EP0387310A1 - Revetement provisoire amovible a emulsion - Google Patents
Revetement provisoire amovible a emulsionInfo
- Publication number
- EP0387310A1 EP0387310A1 EP89906508A EP89906508A EP0387310A1 EP 0387310 A1 EP0387310 A1 EP 0387310A1 EP 89906508 A EP89906508 A EP 89906508A EP 89906508 A EP89906508 A EP 89906508A EP 0387310 A1 EP0387310 A1 EP 0387310A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- composition according
- water
- coating
- weight
- corrosion inhibitors
- 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- Withdrawn
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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/008—Temporary coatings
-
- 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
-
- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
Definitions
- the present invention relates to the field of corrosion resistant coatings, more particularly water based coatings for temporary protection of painted surfaces and easy removability.
- a major application i ⁇ the protection of painted surfaces of automobiles during transit from manufacturer to distributor, including international transportation.
- Such compositions are sometimes called "transit waxes”.
- All of the above coatings are basically permanent coatings and do not fill the object of the present invention to provide a temporary coating for protecting surface of automobiles, etc. temporarily, during transit.
- Temporary coatings are taught by Kawabata (Nippon Oil) U.S. 4,442,140 which teaches compositions containing oxygen-containing wax, emulsifying agent, talc or other silica, other solid pigment or filler. U.S. 4,442,140 compositions tend to flake off and stain as noted at its column 1, line 33-37.
- U.S. 4,594,109 also to Kawabata (Nippon Oil) comprising oxygen-containing wax, polybutane, silicone oil, various fillers and an emulsifier.
- silicone oil precludes any over-spraying, e.g. to cure minor defects or pitting damage during transit.
- wax-containing (water-or solvent based) formulations present a soft waxy film which retains dirt, creating unsightly appearance after long transportation.
- Solvent based formulations generally present health hazards in the work place where they are applied and removed as also do coatings which require steam and solvent combinations for their removal.
- waterborne, optionally clear, protective coating for protection of new vehicles in transit and the like which is easily removable without harm to the underlying permanent coating can be formulated from: acrylic emulsions, preferably alkali soluble acrylic emulsions, amines, particularly aqueous ammonia and amines such as morpholine, triethylamine/triethanolamine (TEA), dimethylethanolamine (DMEA) , diethylaminoethanol (DEAE), 2-amino, 2-methyl -1- propanol (AMP 95).
- acrylic emulsions preferably alkali soluble acrylic emulsions
- amines particularly aqueous ammonia and amines such as morpholine, triethylamine/triethanolamine (TEA), dimethylethanolamine (DMEA) , diethylaminoethanol (DEAE), 2-amino, 2-methyl -1- propanol (AMP 95).
- Figure 1 is a bar graph of comparative Weatherometer test results of the invention versus several comparative conventional formulations as set forth in the Examples.
- Figure 2 is a schematic of an article of manufacture comprising a painted metal substrate coated with a composition of the invention.
- compositions of the present invention will include acrylic emulsions, and more preferably those which are alkali soluble.
- Non-volatile content should be in the range of about 30-50% by weight.
- Acid value of the acrylic should be in the range of about 75-150 which allows for alkali solubility.
- Neocryl BT520 from Polyvinyl Chemical and Carboset 514H or XPD-1214 from B.F. Goodrich.
- the amount of acrylic emulsion to be utilized for the present invention is not narrowly critical.
- the acrylic resin content will be from about 0.5 to 90, more preferably from about 10 to about 60, and most preferably from about 20 to about 60% by weight.
- amine as used herein, includes aqua ammonia. Aqua ammonia (preferably 28° Be) is the most preferred "amine” for purposes of the present invention.
- Other amines usable include morpholine, triethanolamine, dimethylethanolamine (DMEA) , diethylaminoethanol (DEAE), preferably supplied commercially as "AMP-95", or others commercially available and used by those skilled in the art.
- the amine will be present preferably in about 0.1-20 parts by weight, more preferably 1.0-10, and most preferably about 1-5 parts by weight.
- the most preferred amine is about 1-5 parts by weight of aqueous ammonia (28° Be).
- Cosolvents are desirable, though not absolutely necessary, because they assist in rapid drying.
- Preferred cosolvents are alcohols, e.g. ethanol, Isopropanol or isobutanol; glycol ethers e.g. butyl cellosolve, cellosolve, methyl cellosolve, dipropylene glycol methyl ether (DPM), propylene glycol methyl ether (PM), and various others as may provide desired characteristics in blending and application for the particular formulation of interest.
- Cosolvents will preferably be present in about 0-30 parts, more preferably 1-20 parts, and most preferably 1-10 parts.
- the preferred corrosion inhibitors for the purposes of the invention are the most preferred metal passivator commonly known as Cobratec R TT85 available from PMC Specialities, Cincinnati, Ohio, which is a sodium salt of tolytriazole.
- Other effective corrosion inhibitors are ammonium salts of dichromate and molybdate and the Corbratec benzotriazoles.
- SACI 445W emulsion from Witco Chemical and other calcium sulfonate emulsions can be used.
- Ammonium benzoates and sodium nitrites can also be employed in the formulations in the present invention.
- Corrosion inhibitors will generally be present in about 0.1-15, more preferably 0.1-10, and most preferably 0.5-5 parts by weight based on the weight of the formulation.
- Preferred surfactants include non-ionic surfactants, e.g. Triton X-100, a 100% active octyl phenoxy polyethoxy ethanol having a HLB value of 13.5 and available from Rohm & Haas.
- Other non-ionic surfactants e.g. Igepal, available from GAF may be used.
- Anionic and cationic surfactants may be used in specialized circumstances, but are generally not preferred because they have a tendency to attack the underlying paint film which is to be protected and because they may form unstable emulsions due to their incompatibility with other ingredients.
- Triton X-100 is particularly preferred because it has a two-fold advantage. Triton X-100 imparts excellent surface wetting of the mixture, and also renders the cured film more sensitive to removal by hot water, providing additional ease in removability.
- Surfactants will generally be present in amounts of about 0.1-10, more preferably 0.2-5, and most preferably 0.5-2.0 parts by weight based on the total weight of the formulation.
- UV absorbers Although not required for the formulations of the present invention, their economics and solubility considerations will permit, various UV absorbers, hindered amine light stabilizers and anti-oxidants may be incorporated to lengthen or improve the desired protection provided to the underlying coating by the temporary films of the present invention.
- UV absorbers and HALS function to keep the acrylic resin from cross-linking from outdoor heat and UV exposure, and thereby permit longer periods of protection and provide films which remain easy to remove.
- UV additives When used in the present invention, UV additives will generally be present in amounts of 0.05-5%, more preferably 0.1-2%, most preferably 0.15 to about 1% by weight, but these amounts are not narrowly critical.
- defoamers are valuable additives and any of the common defoamers currently used with water-based acrylic formulations are acceptable. Particularly preferred is BYK 020 available from BYK-Chemie and
- Defoamers will generally be used in very small amounts ranging from a trace to 5.0, more preferably 0.01 to about 2, and most preferably 0.02-0.5 parts by weight based on the weight of the formulation.
- the apparatus for the present invention will be that conventionally utilized in the preparation of coatings compositions, e.g. kettles and mixing tanks having flow metering or measuring devices and agitation means, e.g. pumps mounted on side-arms connecting with the main vessel, internal stirrers, contra-rotating shearing devices and any of the other available devices which are well known to the art.
- flow metering or measuring devices and agitation means e.g. pumps mounted on side-arms connecting with the main vessel, internal stirrers, contra-rotating shearing devices and any of the other available devices which are well known to the art.
- Temperature The entire formulation of the present compositions can be accomplished at or near room temperature without need for expensive heated vessels, temperature control, etc. No substantial exotherm is involved during formulation of the compositions of the invention in most cases.
- the temperature during mixing may be different during different stages in the formulation. These temperatures are not narrowly critical and will vary to provide faster mixing or better compatibility of ingredients according to observation of those skilled in the art.
- pressure vessels may be utilized for the purpose of lowering ingredient melting and boiling points, where useful, in order to provide better dispersion of difficult-to-mix ingredients.
- the finished formulation prior to packaging, will generally be checked for viscosity, solids content, freeze-thaw stability, film build, spray ability, corrosion-protection under accelerated conditions and other tests utilizing techniques well known to the coatings industry.
- formulations of the present invention may be applied to substrates to be protected by conventional application techniques, such as spraying, brushing, dipping, flow-coating, electrostatic airless spraying.
- Coating thickness can be varied by changing the formulation, the number of coats, or the amount applied per coat but in general will be in the range from about 0.5 to about 5 mils after drying.
- Neocryl BT-520 an alkali-soluble acrylic emulsion manufactured by Polyvinyl Chemical Industries and described above under "Acrylic Emulsions" at room temperature (about 20°C); 42.10 parts by weight of water (tap water) at tap temperature (approximately 15°C), these components are allowed to mix until homogenous, no substantial reaction is involved.
- To this mixture is added very slowly 1.79 parts by weight of aqua ammonia (28° Baume NH40H) which will cause the mixture, previously milky, to become clear. This neutralizes the acid groups on the acrylic resin but involves no substantial exotherm.
- Triton X-100 a nonionic surfactant manufactured by GAF
- Cobratec-85 a sodium salt of a tolytriazole manufactured by PMC Specialities
- BYK-020 a defoamer manufactured by BYK Chemie. Agitation is continued during the addition of all of the ingredients. No heating is required. Agitation is continued for about two hours until the mixture is entirely homogenous.
- the homogenous batch is sampled for quality control and the pH is found to be about 9 (a range of pH is preferably from about 8 to 10, more preferably from about 8.5 to 9.5).
- Nonvolatiles are measured by wt% of evaporation and found to be approximately 23%
- nonvolatiles will generally be in the range of from about 18 to 27, more preferably from about 20 to 25, and most preferably from about 21 to 24% though these can, of course, be reduced by dilution of the formulation, e.g. for specialized applications).
- ASTM Method D-2369 is used to determine nonvolatiles.
- Viscosity is found to be about 23 seconds using a Ford Number Four cup viscometer (preferred viscosity will be in the range of from about 15 to about 27, more preferably from 18 to about 25, and can also vary with dilution as needed).
- Resulting product is tested for weathering resistance by applying it to a cold rolled 10 10 steel panel which has been painted with a Dupont acrylic enamel which is sprayed on. After drying for 24 hours, the test panel is subjected to a xenon light Weatherometer operated according to ASTM G-26-83 and resists over 300 hours of exposure to the Weatherometer without failure.
- a panel which had been exposed for 300 hours to the Weatherometer was then sprayed with a cleaner composed of water, DPM (co-solvent) and Triton X-100 (surfactant) and 28° Be aqua ammonia.
- the temporary coating of the present invention is readily removed with gentle sponging (allow to set for 3-5 minutes).
- the alkaline cleaner effectively solubilizes the coating and it removes readily. Examination of the underlying acrylic enamel permanent finish shows no visible staining, no apparent gloss reduction or other apparent softening or damage to the permanent film.
- the coating composition exhibits good freeze/thaw stability over 5 cycles of 8 hours at 0°F followed by 16 hours at about 25°C and repeat.
- Example VI is a commercial temporary protective formulation available from Eastman Kodak comprising:
- Example VII is a commercial temporary protective coating also available from Eastman comprising:
- pigments or non-staining dyes can be added to provide distinctive color and/or opacity
- multiple coats can be used
- compositions can be diluted as needed to provide desired film thickness and ease of application. These compositions will typically permit recoating with additional coats of similar compositions without wrinkling or lifting of the base coat.
- the second coating will generally cause some softening of the first layer of the temporary coating so that the two coats fuse together and form a desirably thick coat.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
Est décrit un revêtement protecteur provisoire à émulsion pour la protection des véhicules durant leur transit depuis le constructeur jusqu'au concessionnaire. Des combinaisons comprenant des émulsions acryliques, des cires, des solvants, des inhibiteurs de corrosion, des antimousses, des amines et des tensioactifs assurentn une protection provisoire aux substrats peints et non peints et s'éliminent aisément sans paraffine ou vapeur. De même, étant à émulsion et s'éliminant à l'aide de nettoyants alcalins, ils ne sont pas nocifs pour l'environnement.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US22511688A | 1988-07-27 | 1988-07-27 | |
US225116 | 1988-07-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0387310A1 true EP0387310A1 (fr) | 1990-09-19 |
Family
ID=22843598
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89906508A Withdrawn EP0387310A1 (fr) | 1988-07-27 | 1989-05-09 | Revetement provisoire amovible a emulsion |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0387310A1 (fr) |
KR (1) | KR900701943A (fr) |
AU (1) | AU616536B2 (fr) |
WO (1) | WO1990001051A1 (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5639814A (en) * | 1988-10-11 | 1997-06-17 | Ppg Industries, Inc. | Temporary protective coating compositions capable of low temperature drying |
DE4011772A1 (de) * | 1990-03-28 | 1991-10-02 | Henkel Kgaa | Waessrige polyacrylatdispersionen oder polyacrylatemulsionen, verfahren zu ihrer herstellung sowie verwendung zur temporaeren schutzbeschichtung von harten oberflaechen |
JPH0559309A (ja) * | 1991-08-30 | 1993-03-09 | Nippon Paint Co Ltd | アルカリ水溶性保護塗料用塗膜形成体 |
ATE153047T1 (de) * | 1991-09-30 | 1997-05-15 | Ppg Industries Inc | Bei niedrigen temperaturen trockenbare, temporär schützende beschichtungszusammensetzung |
DE19733312A1 (de) * | 1997-08-01 | 1999-02-04 | Herberts Gmbh | Verfahren zur Aufbringung eines schützenden und dekorativen Schichtenverbundes |
US6232392B1 (en) | 1998-06-24 | 2001-05-15 | Ppg Industries Ohio, Inc. | Temporary water-washable coating for spray booths and vehicles during assembly |
US7414089B2 (en) | 2003-04-25 | 2008-08-19 | Eco Chemical, Inc. | Marking and removing turf lines method and composition |
US11697746B2 (en) | 2013-03-15 | 2023-07-11 | Conservation Technologies, Llc | Protective water reversible clear coating for substrates |
US20170073525A1 (en) * | 2014-03-07 | 2017-03-16 | Tsytex E-Coatings Inc. | Temporary protective coating and removal system |
GB201707669D0 (en) | 2017-05-12 | 2017-06-28 | Renu Tps Ltd | Paint system |
EP3450508B1 (fr) * | 2017-08-23 | 2023-01-25 | Conservation Technologies, LLC | Revêtement de protection réversible à eau pour substrats |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4070510A (en) * | 1976-03-12 | 1978-01-24 | Acme Chemical Company | Aqueous polish composition |
GB8412434D0 (en) * | 1984-05-16 | 1984-06-20 | Ici Plc | Coating compositions |
US4626559A (en) * | 1985-04-22 | 1986-12-02 | Pep Rally Paint, Inc. | Non-permanent ornamental paint mixture |
-
1989
- 1989-05-09 EP EP89906508A patent/EP0387310A1/fr not_active Withdrawn
- 1989-05-09 KR KR1019900700600A patent/KR900701943A/ko not_active Application Discontinuation
- 1989-05-09 AU AU36990/89A patent/AU616536B2/en not_active Ceased
- 1989-05-09 WO PCT/US1989/001980 patent/WO1990001051A1/fr not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9001051A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR900701943A (ko) | 1990-12-05 |
AU616536B2 (en) | 1991-10-31 |
WO1990001051A1 (fr) | 1990-02-08 |
AU3699089A (en) | 1990-02-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19900501 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
17Q | First examination report despatched |
Effective date: 19920603 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19921014 |