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WO2000021691A1 - Revetement de protection chimiquement detachable et procede par lequel un revetement est detache a l'aide d'une solution aqueuse alcaline - Google Patents

Revetement de protection chimiquement detachable et procede par lequel un revetement est detache a l'aide d'une solution aqueuse alcaline Download PDF

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Publication number
WO2000021691A1
WO2000021691A1 PCT/US1999/021467 US9921467W WO0021691A1 WO 2000021691 A1 WO2000021691 A1 WO 2000021691A1 US 9921467 W US9921467 W US 9921467W WO 0021691 A1 WO0021691 A1 WO 0021691A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
solution
film
coating
acrylic polymer
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.)
Ceased
Application number
PCT/US1999/021467
Other languages
English (en)
Inventor
Charles Hawes
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.)
Energizer Auto Inc
Original Assignee
Armor All Products Corp
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 Armor All Products Corp filed Critical Armor All Products Corp
Priority to AU10932/00A priority Critical patent/AU1093200A/en
Publication of WO2000021691A1 publication Critical patent/WO2000021691A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/20—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings

Definitions

  • U.S. Patent Nos. 5,290,470 and 5,376,296 disclose a cleaning product useful for cleaning wood decks, vinyl, etc.
  • U.S. Patent Nos. 5,605,578; and 5,567,247 disclose cleaning products which can be applied by a hose-end spray gun for cleaning outdoor surfaces such as vinyl siding and painted wood. Examples of hose-end spray guns which can be used for this purpose are disclosed in U.S. Patent No. 5,595,345.
  • Paint used on the exterior of wood frame houses is a well known case in point. Paint of various types extend the life of natural wood primarily by protecting the wood from the effects of weathering, i.e. , rain, UV rays and oxidation. It also is used to beautify the surface as well with various gloss components and colorants.
  • Another case in point is the use of vinyl siding. Vinyl siding is very much like a long lasting paint that doesn't peel or crack and can last many years beyond that of paint.
  • Patent Nos. 2,615,820; 2,680,724; 3,034,915; 3,207,716; 3,625,727 and 3,746,561 disclose strippable coatings which may include a release agent for ease of physically peeling the coating from the object on which it is located.
  • U.S. Patent No. 3,819,394 discloses a coating which can be rinsed from an object by use of a selective solvent such as water or a moderately alkaline aqueous solution in the case of a polyacrylic acid resin coating or an organic solvent in the case of an acrylic acid resin coating.
  • the invention provides a chemically strippable coating which can be applied to a substrate exposed to environmental conditions, the coating comprising a dried film of a solution acrylic polymer, the film being chemically removable from the substrate by rinsing the film with an aqueous alkaline solution.
  • the substrate can comprise various materials such as vinyl, plastic, metal, masonry, etc.
  • the alkaline aqueous solution preferably has a pH of at least about 12.
  • the coating is preferably applied onto the substrate by spraying an aqueous mixture comprising a base and a solution acrylic polymer onto the substrate, the solution acrylic polymer including enough acrylic or metaacrylic acid monomer functionality to provide clear water solubility in the aqueous mixture.
  • the base can comprise an alkaline earth or volatile amine.
  • the aqueous mixture can further include a leveling agent, a fluorocarbon surfactant, a UV absorber, and/or a sun blocking agent. Accordingly, the aqueous mixture can be applied onto a variety of materials such as a vinyl surface, a plastic surface, a painted surface, an unpainted metal surface, or an unpainted masonry surface.
  • the aqueous alkaline solution is sprayed onto the substrate by a hand-held hose-end sprayer wherein a concentrated aqueous alkaline solution is diluted with water and the diluted mixture is sprayed onto the film.
  • the aqueous mixture can be sprayed onto the substrate by a hand-held hose-end sprayer wherein the solution acrylic polymer is mixed with water supplied to the sprayer by a water hose.
  • the invention provides an alkaline strippable protective coating useful for protecting outdoor surfaces from exposure to damaging environmental conditions such as sun damage, build-up of dirt, growth of algae and mold, etc.
  • the protective coating provides a strippable barrier film which can be removed to expose the protected underlying surface.
  • the protective coating can be periodically replaced by stripping a previously applied protective coating from the surface to be protected and applying a new protective coating. The stripping process removes the protective film and build-up accumulated thereon.
  • the protective coating is applied to new or cleaned vinyl siding by a consumer or professional service.
  • the protective coating preferably is formulated such that it is not washed off of the vinyl siding by rain or tap water.
  • the protective coating is removable by application of an alkaline rinse solution to the coating.
  • the protective coating along with build-up thereon can be removed by spraying an alkaline cleaning composition onto the coating followed by rinsing the coating from the vinyl siding using a water rinse.
  • the cleaning composition and water rinse can be applied using a hand-held, hose end spray gun attached to a water hose.
  • the cleaning composition can be held in a container attached to the spray gun and during application of the cleaning composition to the vinyl siding, the cleaning composition is siphoned from the container as it is mixed with water supplied by the water hose and sprayed from the spray gun.
  • the cleaning composition is diluted as it mixes with the water, the dilution ration ranging from 1 to 50 parts water per 1 part water.
  • the protective coating can be applied in the same manner by siphoning the protective coating from a container and spraying a diluted mixture from the spray gun.
  • the protective coating is preferably a sprayable aqueous solution.
  • Suitable solution acrylic polymers can be made water soluble by addition of an appropriate base so as to have an acid number above 40 and/or a molecular weight below
  • An especially preferred solution acrylic polymer which can be incorporated in the protective coating of the invention is a product called "SYNTHEMUL” available from Reichold Chemical Co. located in Research Triangle Park, North Carolina. This particular solution acrylic polymer has an acid number of 45 ⁇ 5 and a molecular weight of approximately 10,000.
  • the "SYNTHEMUL” can be mixed with other ingredients of a protective coating as follows: 50% “SYNTHEMUL” 40-427, 5% ammonium hydroxide, 10% glycol ether EB, 0.5% Fluorad FC 430 and 34.5% water.
  • the protective coating applied to a surface to be protected includes: 5% "SYNTHEMUL” 40-427, 0.5% ammonium hydroxide, 1 % glycol ether EB, 0.05% Fluorad FC 430 and 93.45% water.
  • "SYNTHEMUL” 40-427 is a thermosetting acrylic resin solution supplied in ethylene glycol mono butyl ether and conventional uses include thermosetting enamels, metal coatings and flow coatings where high gloss and superior solvent resistance is needed. Neutralizing with an amine makes SYNTHEMUL 40-427 water-reducible.
  • the solution acrylic polymer coating formulation is characterized by being low to medium molecular weight and/or enough acrylic or methylacrylic acid monomer functionality in the polymer to give complete clear water solubility when neutralized with an appropriate base.
  • the base can be of the alkaline earth or amine types. However, for the purpose of this invention the base is preferably a volatile amine type.
  • the polymer may also contain other acrylic or methylacrylic esters such as methyl acrylate or methacrylate, ethyl acrylate or methacrylate, propyl (including isopropyl acrylate or methacrylate) and higher similar homologous.
  • the purpose of the polymeric solution after application of a thin film to a surface is primarily to be a sacrificial surface. That is, once coated onto a precleaned surface such as vinyl or plastic, painted surfaces as well as unpainted surfaces such as metal or masonry, foreign matter such as difficult to remove road film, algae and mold, etc. , deposit onto the thin polymer coating instead of the underlying surface itself. Since the coating is alkaline strippable the coating is removed with an appropriate base taking the built up soil with it leaving a clean surface. In some cases it is also possible to use this polymeric solution containing an excess of volatile amine base in order to strip off the previously applied soiled coating and depositing a new coating simultaneously.
  • a general formula for the solution acrylic polymer is as follows:
  • R,, R 2 and R 3 are organic acrylic esters or methacrylic esters to give varying hardness and flexibility. In general, the smaller the R group the harder the dried film and the larger and more branched chains give more flexibility.
  • A-D are the quantities of each monomer in the polymer. At least one of the R groups may contain a hydro xyl group. Also styrene may also be used as one of the monomers.
  • An appropriate base is a volatile amine type such as ammonia, methylamine, ethylamine, propylamine, isopropylamine, dimethylamine, cyclohexylamine, trimethylamine, mo ⁇ holine and various combinations thereof.
  • Solution acrylic polymers which can be made water soluble by the addition of an appropriate base are characterized by having an acid number above 40 and a molecular weight below 100,000.
  • a formula for a hose end sprayer with a 1 : 10 dilution ratio wherein 1 part solution acrylic polymer coating composition is diluted with 10 parts water is as follows:

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)

Abstract

Cette invention se rapporte à un revêtement détachable à l'aide d'un composé alcalin, qui vise à protéger des substrats exposés à des conditions ambiantes, telles que peintures, plastiques, caoutchoucs et métaux. Ce revêtement est constitué par une solution de polymère acrylique qui ne se dégrade pas sous l'action des conditions atmosphériques, mais qui est chimiquement détachable à l'aide d'une solution aqueuse alcaline, telle qu'une solution nettoyante de pH élevé. Ce revêtement peut être appliqué sur des zones étendues au moyen d'un tuyau d'arrosage de jardin. Le revêtement sèche pour former un mince film protecteur destiné à durer une à deux années et à ajouter du brillant aux surfaces en vinyle ou recouvertes d'une peinture, ternies par l'action des conditions atmosphériques. Ce film protecteur peut réduire au minimum l'oxydation du vinyle ou de la peinture par encapsulation du TiO2 exposé, lequel agit comme filtre anti-ultraviolet. Ce film peut également ajouter une profondeur de couleur à ces surfaces et/ou réduire au minimum la croissance des salissures biologiques telles que moisissures et algues.
PCT/US1999/021467 1998-10-15 1999-10-15 Revetement de protection chimiquement detachable et procede par lequel un revetement est detache a l'aide d'une solution aqueuse alcaline Ceased WO2000021691A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU10932/00A AU1093200A (en) 1998-10-15 1999-10-15 Chemically strippable protective coating and method wherein coating is stripped with alkaline aqueous solution

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17285998A 1998-10-15 1998-10-15
US09/172,859 1998-10-15

Publications (1)

Publication Number Publication Date
WO2000021691A1 true WO2000021691A1 (fr) 2000-04-20

Family

ID=22629521

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/021467 Ceased WO2000021691A1 (fr) 1998-10-15 1999-10-15 Revetement de protection chimiquement detachable et procede par lequel un revetement est detache a l'aide d'une solution aqueuse alcaline

Country Status (2)

Country Link
AU (1) AU1093200A (fr)
WO (1) WO2000021691A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3114181A4 (fr) * 2014-03-07 2017-01-25 Tsytex E-Coatings Inc. Revêtement protecteur temporaire et système d'élimination

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3819394A (en) * 1972-12-13 1974-06-25 Kollmorgen Photocircuits Protective coating for activated resinous substrates
US4591533A (en) * 1985-06-03 1986-05-27 E. I. Du Pont De Nemours And Company Coating composition of an acrylic polymer, a dispersed acrylic polymer and an alkylated melamine crosslinking agent
US5081174A (en) * 1988-10-11 1992-01-14 Ppg Industries, Inc. Protective coating composition
US5505787A (en) * 1993-02-01 1996-04-09 Total Service Co., Inc. Method for cleaning surface of external wall of building

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3819394A (en) * 1972-12-13 1974-06-25 Kollmorgen Photocircuits Protective coating for activated resinous substrates
US4591533A (en) * 1985-06-03 1986-05-27 E. I. Du Pont De Nemours And Company Coating composition of an acrylic polymer, a dispersed acrylic polymer and an alkylated melamine crosslinking agent
US5081174A (en) * 1988-10-11 1992-01-14 Ppg Industries, Inc. Protective coating composition
US5505787A (en) * 1993-02-01 1996-04-09 Total Service Co., Inc. Method for cleaning surface of external wall of building

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3114181A4 (fr) * 2014-03-07 2017-01-25 Tsytex E-Coatings Inc. Revêtement protecteur temporaire et système d'élimination

Also Published As

Publication number Publication date
AU1093200A (en) 2000-05-01

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