摘要:
A bridged alkaline earth metal alkylphenate having reduced monomeric alkylphenol is prepared by reacting (a) a 4-alkylphenol, unsubstituted at the ortho positions, (b) an alkaline earth metal oxide or hydroxide, (c) a bridging agent comprising sulfur or a carbonyl compound of 1 to about 6, or to 4 or to 2, carbon atoms, and (d) a 2,6-dialkylphenol. The amount of the 2,6-dialkylphenol is 0.05 to 3 moles per 1 mole of the 4-alkylphenol; if there is a molar excess of the 2,6-dialkylphenol, then the excess is added after initial reaction.
摘要:
The present invention relates to a lubricant composition for a marine engine, in particular for a four-stroke or two-stroke marine engine, comprising at least one base oil, at least one alkoxylated fatty amine, at least one hydrogenated styrene-isoprene copolymer and at least one detergent.
摘要:
A cyclic compound comprising m units of the formula Ia. 1 and n units of the formula (Ib) 2 joined together to form a ring, wherein Y and Y2 are divalent bridging groups which may be the same or different in each unit; R0 is H or (C1-C6) alkyl or is a metal or ammonium cation; R5 is H or (C1-C60) alkyl or OH group; j is 1 or 2; R3 is hydrogen, a hydrocarbyl or a hetero-substituted hydrocarbyl group; each of R1, R2 and R4, which may be the same or different, is hydroxyl, hydrogen, hydrocarbyl or hetero-substituted hydrocarbyl, with the provisos that i) at least one of R1, R2, R4 is hydroxyl, and mnulln is 4 to 20, m is 1-8 and n is at least 3, and ii) in formula Ia at least one OH group is in the meta or para position to the COOR0 group and/or at least one R5 group is OH.
摘要翻译:包含m个式Ia化合物的环状化合物。 和式(Ib)的n个单元连接在一起形成环,其中Y和Y2是每个单元可以相同或不同的二价桥连基团; R 0是H或(C 1 -C 6)烷基或是金属或铵阳离子; R5是H或(C1-C60)烷基或OH基; j为1或2; R3是氢,烃基或杂取代的烃基; R 1,R 2和R 4各自可以相同或不同,是羟基,氢,烃基或杂取代的烃基,条件是i)R 1,R 2,R 4中的至少一个是羟基,m + n 为4至20,m为1-8且n为至少3,和ii)在式Ia中,至少一个OH基位于COOR0基团的间位或对位,和/或至少一个R 5基团为OH。
摘要:
A fluid composition suitable for use as an aircraft hydraulic fluid is disclosed. The fluid composition comprises a fire resistant phosphate ester base stock comprising between about 10% and about 100% by weight of a trialkyl phosphate, between about 0% and about 70% by weight of a dialkyl aryl phosphate, and from about 0% to about 25% by weight of an alkyl diaryl phosphate, with the proviso that the sum of the proportionate amount of each base stock component must equal 100%. The alkyl substituents of the trialkyl phosphate, the dialkyl aryl phosphate, and the alkyl diaryl phosphate contain between 3 and 8 carbon atoms, preferably between 4 and 8 carbon atoms, more preferably between 4 and 5 carbon atoms, and are bonded to the phosphate moiety via a primary carbon. It is still further preferred that the alkyl substituents of the trialkyl phosphate, the dialkyl aryl phosphate, and the alkyl diaryl phosphate are isoalkyl groups. The fluid composition further comprises an acid scavenger, an anti-erosion additive, a viscosity index improver, and an antioxidant. A novel additive combination comprises a high molecular weight butyl/hexyl methacrylate viscos ity index improver, a perfluoroalkylsulfonate anti-erosion additive, a 3,4-epoxycyclohexanecarboxylate or a diepoxide acid scavenger, a di(alkylphenyl)amine, and a phenolic antioxidant comprising a mixture of a 2,4,6-trialkylphenol and a hindered polyphenol compound selected from the group consisting of bis(3,5-dialkyl-4-hydroxyaryl)methane, 1,3,5-trialkyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxyaryl)benzene and mixtures thereof. Preferably, the fluid composition further comprises a benzotriazole derivative as a copper corrosion inhibitor, and a 4,5-dihydroimidazole derivative, as an iron cor rosion inhibitor and to enhance the stability of the fluid.
摘要:
A tetraoximino derivative of a bisphenol, for example the 3,5,3.sup.1,5.sup.1 -tetraoximino methyl derivative of 2,2-bis(4-hydroxyphenyl) propane, can be coated onto a metal surface to give improved corrosion resistance. The metal surface can be zinc coated steel or zinc phosphated steel. The tetraoximino derivative can be the only coating material or can be incorporated into a surface coating composition such as paint.
摘要:
Hydrocracked lubricating oils are effectively stabilized against deterioration caused by light by the inclusion of at least one of certain dihydroxy-diphenyl components. Such components, e.g., 4,4'-bis(2,6-di-tertiary butyl phenol), provide outstanding inhibition to sunlight deterioration.
摘要:
THE PRESENCE OF ALKYLATED POLYHDROXY BENZENOID COMHAVING FROM 1 TO 4 ALKYL GROUPS OF 6 TO 100 CARBON ATOMS, PREFERABLY 6 TO 30 CARBON ATOMS, AND AT LEAST 2 HYDROXY GRUOPS, SUCH COMPOUNDS BEING PREPARED FROM THE APPROPRIATE POLYHYDROXY COMPOUND AND OLEFIN IN THE PRESENCE OF A BORON TRIFLUORIDE CATALYST, PROVIDE HIGH TEMPERATURE OXIDATION PROTECTION TO LUBRICATING OILS AND OTHER ORGANIC MATERIALS.
摘要:
As anti-oxidants for gasoline, kerosene, furnace oils, mineral lubricating oils and greases, use is made of polynuclear phenols in which an aromatic hydrocarbon group having condensed benzene nuclei is linked to one or more 3, 5-dialkyl-4-hydroxybenzyl substituents attached directly to the ring system. The specified products include 9, 10-bis (3, 5-di-tert.-butyl-4-hydroxybenzyl) anthracene, 1, 4-bis(3, 5-diisopropyl-4-hydroxybenzyl) naphthalene, alpha-3, 5-diisopropyl-4-hydroxybenzyl-naphthalene, 1-methyl-3 (3-methyl-5-tert.-butyl-4-hydroxybenzyl)naphthalene, 1,4,5,8- tetra(3,5-di-tert. butyl-4-hydroxybenzyl) naphthalene, 9,10-bis(3-methyl-5-tert.-hexyl-4-hydroxybenzyl) phenanthrene, 1,4,5,8,9,10-hexa (3,5-diisopropyl-4-hydroxybenzyl) anthracene, and 5, 6, 11, 12-tetra (3,5-di-tert.-butyl-4-hydroxybenzyl) naphthacene. Products derived from chrysene, pyrene, benzanthracene, pentacene, dibenzanthracene and coronene are also specified. A synergistic effort is produced if the antioxidants described above are used in association with sulphur compounds of the following types. (1) Compounds of the type R1-Sx-R2, where X is a whole number and R1 and R2 are similar or dissimilar organic groups bound to Sx by means of carbon atoms, e.g. compounds of the foumula where R and R1 are similar or dissimilar hydrocarbon groups of 6-20 carbon atoms and n is 1-6, e.g. dilaurylthio-dipropionate, or sulphides of the types R1-CH2-CH2-Sx-R2 or R1-CH2-CH2- Sx-CH2-CH2 -R2, where X is a whole number and R1 and R2 are similar or dissimilar aliphatic or aromatic groups. (2) Compounds of the general formula where M is a metal of Group II of the Periodic System and R1 and R2 are hydrocarbon groups of 1-6 carbon atoms. (3) Trialkyl trithiophosphites having 6-20 carbon atoms in the alkyl groups. (4) Polymeric products su:h as polyalkoxyalkyl sulphides (-R1-O-R1-S-)x,polyalkoxy=alkoxyalkyl sulphides (-R1-O-R2-O-R1-S-)x and polyhydroxyalkyl sulphides (-R1 (OH)-S-)x, such products being obtainable by reacting an unsaturated ether, e.g. diallyl ether, with hydrogen sulphide.ALSO:As anti-oxidants for polyolefines, synthetic rubbers and liquid ethylenically unsaturated monomers, use is made of polynuclear phenols in which an aromatic hydrocarbon group having condensed benzene nuclei is linked to a 3,5-dialkyl-4-hydroxybenzyl substituent attached directly to the ring system. The aromatic hydrocarbon group preferably contains 2-6 benzene nuclei and may be substituted with alkyl groups preferably having not more than 4 carbon atoms. The alkyl groups in the 3,5-dialkyl-4-hydroxybenzyl residue preferably contain not more than 8 carbon atoms. The specified products includes 9,10-bis(3,5-di-tert.-butyl-4-hydroxybenzyl) anthracene, 1,4-bis(3,5-diisopropyl-4-hydroxybenzyl) naphthalene, alpha - 3,5 - diisopropyl - 4 - hydroxybenzyl - naphthalene, 1-methyl-3(3-methyl-5-tert.-butyl-4-hydroxybenzyl) naphthalene, 1,4,5,8-tetra(3,5-ditert.-butyl-4-hydroxybenzyl) naphthalene, 9,10-bis(3-methyl-5-tert.-hexyl-4-hydroxybenzyl) phenanthrene, 1,4,5,8,9,10-hexa(3,5-diisopropyl-4-hydroxybenzyl) anthracene, and 5,6,11,12-tetra-(3,5-di-tert.-butyl-4-hydroxybenzyl) naphthacene. Products derived from chrysene, pyrene, benzanthracene, pentacene, dibenzanthracene and coronene are also specified. A number of materials to which the phenols may be applied are specified. The proportion of antioxidant may be 0,0001-10% by weight. A synergistic effect is produced if the antioxidants described above are used in association with sulphur compounds of the following types. (1) Compounds of the type R1-Sx-R2, where X is a whole number and R1 and R2 are similar or dissimilar organic groups bound to Sx by means of carbon atoms, e.g. compounds of the formula where R and R1 are similar or dissimilar hydro-carbon groups of 6-20 carbon atoms and n is 1-6, e.g. dilaurylthiodipropionate, or sulphides of the types R1-CH2-CH2-Sx-R2 or R1-CH2-CH2-Sx-CH2-CH2 -R2, where X is a whole number and R1 and R2 are similar or dissimilar aliphatic or aromatic groups. (2) Compounds of the general formula where M is a metal of Group II of the periodic system and R1 and R2 are hydrocarbon groups of 1-6 carbon atoms. (3) Trialkyl trithiophosphites having 6-20 carbon atoms in the alkyl groups. (4) Polymeric products such as polyalkoxyalkyl sulphides (-R1-O-R1-S-)x, polyalkoxyalkoxyalkyl sulphides (-R1-O-R2-O-R1-S-)x and polyhydroxyalkyl sulphides (-R1(OH)-S-)x, such products being obtainable by reacting an unsaturated ether, e.g. diallyl ether, with hydrogen sulphide. Rubber and plastic compositions treated according to the invention may contain pigments, fillers, antiozonants and curing agents.ALSO:The invention comprises polynuclear phenols in which an aromatic hydrocarbon group having condensed benzene nuclei is linked to a 3,5-dialkyl-4-hydroxybenzyl substituent attached directly to the ring system. The aromatic hydrocarbon group preferably contains 2-6 benzene nuclei and may be substituted with alkyl groups preferably having not more than 4 carbon atmos. The alkyl groups in the 3,5-dialkyl-4-hydroxybenzyl residue preferably contain not more than 8 carbon atoms. The products may be prepared by condensing an aromatic hydrocarbon having condensed benzene nuclei with a 3,5-dialkyl-4-hydroxybenzyl alcohol in the presence of a Friedel-Crafts catalyst or sulphuric acid, preferably in the presence of a dehydrating agent, e.g. phosphorus pentoxide, and optionally in the presence of an inert solvent, a number of which are specified. The reaction may be effected at -15-100 DEG C., preferably at atmospheric pressure. The specified Friedel-Crafts catalysts include zirconium tetrachloride, tantalum pentachloride, beryllium chloride, titanium tetrachloride and tin tetrachloride. The specified products include 9,10-bis(3,5-di-tert.-butyl-4-hydroxybenzyl)anthracene, 1,4-bis(3,5- diisoprophyl-4- hydroxybenzyl-naphthalene, alpha-3,5-diisopropyl- 4-hydroxybenzyl-naphthalene, 1-methyl- 3(3-methyl- 5-tert.-butyl- 4-hydroxybenzyl)-naphthalene, 1,4,58- tetra(3,5-di-tert.-butyl- 4-hydroxybenzyl)naphthalene, 9,10-bis(3-methyl- 5-tert.-hexyl- 4-hydroxybenzyl) phenanthrene, 1,4,5,8,9,10- hexa(3,5-diisopropyl-4-hydroxybenzyl)anthracene, and 5,6,11, 12-tetra(3,5- di-tert.- butyl-4- hydroxybenzyl) naphthacene. Products derived from chrysene, pyrene, benzanthracene, pentacene, dibenzanthracene and coronene are also specified. The products are useful as antioxidants and for protecting materials against thermal and ultra-violet degradation. Materials to which the products may be applied include polyolefines, synthetic rubbers and liquid ethylenically unsaturated monomers, a number of each of which are specified, and also natural rubber, gasoline, kerosine, furnace oils, lubricating oils and greases. A synergistic effect is produced if the antioxidants described above are used in association with certain sulphur compounds (see Groups III and IV(a)).
摘要:
An object of the present invention is to provide an ester-based lubricating base oil for a fluid bearing that has a high viscosity index and excellent evaporation resistance, hydrolytic stability, and low-temperature fluidity. The present invention relates to a lubricating base oil for a fluid bearing containing a compound represented by general formula (1): wherein R1 represents a linear C2-C16 alkyl group, m represents an integer of 2 to 10, and n represents an integer of 4 to 14.