GB761027A - Process for recovery of complex ester synthetic lubricants - Google Patents
Process for recovery of complex ester synthetic lubricantsInfo
- Publication number
- GB761027A GB761027A GB32061/54A GB3206154A GB761027A GB 761027 A GB761027 A GB 761027A GB 32061/54 A GB32061/54 A GB 32061/54A GB 3206154 A GB3206154 A GB 3206154A GB 761027 A GB761027 A GB 761027A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alumina
- paraffin
- paraffins
- mixtures
- complex
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/34—Esters of acyclic saturated polycarboxylic acids having an esterified carboxyl group bound to an acyclic carbon atom
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Complex esters, obtained by reacting an aliphatic dicarboxylic acid, an aliphatic monohydric alcohol and a glycol or a polyalkylene glycol so that the resulting complex esters do not contain free carboxyl or hydroxyl groups, are contacted with alumina to remove corrosive material and any complex esters adsorbed on the alumina are extracted with a paraffin containing from 6 to 16 carbon atoms and recovered by distilling the paraffin extract. Suitable paraffins are hexane, heptane, octane, nonane, and decane, and mixtures thereof particularly mixtures of paraffins containing from 11 to 14 carbon atoms. The treatment with the alumina and with the paraffin may be carried out at room temperature up to 150 DEG F. and/or for a period of 1/2 to 3 hours. A suitable proportion of paraffin is 1 to 3 volumes (preferably 1 volume) of paraffin for 1 volume of alumina from the above contacting step. A suitable quantity of alumina is 0.1 to 7.0 per cent by weight of the complex ester. In the example a complex ester obtained by reacting together 2 mols. of sebacic acid, 2 mols. of 2-ethylhexanol and 1 mol. of polyethylene glycol having a molecular weight of about 200, using toluene as the water entrainer and sodium bisulphate as the catalyst, is treated by the above process rising hexane and heptane, and mixtures of paraffins having 11 to 14 carbon atom for the extraction step. The use of acetone and isopropyl alcohol for the alumina extraction step is also referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US761027XA | 1953-12-28 | 1953-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB761027A true GB761027A (en) | 1956-11-07 |
Family
ID=22129937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32061/54A Expired GB761027A (en) | 1953-12-28 | 1954-11-05 | Process for recovery of complex ester synthetic lubricants |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB761027A (en) |
-
1954
- 1954-11-05 GB GB32061/54A patent/GB761027A/en not_active Expired
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