C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/472, 253/57,
C07C 323/58 (2006.01) C07C 323/52 (2006.01) C07D 279/22 (2006.01) C08K 5/372 (2006.01) C10M 135/22 (2006.01) C10M 135/24 (2006.01) C10M 135/26 (2006.01) C10M 135/36 (2006.01)
Patent
CA 1294275
Sulfur-containing compounds as antioxidants for lubricants and elastomers Abstract Compounds of the formula (I) Image (I) in which the R5 independently of one another are H, phenyl, naphthyl or C7-C30alkaryl and R1 is H, C1-C8alkyl, C7-C9aralkyl, C5-C12cycloalkyl, phenyl, naphthyl, C7-C30alkaryl or a group of the formula (II) -(CH2)a-SR3 (II) R2 is C7-C30alkaryl, phenyl, naphthyl or phenyl containing, in the para- position, an HO or C1-C18alkoxy group or a group of the formulae Image or Image or Image or R1 and R2, together with the nitrogen atom to which they are attached, are a radical of the formula (III) Image (III) R3 is a radical of the formulae -(CH2)b-COOR6 or -(CH2)2OCOR7, a is the number 1, 2 or 3 and b is the number 1 or 2, and R4 is phenyl or a group of the formula (II), the two R5s independently of one another are H, C1-C24alkyl, C5-C12cycloalkyl or C7-C9aralkyl, and R6 is H, C1-C18- alkyl or benzyl, R7 is C1-C14alkyl, phenyl or a group of the formula -(CH2)m-Y-(CH2)m-COO(CH2)2-S-(CH2)aN(R1)(R2) in which Y is -O- or -S-, a is the number 1, 2 or 3 and m is the number 1 or 2, B is a direct bond, -S-, -S-S- or a C1-C12alkylene radical, X in the formula (III) is a direct bond, -S- or a group of the formulae Image or Image in which a and R3 are as defined above, and R8 and R9 independently of one another are H, C1-C8alkyl or phenyl, are excellently suitable for use as antioxidants in lubricants, hydraulic fluids and elastomers.
563332
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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