# US 11,306,053 B2 · Ester compound and lubricating oil base oil > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,306,053 B2 - Document ID: US11306053B2 - Status: Granted - Kind: B2 - Application number: 17/051,772 - Filed: 2019-01-31 - Published: 2021-07-29 - Granted: 2022-04-19 - Earliest claimed: 2018-05-01 - Assignees: Daisan Kasei Kabushiki Kaisha; Jnc Corporation - Applicants: Daisan Kasei Co., Ltd; Jnc Corporation - Inventors: Yasuo Urata; Tetsuya Isaka; Taichi Shimada - Web page: https://patentgrep.com/patent/US11306053B2 ## CPC - C07C 69/24: esterified with monohydroxylic compounds - C07C 67/08: by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds - C07C 69/44: Adipic acid esters - C07C 69/533: Monocarboxylic acid esters having only one carbon-to-carbon double bond - C07C 69/58: Esters of straight chain acids with eighteen carbon atoms in the acid moiety - C07C 69/82: Terephthalic acid esters - C10M 105/34: of monocarboxylic acids - C10M 105/36: of polycarboxylic acids - C10M 177/00: Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes - C10M 2207/281: of (cyclo)aliphatic monocarboxylic acids - C10M 2207/2815: used as base material - C10M 2207/2825: used as base material - C10M 2207/2855: used as base material - C10N 2020/02: Viscosity; Viscosity index - C10N 2030/02: Pour-point; Viscosity index - C10N 2070/00: Specific manufacturing methods for lubricant compositions - C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS - 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 [Problem] An ester compound having low viscosity, excellent fluidity even at low temperatures, and a high viscosity index; and a lubricating oil base oil containing said compound are provided. [Solution] The present invention provides an ester compound indicated by formula (I). Formula (I) (in formula (I), R1 is a hydrocarbon group having 1 to 35 carbon atoms and at least one hydrogen in the hydrocarbon group may be independently substituted with a group indicated by formula (II)). Formula (II) (in formula (II), R2 is a linear alkyl having 1 to 30 carbon atoms or a branched alkyl having 3 to 30 carbon atoms.) ## Claims ### Claim 1 An ester compound represented by Formula (I): in Formula (I), R1 is a hydrocarbon group having 1 to 35 carbon atoms, and at least one hydrogen in the hydrocarbon group may be independently substituted with a group represented by Formula (II); in Formula (II), R2 is a linear alkyl having 1 to 30 carbon atoms or a branched alkyl having 3 to 30 carbon atoms. ### Claim 2 (depends on 1) The ester compound according to claim 1, which is represented by Formula (I): in Formula (I), R1 is a linear alkyl having 1 to 35 carbon atoms, a branched alkyl having 3 to 35 carbon atoms, or a linear alkenyl having 4 to 24 carbon atoms, in which at least one hydrogen in the alkyl and the alkenyl may be independently substituted with a group represented by Formula (II); in Formula (II), R2 is a linear alkyl having 1 to 30 carbon atoms or a branched alkyl having 3 to 30 carbon atoms. ### Claim 3 (depends on 1) The ester compound according to claim 1, which is represented by Formula (I): in Formula (I), R1 is phenyl, cyclohexyl, or cyclohexenyl, in which at least one hydrogen in these rings may be independently substituted with a linear alkyl having 1 to 10 carbon atoms or a group represented by Formula (II); in Formula (II), R2 is a linear alkyl having 1 to 30 carbon atoms or a branched alkyl having 3 to 30 carbon atoms. ### Claim 4 (depends on 1) The ester compound according to claim 1, wherein at least one hydrogen in R1 is substituted with a group represented by Formula (II), and R2 is a group represented by Formula (III): ### Claim 5 (depends on 1) A lubricating oil base oil, comprising: the ester compound according to claim 1. ### Claim 6 (depends on 1) A method for producing the ester compound according to claim 1, the method comprising: a step of subjecting 10-ethyl-7-tetradecanol and carboxylic acid to esterification reaction. ### Claim 7 (depends on 2) The ester compound according to claim 2, wherein at least one hydrogen in R1 is substituted with a group represented by Formula (II), and R2 is a group represented by Formula (III): ### Claim 8 (depends on 3) The ester compound according to claim 3, wherein at least one hydrogen in R1 is substituted with a group represented by Formula (II), and R2 is a group represented by Formula (III): ### Claim 9 (depends on 2) A lubricating oil base oil, comprising: the ester compound according to claim 2. ### Claim 10 (depends on 3) A lubricating oil base oil, comprising: the ester compound according to claim 3. ### Claim 11 (depends on 4) A lubricating oil base oil, comprising: the ester compound according to claim 4. ### Claim 12 (depends on 7) A lubricating oil base oil, comprising: the ester compound according to claim 7. ### Claim 13 (depends on 8) A lubricating oil base oil, comprising: the ester compound according to claim 8. ### Claim 14 (depends on 2) A method for producing the ester compound according to claim 2, the method comprising: a step of subjecting 10-ethyl-7-tetradecanol and carboxylic acid to esterification reaction. ### Claim 15 (depends on 3) A method for producing the ester compound according to claim 3, the method comprising: a step of subjecting 10-ethyl-7-tetradecanol and carboxylic acid to esterification reaction. ### Claim 16 (depends on 4) A method for producing the ester compound according to claim 4, the method comprising: a step of subjecting 10-ethyl-7-tetradecanol and carboxylic acid to esterification reaction. ### Claim 17 (depends on 7) A method for producing the ester compound according to claim 7, the method comprising: a step of subjecting 10-ethyl-7-tetradecanol and carboxylic acid to esterification reaction. ### Claim 18 (depends on 8) A method for producing the ester compound according to claim 8, the method comprising: a step of subjecting 10-ethyl-7-tetradecanol and carboxylic acid to esterification reaction.