PT92883A - Process for the preparation of a water-based composition for cleaning glue processing machines based on amino-resins - Google Patents

Abstract

The compositions contain an alkali metal hydroxide, a poly(meth)acrylic acid, a copolymer based on styrene and maleic anhydride and, where appropriate, further comonomers, an emulsifier and a foam suppressant.

Description

2

The mixture is mixed with 30 to 50 parts of water. The present invention relates to a process for the preparation of an aqueous composition for the cleaning of a process machine such as an alkali metal hydroxide, an alkali metal hydroxide, polyacrylic acid, a copolymer of styrene-based erythromycin and, if appropriate, other comonomers, an emulsifying agent and a chelating agent in the wood materials industry, the principal - * Μ & ι. * 'Ϋ́ & The compounds of the general formula (I) are prepared from one to the usual amino, cyanoacrylate, melamine and bensoguanamine. It has been found that these rejones have been produced for a number of years with a formaldehyde preparation. Cleaning of the processing and processing machines did not cause any problems since resin residues could easily be dispersed in the water. probably due to the high concentration of nonionic metals and the non-formaldehyde-based resins produced, due to the fact that the reaction of the particles form on the processing machines which are cleaned and cleaned. which can occur in two ways. The resins harden within the acid and form molecules. Crosslinked crosses are no longer ροΐθ ^. and dissolved. the resins, during dilution for example,

αβ bath or water application, precipitate from aqueous solutions and form two phases: a) an aqueous phase, and b) a mass similar to rubber or stretching in a manner similar to that of latex, being tacky, the reality is that The mass is formed by relatively small molecules, which are however bound by intermolecular forces, to give rise to larger interconnected complexes (J.Dhesives, 1985, 17, 275 to 295, i, J. Pratt).

The residues 2b) form the main source of the soils in the wood materials industry. They cause the machines to stand longer, and therefore limit their capacity. For the removal, large amounts of water, which causes problems of wanting gas.

As the structure of the aminated resins, especially in this coagulate, is unknown up to noxious, especially the special colloidal structure, no solution of the problem can also be offered on the basis of chemical considerations. It is understood that highly viscous resins can be again converted into fine liquids with the urea, however, when they are formed similar to a latex, this method already does not result, as the scrubbing and washing agents have no effect. It is an object of the invention to provide a cleaning composition with which the machines and containers of tailings or precipitated resins can be completely and rapidly cleaned and that said composition is effective in the most reduced amounts possible The present invention relates to an aqueous cleaning composition for cleaning the glue processing machines or the base of amine resins which contains: (a) an alkali metal hydroxide

3) a poly (meth) acrylic acid? G) a copolymer based on styrene and maleic acid and usually other cosomers thereof. The present invention relates to a copolymer based on styrene and maleic acid and other cosomers thereof. - > > > > > and gt;

Suitable alkali metals are, for example, sodium, potassium and sodium hydroxide. The organic extracts were dried and evaporated to dryness. Q component \ &) " ~. and in the presence of a solid composition of the cleansing composition in the range of 1 to 30% by weight. by weight, especially 3 to 10 weight percent of the component weight (B) and the polyacrylic acid and acrylic acid acrylic acid are advantageously preferred, in a quantity, by weight of the substance of the cleansing composition in the range of 1 to 30 percent by weight, preferably in the range of 10 percent by weight, with a strength of between 10 and 10 percent by weight as the component (C ) an epoxymer is used which is based on estrogen and the anionic acid of the parent acid, and in the case of other comonomers, such copolymers are already available and are available, for example. In the literature, the term "volume" has been used in the literature, such as "volume", "volume" and "volume". mentioned in this work, is to teach a pure copolymer of styrene and nonionic anion, however, also xylene? By weight, by weight, by weight. in particular, such as C -C-C alquil alquil alquilalkylamines such as C -C-C alquil-C alquil-C alquil-C alquil-C alquil-C alquil alquil alquil, Preferably, C1-4 alkylsulfonate is preferred. methyl, ethyl, propyl, butyl, and neat acrylates; and 2-ethylhexyl acrylate; 2-ethylhexyl methacrylate, lauryl acylate and lauryl metaerylate; carboxylic acids of Câ, â, € â, €, for example acetate, Câ, â, € â, € alkyl of Câ, -Câ, â, ... alkoxy and aromatic fumaric acids of styrene, as well as styrene-styrene and acrylonitrile, acrylonitrile, acrylonitrile, acrylonitrile, acrylonitrile, methacrylamide, as well as vinyl acetate with 5 ύ. Carbon atoms and vinyl halide, such as vinyl chloride and vinyl chloride; compounds such as butadiene and isobutane, such as mixtures of the above-mentioned monomers, can be copolymerized with one another. Exemplary monomers are acrylic acid ester, methacrylic acid ester ester, acrylonitrile, and methacrylate. The use of a copolymer of the anion-anion-anion to the molar acid, which is in the form of molybdenum and about 50 mol% of the anion, (C) and is used in the preparation of the compound (C). relative to the content of the active substance of the instant composition, in the range of 10 to ca. by weight, preferably from 50 to 70 percent, preferably in the range of from 0Â ° to 500Â °. (b) may be employed as standard surfactants, such as ethylene oxide and / or propylene oxide or alcohols, or the like. polyols, phenols, polyethylene oxide, polyethylene oxide / polyolefin oxide copolymer addition products, paraffin sulfonic acid salt thereof. The addition products of the present invention and / or propylene oxide are selected from alcohols or phenols. (b) and advantageously is applied in the compositions, relative to the solids content of the wipe composition,

preferably from 1 to 10, particularly preferably from 2 to 5 percent by weight, as the antifoam agents (I), the usual non-foaming agents are used. natural oils, such as mineral oils, mineral oils, phosphates, C8 -C12 alcohols and silicates. Other anti-foaming agents are described in US Pat. No. 4,214,144. Preferably they employ ethylhexanoic acid ethylhexyl esters. The component (E) is conveniently applied relative to the content of the active ingredient The compositions of the present invention comprise a cleaning composition in amounts of from 0.01 to 20 percent by weight, preferably from 0.1 to 10, especially preferably from 0.5 to 5 percent by weight.

For the preparation of the cleaning composition solution, components (A) to (E) may be dissolved or dispersed in water in any desired sequence order. The aqueous cleaning composition contains the sum of components (A) through (E ) at a concentration of from 10 to 50 percent by weight, preferably from 12 to 40%, particularly preferably in the range of from 14 to 30 percent by weight with such aqueous cleaning compositions, the machines which stop, can be cleaned without problems because the resins of the resins are finely dispersed. In a sedimentation vessel the resin is sedimented and can be separated and removed.

Examples

Cleaning solution 1:

In 84.4 g of water was dissolved 3 g of sodium hydroxide, 2 g of polyacrylic acid, 10 g of a copolymer of styrene and maleic anhydride, 50 mol% styrene and 50 mol% Maleic male; 7

0.5 g of octyl phenol ethoxylate; 0.1 g of tri-isobutyl phosphate.

Cleaning solution 2 l

In 80.4 g of water was dissolved 5 g of sodium hydroxide; 6 g of polyacrylic acid; 8 g of a copolymer of styrene and maleic acid (each in 30 mol%); 0.5 g of octyl phenol ethoxylate; 0.1 g of triisobutyl phosphate *

These solutions tried to clean surfaces that were dirty with residues of the following resins:

Resin 1:

Formaldehyde-urea resin with a molar ratio of urei. for formaldehyde from 1 to 1.25 and a solubility in water of 1 to 1.5 *

Resin 2i

Phenol-urea-melamine phenolic resin with a molar ratio of melamine, urea, phenol and formaldehyde of 1-1,34- 0,11-4,61 and a solubiliuaae in water of ± 0,6.

The results of the cleaning

Uhbela · Labela fxemolo-Cleaning composition-Resin resin-resin 1-resin 2; Kg of water application / g of resin

Go cold-insoluble-water-insulation-100 hot water-resíduct similar to latex-r-residue similar to latex-100

2-10% HaOH-withdrawable by washing, however it sediments or is immediately imbedded, clogs the pipes-difficult to re-drawable by washing, settles again immediately-5C

3 * - water + pril-insoluble, residue similar to soluble latex-in, residue similar to latex-100. 4 * -cleaning composition 1-removal ability by very good wash-out, resolving in a finely dispersed, well pumpable solution, do not clog the pipes, settle well, slowly, into the clarification well-10 * 5.-Composition cleaning 2-very good washability, resulting in a finely dispersed solution, well oombeable, do not clog the pipes, settle well, slowly, into the 8-well.

Claims (1)

9 a-e-I-V-I-K-B-I-C-A-Q---B-S Γ 'j. . Process for the preparation of an aqueous cleaning composition for glue processing machines based on amine resins, characterized in that a) an alkali metal hydroxide is mixed; Poly (meth) acrylic acid; C ·) a copolymer based on styrene and maleic anhydride and, if appropriate, other comonomers; 1 and an emulting agent and (2) an antifoaming agent according to claim 1, characterized in that in the aqueous cleaning composition (A) 1 to 0 weight percent of an alkali metal hydroxide -' at the; B) 1 to 30 percent of a poly (meth) acrylic acid | C) 10 to 80 percent by weight of a copolymer based on styrene and maleic anhydride and optionally other comonomers; D) 0.1 to 20 percent by weight of an emulsifying agent and J8) 0.01 to 20 percent by weight of an antifoaming agent, such that the amounts of components A), d), G), 3 And E.) total 100 percent and are relative to the active substance content of the aqueous cleansing composition according to claims 1 or 2, The composition according to any one of claims 1 to 5, characterized in that, in said composition, the copolymer of maleic anhydride-maleic anhydride as claimed in claim 1, (D), if ethoxylated alcohols or phenols are employed as emulsifying agents (D). Process according to any of claims 1 to 4, characterized in that triisobutyl phosphate is used in said aqueous cleaning composition. A process according to any one of claims 1 to 5, characterized in that the aqueous cleaning composition passes an amount of active substance, preferably from about 10 to 50% by weight, to the total amount (100% by weight) of the cleaning composition, and the substance content corresponds to the totality of components 1), B) and (D), and (D). Lisbon, January 17, 1990 0 Official Agent of Industrial Property -: - L 's commercials Sfiva Carvalho "fjsitle Office of the Intiultlal Propriety Your Castilho. 201-3. 651339 - 1000 USBOA