Additive concentrates

Patent metadata

Field	Value
Publication number	US-11292980-B2
Application number	US-201715465681-A
Country	US
Kind code	B2
Filing date	Mar 22, 2017
Priority date	Mar 22, 2016
Publication date	Apr 5, 2022
Grant date	Apr 5, 2022

Abstract

The use of berated dispersant, preferably in combination with polyalkylenyl succinic anhydrides, to stabilise an additive concentrate which includes a salicylate detergent and a nitrogen-free ashless organic friction modifier.

First claim

What is claimed is:

1. An additive concentrate for use in forming a lubricating oil composition, the additive concentrate comprising diluent oil of lubricating viscosity present in a minor amount of less than 50 mass %, based on the total mass of the additive concentrate, and a plurality of oil-soluble or oil-dispersible additives contained therein, wherein the combined amount of all of said plurality of additives in the additive concentrate is greater than 50 mass % on an active ingredient basis, based on the total mass of the additive concentrate, and wherein the plurality of additives include the following additives:
(A) one or more oil-soluble or oil-dispersible overbased alkaline earth metal salicylate detergent(s) having a TBN at 100% active mass of at least 150 mg KOH/g, as measured in accordance with ASTM D 2896, present in an amount of from 5 to 22.5 mass % on an active ingredient basis, based on the total mass of the additive concentrate;
(B) one or more oil-soluble or oil-dispersible ashless nitrogen-free organic friction modifier(s) which is one or more aliphatic (C 11 to C 23 )hydrocarbyl fatty acid ester(s) present in an amount of from 1.0 to 5.0 mass % on an active ingredient basis, based on the total mass of the additive concentrate, wherein the one or more aliphatic (C 11 to C 23 )hydrocarbyl fatty acid ester(s) (B) is the ester reaction product of one or more aliphatic (C 11 to C 23 ) hydrocarbyl fatty acid(s), or a reactive derivative(s) thereof, and one or more polyhydric (C 2 to C 20 )alkanol(s); and
(C) one or more borated polyalkene-substituted succinimide dispersants, wherein the polyalkene group(s) have a number-average molecular weight in the range of 900 to 2,800 daltons as measured by gel permeation chromatography (GPC) and the alkene of the polyalkene comprises a major molar amount of C 2 to C 5 olefin, present in an amount of 0.01 to 4.4 mass on an active ingredient basis, based on the total mass of the additive concentrate; and
(D) one or more oil-soluble or oil-dispersible poly(isobutenyl) succinic anhydride(s) having an average succination ratio of 1.35 to 3.50 and wherein the polyisobutene group(s) have a number-average molecular weight in the range of 1000 to 4,500 daltons as measured by gel permeation chromatography (GPC), present in an amount of 0.75 to 7.5 mass % on an active ingredient basis, based on the total mass of the additive concentrate,

wherein (C) and (D) are each present in amounts that are effective, in combination, to stabilise the additive concentrate, where the additive concentrate does not show a sediment volume over 0.05 mass %, is clear and bright, and has no phase separation as determined by the Storage Stability Test.

2. An additive concentrate as claimed in claim 1 , wherein the polyisobutene group(s) of the poly(isobutenyl) succinic anhydride(s)(D) have a number-average molecular weight in the range of 1250 to 4,500 daltons as measured by gel permeation chromatography (GPC).

3. An additive concentrate as claimed in claim 1 , wherein the one or more poly(isobutylenyl) succinic anhydride(s) (D) is the only poly(C 2 to C 6 )alkylenyl succinic anhydride(s) included in the additive concentrate.

4. An additive concentrate as claimed in claim 1 , wherein the one or more poly(isobutylenyl) succinic anhydride(s) (D) is present in amount of from 2.0 to 7.5 mass % on an active ingredient basis, based on the total mass of the additive concentrate.

5. An additive concentrate as claimed in claim 1 , wherein the one or more aliphatic (C 11 to C 23 )hydrocarbyl fatty acid ester(s) (B) is the ester reaction product of one or more aliphatic (C 11 to C 23 ) hydrocarbyl fatty acid(s), or a reactive derivative(s) thereof, and one or more polyhydric (C 2 to C 15 )alkanol(s).

6. An additive concentrate as claimed in claim 5 , wherein the one or more polyhydric (C 2 to C 15 )alkanol(s) is selected from the group consisting of glycerol, neopentyl glycol, trimethylolethane, trimethylolpropane, trimethylolbutane, pentaerythritol, dipentaerythritol, dipentaerythritol and sorbitol.

7. An additive concentrate as claimed in claim 5 , wherein the polyhydric (C 2 to C 20 )alkanol(s) is glycerol.

8. An additive concentrate as claimed in claim 1 , wherein the one or more aliphatic (C 11 to C 23 ) hydrocarbyl fatty acid ester(s) (B) is glycerol mono-oleate (GMO).

9. An additive concentrate as claimed in claim 1 , wherein the one or more alkaline earth metal salicylate detergent(s) (A) is one or more calcium salicylate detergent(s).

10. An additive concentrate for use in forming a lubricating oil composition, the additive concentrate comprising diluent oil of lubricating viscosity present in a minor amount of less than 50 mass %, based on the total mass of the additive concentrate, and a plurality of oil-soluble or oil-dispersible additives contained therein, wherein the combined amount of all of said plurality of additives in the additive concentrate is greater than 50 mass % on an active ingredient basis, based on the total mass of the additive concentrate, and wherein the plurality of additives include the following additives:
(A) one or more oil-soluble or oil-dispersible overbased calcium salicylate detergent(s) having a TBN at 100% active mass of at least 150 mg KOH/g, as measured in accordance with ASTM D 2896, present in an amount of from 5 to 25 mass % on an active ingredient basis, based on the total mass of the additive concentrate;
(B) glycerol mono-oleate present in an amount of from 2.0 to 10.0 mass % on an active ingredient basis, based on the total mass of the additive concentrate; and
(C) one or more borated polyisobutylene-substituted succinimide dispersants, wherein the polyisobutylene group(s) have a number-average molecular weight in the range of 900 to 5,000 daltons as measured by gel permeation chromatography (GPC) present in an amount of 0.01 to 4 mass % on an active ingredient basis, based on the total mass of the additive concentrate; and
(D) one or more oil-soluble or oil-dispersible poly(isobuteneyl) succinic anhydride(s) having an average succination ratio of 1.40 to 3.50 and wherein the polyisobutene group(s) have a number-average molecular weight in the range of 1000 to 5,000 daltons as measured by gel permeation chromatography (GPC), present in an amount of 0.75 to 10 mass % on an active ingredient basis, based on the total mass of the additive concentrate,

wherein (C) and (D) are each present in amounts that are effective, in combination, to stabilise the additive concentrate, where the additive concentrate does not show a sediment volume over 0.05 mass %, is clear and bright, and has no phase separation as determined by the Storage Stability Test, where (A) and (C) are blended into the additive concentrate.

11. An additive concentrate for use in forming a lubricating oil composition, the additive concentrate comprising diluent oil of lubricating viscosity present in a minor amount of less than 50 mass %, based on the total mass of the additive concentrate, and a plurality of oil-soluble or oil-dispersible additives contained therein, wherein the combined amount of all of said plurality of additives in the additive concentrate is greater than 50 mass % on an active ingredient basis, based on the total mass of the additive concentrate, and wherein the plurality of additives include the following additives:
(A) one or more oil-soluble or oil-dispersible overbased calcium salicylate detergent(s) having a TBN at 100% active mass of at least 150 mg KOH/g, as measured in accordance with ASTM D 2896, present in an amount of from 5 to 25 mass % on an active ingredient basis, based on the total mass of the additive concentrate;
(B) gly

Assignees

• Infineum Int Ltd

Inventors

• Woodward Philip J
• Marsh Adam P
• Cuckston Georgina L

Classifications

• C10N2040/25

  Internal-combustion engines · CPC title

• C10M2203/1025

  used as base material · CPC title

• C10N2030/70

  Soluble oils · CPC title

• C10M2219/068

  Thiocarbamate metal salts · CPC title

• C10M2207/281

  of (cyclo)aliphatic monocarboxylic acids · CPC title