GB713029A - Improvements in the bleaching of soaps and soapstocks - Google Patents
Improvements in the bleaching of soaps and soapstocksInfo
- Publication number
- GB713029A GB713029A GB26321/51A GB2632151A GB713029A GB 713029 A GB713029 A GB 713029A GB 26321/51 A GB26321/51 A GB 26321/51A GB 2632151 A GB2632151 A GB 2632151A GB 713029 A GB713029 A GB 713029A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bleaching
- soap
- soapstock
- bleaching agent
- soaps
- 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
- 239000000344 soap Substances 0.000 title abstract 11
- 238000004061 bleaching Methods 0.000 title abstract 6
- 239000007844 bleaching agent Substances 0.000 abstract 5
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 abstract 4
- 238000000034 method Methods 0.000 abstract 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract 2
- 235000019482 Palm oil Nutrition 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 2
- 239000003921 oil Substances 0.000 abstract 2
- 235000019198 oils Nutrition 0.000 abstract 2
- 239000002540 palm oil Substances 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- 241001677259 Acanthophoenix rubra Species 0.000 abstract 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 1
- 235000019483 Peanut oil Nutrition 0.000 abstract 1
- 239000005708 Sodium hypochlorite Substances 0.000 abstract 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 150000003863 ammonium salts Chemical class 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 239000004202 carbamide Substances 0.000 abstract 1
- 239000003518 caustics Substances 0.000 abstract 1
- 239000000460 chlorine Substances 0.000 abstract 1
- 229910052801 chlorine Inorganic materials 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 239000011872 intimate mixture Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000000312 peanut oil Substances 0.000 abstract 1
- 150000002978 peroxides Chemical class 0.000 abstract 1
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 abstract 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical group [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 abstract 1
- 229940045872 sodium percarbonate Drugs 0.000 abstract 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 abstract 1
- 239000003760 tallow Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
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
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D13/00—Making of soap or soap solutions in general; Apparatus therefor
- C11D13/02—Boiling soap; Refining
- C11D13/06—Bleaching of soap or soap solutions
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Detergent Compositions (AREA)
Abstract
<PICT:0713029/III/1> Soaps and soapstocks are bleached by continuously feeding a hypochlorite bleaching agent into a stream of molten soap or soapstock and ensuring rapid and intimate mixing of the bleaching agent with the soap or soapstock. The soaps &c., specified comprise those made mainly from highly coloured oils such as red palm oil and green tallow soaps, groundnut oil soapstock containing the soap mixed with neutral oil, and palm oil soapstock. The bleaching agent is preferably sodium hypochlorite and includes substances such as chlorine which will form a hypochlorite in situ when a caustic alkali is present. A bleaching aid may also be used and may be fed either into the intimate mixture of the soap and bleaching agent or into the stream of molten soap. The bleaching aids specified comprise per-salts such as sodium persulphate or sodium percarbonate, peroxides such as hydrogen peroxide, oxygen, ammonia, ammonium salts or urea. The process may be carried out under pressure, usually not exceeding 5 atmospheres. A preferred temperature is 75 DEG to 85 DEG C., but temperatures up to or above 100 DEG C. may be used by operating under pressure and using steam. In the case of soapstocks, saponifying and bleaching in one operation may be effected by bleaching in the presence of an alkaline substance. The process should be carried out under alkaline conditions by adding alkali so that the pH does not fall below the desired value as the reaction proceeds. In a suitable apparatus for the process, water, bleaching agent, bleaching aid and molten soap or soapstock are fed at the bottom of a tubular vessel 8 through pipes 1, 2 3 and 4 respectively. The liquids are agitated by an agitator 10 having three blades preferably close to the outlets of the feeding pipes, with additional stirrers at other levels if desired, operated by a motor 11 through a shaft 12. A heating or cooling jacket 9 may be provided. The outlet 7 for the bleached soap is provided in the upper part of the vessel. Detailed examples of the process are given, in some of which a subsequent treatment with sodium hydrosulphite is used.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL87130D NL87130C (en) | 1951-11-09 | ||
| BE515372D BE515372A (en) | 1951-11-09 | ||
| GB26321/51A GB713029A (en) | 1951-11-09 | 1951-11-09 | Improvements in the bleaching of soaps and soapstocks |
| US319054A US2755294A (en) | 1951-11-09 | 1952-11-06 | Bleaching of soaps and soapstocks |
| CH312198D CH312198A (en) | 1951-11-09 | 1952-11-07 | Process for bleaching soaps. |
| FR1072394D FR1072394A (en) | 1951-11-09 | 1952-11-07 | Improvements to the bleaching of soaps and soap products |
| DEU1891A DE974368C (en) | 1951-11-09 | 1952-11-09 | Process for bleaching soaps and soap sticks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB26321/51A GB713029A (en) | 1951-11-09 | 1951-11-09 | Improvements in the bleaching of soaps and soapstocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB713029A true GB713029A (en) | 1954-08-04 |
Family
ID=10241812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26321/51A Expired GB713029A (en) | 1951-11-09 | 1951-11-09 | Improvements in the bleaching of soaps and soapstocks |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2755294A (en) |
| BE (1) | BE515372A (en) |
| CH (1) | CH312198A (en) |
| FR (1) | FR1072394A (en) |
| GB (1) | GB713029A (en) |
| NL (1) | NL87130C (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2057959A (en) * | 1933-01-18 | 1936-10-20 | Ig Farbenindustrie Ag | Process of removing the odor from bleached alkali metal salts of fatty acids |
| US2433662A (en) * | 1943-01-11 | 1947-12-30 | Mathieson Alkali Works Inc | Chlorite bleaching of fatty acid compounds |
| US2592226A (en) * | 1948-12-23 | 1952-04-08 | Olin Mathieson | Process for improving the color of fats and fatty oils by treatment with chlorine dioxide |
-
0
- NL NL87130D patent/NL87130C/xx active
- BE BE515372D patent/BE515372A/xx unknown
-
1951
- 1951-11-09 GB GB26321/51A patent/GB713029A/en not_active Expired
-
1952
- 1952-11-06 US US319054A patent/US2755294A/en not_active Expired - Lifetime
- 1952-11-07 CH CH312198D patent/CH312198A/en unknown
- 1952-11-07 FR FR1072394D patent/FR1072394A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2755294A (en) | 1956-07-17 |
| NL87130C (en) | |
| CH312198A (en) | 1955-12-31 |
| BE515372A (en) | |
| FR1072394A (en) | 1954-09-13 |
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