摘要:
A lubricant composition comprises as a lubricant base, an oil soluble polyalkylene glycol suitable for use as a lubricant in an industrial oil, grease or metal working fluid; and an additive comprising (1) alkylated phenyl-α-naphthylamine; and (2) 2,2,4-trialkyl-1,2-dihydroquinoline.
摘要:
The present invention relates to the use of amines and/or Mannich adducts as detergents and/or dispersants in fuel and lubricant compositions for direct-injection gasoline engines. The invention further relates to fuel and lubricant compositions which comprise at least one such Mannich adduct, and also a bisaminoalkylated Mannich adduct.
摘要:
A lubricating composition comprises one or more neutral saturated organic carboxylic acid esters and a minor proportion of (a) a compound containing the group -C-S-C-or -C-Se-C- and (b) an imidazole pyrazole or a 1,2,3-triazole which has no sulphur atom in its molecule. The esters have an acidity not exceeding 1 mg. KOH/gm. and are preferably di-esters of the formula R1OOC-R-COOR2 or complex esters of the formula R2OOC-R-COOR3OOC-R-COOR1, where R is a saturated aliphatic or alicyclic C2-8 hydrocarbon radical, R1 and R2 are alkyl or alkyl-substituted alicyclic radicals of at least 4 carbon atoms, and R3 is derived from the glycol or polyglycol HO-R3-OH. The radicals R1, R2 and R3 may contain ether oxygen linkages but the esters should contain no atoms other than C, H and O. Other suitable esters may be obtained by esterifying: a dicarboxylic acid (1 mol.) with (i) a glycol (2 mols.) and a monocarboxylic acid (2 mols.); (ii) a glycol (1 mol.), a monocarboxylic acid (1 mol.) and a monohydric alcohol (1 mol.); or (iii) a hydroxy monocarboxylic acid (2 mols.) and a monohydric alcohol (2 mols.); a glycol (1 mol.) with a hydroxy monocarboxylic acid (2 mols.) and monocarboxylic acid (2 mols.); a glycol or polyglycol (1 mol.) with a monocarboxylic acid (2 mols.); or a polyhydric alcohol such as trimethylol propane or pentaerythritol completely with a monocarboxylic acid. There are several specific examples of such esters. The ester, or mixture of esters, used should have a viscosity index above 100, a pour point below -40 DEG F., a boiling (or decomposition) point above 600 DEG F. and a flash point above 350 DEG F. The preferred additives (a) are (i) di-(hydroxyaryl) thioethers as described in Specification 757,219; (ii) dibenzothiazines or dibenzoselenazines, e.g. phenothiazine, phenoselenazine, phenothiazene-3, phenothiazine-5-oxide, 10,101-diphenothiazine, 6,7-benzophenothiazine, or 3,7 difluorophenothiazine; and (iii) dialkyl selenide having at least 12 carbon atoms, e.g. dilauryl or dicetyl selenide. The additives (b) are imidazoles, pyrazoles or 1,2,3-triazoles, e.g. imidazole (glyoxaline), benzimidazole, pyrazole, benzotriazole, 2-methyl benzimidazole, 3,5-dimethyl pyrazole or indazole. The composition preferably comprises 0.05 to 5% wt. of (a) and 0.01 to 2% wt. of (b). Optional ingredients mentioned are mineral oil (up to 20% wt.); polymerized esters of acrylic and alkyl-substituted acrylic acids; other polyesters, e.g. of propylene glycol and sebacic acid; amines; neutral organic phosphate and phosphite esters; and metal petroleum sulphonates. Several tests are described to show the effect of various combinations of the additives listed above on di-(2-ethyl hexyl) sebacate, di-(3,5,5-trimethyl hexyl) sebacate and blends thereof with polynonyl methacrylate, 2-ethylhexyl 3,5,5-trimethylhexyl sebacate, a complex ester, and one another. Some of the tested compositions also contained calcium petroleum sulphonate and tri-m-tolyl phosphate. According to the Provisional Specification, additive (b) may be any organic heterocyclic compound containing two or three nitrogen atoms and one -C=C- linkage in a 5-membered heterocyclic ring. Specifications 757,219, 757,241 and 793,115 are referred to.
摘要:
Provided is a water-soluble metalworking oil comprising a base oil (A) comprising oil-soluble polyalkylene glycol (A1), wherein a total content of water-soluble polyalkylene glycol and methoxypolyethylene glycol is less than 60% by mass based on the total amount excluding water.
摘要:
The present invention relates to the use of amines and/or Mannich adducts as detergents and/or dispersants in fuel and lubricant compositions for direct-injection gasoline engines. The invention further relates to fuel and lubricant compositions which comprise at least one such Mannich adduct, and also a bisaminoalkylated Mannich adduct.
摘要:
An object of the present invention is to provide a lubricating oil composition capable of improving oxidation stability by allowing a base number to remain, preserving seizure resistance, preventing generation of precipitation to be caused due to addition of a base, and inhibiting a lowering of traction coefficient. The lubricating oil composition for traction drive transmission includes (A) a base oil, (B) a phosphate ester-based compound, (C) an antioxidant, and (D) an amine represented by the following general formula (I) and/or an amine oxide of the amine. In the general formula (I), each of R1 and R2 independently represents a linear, branched, or cyclic alkyl group having 1 to 26 carbon atoms, a linear, branched, or cyclic alkenyl group having 1 to 26 carbon atoms, (R4—O)m—H, or (R5—O)n1—(R6—O)n2—H, and R1 and R2 may be the same as or different from each other; each of R4 to R6 independently represents an alkylene group having 2 to 3 carbon atoms; each of m, n1, and n2 independently represents a number of 2 to 25; and R3 represents a substituted or unsubstituted, linear, branched, or cyclic alkyl group having 1 to 26 carbon atoms, or a substituted or unsubstituted, linear, branched, or cyclic alkenyl group having 1 to 26 carbon atoms.
摘要:
A lubricant composition comprises a cycloaliphatic amine alkoxylate and a base oil selected from (a) a polyalkylene glycol; (b) a polyalphaolefin; (c) a naphthenic compound; and (d) combinations thereof; provided that the cycloaliphatic amine alkoxylate and the base oil are miscible. The lubricant may exhibit a viscosity change at 40° C. of less than 5 percent (%) after 13 days at 120° C. in dry air, indicating significant thermoxidative stability with minimal or no aromatic content, thereby enabling use of Groups II and III base oils, in particular, without reduced toxicity and/or quality concerns as compared with Group I base oil lubricants.
摘要:
The present invention relates to a brake fluid composition comprising a base fluid, a metal corrosion inhibitor, and an antioxidant where said base fluid comprises 70 to 80 wt. % of glycol ether, 18 to 28 wt. % of boric acid ester and 0.8 to 1.2 wt. % of silane-type stabilizer.
摘要:
A dispersant includes the reaction product of an amine and at least one equivalent of glycidyl ether where the amine is selected from a group consisting of aminoethylpiperazine, bis(2-(piperazin-1-yl)ethyl)amine, 4,4′-methylenebiscyclohexylamine, m-xylenediamine, diethylenetriamine, and triethylenetetramine and where the glycidyl ether has the structure (A), where R is selected from aromatic carbon chains, non-aromatic carbon chains and polyalkylene glycol groups. The dispersant is useful in a lubricant with a base oil for increasing soot dispersibility of the lubricant.
摘要:
A lubricant composition comprises a cycloaliphatic amine alkoxylate and a base oil selected from (a) a polyalkylene glycol; (b) a polyalphaolefin; (c) a naphthenic compound; and (d) combinations thereof; provided that the cycloaliphatic amine alkoxylate and the base oil are miscible. The lubricant may exhibit a viscosity change at 40° C. of less than 5 percent (%) after 13 days at 120° C. in dry air, indicating significant thermoxidative stability with minimal or no aromatic content, thereby enabling use of Groups II and III base oils, in particular, without reduced toxicity and/or quality concerns as compared with Group I base oil lubricants.