EP0103325A1 - Scouring cleanser compositions - Google Patents
Scouring cleanser compositions Download PDFInfo
- Publication number
- EP0103325A1 EP0103325A1 EP83201197A EP83201197A EP0103325A1 EP 0103325 A1 EP0103325 A1 EP 0103325A1 EP 83201197 A EP83201197 A EP 83201197A EP 83201197 A EP83201197 A EP 83201197A EP 0103325 A1 EP0103325 A1 EP 0103325A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- abrasive
- micrometers
- composition according
- particles
- weight
- 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.)
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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
- C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
- C11D17/0013—Liquid compositions with insoluble particles in suspension
-
- 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
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/12—Water-insoluble compounds
- C11D3/14—Fillers; Abrasives ; Abrasive compositions; Suspending or absorbing agents not provided for in one single group of C11D3/12; Specific features concerning abrasives, e.g. granulometry or mixtures
Definitions
- the present invention relates to scouring cleanser compositions and more particularly to improved scouring cleanser compositions in liquid form.
- liquid scouring cleansers have been known in the art and have been widely used in the household for the elimination of stubborn soils, greases, burnt materials and stains which are not easily removed by ordinary abrasive- free detergent compositions.
- the abrasive powders hitherto used in commercial household scouring cleansers have particle sizes ranging from below I micron to about 150 or 200 microns, with an average particle size of between 10 and 50 microns, irrespective of the material used as abrasive.
- abrasive powders there is a concentration of particles in the range from 10 to 50 microns diameter, with amounts of particles below and above this range decreasing as the difference from the average particle size increases.
- abrasive powders incorporated in scouring cleansers are in practice made by grinding or crushing minerals, the powders obtained have a wide range of particle sizes. As coarse particles tend to cause scratching and very fine particles are ineffective as abrasives, the commercial producer of abrasive powders used in household scouring cleansers operates a size reduction process in such a wav as to produce an optimum average or mean particle size and as narrow a range of particle sizes centred around this optimum as can be achieved without using a costly classification step.
- the abrasive powder will be included into the compositions as supplied, but it may be advantageous to decrease the amount of very fine particles in the abrasive in order to get better rinse-away properties. It is believed that especially this very fine particle fraction tends to redeposit on glossy surfaces, thus forming a dull film, if rinsing has not been sufficiently repeated after using the abrasive. Reference is made in this respect to our UK Patent 1,581,433.
- the particle size of an abrasive is expressed in detail as a distribution curve on a graph, in which the nominal diameter in microns is plotted against cumulative amounts of material in percent by weight.
- a graph is illustrated in the aforesaid UK Patent 1,581,433 diagram, in which the particle size distributions of four abrasive powders which have been used extensively in household scouring cleansers, namely silica (A), feldspar (B) and calcite (C and D), are given as curves.
- the mean particle sizes of the abrasives concerned are the sizes at which 50% by weight of the particles are larger and 50% are smaller, and are 22, 22, 27 and 15 microns respectively.
- the mean particle size is here to be understood to be the median particle size.
- the present invention provides liquid scouring cleanser compositions comprising a suspending liquid medium, a natural or synthetic detergent surfactant and an abrasive powder with a mean particle size between 4 and 17.5 microns, containing substantially no particles with sizes above 75 microns.
- the particle size distribution is such that less than 10% is below 4, especially below 5 or even 7 microns.
- Preferably also less than 10% is above 40, 30 or even 25 microns.
- the mean particle size to be between 6 and 15 microns or even between 10 and 15 microns.
- at least 80% of the abrasive has a particle size in the range from 5 to 30 microns or even 6 to 25 microns. The percentages refer to percentages by weight.
- Suitable for use as the abrasive material are both natural and synthetic abrasives, for example dolomite, precipitated calcium carbonate (aragonite), feldspar, alumina, silica abrasives, such as quartz and quartzite; preferably an abrasive material is used with a hardness on Moh's scale of from 1 to 4.
- abrasive material is generally present in an amount of from 1 to 65 percent, preferably from 2 to 60 percent by weight of the final composition.
- the liquid medium normally comprises an aqueous medium in which an anionic detergent material is present, preferably in combination with a nonionic or zwitterionic detergent material.
- Suitable anionic surfactants are alkali metal or alkanol amine salts of C 12 -C 18 branched or straight chain alkylaryl sulphonates, of C 12 -C 18 paraffin sulphonates, of C S -C 12 branched or straight chain alkyl sulphates, of C 10 -C 18 alkyl (EO) 1-10 sulphates, of C 10 -C 24 fatty acid soaps etc.
- the amount of anionic surfactant will vary between 0.5 and 15 percent, preferably between 2 and 10 percent by weight of the final composition.
- nonionic or zwitterionic detergent material in the aqueous medium in an amount of from 0.3 to 7 percent, preferably from 0.5 to 5 percent by weight.
- Suitable examples of nonionic detergents are water-soluble condensation products of ethylene- and/or propylene-oxide with linear primary or secondary C 8 -C l8 alcohols, with C 8 -C 18 fatty acid amides or fatty acid alkylol- amides (both mono- and di-amides), with C 9 -C 18 alkyl phenols and so on.
- the alkoxylated C 8 -C 18 fatty acid mono- and di- alkylolamides should contain more than one alkylene oxide unit; for example, they should be condensed with e.g. 2 - 5 moles of alkylene oxide such as ethylene oxide.
- Fatty acid mono- or di-alkylol amides in which the fatty acid radical contains 10 - 16 carbon atoms are also suitable nonionics, such as for instance coco fatty acid mono- or di-ethanol amide.
- Suitable zwitterionic detergents are trialkyl amine oxides having one long alkyl chain (C 8 -C 18 ) and two short (C 1 C 4 ) alkyl chains; betaines and sulphobetaines.
- liquid medium should exhibit Bingham plastic characteristics, thus forming a stable suspending medium for the abrasive material.
- surfactants possibly in combination with other surfactants, are described in British patent specifications 1 167 597, 1 181 607, 1 262 280, 1 303 810, 1 308 190 and 1 418 671.
- a liquid abrasive cleanser also comprises an electrolyte or mixture of electrolytes,such as alkalimetal- chlorides, -nitrates, -silicates, -borates, -carbonates, -sulphates, -orthophosphates, -pyro- and.-poly-phosphates, -citrates, -nitrilotriacetates and mixtures thereof.
- the level of electrolyte will range from 0 to 25 percent, preferably from 5 to 20 percent by weight of the liquid medium without the abrasive materials.
- adjuncts for liquid abrasive cleansers may be included, such as colouring agents, perfumes, fluorescers, hydrotropes, soil-suspending agents, bleaching agents, bleach precursors, enzymes, opacifiers, germicides, humectants, etc.
- the abrasive materials used were four different calcite abrasive materials I, II, III and IV, having a median particle size of 5, 7, 13 and 27 ⁇ respectively. Their particle size distributions are represented in the accompanying drawing.
- abrasive materials were used at a level of 50% by weight in the liquid compositions, with the exception of I, which was used at a level of 45% by weight.
- IV is a material according to the prior art, and is included in the tests as comparison standard.
- Neat liquid scourer is placed on a 4" perspex square. The product is covered with an identical piece of perspex. Holding the two squares between thumb and finger, they are moved over each other and the grittiness of the product between them assessed on a scale. This is from 0 - smooth to 4 - considerably gritty. A series of products were tested in this way against a standard product, viz. current JIF as sold in the UK.
- the fingers can readily feel gritty particles when a cream scourer is rubbed between the thumb and fingers.
- a Tactile Grittiness score can be obtained.
- a thin layer of Carbon Black is smeared onto pieces of white formica (9" x 4") and panel members are requested to clean a section of the formica surface using product on a piece of moist Terry Towelling.
- Panellists are then asked to rank each product tested on a 0 - 4 (nil-considerable) grittiness scale.
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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
Liquid scouring cleanser compositions are disclosed comprising a suspending liquid medium and an abrasive powder having a mean particle size of between 4 and 17.5 micrometers and containing substantially no particles with sizes above 75 micrometers. The compositions combine an improved soft and smooth consistency with good cleaning performance.
Description
- The present invention relates to scouring cleanser compositions and more particularly to improved scouring cleanser compositions in liquid form.
- For many years liquid scouring cleansers have been known in the art and have been widely used in the household for the elimination of stubborn soils, greases, burnt materials and stains which are not easily removed by ordinary abrasive- free detergent compositions.
- Several problems are encountered in formulating liquid scouring cleansers. In pourable liquid detergent compositions containing solid particles of abrasive material, the latter tend to settle out on storage, which is inconvenient to the consumer, who has to re-disperse them at the time of use. In the prior art this problem has been approached by providing a medium which exhibits Bingham plastic characteristics. Examples of such media have, inter alia, been described in UK Patents 1,167,597; 1,181,607; 1,262,280; 1,303,810; 1,308,190 and 1,418,671. Other problems are related to the particular choice of the abrasive material. Such a choice often constitutes a compromise between cleaning efficacy and minimizing the risk of damage to delicate surfaces. In general hard abrasives and relatively large particles are satisfactory for the removal of difficult soils but may cause scratching, whereas softer abrasives and smaller particles cause less scratching and other abrasion of substrates from which soil has to be removed. It has long been recognized that a careful choice of the particle size range of the abrasive is of great importance for a good and effective cleanser.
- The abrasive powders hitherto used in commercial household scouring cleansers have particle sizes ranging from below I micron to about 150 or 200 microns, with an average particle size of between 10 and 50 microns, irrespective of the material used as abrasive. In such abrasive powders there is a concentration of particles in the range from 10 to 50 microns diameter, with amounts of particles below and above this range decreasing as the difference from the average particle size increases.
- As abrasive powders incorporated in scouring cleansers are in practice made by grinding or crushing minerals, the powders obtained have a wide range of particle sizes. As coarse particles tend to cause scratching and very fine particles are ineffective as abrasives, the commercial producer of abrasive powders used in household scouring cleansers operates a size reduction process in such a wav as to produce an optimum average or mean particle size and as narrow a range of particle sizes centred around this optimum as can be achieved without using a costly classification step.
- Normally the abrasive powder will be included into the compositions as supplied, but it may be advantageous to decrease the amount of very fine particles in the abrasive in order to get better rinse-away properties. It is believed that especially this very fine particle fraction tends to redeposit on glossy surfaces, thus forming a dull film, if rinsing has not been sufficiently repeated after using the abrasive. Reference is made in this respect to our UK Patent 1,581,433.
- The particle size of an abrasive is expressed in detail as a distribution curve on a graph, in which the nominal diameter in microns is plotted against cumulative amounts of material in percent by weight. Such a graph is illustrated in the aforesaid UK Patent 1,581,433 diagram, in which the particle size distributions of four abrasive powders which have been used extensively in household scouring cleansers, namely silica (A), feldspar (B) and calcite (C and D), are given as curves. The mean particle sizes of the abrasives concerned are the sizes at which 50% by weight of the particles are larger and 50% are smaller, and are 22, 22, 27 and 15 microns respectively. The mean particle size is here to be understood to be the median particle size.
- It has now been found that if in the formulation of a liquid scouring cleanser, a low mean particle size abrasive is used, particularly with a very sharp particle size distribution a product is obtained which, without a substantial loss in cleaning efficiency does not produce visible scratching, has good rinse-away properties and does not feel gritty, providing the consumer with a very soft and smooth touch during use.
- Consequently, in its broadest aspects, the present invention provides liquid scouring cleanser compositions comprising a suspending liquid medium, a natural or synthetic detergent surfactant and an abrasive powder with a mean particle size between 4 and 17.5 microns, containing substantially no particles with sizes above 75 microns. Preferably, the particle size distribution is such that less than 10% is below 4, especially below 5 or even 7 microns. Preferably also less than 10% is above 40, 30 or even 25 microns. It is preferable for the mean particle size to be between 6 and 15 microns or even between 10 and 15 microns. Preferably at least 80% of the abrasive has a particle size in the range from 5 to 30 microns or even 6 to 25 microns. The percentages refer to percentages by weight.
- Suitable for use as the abrasive material are both natural and synthetic abrasives, for example dolomite, precipitated calcium carbonate (aragonite), feldspar, alumina, silica abrasives, such as quartz and quartzite; preferably an abrasive material is used with a hardness on Moh's scale of from 1 to 4. Particularly suitable is calcite, for instance limestone, chalk or marble, such as those forms of calcite referred to in UK Patent 1,345,119. The abrasive material is generally present in an amount of from 1 to 65 percent, preferably from 2 to 60 percent by weight of the final composition.
- The liquid medium normally comprises an aqueous medium in which an anionic detergent material is present, preferably in combination with a nonionic or zwitterionic detergent material. Suitable anionic surfactants are alkali metal or alkanol amine salts of C12-C18 branched or straight chain alkylaryl sulphonates, of C12-C18 paraffin sulphonates, of CS-C12 branched or straight chain alkyl sulphates, of C10-C18 alkyl (EO)1-10 sulphates, of C10-C24 fatty acid soaps etc. In general the amount of anionic surfactant will vary between 0.5 and 15 percent, preferably between 2 and 10 percent by weight of the final composition.
- It is often desirable to include also a nonionic or zwitterionic detergent material in the aqueous medium in an amount of from 0.3 to 7 percent, preferably from 0.5 to 5 percent by weight. Suitable examples of nonionic detergents are water-soluble condensation products of ethylene- and/or propylene-oxide with linear primary or secondary C8-Cl8 alcohols, with C8-C18 fatty acid amides or fatty acid alkylol- amides (both mono- and di-amides), with C9-C18 alkyl phenols and so on. The alkoxylated C8-C18 fatty acid mono- and di- alkylolamides should contain more than one alkylene oxide unit; for example, they should be condensed with e.g. 2 - 5 moles of alkylene oxide such as ethylene oxide. Fatty acid mono- or di-alkylol amides in which the fatty acid radical contains 10 - 16 carbon atoms are also suitable nonionics, such as for instance coco fatty acid mono- or di-ethanol amide. Suitable zwitterionic detergents are trialkyl amine oxides having one long alkyl chain (C8-C18) and two short (C1 C4) alkyl chains; betaines and sulphobetaines.
- It is highly desirable that the liquid medium should exhibit Bingham plastic characteristics, thus forming a stable suspending medium for the abrasive material. Such media using the above-mentioned surfactants, possibly in combination with other surfactants, are described in British patent specifications 1 167 597, 1 181 607, 1 262 280, 1 303 810, 1 308 190 and 1 418 671. It is often desirable that a liquid abrasive cleanser also comprises an electrolyte or mixture of electrolytes,such as alkalimetal- chlorides, -nitrates, -silicates, -borates, -carbonates, -sulphates, -orthophosphates, -pyro- and.-poly-phosphates, -citrates, -nitrilotriacetates and mixtures thereof. The level of electrolyte will range from 0 to 25 percent, preferably from 5 to 20 percent by weight of the liquid medium without the abrasive materials.
- Other adjuncts for liquid abrasive cleansers may be included, such as colouring agents, perfumes, fluorescers, hydrotropes, soil-suspending agents, bleaching agents, bleach precursors, enzymes, opacifiers, germicides, humectants, etc.
- The invention will further be described by way of example.
-
- The abrasive materials used were four different calcite abrasive materials I, II, III and IV, having a median particle size of 5, 7, 13 and 27µ respectively. Their particle size distributions are represented in the accompanying drawing.
- These abrasive materials were used at a level of 50% by weight in the liquid compositions, with the exception of I, which was used at a level of 45% by weight. IV is a material according to the prior art, and is included in the tests as comparison standard.
- The following tests were carried out:
- Neat liquid scourer is placed on a 4" perspex square. The product is covered with an identical piece of perspex. Holding the two squares between thumb and finger, they are moved over each other and the grittiness of the product between them assessed on a scale. This is from 0 - smooth to 4 - considerably gritty. A series of products were tested in this way against a standard product, viz. current JIF as sold in the UK.
- The fingers can readily feel gritty particles when a cream scourer is rubbed between the thumb and fingers. By asking a panel of people to feel product between their fingers and ranking them as smooth, slightly gritty - to considerably gritty, on a 0 - 4 scale, a Tactile Grittiness score can be obtained.
- A thin layer of Carbon Black is smeared onto pieces of white formica (9" x 4") and panel members are requested to clean a section of the formica surface using product on a piece of moist Terry Towelling.
- Panellists are then asked to rank each product tested on a 0 - 4 (nil-considerable) grittiness scale.
- Testing was carried out on the W.I.R.A. using 64 rubs, with no head weight and a terry towelling head cover.
- Assessments were made by specular reflection at an angle of 45°C using the Solartron.
- 20 mls of the product was squirted around a stainless steel sink and rinsed away with a constant flow of water at 25°C.
- The following results were obtained:
- Feel of grittiness ranking (average of 8 assessments)(scale: 0 = nil to 4 = considerable grittiness)
- Tactile feel of grittiness ranking (average of 8 assessments)(scale: 0 = nil to 4 = considerable grittiness)
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-
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- The products were also assessed by a panel as to their overall cleaning performance, and no significant loss in perceived efficiency was obtained between products I - III as compared with IV.
Claims (15)
1. A liquid scouring cleanser composition comprising a suspending liquid medium, a detergent surfactant and an abrasive powder, characterized in that the abrasive powder has a mean particle size of between 4 and 17.5 micrometers and contains substantially no particles with sizes above 75 micrometers.
2. A cleanser composition according to claim 1, characterized in that less than 10% by Weight of the particles of the abrasive are of size below 4 micrometers.
3. A cleanser composition according to claim 1 or 2, characterized in that less than 10% by weight of the particles of the abrasive are of size above 40 micrometers.
4. A cleanser composition according to any preceding claim, characterized in that less than 10% by weight of the particles of the abrasive are of size below 5 micrometers.
5. A cleanser composition according to any preceding claim, characterized in that less than 10% by weight of the particles of the abrasive are of size above 30 micrometers.
6. A cleanser composition according to any preceding claim, characterized in that at least 80% by weight of the particles of the abrasive are of size between 5 and 30 micrometers.
7. A cleanser composition according to any preceding claim, characterized in that less than 10% by weight of the particles of the abrasive are of size above 25 micrometers.
8. A cleanser composition according to any preceding claim, characterized in that at least 80% by weight of the particles of the abrasive are of size between 6 and 25 micrometers.
9. A cleanser composition according to any preceding claim, characterized in that less than 10% by weight of the particles of the abrasive are of size below 7 micrometers.
10. A cleanser composition according to any preceding claim, characterized in that the abrasive powder has a mean particle size of between 6 and 15 micrometers.
11. A cleanser composition according to any preceding claim, characterized in that the abrasive powder has a mean particle size of between 10 and 15 micrometers.
12. A cleanser composition according to any preceding claim, characterized in that the abrasive powder has a Mohs hardness in the range from 1 to 4.
13. A cleanser composition according to any preceding claim, characterized in that the abrasive is calcite.
14. A cleanser composition according to any preceding claim, characterized in that it comprises 1 to 65% by weight of the total composition of the abrasive powder.
15. A cleanser composition according to any preceding claim, characterized in that it comprises 2 to 60% by weight of the total composition of the abrasive powder.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8223997 | 1982-08-20 | ||
GB8223997 | 1982-08-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0103325A1 true EP0103325A1 (en) | 1984-03-21 |
Family
ID=10532427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83201197A Withdrawn EP0103325A1 (en) | 1982-08-20 | 1983-08-16 | Scouring cleanser compositions |
Country Status (14)
Country | Link |
---|---|
EP (1) | EP0103325A1 (en) |
JP (1) | JPS5984999A (en) |
AU (1) | AU1804283A (en) |
BR (1) | BR8304499A (en) |
CA (1) | CA1205714A (en) |
ES (1) | ES525066A0 (en) |
GB (1) | GB2125428B (en) |
GR (1) | GR78687B (en) |
IN (1) | IN158390B (en) |
NO (1) | NO832990L (en) |
NZ (1) | NZ205274A (en) |
PT (1) | PT77222B (en) |
ZA (1) | ZA836142B (en) |
ZW (1) | ZW18183A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2564104A1 (en) * | 1984-05-10 | 1985-11-15 | Saint Marc Lessives | Scouring cream and process for its preparation |
EP0214540A2 (en) * | 1985-09-11 | 1987-03-18 | Unilever N.V. | Liquid abrasive cleaner compositions |
US6366652B1 (en) | 1999-06-10 | 2002-04-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for using a VM tone to prevent a voice announcement in a group call |
WO2013078949A1 (en) * | 2011-12-01 | 2013-06-06 | Unilever N.V. | Liquid composition for cleaning of head surfaces |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8328991D0 (en) * | 1983-10-31 | 1983-11-30 | Unilever Plc | Liquid scouring compositions |
JPS63189499A (en) * | 1987-01-30 | 1988-08-05 | 花王株式会社 | Liquid cleanser composition |
US5854293A (en) * | 1996-09-23 | 1998-12-29 | The Procter & Gamble Company | Liquid personal cleansing composition which contain a lipophilic skin moisturizing agent comprised of relatively large droplets |
US6066608A (en) * | 1996-09-23 | 2000-05-23 | The Procter & Gamble Company | Liquid personal cleansing composition which contain a lipophilic skin moisturing agent comprised of relatively large droplets |
JP2001003098A (en) * | 1999-06-24 | 2001-01-09 | Toho Chem Ind Co Ltd | Detergent composition for removing fine particles excellent in rinsability |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2402225A1 (en) * | 1974-01-07 | 1975-07-17 | Unilever Nv | POURABLE, FLOWABLE MASS |
GB1534680A (en) * | 1977-10-14 | 1978-12-06 | Colgate Palmolive Co | Cleaning compositions |
US4181633A (en) * | 1976-12-01 | 1980-01-01 | Colgate-Palmolive Company | Liquid scouring cream containing calcium metasilicate |
GB2055118A (en) * | 1979-06-25 | 1981-02-25 | Polymer Technology Corp | Cleaning contact lenses |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3623990A (en) * | 1967-06-26 | 1971-11-30 | Procter & Gamble | Liquid detergent composition |
GB1454895A (en) * | 1972-11-15 | 1976-11-03 | Unilever Ltd | Scouring powders |
US4100096A (en) * | 1976-06-04 | 1978-07-11 | Addressograph Multigraph Corp. | Cleaner for hydrophilic metal surfaces of lithographic duplicators |
-
1983
- 1983-08-15 NZ NZ205274A patent/NZ205274A/en unknown
- 1983-08-16 AU AU18042/83A patent/AU1804283A/en not_active Abandoned
- 1983-08-16 EP EP83201197A patent/EP0103325A1/en not_active Withdrawn
- 1983-08-17 GR GR72240A patent/GR78687B/el unknown
- 1983-08-17 ZW ZW181/83A patent/ZW18183A1/en unknown
- 1983-08-18 GB GB08322262A patent/GB2125428B/en not_active Expired
- 1983-08-18 IN IN255/BOM/83A patent/IN158390B/en unknown
- 1983-08-19 BR BR8304499A patent/BR8304499A/en not_active IP Right Cessation
- 1983-08-19 CA CA000434993A patent/CA1205714A/en not_active Expired
- 1983-08-19 ES ES525066A patent/ES525066A0/en active Granted
- 1983-08-19 JP JP58150429A patent/JPS5984999A/en active Pending
- 1983-08-19 PT PT77222A patent/PT77222B/en not_active IP Right Cessation
- 1983-08-19 NO NO832990A patent/NO832990L/en unknown
- 1983-08-19 ZA ZA836142A patent/ZA836142B/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2402225A1 (en) * | 1974-01-07 | 1975-07-17 | Unilever Nv | POURABLE, FLOWABLE MASS |
US4181633A (en) * | 1976-12-01 | 1980-01-01 | Colgate-Palmolive Company | Liquid scouring cream containing calcium metasilicate |
GB1534680A (en) * | 1977-10-14 | 1978-12-06 | Colgate Palmolive Co | Cleaning compositions |
GB2055118A (en) * | 1979-06-25 | 1981-02-25 | Polymer Technology Corp | Cleaning contact lenses |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2564104A1 (en) * | 1984-05-10 | 1985-11-15 | Saint Marc Lessives | Scouring cream and process for its preparation |
EP0214540A2 (en) * | 1985-09-11 | 1987-03-18 | Unilever N.V. | Liquid abrasive cleaner compositions |
EP0214540A3 (en) * | 1985-09-11 | 1988-05-25 | Unilever Nv | Liquid abrasive cleaner compositions |
US6366652B1 (en) | 1999-06-10 | 2002-04-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for using a VM tone to prevent a voice announcement in a group call |
WO2013078949A1 (en) * | 2011-12-01 | 2013-06-06 | Unilever N.V. | Liquid composition for cleaning of head surfaces |
EP2785822A4 (en) * | 2011-12-01 | 2015-12-16 | Unilever Nv | Liquid composition for cleaning of head surfaces |
Also Published As
Publication number | Publication date |
---|---|
ES8507172A1 (en) | 1985-08-16 |
GB8322262D0 (en) | 1983-09-21 |
ZA836142B (en) | 1985-03-27 |
CA1205714A (en) | 1986-06-10 |
PT77222B (en) | 1986-07-11 |
ZW18183A1 (en) | 1985-03-06 |
AU1804283A (en) | 1984-02-23 |
NZ205274A (en) | 1986-01-24 |
NO832990L (en) | 1984-02-21 |
GR78687B (en) | 1984-09-27 |
GB2125428B (en) | 1987-03-25 |
PT77222A (en) | 1983-09-01 |
BR8304499A (en) | 1984-04-03 |
GB2125428A (en) | 1984-03-07 |
JPS5984999A (en) | 1984-05-16 |
IN158390B (en) | 1986-11-08 |
ES525066A0 (en) | 1985-08-16 |
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