# US 5,346,636 A · Colloidal products containing boron and phosphorus, their preparation and their uses as lubricating additives > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,346,636 A - Document ID: US5346636A - Status: Granted - Kind: A - Application number: 07/953,615 - Filed: 1992-09-30 - Granted: 1994-09-13 - Earliest claimed: 1991-09-30 - Assignees: Institute Francais du Petrole - Inventors: Guy Parc; Maurice Born - Web page: https://patentgrep.com/patent/US5346636A ## CPC - C10M 159/123: {obtained by phosphorus or phosphorus-containing compounds, e.g. P x S x with organic compounds} - C10M 159/24: containing sulfonic radicals - C10M 2227/061: Esters derived from boron - C10N 2040/02: Bearings - C10N 2040/25: Internal-combustion engines - C10N 2040/251: {Alcohol-fuelled engines} - C10N 2040/255: {Gasoline engines} - C10N 2040/28: Rotary {engines} - C10M: LUBRICATING COMPOSITIONS (well drilling compositions C09K8/02); USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION (mould release, i.e. separating, agents for metals B22C3/00, for plastics or substances in a plastic state, in general B29C33/56, for glass C03B40/02; textile lubricating compositions D06M11/00, D06M13/00, D06M15/00; immersion oils for microscopy G02B21/33) - C10N: INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS ## Abstract A colloidal product is provided containing boron and phosphorus obtained by a process comprising: (1) providing a borated overbased sulfonate selected from the group consisting of a borated overbased alkali metal sulfonate and a borated, overbased alkaline-earth sulfonate; (2) reacting the borated overbased sulfonate with at least one phosphorus sulfide; and (3) separating the product obtained. ## Claims ### Claim 1 A colloidal product containing boron and phosphorus obtained by a process comprising: (1) providing a borated overbased sulfonate selected from the group consisting of a overbased alkali metal sulfonate and a borated overbased, highly basic alkaline-earth sulfonate; (2) reacting said overbased sulfonate with at least one phosphorus sulfide; and (3) separating the product obtained. ### Claim 2 (depends on 1) A product according to claim 1, wherein step (1) is carried out by reacting at least one acid compound containing boron during production of the overbased sulfonate. ### Claim 3 (depends on 1) A product according to claim 1, wherein step (1) is carried out by post-treating an overbased sulfonate with at least one acid compound containing boron. ### Claim 4 (depends on 2) A product according to claim 2, wherein said acid compound containing boron is boron oxide, a boric acid or a boric ester used in the presence of water. ### Claim 5 (depends on 3) A product according to claim 3, wherein said overbased sulfonate is a sodium sulfonate or a calcium sulfonate made more basic with calcium carbonate or sodium carbonate, and has a TBN of 50 to 600. ### Claim 6 (depends on 2) A product according to claim 2, wherein in step (1) the operation is effected without solvent at a temperature of between 100.degree. and 175.degree.. ### Claim 7 (depends on 2) A product according to claim 2, wherein in step (1), the operation is effected in a protic solvent at the reflux temperature thereof. ### Claim 8 (depends on 2) A product according to claim 2, wherein in step (1) the acid compound containing boron is used in a molar proportion of 0.01/1 to 7/1 in relation to the basic equivalent of the overbased sulfonate. ### Claim 9 (depends on 1) A product according to claim 1, wherein the reaction in step (2) is effected at a pressure of 1 to 5 bars, at a temperature of between 60.degree. and 200.degree. C. and with a molar proportion of phosphorus sulfide of 0.002/1 to 0.15/1 in relation to the basic equivalent of the highly basic sulfonate. ### Claim 10 (depends on 1) A product according to claim 1, wherein the reaction in step (2) is effected in a hydrocarbon solvent. ### Claim 11 (depends on 1) A product according to claim 1, wherein in step (3) filtration is effected and the solvent is removed. ### Claim 12 (depends on 1) A product according to claim 1, wherein a 2,5-dimercapto-1,3,4-thiadiazole is added before immediately step (2), in a molar proportion of 0.03 to 3 dimercaptothiadiazole groups per atom-gramme of phosphorus used. ### Claim 13 (depends on 1) A lubricating oil or fat containing a product according to claim 1 as an additive. ### Claim 14 (depends on 13) A lubricating oil or fat containing a product according to claim 13, in which said product is incorporated into the lubricating oil or fat in a concentration of 0.1 to 25% by weight. ### Claim 15 (depends on 3) A product according to claim 3, wherein said acid compound containing boron is boron oxide, a boric acid, or a boric ester used in the presence of water. ### Claim 16 (depends on 3) A product according to claim 3, wherein overbased sulfonate is a sodium sulfonate or a calcium sulfonate made more basic with calcium carbonate or sodium carbonate and has a TBN of 50 to 600. ### Claim 17 (depends on 3) A product according to claim 3, wherein in step (1), the operation is effected without solvent at a temperature of between 100.degree.-175.degree. C. ### Claim 18 (depends on 3) A product according to claim 3, wherein in step (1), the operation is conducted in a protic solvent at the reflux temperature thereof. ### Claim 19 (depends on 3) A product according to claim 3, wherein in step (1), the acid compound containing boron is used in a molar proportion of 0.01/1 to 7/1 in relation to the basic equivalent of the overbased sulfonate. ### Claim 20 (depends on 1) A product according to claim 1, wherein a 2,5-dimercapto-1,3,4-thiadiazole is added immediately after step (2) in a molar proportion of 0.03 to 3 dimercaptothiadiazole groups per atom-gram of phosphorus used. ### Claim 21 (depends on 14) A product according to claim 14, comprising a lubricating oil containing about 0.18-0.33% by weight of boron in the oil.