| Title of Invention | PROCESS FOR PREPARING SOAP-ACYL ISETHIONATE COMPOSITIONS. |
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| Abstract | A batch and continuous process>rfl'sV'disclosed for the production of a composition comprising alkali metal salts of Ca-C2 2 alkyl fatty monocarboxylie acid and C8-C22 acyl isethionate in a ratio of 20:1 to 1:0.98. Both batch and continuous routes require that the saponifying aqueous caustic solution includes sodium hydroxide and sodium isethionate added as a hot solution. For the batch route, the sequence of steps requires the caustic solution to be added slowly to the fatty acid. In the continuous process, it is advantageous to introduce fatty acid upstream from the point where the caustic solution stream enters the mixing chamber. Addition of the acyl isethionate either precedes addition of caustic solution, which then is added at a temperature of at least 80°C, or else is subsequent to addition of caustic solution. |
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135-BOM-1991-CANCELLED PAGES.pdf
135-BOM-1991-CORRESPONDENCE(IPO).pdf
135-BOM-1991-CORRESPONDENCE(RECEIVED).pdf
135-BOM-1991-FORM 2(GRANTED).pdf
135-BOM-1991-SPECIFICATION(AMENDED).pdf
| Patent Number | 172040 | ||||||||||||||||||
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| Indian Patent Application Number | 135/BOM/1991 | ||||||||||||||||||
| PG Journal Number | 41/2012 | ||||||||||||||||||
| Publication Date | 12-Oct-2012 | ||||||||||||||||||
| Grant Date | 25-Mar-1994 | ||||||||||||||||||
| Date of Filing | 10-May-1991 | ||||||||||||||||||
| Name of Patentee | HINDUSTAN LEVER LIMITED, | ||||||||||||||||||
| Applicant Address | HINDUSTAN LEVER HOUSE, 165/166 BACKBAY RECLAMATION, MUMBAI. | ||||||||||||||||||
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| PCT International Classification Number | C11D11/04 | ||||||||||||||||||
| PCT International Application Number | N/A | ||||||||||||||||||
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