EP0053016A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Fat refining
Assignee: Unilever PLC
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Filing: 1981-11-20
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Granted: —
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Expires: 2001-11-20
Abstract
Abstract Fats especially sal fat used in chocolate are prepared by contact with a specially prepared amorphous alumina-silica co-gel, especially to remove impurities which are present only in minor amounts but which have a marked effect on the melting quality and colour of the fat.
Inventors
- 👤 Naganathan Viswanath Flat No. 3 Bringi
- 👤 Krishnamoorthi Flat 51 Chandrasekaran
- 👤 Shrinath Sheshgiri Kalbag
- 👤 Ramaraju Sreerama Murthy
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 15:25
CPC Classifications
A; A23; A23G; A23G1/00; A23G1/30; A23G1/32; A23G1/36; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; C; C11; C11B; C11B3/00; C11B3/10
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
23 words
Process for purifying fat comprising contacting the fat in liquid phase with a co-gelled silica-alumina adsorbent and separating the fat from the adsorbent.
Claim 2
Dependent Claim
23 words
Process for purifying fat comprising contacting the fat in liquid phase with a co-gelled silica-alumina adsorbent and separating the fat from the adsorbent.
Claim 3
Dependent Claim
15 words
Process according to Claim 1 wherein the fat is in admixture with an organic solvent.
Claim 4
Dependent Claim
10 words
Process according to Claim 2 wherein the solvent comprises hexane.
Claim 5
Dependent Claim
25 words
Process according to Claim 2 or 3 wherein the fat is dissolved in the solvent in a concentration of 5-60% by weight of the solution.
Claim 6
Dependent Claim
20 words
Process according to Claim 4 wherein the concentration of said solution is from 5-30 weight per cent of the solution.
Claim 7
Dependent Claim
34 words
Process according to any of the preceding Claims 2 to 5 wherein the adsorbent is dispersed in the fat solution in an amount from 0.3-3 parts by weight per part of fat by weight.
Claim 8
Dependent Claim
24 words
Process according to any of the preceding Claims 2 to 5 wherein the solution of fat is passed through a bed of the adsorbent.
Claim 9
Dependent Claim
14 words
Process according to any of the preceding claims wherein the fat comprises sal fat.
Claim 10
Dependent Claim
20 words
Process according to any of the preceding claims wherein the alumina content of the adsorbent is between 0.1 and 25%.
Claim 11
Dependent Claim
17 words
Process according to Claim 9 wherein the alumina content of the adsorbent is between 0.5 and 9%.
Claim 12
Dependent Claim
27 words
Process according to any of the preceding claims wherein the adsorbent is activated before contact with the fat, by heating the adsorbent at a temperature from 100-500°C.
Claim 13
Dependent Claim
18 words
Process according to Claim 11 wherein the adsorbent is activated by heating from 100-200°C for approximately four hours.
Claim 14
Dependent Claim
29 words
Process according to any of the preceding claims 2 to 12 wherein the adsorbent is regenerated after use by contact with a solvent more polar than the fat solvent.
Claim 15
Dependent Claim
23 words
Process according to Claim 13 wherein the fat solvent -comprises hexane and the regeneration solvent is ether or mixtures of ether/methanol or hexane/isopropanol.
Claim 16
Dependent Claim
19 words
Process according to any of the preceding claims wherein the particle size of the adsorbent is approximately 100 mesh.
Claim 17
Dependent Claim
29 words
Process according to any of the preceding Claims 2 to 15 wherein the fat is contacted with the adsorbent at a temperature below the boiling point of the solvent.
Claim 18
Dependent Claim
16 words
Process according to Claim 1 substantially as herein before described with reference to the accompanying Examples.
Claim 19
Dependent Claim
68 words
Process for the preparation of a silica-alumina adsorbent suitable for use in a process as claimed in Claim 1 which comprises admixing an acid solution of aluminium sulphate with a silicate solution in an amount giving an alumina content between 0.1 and 25%, adjusting the final pH to 7 and washing the hydrogel obtained free from sulphate ions, drying and activating the co-gel by heat treatment from 100-500°C.
Claim 20
Dependent Claim
16 words
Process according to Claim 18 wherein the aluminium sulphate solution is added to the silicate solution.
Claim 21
Dependent Claim
23 words
An amorphous, activated, silica-alumina co-gel adsorbent suitable for use in the process as claimed in any of the preceding Claims 1 to 17.
Claim 22
Dependent Claim
16 words
Sal and other fats wherever prepared by a process as claimed in Claims 1 to 17.
References Cited (Backward Citations)
No citation records indexed.
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