GB2191501A - Graffiti removal composition - Google Patents
Graffiti removal composition Download PDFInfo
- Publication number
- GB2191501A GB2191501A GB08713361A GB8713361A GB2191501A GB 2191501 A GB2191501 A GB 2191501A GB 08713361 A GB08713361 A GB 08713361A GB 8713361 A GB8713361 A GB 8713361A GB 2191501 A GB2191501 A GB 2191501A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkyl
- removal composition
- weight
- composition according
- graffiti removal
- 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- Withdrawn
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D9/00—Chemical paint or ink removers
- C09D9/005—Chemical paint or ink removers containing organic solvents
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/50—Solvents
- C11D7/5004—Organic solvents
- C11D7/5013—Organic solvents containing nitrogen
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/26—Organic compounds containing oxygen
- C11D7/263—Ethers
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/26—Organic compounds containing oxygen
- C11D7/267—Heterocyclic 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/32—Organic compounds containing nitrogen
- C11D7/3281—Heterocyclic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Detergent Compositions (AREA)
Abstract
A graffiti removal composition comprises an N-alkyl-2-pyrrolidone and an alkyl lactone.
Description
SPECIFICATION
Graffiti removal composition
The Present invention relates to a graffiti removal composition.
Graffiti are markings applied to external surfaces such as walls of buildings, by means of, for example, paint, ink or dye. These markings are unsightly and it is often desired to remove them.
However, graffiti can be extremely difficult to remove.
The present invention provides a graffiti removal composition which is particularly envisaged for use in removal of graffiti from surfaces particularly non-porous surfaces.
In accordance with one aspect of the present invention there is provided a graffiti removal composition comprising an N-alkyl-2-pyrrolidone and an alkyl lactone. It has been found that the combination of ingredients used in the composition of this invention will remove a greater range of types of graffiti soil than when the components are used separately.
This range inciudes a broad vareity of paints, inks, lacquers, crayons, lipstick and felt pen marks.
The N-alkyl-2-pyrrolidone is preferably present in an amount from 25-50% by weight of the composition and the alkyl lactone is also preferably present in an amount from 25-50% by weight of the composition.
Preferably, these two components are present in the composition in a weight ratio from 3:2 to 2:3, preferably about 1:1.
Water may be present in an amount from 0 to 50% by weight of the composition. However, the composition can be used in a diluted form in which the concentration of active ingredients is reduced and the amount of water is increased.
The N-alkyl-2-pyrrolidone is preferably a lower alkyl compound containing, for example, from 1 to 3 carbon atoms, such as N-methyl-2-pyrrolidone. This component acts as a relatively high boiling point solvent for paints and similar substances.
The alkyl lactone is preferably a y-alkyl lactone such as y-butyrolactone. This component acts as a solvent which is less active than the pyrrolidone and this makes the composition less aggressive. Also, the lactone component has a preference for dissolving ink rather than paint.
The composition may also contain from 0 to 5%, such as from 2 to 4%, by weight of alkyl ester, preferably acetate, such as ethyl acetate or amyl acetate. This component is an active solvent which is particularly efficacious for dissolving some types of lacquer. However, its proportion in the composition of the present invention is restricted as it is more inflammable than the pyrrolidone or lactone.
The composition may also contain from 0 to 5%, such as from 1 to 3%, by weight of alkyne diol such as 2-butyne-1, 4-diol. This component acts as a solvent evaporation retarder so that the other solvent components do not evaporate too quickly. However, the alkyne diol itself can also act as a solvent for resin residues. The composition may also contain from 0 to 5%, such as from 1 to 3%, by weight of ethoxylated vegetable oil with from 5 to 60 moles of ethylene oxide per mole of vegetable oil. A preferred compound of this type is tetracontaethoxy castor oil. This component acts as a detergent and emulsifies resin and monomers after they have been separated from a surface by solvent action. The composition may also contain from 0 to 15%, such as from 1 to 5%, by weight of phenoxy ethanol or alkyl phenoxy ethanol.The phenoxy ethanol or alkyl phenoxy ethanol may be ethoxylated. Examples of compounds of this type are 2-phenoxy ethanol and nonyl-ethyoxy nonyl phenoxy ethanol. These compounds may also be modified by the incorporation of small amounts, such as from 0.1 to 5% by weight, of sulphonic acid type surfactants such as "Antarox" CTA 639 (GAF Corporation), to enhance wetting properties of this component.
The composition may also contain from 0 to 5%, such as from 0.5 to 2%, by weight of polyvinyl pyrrolidone, preferably having a molecular weight in the range from 20,000 to 50,000, such as PVP K30 (GAF Corporation). This component acts as a dye scavenger and helps to hold in suspension pigment separated from a surface. The composition may also contain from 0 to 5%, such as from 0.5 to 2%, by weight of hydroxy alkyl cellulose, such as hydroxy propyl cellulose, which may have a molecular weight of in the range from 800,000 to 1,000,000 such as "Klucel" H (Hercules). This component acts as a thickening agent but also retards solvent evaporation. Retardation of solvent evaporation increases contact time of the active ingredients with graffiti. Thickening also increases contact time on vertical surfaces.
The compositions of the present invention have been found to be particularly useful for removal of graffiti and especiallly for resin softening and solubilisation coupled with control of solvent evaporation. The chosen surface active agents emulsify or dissolve polymers and paint additives, wet and disperse pigment and filler particles, and wet substrate surfaces. In particular, many compositions will soften and loosen paint which subsequently deposits on an adheres to the surface. The compositions of the present invention have good anti-soil redeposition properties compared to prior art compositions.
Further, the compositions of the present invention have low flammability and toxicity. Still further, the compositions can be removed by means of water. The present invention will now be illustrated by the following examples.
Example 1
A composition was prepared containing the following components in percentages by weight of the total composition.
COMPONENT y-Butyrolactone 45.0
N-methyl-2-pyrrolidone 42.0 2-Butyne-1 ,4-diol 2.0
Ethyl acetate 2.0
Amyl acetate 2.0
Castor oil. 40EtO 1.5
Polyvinylpyrrolidone PVP K30 (GAF Corp.) 1.0 2-Phenoxy ethanol 2.0
Modified nonyl phenol 9Et0
(Antarox CTA639 GAF Corp.) 1.5
Hydroxypropyl cellulose (Klucel H, Hercules) 1.0
This product is a clear soft gel and can be applied, for example, by brush to graffiti. It can be left for up to 20 minutes or longer if required, depending on the nature of the graffiti to be removed, and then readily hosed or washed off with water. In many instances, less than one minute contact time is sufficient. Un-thickened versions of this may be applied by pressurised aerosol means. This composition has excellent solubility in water, whereas many paint stripping formulations give unstable, milky white emulsions in water.This composition can be diluted with water to give a clear stable solution.
The flash point of the above formulation is about 45"C (Pensky-Martens closed cup). The flammability may be lowered by the reduction or removal of the alkyl acetates or by the addition of water as in Example 2.
Example 2
A composition was prepared containing the following components in percentages by weight of the total composition.
COMPONENT y-Butyrolactone 40.0
N-Mythyl-2-pyrrolidone 40.0 2-Butyne-1,4-diol 2.0
Castor 0il.40EtO 2.0
Polyvinylpyrrolidone PVP K30 (GAF Corp.) 1.0
Modified nonyl phenol.9EtO (Antarox CTA639, GAF Corp.) 2.0
Water 13.0
This formulation is non-flammable, and is of low viscosity. It may be applied by spraying.
Increasing the water content and/or decreasing the N-alkyl pyrrolidone and alkyl ester content of the formulations of the present invention facilitates the removal of graffiti from previously painted surfaces with less likelihood of damage to the primary coating. At dilutions of about 90% water, such formulations can be used for general purpose spray-and-wipe cleaning of hard surfaces.
Modifications and variations such as would be apparent to a skilled addressee are deemed within the scope of the present invention.
Claims (15)
1. A graffiti removal composition comprising an N-alkyl-2-pyrrolidone and an alkyl lactone.
2. A graffiti removal composition according to claim 1, in which the N-alkyl-2-pyrrolidone is present in an amount from 25-50% by weight of the composition and the alkyl lactone is present in an amount from 25-50% by weight of the composition.
3. A graffiti removal composition according to claim 1 or 2, in which the N-alkyl-2-pyrrolidone and the alkyl lactone are present in the composition, in a weight ratio in the range from 3:2 to 2:3.
4. A graffiti removal composition according to any one of the preceding claims, in which the
N-alkyl-2-pyrrolidone is a lower alkyl compound.
5. A graffiti removal composition according to claim 4, in which the N-alkyl-2-pyrrolidone is
N-methyl-2-pyrrolidone.
6. A graffiti removal composition according to any one of the preceding claims, in which the alkyl lactone is a y-alkyl lactone.
7. A graffiti removal composition according to claim 6, in which the alkyl lactone is y-butyrolactone.
8. A graffiti removal composition according to any one of the preceding claims which contains water in an amount up to 50% by weight of the composition.
9. A graffiti removal composition according to any one of the preceding claims, which contains up to 5% by weight of an alkyl ester.
10. A graffiti removal composition according to any one of the preceding claims, which contains up to 5% by weight of an alkyne diol.
11. A graffiti removal composition according to any one of the preceding claims, which contains up to 5% by weight of ethoxylated vegetable oil with from 5 to 60 moles of ethylene oxide per mole of vegetable oil.
12. A graffiti removal composition according to any one of the preceding claims, which contains up to 15% by weight of phenoxy ethanol or alkyl phenoxy ethanol.
13. A graffiti removal composition according to any one of the preceding claims, which contains up to 5% by weight of polyvinyl pyrrolidone.
14. A graffiti removal composition according to any one of the preceding claims, which contains up to 5% by weight of hydroxyalkyl cellulose.
15. A graffiti removal composition substantially as hereinbefore described with reference to
Example 1 or Example 2.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPH640686 | 1986-06-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
GB8713361D0 GB8713361D0 (en) | 1987-07-15 |
GB2191501A true GB2191501A (en) | 1987-12-16 |
Family
ID=3771656
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08713361A Withdrawn GB2191501A (en) | 1986-06-13 | 1987-06-08 | Graffiti removal composition |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2191501A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2259096A (en) * | 1991-08-28 | 1993-03-03 | Unilever Plc | Liquid cleaning products |
WO1993018101A1 (en) * | 1992-03-06 | 1993-09-16 | Minnesota Mining And Manufacturing Company | Composition containing lactone and ester for removing coatings |
WO1993018865A1 (en) * | 1992-03-16 | 1993-09-30 | Isp Investments Inc. | Aqueous stripping composition containing a peroxide and butyrolactone, ethylene carbonate or a water soluble ester |
EP0625568A1 (en) * | 1993-05-18 | 1994-11-23 | Sumitomo Chemical Company, Limited | Cleaning solution for apparatuses contacted with quinone diazide photosensitizers and cleaning method using the same |
EP0640113A1 (en) * | 1992-05-01 | 1995-03-01 | American Polymer, Inc. | Surface pre-treatment for the removal of graffiti therefrom |
US5399203A (en) * | 1992-04-20 | 1995-03-21 | Mitsubishi Kasei Corporation | Method for cleaning oil-deposited material |
US5712234A (en) * | 1994-11-28 | 1998-01-27 | Arco Chemical Technology, L.P. | Graffiti removers which comprise a dye bleaching agent |
US5910369A (en) * | 1992-05-01 | 1999-06-08 | American Polymer, Inc. | Methods for protecting substrates with urethane protective coatings |
US6290732B1 (en) | 1999-11-09 | 2001-09-18 | Ecolab Inc. | Laundry process with enhanced ink soil removal |
US7335319B2 (en) | 2002-02-06 | 2008-02-26 | Arch Specialty Chemicals, Inc. | Semiconductor stress buffer coating edge bead removal compositions and method for their use |
-
1987
- 1987-06-08 GB GB08713361A patent/GB2191501A/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
WO 86/03766 * |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2259096A (en) * | 1991-08-28 | 1993-03-03 | Unilever Plc | Liquid cleaning products |
WO1993018101A1 (en) * | 1992-03-06 | 1993-09-16 | Minnesota Mining And Manufacturing Company | Composition containing lactone and ester for removing coatings |
US5413729A (en) * | 1992-03-06 | 1995-05-09 | Minnesota Mining And Manufacturing Company | Composition containing lactone and ester for removing coatings |
WO1993018865A1 (en) * | 1992-03-16 | 1993-09-30 | Isp Investments Inc. | Aqueous stripping composition containing a peroxide and butyrolactone, ethylene carbonate or a water soluble ester |
US5399203A (en) * | 1992-04-20 | 1995-03-21 | Mitsubishi Kasei Corporation | Method for cleaning oil-deposited material |
US5910369A (en) * | 1992-05-01 | 1999-06-08 | American Polymer, Inc. | Methods for protecting substrates with urethane protective coatings |
EP0640113A1 (en) * | 1992-05-01 | 1995-03-01 | American Polymer, Inc. | Surface pre-treatment for the removal of graffiti therefrom |
EP0640113A4 (en) * | 1992-05-01 | 1996-03-13 | American Polymer Inc | Surface pre-treatment for the removal of graffiti therefrom. |
US6312815B1 (en) | 1992-05-01 | 2001-11-06 | American Polymer Corporation | Two layer protective coatings |
EP0625568A1 (en) * | 1993-05-18 | 1994-11-23 | Sumitomo Chemical Company, Limited | Cleaning solution for apparatuses contacted with quinone diazide photosensitizers and cleaning method using the same |
US5712234A (en) * | 1994-11-28 | 1998-01-27 | Arco Chemical Technology, L.P. | Graffiti removers which comprise a dye bleaching agent |
US6290732B1 (en) | 1999-11-09 | 2001-09-18 | Ecolab Inc. | Laundry process with enhanced ink soil removal |
US7335319B2 (en) | 2002-02-06 | 2008-02-26 | Arch Specialty Chemicals, Inc. | Semiconductor stress buffer coating edge bead removal compositions and method for their use |
Also Published As
Publication number | Publication date |
---|---|
GB8713361D0 (en) | 1987-07-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |