Compositions of hydrocarbon oils and oil soluble PAGS produced by DMC catalysts
| Title: | Compositions of hydrocarbon oils and oil soluble PAGS produced by DMC catalysts |
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| Patent Number: | 9,650,588 |
| Publication Date: | May 16, 2017 |
| Appl. No: | 14/350094 |
| Application Filed: | September 14, 2012 |
| Abstract: | A lubricant composition comprising a Group I, II, III or IV hydrocarbon oil and a polyalkylene glycol, the polyalkylene glycol having been prepared by reacting a C8-C20 alcohol and a mixed butylene oxide/propylene oxide feed using a double metal cyanide catalyst catalyzed oxyalkylation process, and wherein the lubricant composition remains clear and shows no phase separation at temperatures equal to and greater than the pour point of the hydrocarbon oil is provided. A method for making a lubricant composition is also provided. |
| Inventors: | Greaves, Martin R. (Baar, CH); Van Voorst, Ronald (Vogelwaarde, NL); Meertens, Marinus (Terneuzen, NL) |
| Assignees: | Dow Global Technologies LLC (Midland, MI, US) |
| Claim: | 1. A lubricant composition comprising: a Group I, II, III or IV hydrocarbon oil; and a polyalkylene glycol, the polyalkylene glycol having been prepared by reacting a C 8 -C 12 alcohol and a mixed butylene oxide/propylene oxide feed having a ratio of units derived from butylene oxide to the ratio of units derived from propylene oxide is from 3:1 to 1.3:1 using a double metal cyanide catalyst catalyzed oxyalkylation process, wherein the polyalkylene glycol has a kinematic viscosity of >100 cSt at 40° C.; wherein the lubricant composition remains clear and shows no phase separation at temperatures equal to or greater than the pour point of the hydrocarbon oil. |
| Claim: | 2. The lubricant composition according to claim 1 , wherein the lubricant composition comprises from 99.5 to 0.5 weight percent of the hydrocarbon oil and from 0.5 to 99.5 weight percent of the polyalkylene glycol. |
| Claim: | 3. The lubricant composition according to claim 1 , wherein the hydrocarbon oil and the polyalkylene glycol are soluble with one another for at least one week under at least one temperature selected from temperatures from 80° C. to −15° C. |
| Claim: | 4. The lubricant composition according to claim 1 , wherein the polyalkylene glycol has a carbon to oxygen ratio of at least 4:1. |
| Claim: | 5. The lubricant composition according to claim 1 , wherein the polyalkylene glycol has a carbon to oxygen ratio that is from 4:1 to 6:1. |
| Claim: | 6. The lubricant composition according to claim 1 , wherein the polyalkylene glycol has an unsaturation level <0.05 meq/g. |
| Claim: | 7. The lubricant composition according to claim 1 , wherein, the polyalkylene glycol has a kinematic viscosity of >100 cSt at 40° C. and comprises a ratio of units derived from butylene oxide to units derived from propylene oxide from 3:1 to 1.3:1. |
| Claim: | 8. A method of preparing a lubricant composition comprising blending at least (a) a Group I, II, III, or IV hydrocarbon oil, and (b) a polyalkylene glycol prepared by reacting a C 8 -C 12 alcohol and a mixed butylene oxide/propylene oxide feed having a ratio of units derived from butylene oxide to the ratio of units derived from propylene oxide from 3:1 to 1.3:1 in a double metal cyanide catalyst catalyzed oxyalkylation process, wherein the polyalkylene glycol has a kinematic viscosity of >100 cSt at 40° C., under conditions such that the hydrocarbon oil and the polyalkylene glycol are soluble with one another. |
| Patent References Cited: | 3829505 August 1974 Johnston et al. 5158922 October 1992 Hinney et al. 5470813 November 1995 Le-Khac 5482908 January 1996 Le-Khac 5783513 July 1998 Combs et al. 7811958 October 2010 Bohres et al. 2012/0108482 May 2012 Greaves et al. WO2004/087789 October 2004 WO2011/011656 January 2011 |
| Other References: | PCT Search Report dated May 12, 2012; from PCT counterpart Application No. PCT/US2012/055363. cited by applicant PCT International Preliminary Report on Patentability (IPRP) dated May 8, 2014; from PCT counterpart Application No. PCT/US2012/055363. cited by applicant EP Office Action dated Apr. 22, 2014; from EP counterpart Application No. 12772841.8. cited by applicant Instructions to EP Office Action dated Aug. 4, 2014; from EP counterpart Application No. 12772841.8. cited by applicant Response to Chinese Office Action filed Jun. 19, 2015 for counterpart Chinese Application No. 201280051900.8, 3 pages. cited by applicant Chinese Office Action dated Feb. 4, 2015 for counterpart Chinese Application No. 201280051900.8, 4 pages. cited by applicant |
| Primary Examiner: | Vasisth, Vishal |
| Attorney, Agent or Firm: | Brooks, Cameron & Huebsch, PLLC |
| Accession Number: | edspgr.09650588 |
| Database: | USPTO Patent Grants |
| Language: | English |
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