GB2255782A - Floating soaps - Google Patents

Floating soaps Download PDF

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Publication number
GB2255782A
GB2255782A GB9210394A GB9210394A GB2255782A GB 2255782 A GB2255782 A GB 2255782A GB 9210394 A GB9210394 A GB 9210394A GB 9210394 A GB9210394 A GB 9210394A GB 2255782 A GB2255782 A GB 2255782A
Authority
GB
United Kingdom
Prior art keywords
soap
soda
silicate
composition
setting agent
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.)
Withdrawn
Application number
GB9210394A
Other versions
GB9210394D0 (en
Inventor
Eric Rutter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB919110539A external-priority patent/GB9110539D0/en
Application filed by Individual filed Critical Individual
Publication of GB9210394D0 publication Critical patent/GB9210394D0/en
Publication of GB2255782A publication Critical patent/GB2255782A/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/02—Floating bodies of detergents or of soaps
    • 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
    • C11D9/00—Compositions of detergents based essentially on soap
    • C11D9/04—Compositions of detergents based essentially on soap containing compounding ingredients other than soaps
    • C11D9/06—Inorganic compounds
    • C11D9/08—Water-soluble compounds
    • C11D9/10—Salts
    • 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
    • C11D9/00—Compositions of detergents based essentially on soap
    • C11D9/04—Compositions of detergents based essentially on soap containing compounding ingredients other than soaps
    • C11D9/06—Inorganic compounds
    • C11D9/18—Water-insoluble compounds

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

Floating soap is produced by including silicate of soda in its composition. The silicate of soda is added together with borax or titanium dioxide as setting agent, after hydrolysis of the basic soap ingredients. This may be done as a continuation of basic-soap production, or by adding the silicate of soda to commercially-available soap chips or nodules. The addition may be made to a melt of the chips or nodules, or after the chips or nodules have been reduced to particle- or granular-size. In the latter case, a blend of the soap with the silicate of soda, water and a setting agent, is extruded through a hot nozzle.

Description

soaps This invention relates to soaps and their manufacture.
The invention is concerned especially with soaps that float.
Tablets of soap do not in general, float in water, and attempts have been made in the past to obtain floatation by buoyancy elements added as inserts or otherwise to the tablet.
It is an object of the present invention to provide a soap, and a method of manufacture thereof, which by virtue of its composition floats naturally without the need for buoyancy aid.
According to one aspect of the present invention there is provided a soap having a composition that includes silicate of soda to afford buoyancy to the soap.
It has been found that by including silicate of soda in the soap composition, sufficient buoyancy to enable the soap to float in fresh water, can be readily achieved.
Furthermore, it has been found that with silicate of soda included in its composition, the soap generally dissolves in water less rapidly, and is less likely to produce unsightly residue or deposit from the water.
It is believed that the silicate of soda forms a water barrier surrounding individual particles or granules of the soap within the tablet and that the presence of this barrier, which may possibly trap air, contributes to the experienced buoyancy.
The amount of silicate of soda included within a tablet of soap to cause it to float may be in the range of 2% to 5% by weight; a range of 2.5% to 4.75% by weight, may be preferable.
According to another aspect of the present invention there is provided a method of manufacturing a soap wherein silicate of soda is included in the soap composition.
The composition of a soap in accordance with the present invention may be conventional apart from the inclusion of silicate of soda. The silicate of soda may be included after the hydrolysis stage in which one or more animal or vegetable oils of the soap composition are heated with dilute sodium or potassium hydroxide.
Examples of soaps and methods of manufacture thereof in accordance with the present invention will now be described.
In the first example to be described, tablets of toilet soap are manufactured by a process in which coconut and tallow oils are stirred together in a solution of caustic soda that is heated to, and maintained at, 60 degrees Celsius. After a sufficient time for hydrolysis to have taken place, other components of the soap including, in particular, silicate of soda, are added.
In addition to the silicate of soda, there is added powdered borax, mineral oil, benzene and petroleum jelly, together with whatever perfume or colouring is desired; titanium dioxide is a possible alternative to borax as setting agent. The resulting composition is heated to, and maintained for a short while (e.g. one minute) at, 65 degrees Celsius. After this, it is poured into moulds and the temperature reduced to -10 degrees Celsius and maintained at this level for about one hour, before the resulting soap tablets are released from the moulds for toilet use. A vacuum drying process may be used in addition, or as an alternative, to freeze drying.
The quantities (in ounces with the equivalent in terms of grammes) of ingredients used in soap-tablet manufacture described above, and sufficient for ten tablets, may be as set out in the following table: ingredient ounce gramme coconut oil 9 255.15 tallow oil 13 368.54 caustic soda 4 113.40 silicate of soda 3 85.05 powdered borax F 14.17 mineral oil 6 170.10 petroleum jelly 2 70.87 benzene d 14.17 perfume (if any) ss 14.17 colouring (if any) 2 56.70 The quantity of caustic soda identified above is diluted in about 0.33 pint (0.19 litre) of water when mixed with the coconut and tallow oils.
In a second example, soap chips or nodules, which are commercially available as the product of the basic hydrolysis process of conventional-soap manufacture, are used. The silicate of soda together with other desired ingredients, may be added to a melt of the chips or nodules, but, preferably in this case, is added to the chips or nodules as these have been reduced mechanically (for example, in a shredder) to particles or granules of about 2 mm or less in diameter. In this latter case, water and a setting agent in the form of borax or titanium dioxide, is added with the silicate of soda, and the whole is then blended together for some 3 minutes.
The resultant blend is then extruded using a plodder with a heated extrusion nozzle. The nozzle is maintained at a temperature of between 40 and 60 degrees Celsius, and the parison produced is then cut and shaped as necessary to the tablet-form required.
The method of the second example may be carried out using 2 to 5 ml of silicate of soda, 130 ml of boiled water and 4 gram of borax powder to each kilogram of soap chips or nodules.

Claims (15)

Claims:
1. A soap having a composition that includes silicate of soda to afford buoyancy to the soap.
2. A soap according to Claim 1 wherein the silicate of soda is included to 2% to 5% by weight of the composition.
3. A soap according to Claim 1 wherein the silicate of soda is included to 2.5% to 4.5% by weight of the composition.
4. A soap according to any one of Claims 1 to 3 including borax as a setting agent.
5. A soap according to any one of Claims 1 to 3 including titanium dioxide as a setting agent.
6. A method of manufacturing a soap wherein silicate of soda is included in the soap composition.
7. A method according to Claim 6 wherein the silicate of soda is added to a product of hydrolysis.
8. A method according to Claim 6 wherein soap chips or nodules are melted down and the silicate of soda is added to the melt.
9. A method according to Claim 6 wherein the silicate of soda is blended with particles or granules of soap and the blend is extruded.
10. A method according to any one of Claims 6 to 9 wherein borax is added with the silicate of soda, as a setting agent.
11. A method according to any one of Claims 6 to 9 wherein titanium dioxide is added with the silicate of soda, as a setting agent.
12. A method of manufacturing a soap, substantially as hereinbefore described as said first example.
13. A method of manufacturing a soap, substantially as hereinbefore described as said second example.
14. Soap manufactured by a method according to any one of Claims 6 to 13.
15. A tablet of floating soap substantially as hereinbefore described.
GB9210394A 1991-05-15 1992-05-15 Floating soaps Withdrawn GB2255782A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB919110539A GB9110539D0 (en) 1991-02-02 1991-05-15 Soaps

Publications (2)

Publication Number Publication Date
GB9210394D0 GB9210394D0 (en) 1992-07-01
GB2255782A true GB2255782A (en) 1992-11-18

Family

ID=10695053

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9210394A Withdrawn GB2255782A (en) 1991-05-15 1992-05-15 Floating soaps

Country Status (1)

Country Link
GB (1) GB2255782A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1201743A1 (en) * 2000-10-31 2002-05-02 The Procter & Gamble Company Detergent compositions
WO2002046341A2 (en) * 2000-12-05 2002-06-13 Unilever N.V. Process for manufacture of non-granular solid detergent composition
WO2002059242A2 (en) * 2000-10-31 2002-08-01 The Procter & Gamble Company Detergent compositions
GB2389117A (en) * 2002-05-29 2003-12-03 John Castleman Floating soap

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB688466A (en) * 1949-07-19 1953-03-11 Unilever Ltd Improvements in the manufacture of soap bars or tablets
GB697248A (en) * 1950-06-02 1953-09-16 Procter & Gamble Improvements in and relating to detergent product
GB723361A (en) * 1952-05-24 1955-02-09 British Glues And Chemicals Lt Improvements in and relating to the manufacture of soap tablets
GB1059089A (en) * 1964-12-10 1967-02-15 Procter & Gamble Ltd Toilet soap composition
US4891149A (en) * 1983-09-28 1990-01-02 The Bfgoodrich Company Compositions containing lime soap dispersing polymers and their use

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB688466A (en) * 1949-07-19 1953-03-11 Unilever Ltd Improvements in the manufacture of soap bars or tablets
GB697248A (en) * 1950-06-02 1953-09-16 Procter & Gamble Improvements in and relating to detergent product
GB723361A (en) * 1952-05-24 1955-02-09 British Glues And Chemicals Lt Improvements in and relating to the manufacture of soap tablets
GB1059089A (en) * 1964-12-10 1967-02-15 Procter & Gamble Ltd Toilet soap composition
US4891149A (en) * 1983-09-28 1990-01-02 The Bfgoodrich Company Compositions containing lime soap dispersing polymers and their use

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1201743A1 (en) * 2000-10-31 2002-05-02 The Procter & Gamble Company Detergent compositions
WO2002059242A2 (en) * 2000-10-31 2002-08-01 The Procter & Gamble Company Detergent compositions
WO2002059242A3 (en) * 2000-10-31 2002-10-03 Procter & Gamble Detergent compositions
WO2002046341A2 (en) * 2000-12-05 2002-06-13 Unilever N.V. Process for manufacture of non-granular solid detergent composition
WO2002046341A3 (en) * 2000-12-05 2002-08-29 Unilever Nv Process for manufacture of non-granular solid detergent composition
GB2389117A (en) * 2002-05-29 2003-12-03 John Castleman Floating soap

Also Published As

Publication number Publication date
GB9210394D0 (en) 1992-07-01

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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)