WO1997032965A1 - Composition of washing bars - Google Patents
Composition of washing bars Download PDFInfo
- Publication number
- WO1997032965A1 WO1997032965A1 PCT/EP1996/005878 EP9605878W WO9732965A1 WO 1997032965 A1 WO1997032965 A1 WO 1997032965A1 EP 9605878 W EP9605878 W EP 9605878W WO 9732965 A1 WO9732965 A1 WO 9732965A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- acid
- composition
- weight
- water soluble
- soap
- Prior art date
Links
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
- C11D10/00—Compositions of detergents, not provided for by one single preceding group
- C11D10/04—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap
-
- 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
- C11D17/0047—Detergents in the form of bars or tablets
- C11D17/006—Detergents in the form of bars or tablets containing mainly surfactants, but no builders, e.g. syndet bar
-
- 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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3757—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
- C11D3/3761—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions in solid compositions
-
- 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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3769—(Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines
Definitions
- This invention relates to compositions of washing bars for personal or fabric washing.
- the invention particularly relates to compositions with higher water content but retaining the mechanical, structural aspects for satisfactory processability and end user properties such as better feel, lathering, lower sog/mush and satisfactory cleaning.
- Yield stress needed to cause a flow in a material is of fundamental importance in determining the structural stability and integrity of multiphase composites such as soaps and detergents. Yield stress plays a major role in the processability of soaps and detergents especially in soap processing equipment such as roll mills, plodders, stampers etc.
- Milled bars typically have a water content of between 8-15% while 'hard' (non-milled) soap bars have water content in the re,-ion of 20-35%. Increase in the water content can replace the TFM making it more economical but will tend to soften the soap bar.
- GB 2,230,022 discloses the use of polyacrylate and citrate as barrier materials to improve the softening of the washed fabric by clay n detergent powder formulations.
- US 5,279,756 discloses the use of acrylic polymers and carboxylic acids as sequestering agents in dish washing compositions.
- BR 8905598 discloses the use of two specific polymers namely acrylic polymer CO-1 (Acrysol MW-400N) , Rohm and Haas, and Acrysol ASE-75 of Rohm and Haas with a molecular weight of 40,000 to make the bar harder, improve foaming and skin feel. It further specifies that 'high molecular weight acrylic polymers are used because the higher viscosity of the liquid will make more distinct striations and, since the acrylic polymer is on the surface, provides better lubricity to hands during washing with the detergent bar' .
- the compositions disclosed m this patent are of fairly low water concentrations where hardening s not a problem.
- the present invention differs from the prior art in that it addresses the problem of producing bars with high water content which normally would be soft and pose acute problems in processing and unsatisfactory end use.
- compositions with higher water content but retaining the appropriate structural properties and processability.
- the composition would also have enhanced physical properties such as higher yield stress, lathering, better feel, lower sog/mush and satisfactory cleaning.
- the present invention s directed to improved washing formulations with higher water content but retaining superior physical properties such as mechanical, structural aspects for satisfactory processability and end user properties such as better feel, lathering, lower sog/mush and satisfactory cleaning, by way of incorporation of a synergistic additives comprising of water soluble anionic polymers and/or copolymers, having a molecular weight range 500-30,000, in the range of 0.05 to 5% by weight of the formulation and may optionally comprise of one or more of carboxylated compounds at concentrations upto 5% by weight of the total formulation.
- a synergistic additives comprising of water soluble anionic polymers and/or copolymers, having a molecular weight range 500-30,000, in the range of 0.05 to 5% by weight of the formulation and may optionally comprise of one or more of carboxylated compounds at concentrations upto 5% by weight of the total formulation.
- a washing composition with higher water content but retaining excellent yield stress, improved lathering, feel and satisfactory cleaning comprising:
- the actives in the composition is provided by neat soap obtained from saponification of oils/fats such as rice bran, tallow, palm, castor, groundnut, palm kernel, cotton seed, soybean, coconut etc. or their respective fatty acids and/or any of the synthetic detergents.
- oils/fats such as rice bran, tallow, palm, castor, groundnut, palm kernel, cotton seed, soybean, coconut etc. or their respective fatty acids and/or any of the synthetic detergents.
- the water soluble anionic polymers that can be used in the formulations according to the invention include polyacrylic acid, polymethacrylic acid, polystyrene sulphonic acid, acrylic acid-maleic acid copolymers etc.
- Suitable water soluble copolymers include combination of monomers, at least one of which contains hydrophilic groups like sulphonic acid, sulphate or carboxylic acid or their salts, e.g. acyrlamide-acrylic/methacrylic acid copolymers, polyacrylamide maleic acid copolymers, acrylic/methacrylic acid copolymers.
- the above water soluble anionic polymers and water soluble co-polymers is selected to have a molecular weight range 500- 30,000.
- the preferred water soluble anionic polymer is polyacrylic acid in the molecular weight range 500-5000.
- the carboxylated compounds preferably are citric acid, lactic acid and maleic acid.
- the Carri-Med Rheometer being a controlled stress rheometer can be used to measure the yield stress of materials under shear conditions.
- the controlled stress rheometer can apply stresses as low as 0.07 Pa and the stress value at which flow is initiated is a direct measure of the yield stress of the material (strain rate is measured) .
- Carri-Med rheometer model CSLIOO was used with a cone and plate fixture having a 2cm diameter and an angle of 1°58' . The measurements were carried out at 40°C.
- the maximum yield stress that can be measured on this instrument is 6300 pa. and the minium detectable strain rate is about 10 "e sec "1 .
- the soap base (300 g) containing 30% coconut oil fatty acid salt, balance being the salts of distilled fatty acids derived from a mixture of oils (e.g. rice bran/palm) of moisture content 10.8% was taken in an autoclave and heated to 50°C. 83ml of water was added to it and the soap was stirred and heated to 95°C for 3hrs. The soap melt was fed slowly into another chamber below the autoclave which was maintained under vacuum. The vacuum dried soap (moisture 27%) was cooled to 25-30°C, passed through a triple roll mill and plodded into bars .
- the milled soap mentioned above were dried in an air oven (40-45°C) before plodding for making soaps with lower moisture contents.
- the soap base (300g) was prepared as in the case of control but a mixture containing 1 g, sodium hydroxide, 1.5 g. polyacrylic acid (PAA) (SOKOLAN PA ex. BASF, mol .w .1500) and 1.5g. citric acid dissolved in 83 ml of water was added to the soap in the autoclave. The soap was stirred and heated to 95°C for 3hrs. The soap melt was fed slowly into another chamber below the autoclave maintained under vacuum. The vacuum dried soap was cooled to 25-30°C, passed through a triple roll mill and plodded into bars.
- PAA polyacrylic acid
- citric acid dissolved in 83 ml of water
- the milled soap mentioned above were dried in an air oven (40-45°C) before plodding for making soaps with lower moisture contents.
- the samples as per Example a and b were subjected to yield stress and penetration tests following the method described herein.
- the apparatus consists of a cheesewire attached to a counter balanced arm which can pivot freely via a ball race bearing.
- a billet of soap s positioned under the wire such that the wire is just in contact with one edge of the billet.
- W g. weight
- the area over which the force acts will increase as the depth of cut increases and therefore the stress being exerted w ll decrease until it is exactly balanced by resistance of the soap and the wire stops moving.
- the stress at this point is equal to the yield stress of the soap.
- the time taken to reach this point was found to be 30 sees, so that a standard t me of 1 min was chosen to ensure that the yield stress had been reached. After this time the weight was removed and the length of the cut measured.
- the yield stress is calculated using the semi-empirical formula :
- a pointed metal cone of specified dimensions is allowed to penetrate into the bar using standard weight on the top of the cone.
- the cone penetrates the bar upto a certain depth till the downward force due to weight balances with the upward force due to the drag.
- the depth is measured in units of 1/10 of a mm. Higher penetration means lower yield stress .
- Citric acid - - 1 0.5
- the soap comprised of 30% coconut oil fatty acid salt, balance being the salts of distilled fatty acid derived from a mixture of oils (eg. rice bran/palm) .
- the soap contained 30% water to which various ingredients (PAA, citric acid, perfume etc.) were added and the mixture dried to the final moisture content indicated in Table 4.
- a set of bars is used to wash in a standard manner once daily by each operator and drained after each wash, for five days. After two further non-washing days, % wear is determined as weight loss. This is a standardised simulation of use.
- the test involves a panel of volunteers who wash their hands with the test tablets once during the test.
- the hand wash is performed 24° French hard (FH) water in a bowl and volume of lather produced is measured.
- FH French hard
- a set of bars is used to wash in a standard manner once daily by each operator for five days. From the second day onwards, the depth of the mush on the bar is evaluated by trained assessor using a calibrated scale in mm. The values over 5 days are monitored and the final day value is reported. This is a standardised simulation of use.
- the data presented in Table 4 shows that the experimental bar has significantly higher yield stress and other in use properties .
- the present invention is directed provide for improved soap/detergent formulations having higher water content but retaining the mechanical, structural aspects for satisfactory processability and end user properties such as better feel, lathering, lower sog/mush and satisfactory cleaning.
Landscapes
- 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)
- Detergent Compositions (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU13081/97A AU1308197A (en) | 1996-03-04 | 1996-12-20 | Composition of washing bars |
BR9612536A BR9612536A (en) | 1996-03-04 | 1996-12-20 | Composition for personal or fabric washing |
PL96328764A PL184540B1 (en) | 1996-03-04 | 1996-12-20 | Compositions of solid washing agent in the form of bars or blocks |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9604585.1A GB9604585D0 (en) | 1996-03-04 | 1996-03-04 | Composition |
GB9604585.1 | 1996-03-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997032965A1 true WO1997032965A1 (en) | 1997-09-12 |
Family
ID=10789824
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1996/005878 WO1997032965A1 (en) | 1996-03-04 | 1996-12-20 | Composition of washing bars |
Country Status (10)
Country | Link |
---|---|
CN (1) | CN1170919C (en) |
AU (1) | AU1308197A (en) |
BR (1) | BR9612536A (en) |
CZ (1) | CZ292063B6 (en) |
GB (1) | GB9604585D0 (en) |
HU (1) | HUP9904128A3 (en) |
PL (1) | PL184540B1 (en) |
TR (1) | TR199801276T2 (en) |
WO (1) | WO1997032965A1 (en) |
ZA (1) | ZA97146B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11352594B2 (en) | 2019-02-19 | 2022-06-07 | Conopco, Inc. | Extruded soap bar with high water content |
US11473038B2 (en) | 2019-02-19 | 2022-10-18 | Conopco, Inc. | High water hard bars comprising combination of type and amount of electrolytes |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110021410A1 (en) * | 2009-07-27 | 2011-01-27 | Ecolab Usa Inc. | Novel formulation of a ware washing solid controlling hardness |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB935733A (en) * | 1961-03-16 | 1963-09-04 | Basf Ag | Detergents and cleaning products |
GB1333042A (en) * | 1969-08-22 | 1973-10-10 | Unilever Ltd | Detergent bars |
EP0186148A2 (en) * | 1984-12-24 | 1986-07-02 | The B.F. GOODRICH Company | Toilet soap containing polymeric thickener |
GB2238316A (en) * | 1989-11-24 | 1991-05-29 | Unilever Plc | Soap bars |
WO1994019442A1 (en) * | 1993-02-20 | 1994-09-01 | The Boots Company Plc | Toiletries composition |
-
1996
- 1996-03-04 GB GBGB9604585.1A patent/GB9604585D0/en active Pending
- 1996-12-20 CN CNB961979410A patent/CN1170919C/en not_active Expired - Fee Related
- 1996-12-20 AU AU13081/97A patent/AU1308197A/en not_active Abandoned
- 1996-12-20 WO PCT/EP1996/005878 patent/WO1997032965A1/en active IP Right Grant
- 1996-12-20 BR BR9612536A patent/BR9612536A/en not_active IP Right Cessation
- 1996-12-20 HU HU9904128A patent/HUP9904128A3/en unknown
- 1996-12-20 PL PL96328764A patent/PL184540B1/en not_active IP Right Cessation
- 1996-12-20 CZ CZ19982813A patent/CZ292063B6/en not_active IP Right Cessation
- 1996-12-20 TR TR1998/01276T patent/TR199801276T2/en unknown
-
1997
- 1997-01-08 ZA ZA97146A patent/ZA97146B/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB935733A (en) * | 1961-03-16 | 1963-09-04 | Basf Ag | Detergents and cleaning products |
GB1333042A (en) * | 1969-08-22 | 1973-10-10 | Unilever Ltd | Detergent bars |
EP0186148A2 (en) * | 1984-12-24 | 1986-07-02 | The B.F. GOODRICH Company | Toilet soap containing polymeric thickener |
GB2238316A (en) * | 1989-11-24 | 1991-05-29 | Unilever Plc | Soap bars |
WO1994019442A1 (en) * | 1993-02-20 | 1994-09-01 | The Boots Company Plc | Toiletries composition |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11352594B2 (en) | 2019-02-19 | 2022-06-07 | Conopco, Inc. | Extruded soap bar with high water content |
US11473038B2 (en) | 2019-02-19 | 2022-10-18 | Conopco, Inc. | High water hard bars comprising combination of type and amount of electrolytes |
Also Published As
Publication number | Publication date |
---|---|
TR199801276T2 (en) | 1998-09-21 |
CZ292063B6 (en) | 2003-07-16 |
CZ281398A3 (en) | 1999-02-17 |
HUP9904128A3 (en) | 2001-11-28 |
AU1308197A (en) | 1997-09-22 |
HUP9904128A2 (en) | 2000-04-28 |
GB9604585D0 (en) | 1996-05-01 |
ZA97146B (en) | 1998-07-08 |
PL328764A1 (en) | 1999-02-15 |
CN1170919C (en) | 2004-10-13 |
BR9612536A (en) | 1999-07-20 |
CN1200761A (en) | 1998-12-02 |
PL184540B1 (en) | 2002-11-29 |
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