Patent GB-1013222-A (GB)
Title: Synthetic lubricating agents and hydraulic liquids
IPC: C07D/
Filed: 1962-07-05
Abstract: A lubricant or hydraulic driving fluid for use in lubricating or driving a machine part comprises a melamine derivative of the formula <FORM:1013222/C4-C5/1> wherein R1, R2 and R3 represent C1- 18 alkyl, R4 represents hydrogen or C1- 18 alkyl, R5 represents hydrogen, C1- 18 alkyl, cyclohexyl or benzyl, R6 represents C1- 18 alkyl, cyclohexyl, C3- 8 alkoxyalkyl, morpholinoalkyl, pyridino, benzyl, naphthyl, or a phenyl group optionally substituted by halogens, C1- 12 alkyl groups, C1- 4 alkoxy groups or a phenoxy group, or R1 and R2 taken together, as well as R5 and R6 taken together, possibly with the inclusion of a further hetero atom, can be a saturated heterocyclic ring, alone or in admixture with highly purified mineral oils, synthetic lubricating oils of an ester basis, silicone oils, anti-oxidants, thickeners, agents lowering the solidification point, high-pressure additives and anti-corrosives. Specified anti-oxidants include diphenylamines, phenylnaphthylamines, phenylacenaphthenylamines, 4,41 - dinaphthylaminodiphenyl, thiazolyl - (2) - naphthylamines, N,N1 - diphenyl - para - phenylenediamine, N,N1 - dioctyl - para - phenylenediamine, N,N1 - dicyclohexyl - para - phenylenediamine, N - sec. - butyl - N1 - phenyl - para - phenylenediamine, N,N1 - bis - (g  - amino - propyl) - para - phenylenediamine, 2,4 - dimethyl - 6 - tert. - butylphenol, 2,6 - di - tert. - butyl - 4 - ethylphenol, 2,6 - bis - (11 - methylcyclohexyl) - 4 - methylphenol 2,6 - di - tert. - butyl - 4 - dimethyl - aminomethyl phenol, 2,21 - methylene - bis - (4-methyl - 6 - tert. - butyl phenol), 2,21 - thio - bis-(4 - methyl - 6 tert. - butyl phenol), 4,41 - di-hydroxy - 2,21 - dimethyl - 5,51 - di - tert. - butyldiphenyl sulphide and disulphide, 2,6 - bis - (21-hydroxy - 31 - tert. - butyl - 51 - methylbenzyl) - 4 - methylphenol, 2 - tert. - butyl - 1 - hydroxynaphthalene, 4,6 - di - tert. - butyl - 5 - hydroxyindane, 5 - hydroxyacenaphthene, butyl pyrocatechin, octyl gallate, hydroquinone, butylhydroxyanisole, hydroquinone monobenzyl ether, para - hydroxydiphenylamine, para - hydroxyoctyl aniline, para-hydroxy-N-g -aminopropyl aniline, phenothiazine, iminodibenzyl, 5 - ethyl - 10,10 - diphenyl - phenosilazine, 6 - methoxy: or 6 - ethoxy- or 6 - ethylamino-2,2,4 - trimethyl - 1,2 - dihydroquinoline or telomers thereof, tocopherol, 3-hydroxy-7,8-benzo - 1,2,3,4 - tetrahydroquinoline and didodecyl selenide.  Specified high pressure additives include phosphites (e.g. dibutyl phosphite), phosphates, sulphonated oil and barium or calcium mahogany sulphonates.  Specified anti-corrosives include sarcosines and benztriazoles. Thickeners include metal soaps, bentonite, phthalocyanines (e.g. copper phthalocyanine) and violanthrones. Silicone oils include methyl phenyl silicone. Ester lubricants include esters of ortho-silicic acid with 2-ethylhexanol, poly-2-ethylhexyl methacrylate, diesters of sebacic, azelaic and adipic acid with C6- 10 alkanols (e.g. 2-ethylhexyl sebacate and dinonyl adipate), trimethylolpropyl tricaprylate and trimethylolpropyl tripelargonate.  Specification 1,013,223 is referred to.