CA1329751C - Acidic liquid cleaning composition - Google Patents
Acidic liquid cleaning compositionInfo
- Publication number
- CA1329751C CA1329751C CA000543417A CA543417A CA1329751C CA 1329751 C CA1329751 C CA 1329751C CA 000543417 A CA000543417 A CA 000543417A CA 543417 A CA543417 A CA 543417A CA 1329751 C CA1329751 C CA 1329751C
- Authority
- CA
- Canada
- Prior art keywords
- acid
- composition according
- detergent
- composition
- 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.)
- Expired - Fee Related
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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/75—Amino oxides
-
- 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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/38—Cationic compounds
- C11D1/40—Monoamines or polyamines; Salts thereof
-
- 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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/38—Cationic compounds
- C11D1/62—Quaternary ammonium compounds
-
- 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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/88—Ampholytes; Electroneutral compounds
- C11D1/90—Betaines
-
- 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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/88—Ampholytes; Electroneutral compounds
- C11D1/92—Sulfobetaines ; Sulfitobetaines
-
- 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
- C11D3/40—Dyes ; Pigments
Abstract
ABSTRACT
An acidic, aqueous liquid detergent composition, especially suitable for toilet bowl cleaning, is provided with a colour-change ingredient to enable the user to monitor the concentration of the composition upon dilution with water when using the product.
By including a detergent-active compound which exists in cationic form in the acid composition and a dye which undergoes a pH-dependent colour change in the acid pH range, the required colour change indication is obtained.
An acidic, aqueous liquid detergent composition, especially suitable for toilet bowl cleaning, is provided with a colour-change ingredient to enable the user to monitor the concentration of the composition upon dilution with water when using the product.
By including a detergent-active compound which exists in cationic form in the acid composition and a dye which undergoes a pH-dependent colour change in the acid pH range, the required colour change indication is obtained.
Description
C 7084 (R~
13~17~1 "ACIDIC LIQUID CLEANING COMPOSITION"
The present invention relates to aqueou~, acidic liquid cleaning compo~itions which are 3uitable for cleaning hard, acid-re~iqtant surface~ such a3 metallic, vitreous and ceramic surface~. They are especially ~uitable for cleaning toilet bowl~.
Acidic liquid toilet bowl cleaning compo4itions are well known in the art. They u3ually conqist of an aqueou~ solution of a strong acid, to which various de~irable additive3 have been added, such as detergent-active compound~, germicides, perfumes, corrosion inhibitor~, colouring agents and so on. As detergent-active compounds anionic, nonioniç and cationic detergents have been su~gested fcr inclusion in quch acidic liquid toilet bowl cleaning compo~ition~. When desired, a plea~ing colour i~ imparted to such compo~itions by adding a suitable dye, such as a blue dye. Such compo~ition~ are particularly effective in removing toilet ~cale deposits, derived from the water ~upply to the toilet.
~3 In order to enable the user of these composition~ to monitor the concentration of ~uch products in the water upon dilution when u3ing these product~, it would be de~irable to include an ingredient giving the u~er a readily appreciated rating of the concentration present. Such an ingredient would be a pH indicator, the colour of which changes upon dilution, as i3 for instance suggeAted for liquid detergents in Ga Patent Specification 1 313 180.
However, we have found that the performance of quch a colour change providing ingredient in acidic toi~et ~ bowl cleaner~ i8 related to the nature of the -~ 35 detergent-active compound pre~ent in the composit~ons, :.
:; ~
' '`-: ,:
": ~; ' ' ' , . : ,, . ,.
~ ' ' .
- C 7084 (~) 2 13297~
; ~
and that such a colour change is only obtained if the compo~i~ion contains a detergent-active compound that exists in a cationic form under the acidic conditions of the co~po3ition. Cationic surfactants are particularly advantageous in acidic toilet cleaning ; compo~it~ons because of their known germicidal properties.
Consequently, the pre~ent invention in it3 broadest aapect~ relate~ to an aqueouY, acidic liquid cleaning co~position comprising an aqueous ~olution of a strong acid, a detergent-active compound and a dye, which i~
characterised by the fact that the detergent-active compound exists in a cationic form in the composition and that the dye undergoes a pH-dependent colour change in the acid pH range.
Detergent-active compounds which are cationic under the acidic conditions in the composition are e.g. permanent cationics ~uch as the quaternary ammonium and imidazoline compounds, or tertiary amines, tertiary ~ amine oxides, amine ethoxylates, betaines and ; sulphobetaines. Specific examples are coconut dimethyl l amine-oxide, coconut trimethyl quaternary ammonium - 25 chloride, coconut sulphobetaine.
In general, the compositions contain the cationic :
detergent-active compound in an amount of 0.1-10% by weight. Mixtureq of several cationic detergents, as well as of a cationic and a nonionic detergent may alqo be used.
The dyestuffs quitable or use according to the present invention are those which undergo a pH-dependent colour ' 35 change in the acid pH range, i.e. for the present -~ invention in the range of 2-6 in aqueous solution.
:-:
. .
: ~
.' ~
::
, : ' :: ' ". :
::
::
- C 7084 (R) ~ 3 ~ 32~7~1 . :
Typical examples of ~uch dye~tuffs are the triarylmethane types quch as Acid Blue 1 (CI 420~5), Acid Blue 9 (CI 42090), Acid Violet 17 (CI 42650) and Mordant 31ue 1 (CI 43830)o In general, the compo~itions contain from 0.0001-1~ by weight of the dyestuff.
Optionally, other dyestuffs which do not undergo a pH-dependent colour change may additionally be included so ` ~ as to achieve a change to a desired colour.
As strong acid, inorganic acid~ ~uch as hydrochloric acid, sulphuric acid, nitric acid and ~ulphamic acid are quitable: the compositions contain the acid in an amount of 0.5-25% by weight. The pH of the compositions of the present invention i~ below 2, and in most useful cases below 1.
Other optional ingredients may also be included, such as perfumeq, corrosion inhibitors, viscosity modifiers, electrolyte salts, small amounts of anionic detergents, ~olvents, hydrotropes etc. Thickened compositions are especially desirable ~ince they remain in contact with vertical and inclined Qurfaces of the toilet for a . !
longer period of time and give improved cleaning. The compo5~tion~ of the invention can be thickened by surfactants, by polymeric materials such as xanthan gum , polyacrylate~ and by inorganic thickeners quch as 8~ lica~ and clays.
Examples 1-13 The following table qhowq a number of compo~ition~ of the present invention which undergo colour change upon ; dilution with water. The figures are percentageq by ~ weight.
, !
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: .
:
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' '' ' '' ' ' ' ~: C 7()84 ( R ) ", ~On 132~7~
o ~ o o 0 I I o O I I I ~ D
U') '' O ~ O
,'~1 o I I I I I ~ I I I O O
O
';................... O ~ O
,,_l O
-I I I I ~ I I I I O O I I I ~ ,~
O
. ~ . O N O
:~:O O ~
.~ _l -1 11 ~ I I I II O I I I O O ~
r~
'~ ~ O ~ 0 ~;,C" ~ ~ I I o I I O I
O ,~ O
O
o I o I I C~ Q
U') O
O
I O I I I --I Q
U~
O
: O ~
~ I a) I I ~1 1 1 1 1 o I o I I I ~1 q : ~r ., O
,~" O ~ O
O
:,,''~ O ~I O
o o I I I :~ Q
, U~
tO
~ o o ~3 . a~ Y o '`. o ~ ,1 o ¦: .! 1~ ~ 0 5~ Q- U O
: ';O
~ ~~ t --I I I ~ I I I I I O O I I I ~ Q ll ll ll 11 `; u~ Q ~:L V O
O
:, n ~ O
0 1 1 /~ I I I I I O O I I I ~I Q
:, ~ ~ C
0 0 JJ ~ ~ ~
. ,:` _I ~ E~ V Q~ ~a :, Q ~ ~ ~ OO ^ ~
`1 E X ~ o ~1 ~r) C ~ ~ 3 0 : ~ ~ o c ~ ~1 o0 ~ o x o o ~ ~ O O ~a~
:: lil al E ~1 a~ i~ E
C E S C: O
V E Itl.LJ ~I V ~ H H
tJ U V ~ r ~a~O ~ a~ v cr tO 0 r ~ O C ~ x E Q~ C _ O V V q) E Q~ E~ S ~ Q ~ a ~ m s ~
v ~ ~ ~ O V
C L1 E r~ c ~ ~ _I ri v ~ o 3 ~ m m ~
o s s I I I o C~ s 0 '''`~~ ~ ~ o o o ~1 1 ~ ~ ro ~ ~ ~ O
'` "~`~ _I ~ U U V ~ ~ ~ rl.~1 ~1 rl ~ ~
o o o ~ t) v V U O O
,~
13~17~1 "ACIDIC LIQUID CLEANING COMPOSITION"
The present invention relates to aqueou~, acidic liquid cleaning compo~itions which are 3uitable for cleaning hard, acid-re~iqtant surface~ such a3 metallic, vitreous and ceramic surface~. They are especially ~uitable for cleaning toilet bowl~.
Acidic liquid toilet bowl cleaning compo4itions are well known in the art. They u3ually conqist of an aqueou~ solution of a strong acid, to which various de~irable additive3 have been added, such as detergent-active compound~, germicides, perfumes, corrosion inhibitor~, colouring agents and so on. As detergent-active compounds anionic, nonioniç and cationic detergents have been su~gested fcr inclusion in quch acidic liquid toilet bowl cleaning compo~ition~. When desired, a plea~ing colour i~ imparted to such compo~itions by adding a suitable dye, such as a blue dye. Such compo~ition~ are particularly effective in removing toilet ~cale deposits, derived from the water ~upply to the toilet.
~3 In order to enable the user of these composition~ to monitor the concentration of ~uch products in the water upon dilution when u3ing these product~, it would be de~irable to include an ingredient giving the u~er a readily appreciated rating of the concentration present. Such an ingredient would be a pH indicator, the colour of which changes upon dilution, as i3 for instance suggeAted for liquid detergents in Ga Patent Specification 1 313 180.
However, we have found that the performance of quch a colour change providing ingredient in acidic toi~et ~ bowl cleaner~ i8 related to the nature of the -~ 35 detergent-active compound pre~ent in the composit~ons, :.
:; ~
' '`-: ,:
": ~; ' ' ' , . : ,, . ,.
~ ' ' .
- C 7084 (~) 2 13297~
; ~
and that such a colour change is only obtained if the compo~i~ion contains a detergent-active compound that exists in a cationic form under the acidic conditions of the co~po3ition. Cationic surfactants are particularly advantageous in acidic toilet cleaning ; compo~it~ons because of their known germicidal properties.
Consequently, the pre~ent invention in it3 broadest aapect~ relate~ to an aqueouY, acidic liquid cleaning co~position comprising an aqueous ~olution of a strong acid, a detergent-active compound and a dye, which i~
characterised by the fact that the detergent-active compound exists in a cationic form in the composition and that the dye undergoes a pH-dependent colour change in the acid pH range.
Detergent-active compounds which are cationic under the acidic conditions in the composition are e.g. permanent cationics ~uch as the quaternary ammonium and imidazoline compounds, or tertiary amines, tertiary ~ amine oxides, amine ethoxylates, betaines and ; sulphobetaines. Specific examples are coconut dimethyl l amine-oxide, coconut trimethyl quaternary ammonium - 25 chloride, coconut sulphobetaine.
In general, the compositions contain the cationic :
detergent-active compound in an amount of 0.1-10% by weight. Mixtureq of several cationic detergents, as well as of a cationic and a nonionic detergent may alqo be used.
The dyestuffs quitable or use according to the present invention are those which undergo a pH-dependent colour ' 35 change in the acid pH range, i.e. for the present -~ invention in the range of 2-6 in aqueous solution.
:-:
. .
: ~
.' ~
::
, : ' :: ' ". :
::
::
- C 7084 (R) ~ 3 ~ 32~7~1 . :
Typical examples of ~uch dye~tuffs are the triarylmethane types quch as Acid Blue 1 (CI 420~5), Acid Blue 9 (CI 42090), Acid Violet 17 (CI 42650) and Mordant 31ue 1 (CI 43830)o In general, the compo~itions contain from 0.0001-1~ by weight of the dyestuff.
Optionally, other dyestuffs which do not undergo a pH-dependent colour change may additionally be included so ` ~ as to achieve a change to a desired colour.
As strong acid, inorganic acid~ ~uch as hydrochloric acid, sulphuric acid, nitric acid and ~ulphamic acid are quitable: the compositions contain the acid in an amount of 0.5-25% by weight. The pH of the compositions of the present invention i~ below 2, and in most useful cases below 1.
Other optional ingredients may also be included, such as perfumeq, corrosion inhibitors, viscosity modifiers, electrolyte salts, small amounts of anionic detergents, ~olvents, hydrotropes etc. Thickened compositions are especially desirable ~ince they remain in contact with vertical and inclined Qurfaces of the toilet for a . !
longer period of time and give improved cleaning. The compo5~tion~ of the invention can be thickened by surfactants, by polymeric materials such as xanthan gum , polyacrylate~ and by inorganic thickeners quch as 8~ lica~ and clays.
Examples 1-13 The following table qhowq a number of compo~ition~ of the present invention which undergo colour change upon ; dilution with water. The figures are percentageq by ~ weight.
, !
` '``
: .
:
' ~ ' ` . ' .
' '' ' '' ' ' ' ~: C 7()84 ( R ) ", ~On 132~7~
o ~ o o 0 I I o O I I I ~ D
U') '' O ~ O
,'~1 o I I I I I ~ I I I O O
O
';................... O ~ O
,,_l O
-I I I I ~ I I I I O O I I I ~ ,~
O
. ~ . O N O
:~:O O ~
.~ _l -1 11 ~ I I I II O I I I O O ~
r~
'~ ~ O ~ 0 ~;,C" ~ ~ I I o I I O I
O ,~ O
O
o I o I I C~ Q
U') O
O
I O I I I --I Q
U~
O
: O ~
~ I a) I I ~1 1 1 1 1 o I o I I I ~1 q : ~r ., O
,~" O ~ O
O
:,,''~ O ~I O
o o I I I :~ Q
, U~
tO
~ o o ~3 . a~ Y o '`. o ~ ,1 o ¦: .! 1~ ~ 0 5~ Q- U O
: ';O
~ ~~ t --I I I ~ I I I I I O O I I I ~ Q ll ll ll 11 `; u~ Q ~:L V O
O
:, n ~ O
0 1 1 /~ I I I I I O O I I I ~I Q
:, ~ ~ C
0 0 JJ ~ ~ ~
. ,:` _I ~ E~ V Q~ ~a :, Q ~ ~ ~ OO ^ ~
`1 E X ~ o ~1 ~r) C ~ ~ 3 0 : ~ ~ o c ~ ~1 o0 ~ o x o o ~ ~ O O ~a~
:: lil al E ~1 a~ i~ E
C E S C: O
V E Itl.LJ ~I V ~ H H
tJ U V ~ r ~a~O ~ a~ v cr tO 0 r ~ O C ~ x E Q~ C _ O V V q) E Q~ E~ S ~ Q ~ a ~ m s ~
v ~ ~ ~ O V
C L1 E r~ c ~ ~ _I ri v ~ o 3 ~ m m ~
o s s I I I o C~ s 0 '''`~~ ~ ~ o o o ~1 1 ~ ~ ro ~ ~ ~ O
'` "~`~ _I ~ U U V ~ ~ ~ rl.~1 ~1 rl ~ ~
o o o ~ t) v V U O O
,~
Claims (9)
1. An acidic, aqueous liquid cleaning composition having a pH of below 2, comprising in an aqueous medium from 0.1-10% by weight of a detergent-active compound which exists in a cationic form in the acid composition, from 0.5-25% by weight of a strong acid and from 0.001-1% by weight of a dye which undergoes a pH-dependent colour change in the pH range of 2-6.
2. A composition according to claim 1, wherein the detergent active compound is selected from the group consisting of quaternary ammonium compounds, quaternary imidazoline compounds, tertiary amines, tertiary amine oxides, amine ethoxylates, betaines and sulphobetaines.
3. A composition according to claim 1, wherein the detergent-active compound is selected from the group consisting of coconut dimethyl amine oxide, coconut trimethyl quaternary ammonium chloride, coconut sulphobetaine and tallow amine ethoxylate with 10 moles of ethylene oxide.
4. A composition according to claim 1, wherein the strong acid is selected from the group consisting of hydrochloric acid, sulphuric acid, nitric acid and sulphamic acid.
5. A composition according to claim 1, wherein the dye is selected from the group consisting of Acid ?lue 1, Acid ?lue 9, Acid Violet 17 and Mordant ?lue 1.
6. A composition according to claim 1, further including a thickening agent selected from the group of xanthan gums, polyacrylates, silicas and clays.
7. A composition according to claim 1, claim 2 or claim 3 wherein the amount of the detergent-active compound is from 1 to 10% by weight of the composition.
8. A composition according to claim 1, claim 2 or claim 3 having a pH of below 1.
9. A composition according to claim 1, claim 2 or claim 3 wherein the amount by weight of the acid in the composition exceeds the amount by weight of detergent-active compound.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8619391 | 1986-08-08 | ||
| GB868619391A GB8619391D0 (en) | 1986-08-08 | 1986-08-08 | Acidic liquid cleaning composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1329751C true CA1329751C (en) | 1994-05-24 |
Family
ID=10602444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000543417A Expired - Fee Related CA1329751C (en) | 1986-08-08 | 1987-07-30 | Acidic liquid cleaning composition |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0255978A3 (en) |
| JP (1) | JPS6343999A (en) |
| AU (1) | AU607708B2 (en) |
| BR (1) | BR8703992A (en) |
| CA (1) | CA1329751C (en) |
| GB (1) | GB8619391D0 (en) |
| ZA (1) | ZA875848B (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4743395A (en) * | 1986-09-12 | 1988-05-10 | The Drackett Company | Thickened acid cleaner compositions containing quaternary ammonium germicides and having improved thermal stability |
| JPH01240600A (en) * | 1988-03-18 | 1989-09-26 | Seiwa Kogyo Kk | Cleaning agent for toilet |
| GB9000028D0 (en) * | 1990-01-02 | 1990-03-07 | Shell Int Research | Cleaning of equipment used in a liquid phase oxidation process |
| FR2717108B1 (en) * | 1994-03-14 | 1996-04-26 | Sgb | Cleaning process, range of cleaning products and products used in the process. |
| US5691291A (en) * | 1994-10-28 | 1997-11-25 | The Procter & Gamble Company | Hard surface cleaning compositions comprising protonated amines and amine oxide surfactants |
| EP0788536A1 (en) * | 1994-10-28 | 1997-08-13 | The Procter & Gamble Company | Hard surface cleaning compositions comprising protonated amines and amine oxide surfactants |
| EP0754749A1 (en) * | 1995-07-20 | 1997-01-22 | The Procter & Gamble Company | Fabric softeners containing water soluble dyes for reduced staining |
| US5965514A (en) * | 1996-12-04 | 1999-10-12 | The Procter & Gamble Company | Compositions for and methods of cleaning and disinfecting hard surfaces |
| US6331515B1 (en) * | 2001-08-06 | 2001-12-18 | Colgate-Palmolive Co. | Color changing liquid cleaning composition comprising red dyes |
| GB0305010D0 (en) * | 2003-03-05 | 2003-04-09 | Unilever Plc | Changing colours |
| GB0314211D0 (en) * | 2003-06-18 | 2003-07-23 | Unilever Plc | Laundry treatment compositions |
| US7651989B2 (en) | 2003-08-29 | 2010-01-26 | Kimberly-Clark Worldwide, Inc. | Single phase color change agents |
| CN101035887B (en) * | 2004-10-04 | 2011-03-09 | 宝洁公司 | A composition with a metal-complexing dye and surfactant |
| US8067350B2 (en) | 2005-12-15 | 2011-11-29 | Kimberly-Clark Worldwide, Inc. | Color changing cleansing composition |
| JP4884768B2 (en) * | 2005-12-28 | 2012-02-29 | 花王株式会社 | Hard surface cleaner |
| JP2010521573A (en) * | 2007-03-26 | 2010-06-24 | ザ プロクター アンド ギャンブル カンパニー | Liquid composition system to change the visual display |
| WO2008117233A1 (en) * | 2007-03-26 | 2008-10-02 | The Procter & Gamble Company | Liquid detergent composition system having a visual indication change |
| US9926519B2 (en) * | 2012-06-08 | 2018-03-27 | S. C. Johnson & Son, Inc. | Self-adhesive detergent compositions with color-changing systems |
| US9688946B2 (en) * | 2012-12-10 | 2017-06-27 | Milliken & Company | Cleaning composition and method for using the same |
| WO2017200496A1 (en) | 2016-05-18 | 2017-11-23 | Hayat Kimya Sanayi Anonim Sirketi | Dual purpose cleaning composition for limescale removal |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1313180A (en) * | 1970-09-23 | 1973-04-11 | Unilever Ltd | Surface active liquids |
| US4016089A (en) * | 1974-11-11 | 1977-04-05 | Regan Glen B | Denture cleaning concentrate |
| US4302253A (en) * | 1980-02-19 | 1981-11-24 | R. T. Vanderbilt Company, Inc. | Thickeners for acid cleaning compositions |
-
1986
- 1986-08-08 GB GB868619391A patent/GB8619391D0/en active Pending
-
1987
- 1987-07-30 CA CA000543417A patent/CA1329751C/en not_active Expired - Fee Related
- 1987-07-30 EP EP87201455A patent/EP0255978A3/en not_active Ceased
- 1987-08-04 AU AU76549/87A patent/AU607708B2/en not_active Ceased
- 1987-08-04 JP JP62195144A patent/JPS6343999A/en active Pending
- 1987-08-06 BR BR8703992A patent/BR8703992A/en not_active Application Discontinuation
- 1987-08-07 ZA ZA875848A patent/ZA875848B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6343999A (en) | 1988-02-25 |
| EP0255978A2 (en) | 1988-02-17 |
| GB8619391D0 (en) | 1986-09-17 |
| BR8703992A (en) | 1988-04-05 |
| AU7654987A (en) | 1988-02-11 |
| ZA875848B (en) | 1989-04-26 |
| EP0255978A3 (en) | 1989-03-08 |
| AU607708B2 (en) | 1991-03-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |