GB577879A - Improvements in the bleaching of oils and fats - Google Patents
Improvements in the bleaching of oils and fatsInfo
- Publication number
- GB577879A GB577879A GB20317/44A GB2031744A GB577879A GB 577879 A GB577879 A GB 577879A GB 20317/44 A GB20317/44 A GB 20317/44A GB 2031744 A GB2031744 A GB 2031744A GB 577879 A GB577879 A GB 577879A
- Authority
- GB
- United Kingdom
- Prior art keywords
- compound
- bleaching
- per cent
- per
- phosphoric
- 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
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/02—Refining fats or fatty oils by chemical reaction
- C11B3/08—Refining fats or fatty oils by chemical reaction with oxidising agents
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/001—Refining fats or fatty oils by a combination of two or more of the means hereafter
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microbiology (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fats And Perfumes (AREA)
Abstract
577,879. Bleaching oils and fats. LEVER BROS. & UNILEVER, Ltd. Oct. 20, 1944, No. 20317. Convention date, Oct. 27, 1943. [Class 91] Dark oils and fats are bleached first with an acidic phosphoric compound and an oxidiz:ng per compound and then with a bleaching earth. Preferably the stock is agitated at 'a slightly elevated temperature with both a small quantity of commercial phosphoric acid and a small quantity of hydrogen peroxide solution, until no further bleaching is manifest, and then washed with hot water to remove the phosphoric acid and any colouring matter that has coagulated. The stock may then be dried and bleached with 2 to 6 per cent. of a bleaching earth in the conventional manner. The acidic phosphoric compound may be commercial orthophosphoric acid in concentrations of from 70 to 85 per cent. Other such compounds used may be pyrophosphoric acid and acid salts of phosphoric acids such as potassium or sodium dihydrogen phosphate or disodium dihydrogen pyrophosphate. The oxidizing per-compound may be hydrogen peroxide, or an alkali metal peroxide, perborates or persulphates. Commercial hydrogen peroxide in 30 per cent. solution is used in examples. The proportions of the phosphoric compound and the per-compound may be within the range of .25 to 2 per cent. by weight of oil or fat, .5 to 1 per cent. of each being the optimum range. The bleaching is carried out at a temperature of 60- 70‹C. when the stock is in the liquid state but below the temperature at which charring commences, i.e., 80-90‹ C. The treating time is from one half to one and a half hours. The process may be operated as a batch or a continuous one. Specification 577,880 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US577879XA | 1943-10-27 | 1943-10-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB577879A true GB577879A (en) | 1946-06-04 |
Family
ID=22012766
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20317/44A Expired GB577879A (en) | 1943-10-27 | 1944-10-20 | Improvements in the bleaching of oils and fats |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB577879A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2569136A (en) * | 1950-04-28 | 1951-09-25 | Pittsburgh Plate Glass Co | Method of improving color and drying characteristics and similar properties of drying glyceride oils |
-
1944
- 1944-10-20 GB GB20317/44A patent/GB577879A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2569136A (en) * | 1950-04-28 | 1951-09-25 | Pittsburgh Plate Glass Co | Method of improving color and drying characteristics and similar properties of drying glyceride oils |
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