초록 ▼

Antioxidant compositions as described which are the reaction products of a mixture of (a) at least one compound selected from compounds having the formula [Figure] (FORMULA I) wherein each Ar is an aromatic group, and R and R1 are each independently hydrogen, alkyl, substituted alkyl, oxyalkylene or

Antioxidant compositions as described which are the reaction products of a mixture of (a) at least one compound selected from compounds having the formula [Figure] (FORMULA I) wherein each Ar is an aromatic group, and R and R1 are each independently hydrogen, alkyl, substituted alkyl, oxyalkylene or －C(O)－R2－COOH groups wherein R2 is an alkylene or alkenylene group, with the proviso that at least one of the R and R1 groups must be hydrogen or a group containing at least one substituent reactive with an epoxy group, and Ar－NH－Ar－O－R3 (FORMULA II) wherein Ar is as defined above and R3 is hydrogen, or a substituted alkyl group containing at least one substituent reactive with an epoxy group, or －C(O)－R2－COOH wherein R2 is an alkylene or alkenylene group, and (b) at least one polyepoxide having at least 2 epoxy groups per molecule. Optionally, the mixture also may contain (c) one or more co-reactants for the polyepoxide such as acids, alcohols, phenols and amines, and the products obtained from these mixtures can be reacted further with acid anhydrides to modify the properties. These reaction products are useful as antioxidants in rubbers, plastics, oils, greases, etc., and they are particularly useful as stabilizers for rubbers and plastics since the rubbers and plastics containing such compositions present a high degree of resistance to the adverse effects of oxidative aging even when said rubbers and plastics are subjected to solvents which normally would extract a significant portion of conventional antioxidants.

대표청구항 ▼

A composition useful as an antioxidant which comprises the reaction product of a mixture of (a) at least one compound selected from compounds having the formula [Figure] (I) wherein each Ar is an aromatic group, and R and R1 are each independently hydrogen, alkyl, substituted alkyl, oxyalkylene or －

A composition useful as an antioxidant which comprises the reaction product of a mixture of (a) at least one compound selected from compounds having the formula [Figure] (I) wherein each Ar is an aromatic group, and R and R1 are each independently hydrogen, alkyl, substituted alkyl, oxyalkylene or －C(O)－R2－COOH groups wherein R2 is an alkylene or alkenylene group, with the proviso that at least one of the R and R1 groups must be hydrogen or a group containing at least one substituent reactive with an epoxy group, and Ar-NH-Ar-O-R3 (II) wherein Ar is as defined above and R3 is hydrogen, or a substituted alkyl group containing at least one substituent reactive with an epoxy group, or －C(O)－R2－COOH wherein R2 is an alkylene or alkenylene group, and (b) at least one polyepoxide having at least 2 epoxy groups per molecule.