CN1090308A - Use has the paint detackifying process of polymeric dispersions of the formaldehyde content of minimizing - Google Patents
Use has the paint detackifying process of polymeric dispersions of the formaldehyde content of minimizing Download PDFInfo
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- CN1090308A CN1090308A CN93112669A CN93112669A CN1090308A CN 1090308 A CN1090308 A CN 1090308A CN 93112669 A CN93112669 A CN 93112669A CN 93112669 A CN93112669 A CN 93112669A CN 1090308 A CN1090308 A CN 1090308A
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- formaldehyde
- melamine
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- diketone
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- 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
- C09D7/71—Paint detackifiers or coagulants, e.g. for the treatment of oversprays in paint spraying installations
Abstract
Contain the melamino-formaldehyde resin dispersion that surpasses the desired free formaldehyde content of health and/or environmental protection and can use the diketone agent treated, reducing free formaldehyde content, and do not weaken, in some cases even the paint detackifying power of reinforcement dispersion.
Description
The going of coating of being carried secretly in the recirculated water in of the present invention relating in the water, the particularly spray booth of general-utility car factory and analogue glued." coating " described here speech is meant the various general terms that contain the water-insoluble organic binder bond that comprise the coating that is generally used for spraying operation, includes but not limited to add at the bottom of oil-based paint, enamel paint, lacquer, the solvent based car body of high solid, the solvent based car body varnish of high solid, water base car body priming paint and varnish, contains the urethane polymkeric substance of car body finish paint and solvent and water-based primer.These coating can adopt pitch, acrylic resin, vibrin, melamino-formaldehyde resin, isocyanate resin, Resins, epoxy, Synolac, melamine Synolac and the block polyurethane resin in other resins, and appropriate solvent, pigment and supplementary additive.The coating of excessive spraying, promptly not dropping on needs the lip-deep coating of protection, if do not deal with, adheres to easily on the wall and any surface that other touches of spray booth, for example on the surface of water jet standpipe, nozzle and analogue.Use method of the present invention to convert the coating of excessive spraying to be suitable for convenient processing non-sticky sludge.
Use a kind of melamine aldehyde polymer, it is known in the prior art that particularly a kind of melamino-formaldehyde resin acid colloids solution effectively goes sticking processing.But contain quite a large amount of free formaldehydes in the polymkeric substance that this class is in the past made by formaldehyde.For example, most merchants sell the free formaldehyde that the liquid melamine formaldehyde resin contains at least 0.2% weight.(the described per-cent in back all refers to weight percent unless otherwise indicated.) it is believed that formaldehyde is a kind of carcinogens, therefore wish that usually its content is no more than bottom line in the material therefor.
An object of the present invention is to provide a kind of detackifying process, it is effective as method of the prior art at least, and the chance that the workman of using method is exposed to free formaldehyde is reduced to minimum.
In this manual, unless at claims, specific embodiment and other opposite explanation part is arranged clearly, all numerals that limit quantity of material or reaction conditions or application all are interpreted as being limited by " approximately " speech, with definite the widest scope of the present invention.The present invention preferably adopts in practice in the definite digital limit that provides.And remove other clear and definite opposite explanation is arranged, if each separate constituent is described to be applicable to or is preferred for a certain purpose in one group, then the mixture of one or more compositions is same suitable or be preferred for this purpose in this group.
On April 7th, 1987 people such as disclosed Mizuno about melamino-formaldehyde resin and in the U.S. Pat 4,656,059 of going the application in sticking, remove with any and offer some clarification on here outside the opposite content, combine as a reference at this.Find that the melamino-formaldehyde resin of disclosed the sort of type can react with water-soluble organic " beta-diketon " compound in the Mizuno patent, this is a kind of structure that contains:
Compound, wherein the free linkage that is marked is interpreted as not hindering with the part of formaldehyde reaction with any other and combines, to generate a kind of modified resin, its free formaldehyde content is no more than 80% of the formaldehyde content that dissociates in the initial melamine formaldehyde (MF) dispersion of reacting with diketone properties-correcting agent, and be no more than 0.20%, thereby this modified resin is still effective for release coating.(the free formaldehyde generation irreversible reaction that it is believed that bimolecular beta-diketone compound as defined above and a part produces following chemical structure:
Wherein the formaldehyde of preexist is bonded to nonvolatile in fact form.) initial resin of certain volume or the product that the free formaldehyde content in the modified resin is defined as free formaldehyde concentration and volume.Can go the method for gluing that the melamino-formaldehyde resin of above-mentioned modification is advantageously combined with other material by the unmodified melamino-formaldehyde resin of a kind of well-known in essence in the prior art usefulness, as flocculation agent, defoamer etc., make the actual value of sticking and flocculating effect reach maximum.
Various embodiments of the present invention comprise the aqueous liquid composition that contains modification melamine formaldehyde (MF) polymeric dispersions, when being added in the recirculated water of spray booth, it can be used for gluing, comprise the technology for preparing this modification dispersion, also comprise and use this to contain the detackifying process of the composition of modification melamine formaldehyde (MF) polymeric dispersions.This detackifying process can be advantageously used for the part of the method that comprises the steps: (I) will be the paint detackifying and the flocculation of carrying secretly in the liquid of base with recirculated water, generate the flocculation sludge, (II) is the other coating of liquid conveying of base from residuary water with this residuary water for isolating by the coating solid that is gone to glue and flocculated and (III) the basic liquid.Yet except adopting specific slimicide, according to the present invention, can also adopt in this field is that well-known various other method realizes gluing in essence, and all in broad range of the present invention.
Being used for preferably water dissolubility dione compounds of the present invention is aceto-acetamide, is also referred to as β-ketone-butyramide (CAS number of registration No.5977-14-0).Often mention aceto-acetamide in the following description, only limit to this but should not be construed as the present invention.Other suitable diketone properties-correcting agent comprises other β-keto-earboxylic acid and salt thereof, ester, acid amides or the like, for example etheric acid or its ethyl ester and beta-diketon, for example methyl ethyl diketone.
Be used for basic melamine formaldehyde (MF) polymkeric substance of the present invention preferably by means known in the art by the preparation of melamine and formaldehyde reaction, formaldehyde in 6: 1 to 1: 1 scopes, is preferably 4: 1 to 1: 1, more preferably 3.0: 1.0 to 1.0: 1.0 to the mol ratio of melamine.Composition of the present invention is transported to spissated form usually and makes land used, the concentration of this dispersive polymer solids is preferably in 1 to 20 scope, more preferably 3 to 15, or more preferably 6.0 to 12.0, %, the concentration of free formaldehyde preferably in 0.10 to 0.35 scope, more preferably 0.10 to 0.30, or more preferably 0.20 to 0.30, %; PH value preferably in 1.0 to 3.0 scopes, more preferably 1.5 to 2.3, or more preferably 1.7 to 2.1, all these values be and the reaction of diketone properties-correcting agent before value.Modification remove the preferred same pH value of viscosity resin.
If owing to add a large amount of diketone properties-correcting agent or such as diketone properties-correcting agent such as water therein the dissolved solvent that melamino-formaldehyde resin concentration is reduced is too many, then can influence sticking effectiveness of going of this modified resin dispersion.Otherwise when the consumption of properties-correcting agent was in preferable range, in fact the going sticking effectiveness under many situations surpassed unmodified polymeric dispersions.For preferred aceto-acetamide properties-correcting agent, add-on should be greatly to adding the precipitation that causes any visible form in back 15 days.Preferred aceto-acetamide with the weight ratio of the initial free formaldehyde content of its reaction in 135: 1.0 to 6: 1.0 scopes, be preferably 80: 1.0 to 13: 1.0, or more preferably 52: 1.0 to 33: 1.0.Perhaps, for any diketone properties-correcting agent, preferred add-on should make in use the free formaldehyde content of modified resin dispersion be used to prepare the modified resin dispersion the initial resin dispersion 15 to 65, more preferably 17 to 50, or more preferably 20 to 40, %.Independently, this modification go the concentration of the melamine formaldehyde (MF) polymer solids of tacking compositions to be at least preparation this goes 50 of melamine formaldehyde (MF) polymer solids concentration in initial resin of tacking compositions, more preferably 62, or more preferably 75, %.
Another embodiment of the present invention is a kind of concentrated tacking compositions that goes of modification, is made up of water and following material substantially:
(A) 0.5 to 20, or preferred especially in the following order, 1.9 to 15,3.6 to 12 or 5.0 to 8.0, the dispersion melamine formaldehyde (MF) polymer solids of %;
(B) 0.008 to about 0.20, and more preferably 0.01 to 0.1 or more preferably 0.030 to 0.060, the free formaldehyde of %;
(C) product that reacts between free formaldehyde and water-soluble beta-diketon modifier molecules and optional can the choosing,
(D) unreacted beta-diketon modifier molecules.
Free formaldehyde content of the object of the invention and ratio given below are preferentially selected the quantitative spectral absorption method to 550 nanometers (following usefulness " nm " expression) wavelength light for use, measure with the commercial reagent with the equipment that formaldehyde is transformed into colored reaction product sample.Required reagent and equipment is by CHEM etrics, Inc.of Calverton, and Virginia provides, and believes in U.S. Pat 3634038 and has described.Required Vacu-Vials
Catalog number (Cat.No.) be K-4203, and use a kind of " Purpald that is called
" highly sensitive reagent and formaldehyde in basic solution, react and produce a kind of purple.By means of the standard of editing, to specify these Vacuvials of preparation by manufacturers
The absorption of solution can change into directly the absorption to free formaldehyde concentration, after sample is suitably diluted, if necessary, make free concentration of formaldehyde in the spectrum tool reach free formaldehyde weight 0/1000000th to being written as " ppm " below the 10() in the scope.
Aceto-acetamide or other diketone properties-correcting agent and the reaction that contains between the formaldehyde of polymkeric substance can be carried out under this polymeric dispersions is any temperature of liquid.Usually be preferably under the temperature that 20-30 ℃ of people feels comfortably cool, this is not only to convenient, also is owing to observed free formaldehyde content increase in the initial melamino-formaldehyde resin under higher temperature, therefore needs to add more diketone properties-correcting agent.To be enough to finish the reaction under the room temperature from commercial production to the common time the modified resin of using, this from the data of following embodiment obviously as seen.
The modification of the polymeric dispersions that the present invention is contemplated not only comprises the minimizing of initial free formaldehyde content, is also included within interior reaction product and any unreacted diketone properties-correcting agent that keeps the diketone properties-correcting agent of any initial free formaldehyde and adding of polymeric dispersions of modification.
When practicality, a kind of modification melamine formaldehyde (MF) polymeric dispersions of the invention described above joined to contain to go sticking and/or coagulate in the water of carrying coating secretly of wadding, the ratio that preferable amount makes solid content in the polymer-modified dispersion and the solid content that is removed stick coating is in one of following scope, arrange with the preferred sequence that increases progressively: 0.01: 1 to 5: 1,0.01: 1 to 2: 1,0.05: 1.0 to 0.50: 1.0, or 0.15: 1.0 to 0.23: 1.0.To go stick coating from recirculated water, to remove with usual method then.
Can further understand the present invention in conjunction with following indefiniteness embodiment and comparative example.
The preparation embodiment of modification dispersion
In these examples, initial melamine formaldehyde (MF) polymeric dispersions is MAGNIFLOC
TM515C, a kind of commodity that can buy from U.S. Cyanamide Corp., have the following properties that manufacturers is described: proportion is 1.01 to 1.035; PH value is 1.7 to 2.1, and solid content is 8.2 to 8.6%.
The source that is used as the aceto-acetamide of diketone properties-correcting agent is BKB
TM, a kind of commodity that can buy from Eastman Chemical Co., its supplier is called a kind of 30% acetoacetyl amine aqueous solution.With these two kinds of components, mix with in some cases additional water, stirred 8 hours earlier, in the container of sweet envelope not, to preserve the most nearly 40 days then, the free formaldehyde content analysis is done in sampling regularly.Some results are reflected in the following table 1.These results show, after stirring in the junior one sky, free formaldehyde content has been reduced in the mixture is enough to make all these compositions as the qualified improved composition in the meaning of the present invention.
Go sticking embodiment and Comparative Examples
In an indicating graduation spray booth equipment, carry out these technological operations.Use 1041 premium on currency and all other compositions as follows.Will be except that coating below special test number describe down shown in material join in the recirculated water of this spray booth, perhaps regularly measure by a flow control pump, perhaps by slowly reinforced to the circulating pipe ingress with a basic addition, coating then sprays into wherein with the very proximate coherent fashion of the actual use of full scale spray booth with a kind of.The solid sludge that generates is collected and separates with the used ordinary method of actual spray booth.
The note of table 1
The average deviation of the shown analytical procedure that is used for the free formaldehyde value is about ± and 5%.Therefore, be not that all above-mentioned numerals are significant figure.At MAGNIFLOC
TMIn the 515C raw material free concentration of formaldehyde in about ten kinds of different measurements that take several time-of-weeks scope about 2050 to 2750ppm, most of independent measurement scopes 2050 to 2200ppm.The concentration of free formaldehyde in unmodified raw material still was at least 2000ppm after under the condition of storage identical with data shown in this table of generation 21 days, be at least 1800ppm after 40 days.
The space shows at the appointed time not to be measured
Embodiment 21
Circulating water system is opened, pH value is transferred to 9.0 to 9.5 by in required water, adding 50%NaOH solution on request.The composition of describing in 230 milliliters (following table is shown " ml ") top table 1 1.6 is slowly added in these recycle systems, and 2 minutes (following table is shown " min ") back restrains (following table is shown " g ") coating (CMC with 40 to 60g/min speed with 30 to 40
TM" DO3M Silver Slate Gray Metallic ") spray in the chamber.Making this circulation stop time enough after 5 minutes still is viscosity to measure coating.Continue this circulation then, in system, add 530ml composition 1.6 after 3 minutes lentamente.Spray into additional 30 to 40g coating to indoor again after 2 minutes, making circulation stop the sufficiently long time after 3 minutes to determine that coating still is viscosity.
Recover circulation at once, slowly add other 500ml composition 1.6 to system after 2 minutes.Measure the pH value of recirculated water once more, be found to be 8.5.Find that now most coating have gone to glue, but also have some toughness.Add 500ml composition 1.6 again, go to glue and finish substantially, micro-adherent coatings is just arranged on indoor foam.The pH value of recirculated water system is 8.0.
Embodiment 22 and comparative example 22
Used coating is Dupont Metallic Blue in these examples.Operation resembles embodiment 21 very much in embodiment 22, adds composition 1.6 in succession, the coating and the other 50%NaOH aqueous solution, and this is to have added 427ml composition 1.6 when 936g coating goes to glue fully in order to make pH value remain on 9.0 to 9.5, to the last to finish.
In comparative example 22, what replace composition 1.6 is a kind of by 9 parts of weight MAGNIFLOC
TM515C and 1 part of composition that weight water is mixed with, the concentration of mixing the dispersion melamine formaldehyde (MF) polymer solids kept identical like this with composition 1.6.Go sticking effect very different with what this comparative composition of similar quantity was used for similar quantity coating of the same race.
Embodiment 23
In the present embodiment the described improved composition 1.8 of table 1 is used as slimicide, coating is that the red Rankine of a kind of Du Pont belongs to alkaline admixture, and its viscosity is 24 seconds, in a #2Zahn cup.Originally pH value is transferred to 9.25.Before in testing laboratory, not spraying into any coating, observe foaming, therefore in recirculated water, add the common hydrocarbon-based emulsions defoamer of 10ml (P3
TMDefoamer 2483 can be buied by Henkel Corporation), observe pH value and reduce to 9.14.Begin continuously quantitatively composition 1.8 in recirculated water then, be a kind of 0.1% commercially available polyacrylamide flocculant (the 494C type of U.S. Cyanamid), and the 50%NaOH aqueous solution (" basifier ") and begin in the chamber, to spray into coating with the speed of 60g/min.After 5 minutes, when adding 220ml composition 1.8 and 150ml basifier, observe the recirculated water that well removes sticking effect and substantially transparent, have only trace to carry grumeleuse secretly.Go into the same defoamer of other 3ml in after 2 minutes.After 5 minutes, add 200ml composition 1.8 and other 75ml basifier.Observe continuation and glue effect and transparent water just like preceding well going.After 10 minutes, continue to add same material, in 20 minutes after such beginning operated, finished 820ml composition 1.8,315ml basifier, the whole reinforced process of 999g coating and 2.01 flocculant solutions.When rising to 9.8, pH value interrupts the adding of basifier.Continue to add composition 1.8, coating and flocculation agent and reach 5 minutes, once add 3ml such as preceding defoamer during this period, go to glue and still feel quite pleased with the water clarity.
When whole process was finished, through operation in 25 minutes altogether, all material of adding was a 880ml composition 1.8,315ml basifier, 2550ml flocculant solution, 1248g coating and 16ml defoamer.
Claims (20)
1, a kind of paint detackifying process, go the slime body composition to mix with a kind of modification melamine formaldehyde (MF) polymkeric substance this coating, this goes the slime body composition to contain about 1 make to the initial dispersion body of about 20% melamine formaldehyde (MF) polymer solids and (ii) one or more water-soluble organic beta-diketone compounds reactions in water by (i) is a kind of, the pH value of the initial dispersion body of described (i) is about 1.0 to about 3.0, and free formaldehyde content about 0.10 to about 0.35% scope, described melamine formaldehyde (MF) polymkeric substance is made by melamine and formaldehyde reaction, the mol ratio of formaldehyde and melamine at about 6: 1 to about 1: 1 scope, water-soluble organic beta-diketone compound total amount (ii) is enough to make polymer-modifiedly goes in the tacking compositions free concentration of formaldehyde to be lower than 0.20%, and the polymer-modified unmodified resin that goes in the tacking compositions whole free formaldehyde contents to be no more than to be used for to prepare it all free formaldehyde contents 80%.
2, a kind of method as claimed in claim 1, wherein this modification goes the slime body composition to contain about 3 make to the initial dispersion body of about 15% melamine formaldehyde (MF) polymer solids and (ⅱ) one or more water-soluble organic dione compounds reactions in water by (ⅰ) is a kind of, the pH value of the initial dispersion body of described (ⅰ) is about 1.5 to about 2.3, free formaldehyde content is about 0.10 to about 0.30%, described melamine formaldehyde (MF) polymkeric substance is made by melamine and formaldehyde reaction, formaldehyde and melamine mol ratio in about 4: 1 to about 1: 1 scopes, the total amount of the water-soluble dione compounds of described (ⅱ) be enough to make polymer-modified go in the tacking compositions whole free formaldehyde contents the initial resin that is used for preparing it all free formaldehyde contents about 15 to about 65% scope; Polymer-modified concentration of removing melamine formaldehyde (MF) polymer solids in the tacking compositions is to be used for preparing at least 50% of initial dispersion body melamine formaldehyde (MF) polymer solids concentration that this modification removes tacking compositions; Go in the slime body composition solid content with solid in its blended coating than in about 0.01: 1 to 5: 1 scope.
3, a kind of method as claimed in claim 2, wherein go in the slime body composition solid content with solid in its blended coating than in about 0.05: 1.0 to 0.50: 1.0 scope, polymer-modified concentration of removing melamine formaldehyde (MF) polymer solids in the tacking compositions is to be used for preparing at least 62% of initial dispersion body melamine formaldehyde (MF) polymer solids concentration that this modification removes vehement composition.
4, a kind of method as claimed in claim 3, wherein this modification goes the slime body composition to contain about 6.0 make to the initial dispersion body of about 12.0% melamine formaldehyde (MF) polymer solids and (ⅱ) one or more water-soluble organic dione compounds reactions in water by (ⅰ) is a kind of, the pH value of the initial dispersion body of described (ⅰ) is about 1.7 to about 2.1, and free formaldehyde content about 0.20 to about 0.30% scope, described melamine formaldehyde (MF) polymkeric substance is made by melamine and formaldehyde reaction, the mol ratio of formaldehyde and melamine in about 3: 1 to about 1: 1 scopes, water-soluble organic dione compounds total amount of described (ⅱ) should be enough to make polymer-modified go in the tacking compositions whole free formaldehyde contents the initial resin that is used for preparing it all free formaldehyde contents about 17 to about 50% scope.
5, a kind of method as claimed in claim 4, wherein this go in the slime body composition solid content with solid in its blended coating than in about 0.15: 1.0 to 0.23: 1.0 scope, it is polymer-modified that to go melamine formaldehyde (MF) polymer solids concentration in the tacking compositions be to be used for preparing at least 75% of initial dispersion body melamine formaldehyde (MF) polymer solids concentration that this modification removes tacking compositions.
6, a kind of method as claimed in claim 5, wherein this diketone properties-correcting agent is aceto-acetamide.
7, a kind of method as claimed in claim 4, wherein this diketone properties-correcting agent is aceto-acetamide.
8, a kind of method as claimed in claim 3, wherein this diketone properties-correcting agent is aceto-acetamide.
9, a kind of method as claimed in claim 2, wherein this diketone properties-correcting agent is aceto-acetamide.
10, a kind of method as claimed in claim 1, wherein this diketone properties-correcting agent is aceto-acetamide.
11, a kind of liquid composition of forming by water and following material substantially:
(A) about 0.5 to about 20% dispersion melamine formaldehyde (MF) polymer solids, described melamine formaldehyde (MF) polymkeric substance is made by melamine and formaldehyde reaction, and the mol ratio of formaldehyde and melamine is in about 6: 1 to about 1: 1 scopes;
(B) about 0.008 to about 0.20% free formaldehyde;
(C) product that reacts between free formaldehyde and water-soluble diketone modifier molecules; With can select not select
(D) unreacted diketone modifier molecules,
The pH value of described liquid composition about 1.0 to about 3.0 scopes.
12, a kind of composition as claim 11, wherein the concentration of dispersive melamine formaldehyde (MF) polymer solids about 1.9% to about 15% scope, this melamine formaldehyde (MF) polymkeric substance is made by melamine and formaldehyde reaction, about 4: 1 of the mol ratio of formaldehyde and melamine to about 1: 1 scope, the concentration of free formaldehyde about 0.01 to about 0.1% scope.
13, a kind of composition as claim 12, wherein this melamine formaldehyde (MF) polymkeric substance is made by melamine and formaldehyde reaction, the mol ratio of formaldehyde and melamine about 3: 1 to about 1: 1 scope, pH value about 1.5 to about 2.3 scopes.
14, a kind of composition as claim 13, wherein dispersive melamine formaldehyde (MF) polymer solids concentration is about 3.6% to about 12.0% scope, free formaldehyde concentration about 0.030 to about 0.060% scope.
15, a kind of composition as claim 14, wherein dispersive melamine formaldehyde (MF) polymer solids concentration is about 5.0% to about 8.0% scope, and pH value is in about 1.7 to 2.1 scopes.
16, a kind of composition as claim 15, wherein this diketone properties-correcting agent is aceto-acetamide.
17, a kind of composition as claim 14, wherein this diketone properties-correcting agent is aceto-acetamide.
18, a kind of composition as claim 13, wherein this diketone properties-correcting agent is aceto-acetamide.
19, a kind of composition as claim 12, wherein this diketone properties-correcting agent is aceto-acetamide
20, a kind of composition as claim 11, wherein this diketone properties-correcting agent is aceto-acetamide.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US97072792A | 1992-11-03 | 1992-11-03 | |
| US07/970,727 | 1992-11-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1090308A true CN1090308A (en) | 1994-08-03 |
Family
ID=25517412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93112669A Pending CN1090308A (en) | 1992-11-03 | 1993-11-02 | Use has the paint detackifying process of polymeric dispersions of the formaldehyde content of minimizing |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1090308A (en) |
| WO (1) | WO1994010231A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109963909A (en) * | 2016-08-01 | 2019-07-02 | 斯塔尔国际有限公司 | The polymeric dispersions that acetaldehyde burst size reduces |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5599884A (en) * | 1992-11-03 | 1997-02-04 | Henkel Corporation | Amino resin dispersion with reduced aldehyde content, process therefor, and paint detackifying process therewith |
| ZA952487B (en) * | 1994-03-29 | 1995-12-18 | Henkel Corp | Paint deteackifying process using polymer dispersion with reduced formaldehyde content |
| DE19823155A1 (en) | 1998-05-23 | 1999-11-25 | Henkel Kgaa | Process to reduce the free formaldehyde content of aqueous acidic melamine-formaldehyde solutions |
| DE102005008034A1 (en) | 2005-02-22 | 2006-08-31 | Lanxess Deutschland Gmbh | Acid group-containing condensation products |
| DE102006029408A1 (en) | 2006-06-23 | 2007-12-27 | Lanxess Deutschland Gmbh | Condensation products containing sulfonic or carboxylic acid groups and based on di-aldehyde and amino compounds, e.g. glutaraldehyde and melamine and-or urea, used for tanning leather and furs |
| KR102522737B1 (en) * | 2016-12-21 | 2023-04-19 | 바스프 에스이 | Process for preparing a liquid composition of etherified melamine formaldehyde resin |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61108698A (en) * | 1984-11-01 | 1986-05-27 | 栗田工業株式会社 | Wet spray booth treatment agent |
| US5112652A (en) * | 1989-08-29 | 1992-05-12 | East Central Wax Company, Inc. | Formaldehyde scavenging process useful in manufacturing durable press finished fabric |
-
1993
- 1993-10-28 WO PCT/US1993/010132 patent/WO1994010231A1/en active Application Filing
- 1993-11-02 CN CN93112669A patent/CN1090308A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109963909A (en) * | 2016-08-01 | 2019-07-02 | 斯塔尔国际有限公司 | The polymeric dispersions that acetaldehyde burst size reduces |
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| WO1994010231A1 (en) | 1994-05-11 |
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