摘要:
An additive concentrate composition having a TBN greater than 300 suitable for incorporation into a finished lubricating oil composition comprising:(I') a first alkaline earth metal sulphurised hydrocarbyl phenate, and(II') a lubricating oil,the first alkaline earth metal sulphurised hydrocarbyl phenate (I') being obtained by overbasing a second alkaline earth metal sulphurised hydrocarbyl phenate containing at least 4% by weight sulphur, or its precursors, in the presence of the lubricating oil (II'), the amount of the lubricating oil (II') being such that the ratio of the weight of the additive concentrate to the weight of the second alkaline earth metal sulphurised hydrocarbyl phenate, or its precursors, is at least 3.0.
摘要:
A process for the production of a lubricating oil additive concentrate comprises reacting at elevated temperature the following components:component (A) a defined acidcomponent (B)--a calcium base added either in a single addition or in a plurality of additions at intermediate points during the reaction,component (C)--at least one compound which is (i) water, (ii) a polyhydric alcohol having 2 to 4 carbon atoms, (iii) a di- (C.sub.3 or C.sub.4) glycol, (iv) a tri-(C.sub.2 -C.sub.4) glycol, (v) a mono- or poly-alkylene glycol alkyl ether of the formula (I)R(OR.sup.1).sub.x OR.sup.2 (I) wherein R is a C.sub.1 to C.sub.6 alkyl group, R.sup.1 is an alkylene group, R.sup.2 is hydrogen or a C.sub.1 to C.sub.6 alkyl group and x is an integer from 1 to 6, (vi) a C.sub.1 to C.sub.20 monohydric alcohol, (vii) a C.sub.1 to C.sub.20 ketone, (viii) a C.sub.1 to C.sub.10 carboxylic acid ester, or (ix) a C.sub.1 to C.sub.20 ether, optionally,component (D)--a lubricating oil,component (E)--carbon dioxide added subsequent to the, or each, addition of component (B), andcomponent (F)--a compound of formula IIR.sup.3 X (II) wherein X is a halogen and R.sup.3 is an alkyl, alkenyl or alkaryl group or halo derivative thereof.
摘要:
A process for the production of a lubricating oil additive concentrate having a TBN greater than 300 which process comprises reactingcomponent (A) a defined derivative of phenolcomponent (B) an alkaline earth metal base added either in a single addition of in a plurality of additions at intermediate points during the reaction,component (C) at least one compound which is (i) water, (ii) a C.sub.1 to C.sub.10 monohydric alcohol, (iii) a C.sub.1 to C.sub.20 ketone, (iv) a C.sub.1 to C.sub.10 carboxylic acid ester or (v) a C.sub.1 to C.sub.20 ether,component (D) a lubricating oil,component (E) carbon dioxide added subsequent to the, or each, addition of component (B),component (F) a defined carboxylic acid or derivativecomponent (G) at least one compound which is (i) an inorganic halide or (ii) an ammonium alkanoate or a mono-, di-, tri, or tetra-alkyl ammonium formate or alkanoate provided that, when component (G) is (ii), component (F) is not an acid chloride,the weight ratios of all components being such as to produce a concentrate having a TBN greater than 300.
摘要:
A process for the production of a lubricating oil additive concentrate having a TBN greater than 300 which process comprises reacting at elevated temperaturecomponent (A) a defined mixture selected from defined sulphurized or non-sulphurized acids or calcium salts thereof,component (B) an alkaline earth metal base added either in a single addition or in a plurality of additions at intermediate points during the reaction,component (C) at least one compound which is (i) water, (ii) a polyhydric alcohol having 2 to 4 carbon atoms, (iii) a di- (C.sub.3 or C.sub.4) glycol, (iv) a tri-(C.sub.2 -C.sub.4) glycol, (v) a mono- or poly-alkylene glycol alkyl ether of the formula (I)R(OR.sup.1).sub.x OR.sup.2 (I)wherein R is a C.sub.1 to C.sub.6 alkyl group, R.sup.1 is an alkylene group, R.sup.2 is hydrogen or a C.sub.1 to C.sub.6 alkyl group and x is an integer from 1 to 6, (vi) a C.sub.1 to C.sub.20 monohydric alcohol, (vii) a C.sub.1 to C.sub.20 ketone, (viii) a C.sub.1 to C.sub.10 carboxylic acid ester, or (ix) a C.sub.1 to C.sub.20 ether,component (D) a lubricating oil,component (E) carbon dioxide added subsequent to the, or each, addition of component (B),component (F) a defined carboxylic acid or derivative,component (G) at least one compound which is (i) an inorganic halide or (ii) an ammonium alkanoate or a mono-, di-, tri- or tetra-alkyl ammonium formate or alkanoate provided that when component (G) is (ii), component (F) is not an acid chloride,the weight ratios of all components being such as to produce a concentrate having a TBN greater than 300.
摘要:
A lubricating oil composition suitable for use in a low or medium speed diesel engine comprising a fuel oil with a residual oil content is characterised in that the lubricating oil composition further comprises a hydrocarbyl substituted amine or polyamine. The effect of such an amine is to reduce deposits due to the residual oil. A method of reducing deposits in a low or medium speed diesel engine is also disclosed.
摘要:
A process for producing a dispersant/VI improver for use in finished lubricating oil compositions comprises reacting in a normally liquid substantially inert organic solvent (a) a copolymer of an olefin and a monomer having the structure (I), wherein X and X.sup.1 are the same or different provided that at least one of X and X.sup.1 is such that the copolymer can function as carboxylic acylating agent, (b) a succinimide, and (c) a primary or secondary amine or a mixture thereof. Preferred copolymers comprise maleic anhydride as a comonomer. In a preferred embodiment of the invention, the amine is a monoamine, and a polyamine is also added; the monoamine and polyamine are added to the reaction medium prior to addition of the succinimide.
摘要:
A process for the production of a lubricating oil additive concentrate having a TBN greater than 300 comprises reacting at elevated temperaturecomponent (A) a defined salicylic acid derivative,component (B) an alkaline earth metal base added either in a single addition or in a plurality of additions at internediate points during the reaction,component (C) at least one compound which is (i) water, (ii) a polyhydric alcohol having 2 to 4 carbon atoms, (iii) a di- (C.sub.3 or C.sub.4) glycol, (iv) a tri- (C.sub.2 -C.sub.4) glycol, (iv) a mono- or poly-alkylene glycol alkyl ether of the formula (I)R(OR.sup.1).sub.x OR.sup.2 (I)wherein R is a C.sub.1 to C.sub.6 alkyl group, R.sup.1 is an alkylene group R.sup.2 is hydrogen or a C.sub.1 to C.sub.6 alkyl group and x is an integer from 1 to 6, (vi) a C.sub.1 to C.sub.20 monohydric alcohol, (vii) a C.sub.1 to C.sub.20 ketone, (viii) a C.sub.1 to C.sub.10 carboxylic acid ester, or (ix) a C.sub.1 to C.sub.20 ether,component (D) a lubricating oil,component (E) carbon dioxide added subsequent to the, or each, addition of component (B),component (F) a defined carboxylic acid or derivative, andcomponent (G) at least one compound which is (i) an inorganic halide of (ii) an ammonium alkanoate or mono-, di-, tri- or tetra-alkyl ammonium formate or alkanoate provided that, when component (G) is (ii), component (F) is not an acid chloride,the weight ratios of all components being such as to produce a concentrate having a TBN greater than 300.
摘要:
A process for the production of a lubricating oil additive concentrate comprises reacting at elevated temperaturecomponent (A) a calcium hydrocarbyl-substituted sulphonate,component (B) an alkaline earth metal base added either in a single addition or in a plurality of additions at intermediate points during the reaction,component (C) at least one compound which is (i) a polyhydric alcohol having 2 to 4 carbon atoms, (ii) a di- (C.sub.3 or C.sub.4) glycol, (iii) a tri- (C.sub.2 -C.sub.4) glycol, (iv) a mono- or poly-alkylene glycol alkyl ether of the formula (I)R(OR.sup.1).sub.x OR.sup.2 (I)wherein R is a C.sub.1 to C.sub.6 alkyl group, R.sup.1 is an alkylene group, R.sup.2 is hydrogen or a C.sub.1 to C.sub.6 alkyl group and x is an integer from 1 to 6, (v) a C.sub.1 to C.sub.20 monohydric alcohol, (vi) a C.sub.1 to C.sub.20 ketone, (vii) a C.sub.1 to C.sub.10 carboxylic acid ester, or (viii) a C.sub.1 to C.sub.20 ether,component (D) a lubricating oil,component (E) carbon dioxide added subsequent to the, or each, addition of component (B),component (F) a defined carboxylic acid or derivative, component (G) at least one compound which is (i) an inorganic halide or (ii) an ammonium alkanoate or a mono-, di-, tri-, or tetra-alkyl ammonium formate or alkanoate provided that, when component (G) is (it), component (F) is not an acid chloride.
摘要:
A process for the preparation of lubricating oil additive concentrate having a TBN greater than 300 comprises reacting at elevated temperaturecomponent (A) at least one compound which is A(i) an alkaline earth metal hydrocarbyl-substituted phenate, A(ii) a hydrocarbyl-substituted phenol, A(iii) an alkaline earth metal hydrocarbyl-substituted phenate and a source of sulphur, A(iv) a hydrocarbyl-substituted phenol and a source of sulphur, A(v) an alkaline earth metal sulphurized hydrocarbyl-substituted phenate or A(vi) a sulphurized hydrocarbyl-substituted phenol.component (B) an alkaline earth metal basecomponent (C) a defined oxygenated compoundcomponent (D) a lubricating oil,component (E) carbon dioxidecomponent (F) sufficient to provide from 2 to 40% by weight based on the weight of the concentrate, of a defined carboxylic acid or derivative thereof, andcomponent (G) an ammonium alkanoate or a mono-, di-, tri- or tetra-alkyl ammonium formate or alkanoate,the weight ratios of components (A) to (G) being such as to produce a concentrate having a TBN greater than 300.
摘要:
Non-sulphurized overbased metal salts of sulphur-free calixarenes having a substituent hydroxyl group or groups available for reaction with metal base are claimed. The salts are useful as additives to lubricating oils by reason of their acids neutralization capability, their detergent and their antioxidant properties.