatically bound amino groups
• CPC Class Codes: C08L 21/00 Compositions of unspecified rubbers
• CPC Class Codes: C10L 1/222 containing at least one carbon-to-nitrogen single bond C10L1/221 takes precedence
• CPC Class Codes: C10L 1/2222 (cyclo)aliphatic amines; polyamines (no macromolecular substituent 30C); quaternair ammonium compounds; carbamates C10L1/221 takes precedence
• CPC Class Codes: C10L 1/223 having at least one amino group bound to an aromatic carbon atom C10L1/221, C10L1/2227 take precedence
• CPC Class Codes: C10M 1/08 with additives
• CPC Class Codes: C10M 2215/04 having amino groups bound to acyclic or cycloaliphatic carbon atoms
• CPC Class Codes: C10M 2215/06 having amino groups bound to carbon atoms of six-membered aromatic rings
• CPC Class Codes: C10M 2215/062 containing hydroxy groups bound to the aromatic ring
• CPC Class Codes: C10M 2215/066 Arylene diamines
• CPC Class Codes: C10M 2215/26 Amines
• CPC Class Codes: Y10S 524/925 Natural rubber compositions having nonreactive materials, i.e. NRM, other than: carbon, silicon dioxide, glass titanium dioxide, water, hydrocarbon or halohydrocarbon

Claims

1. A COMPOSITION COMPRISING A SULFUR-VULCANIZABLE RUBBER NORMALLY TENDING TO DETERIORATE IN THE PRESENCE OF OXYGEN, AND IN AMOUNT BETWEEN ABOUT 0.1 AND 2.0 PARTS PER 100 PARTS OF SAID RUBBER, A SYNERGISTIC ANTIOXIDANT COMPOSITION CONSISTING ESSENTIALLY OF A NAPHTHYLAMINE RUBBER ANTIOXIDANT AND AN ALKYLENEDIAMINE, SAID ALKYLENDIAMINE BEING PRESENT IN AMOUNT BETWEEN ABOUT 30 AND 100 PARTS PER 100 PARTS OF SAID NAPHTHYLAMINE RUBBER ANTIOXIDANT.