WO1982000151A1 - A composition and method for decreasing pollution resulting from the application of a coating composition - Google Patents

A composition and method for decreasing pollution resulting from the application of a coating composition Download PDF

Info

Publication number
WO1982000151A1
WO1982000151A1 PCT/US1980/000840 US8000840W WO8200151A1 WO 1982000151 A1 WO1982000151 A1 WO 1982000151A1 US 8000840 W US8000840 W US 8000840W WO 8200151 A1 WO8200151 A1 WO 8200151A1
Authority
WO
WIPO (PCT)
Prior art keywords
carbon atoms
gaseous
thinner
composition
water miscible
Prior art date
Application number
PCT/US1980/000840
Other languages
English (en)
French (fr)
Inventor
Group Inc Grow
J Garner
Original Assignee
Group Inc Grow
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 Group Inc Grow filed Critical Group Inc Grow
Priority to PCT/US1980/000840 priority Critical patent/WO1982000151A1/en
Priority to JP55502034A priority patent/JPS57501180A/ja
Priority to DE803050468T priority patent/DE3050468A1/de
Priority to GB8202428A priority patent/GB2089236B/en
Publication of WO1982000151A1 publication Critical patent/WO1982000151A1/en

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
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/20—Diluents or solvents

Definitions

  • the present invention is directed towards a means for decreasing gaseous pollution resulting from the application of coating compositions. It, therefore, relates to improvements to gaseous pollution, such as air pollution, and more specifically, to the utilization of a water miscible organic based thinner. More specifically, the thinner is utilized to thin or reduce the composition employed as a coating composition . during the application of said composition to a substrate.
  • the coating industry in particular the paint industry, has gone through a revolution in terms of compositions that may be employed in the application of the coating compositions to various substrates due to the pollution of the atmosphere.
  • Numerous techniques such as the use of powder coating techniques, high solids coating compositions, reduced organic based coating compositions and the like, are various means for resolving the air pollution problem. All of these techniques require a whole new technology in order to satisfy completely the air pollution authorities.
  • the advantage of the present application is that the known technology related to the application of currently known coating compositions, such as liquid paints used as primers and top coat compositions in the transportation industry, such as the automotive industry, may be utilized. It has been found that by the utilization of a completely water miscible paint thinner or paint reducer, the technology currently known with respect to organic based liquid paint may be employed.
  • the present invention is concerned with a method for decreasing air pollution resulting from the application of a coating composition
  • a coating composition comprising the steps of; 1. applying to a substrate an organic solvent based coating composition containing a completely water miscible organic based thinner composition, thereby forming a gaseous effluent containing a mixture of air and gaseous organic solvent and gaseous thinner; and
  • the thinner that may be employed in the present application may be any completely water miscible organic based thinner composition, it is preferred that the thinner or reducer composition be one comprised of; a. a water miscible compound selected from the group consisting of a saturated aliphatic glycol or a saturated aliphatic glycol ether, both containing at least 3 carbon atoms and a compound containing Formula I :
  • R is independently selected from the group consisting of hydrogen, alkyl of from 1 to 4 carbon atoms and -(O)C-CH 3;
  • R 1 is independently selected from the group consisting of -CH 2 , -CH 2 -CH 2 -, -CH 2 -CH(CH 3 )-, and -CH(CH 2 OH)-;
  • R 2 is independently selected from the group consisting of alkyl of from 1 to 4 carbon atoms, hydroxyl substituted alkyl of from 1 to 4 carbon atoms and -(o)C-CH 3 ; and n is a number of from 1 to 4; and mixtures thereof, in an amount ranging from about 10 to about 60 parts by weight ( PBW) ; b. a water miscible monoalkanol of about 1 to about 8 carbon atoms in an amount of from about 10 to about 60 PBW; and c. a water miscible saturated aliphatic ketone containing up to 12 carbon atoms present in an amount from about 10 to about 50 PBW, the total of a + b + c equaling 100 PBW.
  • PBW parts by weight
  • PBW water miscible monoalkanol of about 1 to about 8 carbon atoms
  • c a water miscible saturated aliphatic ketone containing up to 12 carbon atoms present in an amount from about
  • Fig. 1 is a schematic diagram of the process of the present invention including the use of the solvent by-products
  • Fig. 2 is a schematic view of a cyclonic spray scrubber which is a liquid absorber for the gaseous effluent.
  • any organic solvent based coating composition may be employed in particular organic based primers and top coat coating compositions that are employed by the transportation industry specifically the automotive industry.
  • the materials that are generally employed by the automotive industry are liquid paints, such as lacquers, which are oil based paints that for a film by evaporation of the solvent or by congealing from a molten state.
  • enamels are employed which are oil based paint compositions containing binders that form a film by oxidation or polymerization on exposure to air.
  • a wide variety of well known coating compositions may be employed, such as epoxy resins, vinyl resins, phenolic, acrylic resins, urethane coatings, silicon resins, amino resins, alkyd resins, and the like. It is to be appreciated that a wide variety of these coating compositions are currently known in the current state of technology.
  • the most preferred coating composition is an acrylic based top coat composition currently employed by the automotive industry.
  • a second preferred coating composition is a high solids urethane coating composition described more completely in U.S. Patent 4,070,509.
  • coatings may also be employed, such as polyesters, polyamides, silicons, poly benzimidazole and the like.
  • acrylic resins the most preferred are the acrylic resins.
  • organic solvents those that contain a variety of organic materials normally including hydrocarbons that are in the liquid state at ambient temperature and pressure, such as hexane, cyclohexane, heptane and the like.
  • the organic solvents may also contain aromatic based solvents, such as the benzene based and naphthalene based materials and the alkyl derivatives and hydroxyl derivatives thereof, such as toluene, xylene, and the like, phenol, naphthalene, tetrahydronaphthalene, butyl phenol, bisphenol A or F, ethyl benzene, cumene, acetophenone, methylphenyl carbinol and the like.
  • aromatic based solvents such as the benzene based and naphthalene based materials and the alkyl derivatives and hydroxyl derivatives thereof, such as toluene, xylene, and the like, phenol, naphthalene, tetrahydronaphthalene, butyl phenol, bisphenol A or F, ethyl benzene, cumene, acetophenone, methylphenyl carbinol and the like.
  • the present invention concerns itself with utilization of a paint thinner or a paint reducer which is applied simultaneously with the organic solvent based paint.
  • a paint thinner or a paint reducer which is applied simultaneously with the organic solvent based paint.
  • thinner and coating composition are pre-blended and applied as though it were one coating composition or paint.
  • thinner is meant a composition which reduces or dilutes or assists in the application of the desired coating composition or paint because it can dissolve or disperse the organic solvent based coating composition.
  • This solvent or thinner is used in an amount from about 10 to about 95 PBW of the total applied composition where the remaining portion of the composition is the organic solvent based coating composition actually being applied.
  • the thinner or reducer contains a completely water miscible organic based solvent composition.
  • completely water miscible organic based solvent composition is meant a composition that is comprised entirely of an organic material. preferably containing just carbon, hydrogen and oxygen atoms, which is a solvent for the organic based coating composition and is soluble in water in its entirety, even though some of the components may not be completely water soluble.
  • Suitable Group a) thinners are: monoalkyl or dialkyl ether of ethyl ene glycol or diethylene glycol, or the mono-, di-, or tri- alkyl ether of triethylene glycol and the acetate derivatives thereof.
  • the alkyl group ranges from 1 to 4 carbon atoms.
  • Suitable examples are saturated glycols containing at least four carbon atoms or is a compound containing Forrm ⁇ la I :
  • R is independently selected from the group consiting of hydrogen, alkyl of from 1 to 4 carbon atoms and -(O)C-CH 3 ;
  • R 1 is independently selected from the group consisting of -CH 2 , -CH 2 -CH 2 -, -CH 2 -CH(CH 3 )-, and -CH(CH 2 OH)-;
  • R 2 is independently selected from the group consisting of alkyl of from 1 to 4 carbon atoms, hydroxyl substituted alkyl of from 1 to 4 carbon atoms and -(O)C-CH 3 .
  • a preferred thinner is of Formula II:
  • R, R 2 and n are as described above; and R4 is a saturated alkylene group of from 2 to 4 carbon atoms.
  • Exemplary Group a) materials are Cellosolve (trademark of Union Carbide for monoethyl ether of ethylene glycol), methyl Cellosolve, butyl Cellosolve, isobutyl Cellosolve, hexyl Cellosolve, Carbitol (trademark of Union Carbide for monoethyl ether of diethylene glycol), butyl Carbitol, hexyl Carbitol, monobutyl ether of propylene glycol, mor.opropyl ether of propylene glycol, monomethyl ether of propylene glycol, monomethyl ether of dipropylene glycol, butoxytriglycol C 4 H 9 O( C 2 H 4 -O) 3 H, methoxytriglycol CH 3 O( C 2 H 4 -O-) 3 H, ethoxytriglycol C 2 H 5 O( C 2 H 4 O) 3 , l,butoxyethoxy-2-propanol, diethylene glycol, tri
  • the water miscible alcohols that may be employed in the present invention have from 1 to 8 carbon atoms, such as raethanol, ethanol, propanol, butanol, iscbutanol, pentanol, hexanol, heptanol, octanol, methylamyl alcohol and the like.
  • the water miscible aliphatic ketones that may be employed in the present invention are acetone, methyl ethyl ketone, diethyl ketone, methyl propyl ketone, methyl isobutyl ketone, methoxy acetone, cyclohexanone, methyl n-amyl ketone, methyl isoamyl ketone, ethyl butyl ketone, diisobutyl ketone, isophorone, acetyl acetone ( 2 ,4-pentane dione) , diacetone alcohol (CH 3 ) 2 C(OH)CH 2 C(O)CH 3 .
  • organic based materials may be added to the thinner or reducer in order to impart additional solvency properties to the material.
  • additional optional materials be water miscible.
  • They are generally acids and esters, where the acid contains from 1 to about 6 carbon atoms, such as formic acid, acetic acid, propionic acid, butyric acid, valeric acid and the like.
  • Suitable esters that may be employed are methyl acetate, ethyl acetate, hexylene glycol diacetate, dimethyl ester of succinic acid, glutaric acid, adipic acid and the like, wherein the number of carbon atoms that may be employed ranges up to about 10.
  • gaseous effluent formed from the application of paint not only includes the application of the paint itself, but the volatilization of the solvent from the liquid paint during the drying of the liquid paint.
  • gas is meant to include not only a gas phase effluent, but also an atomized paint overspray formed during the application of the paint to a substrate.
  • the most preferred gaseous effluent is one that contains solvents in the gas phase for liquid paint which solvents are a mixture of substances, in particular, a hydrocarbon substance and an oxygenated substance.
  • oxygenated is meant organic solvents such as those for paints that contain oxygen in the molecule of the solvent either as an alcohol, a portion of an acid, an ester, or an ether.
  • the paint is atomized, such as airless, by air or electrostatically.
  • the paint overspray from the paint spray booth is collected in a water wash by a water curtain.
  • the paint applied to the substrate is then dried by passing it through a heated chamber wherein the solvent is volatilized.
  • gaseous effluent is formed.
  • the effluent Prior to passing the gaseous effluent to the atmosphere, the effluent is then treated according to one aspect of the process of the present invention which is to sparge or bubble, or pass the gaseous effluent into a liquid absorbing means, such as a liquid absorber which is a solvent for the gaseous effluent.
  • the liquid absorber with gaseous effluent therein may be retained in a suitable reservoir and may be subsequently collected and reclaimed as desired.
  • the advantage of using a liquid absorbing means is that it can be readily handled, pumped, stored and reclaimed.
  • liquid absorbing means of the present invention By employing the liquid absorbing means of the present invention, one may simplify the total pollution control of an industrial plant. In this manner, there need be no variation to the organic paint systems that are currently employed, for one is concerned not with modification of the paint system itself under this invention, but rather the absorption of the gaseous effluent and the most efficient, economical reclamation of the liquid absorbing means, as well as the organic based solvents.
  • in the normal operation of a paint spray booth water wash there is a curtain of water which washes the walls of a painting zone or spray booth. The water may be sprayed onto the walls or somehow collect the paint overspray.
  • the liquid absorbing means of the present invention is one that is non-reactive with the gaseous effluent.
  • the liquid absorbing means may be one that is liquid and is optionally substantially non-volatile at ambient temperatures and pressures, as well as the temperatures and pressures in which the industrial process and reclamation of the organic solvent is operable. Most preferably, the liquid absorbing means is water. It is to be appreciated that some small amount of hydrolysi s will take place when an organic ester is part of the thinner and water is the liquid absorbing means.
  • liquid absorbing means are those having a vapor pressure of less than 1 mm Hg pressure at 68oF (20oC), most preferably less than 0.01 mm Hg.
  • suitable liquid absorbing means are polyoxyalkylene glycol, preferably of the structure where R 3 contains 2 to 4 carbon atoms and m ranges from 2 to 2000 as polyoxyethylene glycol, polyoxypropylene glycol, polyoxybutylene glycol; saturated aliphatic polyols having from 2 to 12 carbon atoms as glycerol, dibasic esters such as the dialkyl (up to 8 carbon atoms per group) esters of saturated aliphatic polycarboxylie acids (up to 10 carbon atoms per acid group), such as dialkyl oxalate, dialkyl malonate, dialkyl succinate, dialkyl glutarate, dialkyl adipate, dialkyl pimelate, dialkyl suberate, dialkyl azelate, dialkyl sebacate and the like; saturated ali
  • An alternative liquid absorbing means is a 50-50 mixture by volume of didecyl phthalate and a polyoxyalkylene glycol (Ucon, LB-65, trademark of Union Carbide) having a vapor pressure of less than 0.01 mm Hg pressure at 68oF (20oC) .
  • liquid absorbing means when used, one having as low a vapor pressure as possible should be employed. This will allow as little of the liquid to be volatilized as possible during the absorption of paint spray effluent.
  • water when water is used as the liquid absorber, the handling of the system is improved because of the affinity for water of all of the components of the system, i.e., the coating composition dissolved in the water miscible thinner.
  • the overall process of the present invention is described in Fig. 1 wherein the gaseous effluent is formed at 10, which effluent is passed into a liquid absorbing means containing a liquid absorber described herein.
  • the outlet of said* liquid absorber permits the absorbed gaseous effluent to be passed to a reclamation zone 14.
  • the liquid absorber is separated from the gaseous effluent.
  • the liquid absorbing means is then recycled by means of line 16 back to the liquid absorber for subsequent utilization .therein.
  • the gaseous effluent is primarily solvent in the gas phase obtained from the liquid paint. It may be reprocessed in the manufacture of liquid paint 18.
  • FIG. 2 is a schematic diagram of a cyclonic spray scrubber 20 having an air of gaseous inlet 22.
  • the gas passing through inlet 22 is tangentially passed into the cyclonic chamber 24 which has a liquid inlet 26 and a liquid outlet 27.
  • the inlet 26 permits the liquid absorber to be passed through a duct 28 and sprayed through the spray manifold sections 30 comprised of a plurality of nozzles.
  • the top of the spray manifold is a core buster disc 32.
  • the gas effluent from the industrial process enters through the inlet 22 and circles around the cyclonic chamber coming in direct contact with the sprayed liquid absorber 34, which is a fine division of the liquid absorber permitting a high surface area for the air to come into contact therewith.
  • a very high efficiency is achieved in that substantailly all of the gaseous effluent containing undesirable pollutants is absorbed in the liquid phase with the remaining gas exiting through the anti-spin vanes 36.
  • the liquid absorber is then collected at the outlet 27 for subsequent process at the reclamation zone 14.
  • the cyclonic chamber can be manufactured from any metal stable to the gaseous effluent, e.g., stainless steel, glass-lined metal chambers and the like.
  • a series of cyclonic chambers may be used to purify the gaseous effluent in step-wise fashion by passing the effluent from each cyclonic chamber to the next.
  • Cyclonic spray scrubbers described herein are further described in Chemical Engineers Handbook, Fourth Edition, at Pages 18—33 and following.
  • the reclamation zone is primarily directed towards a means of separating the liquid absorber from the gaseous effluent which is absorbed therein. Any means may be employed to form the separation. Two principal techniques are preferred. One is a vacuum distillation and the second is the utilization of microfiltration. In the vacuum distillation, it is highly preferred that there be a large differential between the boiling point of the liquid absorber and the gaseous effluent absorbed therein. If the differential is at least 200oF, then a high separation efficiency can be achieved.
  • the linear velocity of the gaseous effluent should be about 5' /sec, preferably about 1 to about 4' /sec (0.31 meters to 1.22 meters). If the gaseous effluent velocity was substantially increased there may not be sufficient absorption of the effluent by the liquid absorber water. The slowing of the effluent movement significantly increased contact efficiency between the liquid absorber spray and the gaseous effluent.
  • a more efficient technique for separating the " liquid absorber from the gaseous effluent absorbed therein may be through the utilization of membranes which facilitate a microfiltration approach.
  • membranes are inserted in a conduit through which the liquid passes.
  • a low molecular weight substance will pass therethrough while a higher molecular weight substance will be prevented from passing therethrough. This thereby allows for reclamation of the absorber so it can be reprocessed and used in the overall process.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)
PCT/US1980/000840 1980-07-07 1980-07-07 A composition and method for decreasing pollution resulting from the application of a coating composition WO1982000151A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/US1980/000840 WO1982000151A1 (en) 1980-07-07 1980-07-07 A composition and method for decreasing pollution resulting from the application of a coating composition
JP55502034A JPS57501180A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1980-07-07 1980-07-07
DE803050468T DE3050468A1 (de) 1980-07-07 1980-07-07 A composition and method for decreasing pollution resulting from the application of a coating composition
GB8202428A GB2089236B (en) 1980-07-07 1980-07-07 A composition and method for decreasing pollution resulting from the application of a coating composition

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/US1980/000840 WO1982000151A1 (en) 1980-07-07 1980-07-07 A composition and method for decreasing pollution resulting from the application of a coating composition
WOUS80/00840800707 1980-07-07

Publications (1)

Publication Number Publication Date
WO1982000151A1 true WO1982000151A1 (en) 1982-01-21

Family

ID=22154423

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1980/000840 WO1982000151A1 (en) 1980-07-07 1980-07-07 A composition and method for decreasing pollution resulting from the application of a coating composition

Country Status (4)

Country Link
JP (1) JPS57501180A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3050468A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2089236B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
WO (1) WO1982000151A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2177018A (en) * 1985-06-15 1987-01-14 Becorit Apparatus and method for treating a gas or a gaseous mixture

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE207554C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) *
DE726287C (de) * 1939-05-16 1942-10-09 Platen Munters Refrigerating S Verfahren zum Abscheiden von OEl- oder Lackfarben, Firnissen o. dgl. beim Spritzmalen von Gegenstaenden
US3429823A (en) * 1963-02-04 1969-02-25 Oakite Prod Inc Paint coagulator compositions
US3463735A (en) * 1967-10-18 1969-08-26 Drackett Co Glass cleaning composition
US3686701A (en) * 1969-02-04 1972-08-29 Oreal Cosmetic composition containing microencapsulated solvents for nail enamel
US3972824A (en) * 1974-09-25 1976-08-03 Vicksburg Chemical Co. Method for cleaning nitrogen oxides from air
US4052327A (en) * 1974-01-07 1977-10-04 Addressograph Multigraph Corporation Compositions for eradicating electrophotographic images from translucent paper

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE207554C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) *
DE726287C (de) * 1939-05-16 1942-10-09 Platen Munters Refrigerating S Verfahren zum Abscheiden von OEl- oder Lackfarben, Firnissen o. dgl. beim Spritzmalen von Gegenstaenden
US3429823A (en) * 1963-02-04 1969-02-25 Oakite Prod Inc Paint coagulator compositions
US3463735A (en) * 1967-10-18 1969-08-26 Drackett Co Glass cleaning composition
US3686701A (en) * 1969-02-04 1972-08-29 Oreal Cosmetic composition containing microencapsulated solvents for nail enamel
US4052327A (en) * 1974-01-07 1977-10-04 Addressograph Multigraph Corporation Compositions for eradicating electrophotographic images from translucent paper
US3972824A (en) * 1974-09-25 1976-08-03 Vicksburg Chemical Co. Method for cleaning nitrogen oxides from air

Also Published As

Publication number Publication date
GB2089236B (en) 1984-03-28
DE3050468A1 (de) 1982-08-26
JPS57501180A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1982-07-08
GB2089236A (en) 1982-06-23

Similar Documents

Publication Publication Date Title
US4265944A (en) Method for decreasing pollution resulting from the application of a coating composition
CA2771697C (en) Low/zero voc glycol ether-esters and use as clean-up solvents and paint thinners
US4339248A (en) Process for the purification of gaseous effluent from industrial processes
US4494967A (en) Process for the removal of impurities from a gas stream containing solvent vapors
EP0586694B1 (de) Verfahren und vorrichtung zur emissionsarmen spritzapplikation
CA2063739C (en) Method of activating n-methyl-e-pyrrolidone (nmp) and/or gamma-butyrolactone (blo) varnish and paint remover solvents
US5334255A (en) Method for removing and reclaiming excess paint from a paint spray booth
US4333845A (en) Coating composition thinner for decreasing pollution resulting from the application of a coating composition
US4444573A (en) Hydrotropes and uses thereof
EP0652912A1 (en) Method for removing and recovering paint overspray in a water wash spray booth
WO1982000151A1 (en) A composition and method for decreasing pollution resulting from the application of a coating composition
CA1141504A (en) Composition and method for decreasing pollution resulting from the application of a coating composition
US5977269A (en) Polyester/vinyl dioxolane based coating compositions
US5466300A (en) Method for removing and reclaiming excess uncured paint from paint spray booth
CA1082889A (en) Process for the purification of gaseous effluent from industrial processes
US5198143A (en) Composition for the treatment of overspray in paint spray booths containing secondary alcohol esters and surfactants
FR2487841A1 (fr) Diluant miscible a l'eau pour une composition de revetement, et son utilisation pour diminuer la pollution resultant de l'application de la composition
AU640431B2 (en) Process to reclaim paint from paint booth flood sheet system
DE3115198A1 (de) Haertbare ueberzugsmittel und verfahren zur herstellung kratzfester ueberzuege auf kunststoffen
WO2018004473A2 (en) Coalescing agent derived from dioxolane derivatives
US5217640A (en) Method of activating α-butyrolactone (BLO) with ethyl 3-ethoxypropionate (EEP) to provide improved varnish and paint remover solvents
JPH04166210A (ja) 溶剤の大気排出抑制方法
JPH0871488A (ja) 塗料回収再利用方法
KR20020079766A (ko) 에스테르의 제조 방법
JP2001214125A (ja) ポリエステル／ビニルジオキソランベースコーティング組成物

Legal Events

Date Code Title Description
AK Designated states

Designated state(s): DE GB JP

Kind code of ref document: A1

Designated state(s): DE GB JP

RET De translation (de og part 6b)

Ref document number: 3050468

Country of ref document: DE

Date of ref document: 19820826

WWE Wipo information: entry into national phase

Ref document number: 3050468

Country of ref document: DE