GB2191501A - Graffiti removal composition - Google Patents

Graffiti removal composition Download PDF

Info

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Withdrawn
Application number
GB08713361A
Other versions
GB8713361D0 (en
Inventor
Peter Allan Matthews
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.)
PROTECTIVE RESEARCH IND LIMITE
Original Assignee
PROTECTIVE RESEARCH IND LIMITE
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
Application filed by PROTECTIVE RESEARCH IND LIMITE filed Critical PROTECTIVE RESEARCH IND LIMITE
Publication of GB8713361D0 publication Critical patent/GB8713361D0/en
Publication of GB2191501A publication Critical patent/GB2191501A/en
Withdrawn legal-status Critical Current

Links

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.
GB08713361A 1986-06-13 1987-06-08 Graffiti removal composition Withdrawn GB2191501A (en)

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)

* Cited by examiner, † Cited by third party
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WO 86/03766 *

Cited By (13)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
US4812255A (en) Paint removing compositions
US5049300A (en) Method of activating acidified NMP to provide an effective paint remover composition
US5565136A (en) Water based wood stripping compositions
US4927556A (en) Aqueous based composition containing dibasic ester and thickening agent for removing coatings
EP0483285B1 (en) Paint stripper and varnish remover compositions and related methods
US5334331A (en) Method of activating N-methyl-2-pyrrolidone (NMP) varnish and paint remover solvents for removal of organic coatings
US5035829A (en) Paint removing compositions
US5413729A (en) Composition containing lactone and ester for removing coatings
EP0551378B1 (en) Method of activating n-methyl-2-pyrrolidone (nmp) and/or gamma-butyrolactone (blo) varnish and paint remover solvents
US5049314A (en) Paint stripping composition consisting essentially of NMP and ethyl-3-ethoxy propionate
EP0294041B2 (en) Aqueous-based composition for removing coatings
GB2191501A (en) Graffiti removal composition
US5792278A (en) Process for cleaning inks from various surfaces including printing plates
US20160053203A1 (en) Synergistic mixed solvents-based compositions for removal of paint, varnish and stain coatings
JPH11502558A (en) Cleaning and / or stripping compositions based on dibasic acid esters and ethers
US5154848A (en) Method of activating N-methyl-2-pyrrolidone (NMP) with ethyl 3-ethoxypropionate (EEP) to provide improved varnish and paint remover solvents
AU649838B2 (en) Composition for removing polymeric coatings
EP0065381A2 (en) Stripping agents
US6261381B1 (en) Composition and process for cleaning inks from various substrates including printing plates
USRE37849E1 (en) Aqueous based composition containing dibasic ester and thickening agent for removing coatings
WO1995007974A1 (en) Cleaning composition
US5217640A (en) Method of activating α-butyrolactone (BLO) with ethyl 3-ethoxypropionate (EEP) to provide improved varnish and paint remover solvents
GB2150587A (en) Paint remover
JPH07316534A (en) Water-soluble release agent composition
CA1320675C (en) Paint stripping composition containing five membered ring lactone

Legal Events

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