Patent GB-984013-A (GB)
Title: Stabilisation of organic materials
IPC: C07D277/22
Filed: 1961-05-02
Abstract: Aldehydes such as heptaldehyde; perfluorohydrocarbons; and esters such as dihexyl azelate, di(2 - ethylhexyl) azelate, di(3,5,5 - trimethylhexyl) glutarate, di(3,5,5 - trimethylpentyl) glutarate, di(2 - ethylhexyl) pimelate, di(2-ethylhexyl) adipate, diisoamyl adipate, triamyl tricarballylate, pentaerythritol tetracaproate, dipropylene glycol dipelargonate and 1,5 - pentanediol - di(2 - ethyl - hexanoate) are stabilized against oxidative deterioration by the addition of a compound of the formula <FORM:0984013/C2/1> wherein R1 represents methyl and R2 represents hydrogen or R1 and R2 taken together represent the grouping -CH=CH-CH=CH- and X represents phenyl, methoxyphenyl, ethoxyphenyl, meta- or para-hydroxyphenyl, naphthyl, acenaphthyl or thiazolyl of the formula <FORM:0984013/C2/2> or a compound of the formula <FORM:0984013/C2/3> wherein R3 represents phenyl, R4 represents hydrogen and X represents phenyl, methoxyphenyl, ethoxyphenyl, naphthyl, acenaphthyl or thiazolyl of the formula <FORM:0984013/C2/4>ALSO:Polyolefins such as polyethylenes, polypropylenes and polystyrene; polyhaloolefins such as polyvinylchloride; polyamides such as nylon:  natural rubber; neoprene, nitrile, butyl, polyisoprene and styrene-butadiene rubbers; polyalkylene oxides such as polyisopropylene oxide, polyisopropylene oxide diether and polyisopropylene oxide diester; silicones such as methyl silicone and methylphenyl silicone; and esters of silicic acid such as tetraisooctyl silicate are stabilized against oxidative deterioration by the addition of a compound of the formula <FORM:0984013/C3/1> wherein R1 represents methyl and R2 represents hydrogen or R1 and R2 taken together represent the grouping -CH=CH-CH=CH-and X represents phenyl, methoxyphenyl, ethoxyphenyl, meta- or para-hydroxyphenyl, naphthyl, acenaphthyl or thiazolyl of the formula <FORM:0984013/C3/2> or a compound of the formula <FORM:0984013/C3/3> wherein R3 represents phenyl, R4 represents hydrogen and X represents phenyl, methoxyphenyl, ethoxyphenyl, naphthyl, acenaphthyl or thiazolyl of the formula <FORM:0984013/C3/4>ALSO:Fat, lard, beef tallow; linseed, menhaden, cod liver, castor, olive, rapeseed, coconut, palm, corn, sesame, peanut and cotton seed oils; paraffin, wax; synthetic lubricating oils, e.g. aliphatic esters (including di-, tri-, and hindered esters), polyalkylene oxides and esters and ethers thereof, silicones, silicate esters, and perfluorohydrocarbons; tetrahydronaphthalene and cyclohexene are stabilized against oxidative deterioration by the addition of a compound of the formula <FORM:0984013/C4-C5/1> wherein R1 represents methyl and R2 represents hydrogen or R1 and R2 taken together represent the grouping -CH=CH-CH=CH- and X represents phenyl, methoxyphenyl, ethoxyphenyl, meta- or para-hydroxyphenyl, naphthyl, acenaphthyl or thiazolyl of the formula <FORM:0984013/C4-C5/2> or a compound of the formula <FORM:0984013/C4-C5/3> wherein R3 represents phenyl, R4 represents hydrogen and X represents phenyl, methoxyphenyl, ethoxyphenyl, naphthyl, acenaphthyl or thiazolyl of the formula <FORM:0984013/C4-C5/4>ALSO:Butter is stabilized against oxidative deterioration by the addition of a compound of the formula: <FORM:0984013/A1-A3/1> wherein R1 represents methyl and R2 represents hydroge, or R1 and R2 taken together represent the grouping -CH=CH-CH=CH-, and X represents phenyl, methoxyphenyl, ethoxyphenyl, meta- or parahydroxyphenyl, naphthyl, acenaphthyl or thiazolyl of the formula:-  <FORM:0984013/A1-A3/2> or a compound of the formula:- <FORM:0984013/A1-A3/3> wherein R3 represents phenyl, R4 represents hydrogen and X represents phenyl, methoxyphenyl, ethoxyphenyl, naphthyl, acenaphthyl or thiazolyl of the formula:- <FORM:0984013/A1-A3/4>