JPH07316534A - Water-soluble release agent composition - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention is to provide a composition capable of safe, efficient and reliable water treatment for removing paints, sealants, adhesives and the like, and to bring necessary viscosity to a small amount. However, the purpose is to be able to use it easily and conveniently regardless of location or technology. [Structure] Therefore, an amide-based organic solvent having a specific structure, a water-soluble surfactant, and an isoprene compound (terpenoid component) are essential. If necessary, thicken with an organic amine neutralized product of carboxyvinyl polymer. It has reached the following composition. [Effect] It is possible to treat solvents such as paints, plastic materials, adhesives, sealing agents, and vehicle products using a powerful release composition that produces reliable results speedily and is less irritating. It aims to expand the field from commercial to industrial.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-soluble release agent composition which is safe and has good efficiency for unnecessary adherends such as paints, sealing agents, adhesives, mineral oils and polymer compositions. . As for removing these adhered contaminants, it is economical at construction sites, coating sites, machine factories and other sites, from the advantage of workability, trichloroethane, perchlorethane, methylene chloride, chloroform, organic halogen compounds such as fluorocarbon solvents, etc. Aromatic solvents such as xylene, acetone, acetate, toluene. Furthermore, normal paraffin, isoparaffin, mineral terpene, mineral spirits, terpene-based extracts, etc. may be used, but these are used in recent years in environmental protection ideas, health maintenance, after-care convenience, improvement of recontamination prevention, etc. The existence of something that surpasses is desired. On the other hand, it is also true that the improvement of the substance (for processing) is inevitably required due to the strong demand for maintenance of social capital, maintenance of facility management, and efficiency of on-site work in the improvement of living infrastructure.

[Problems to be Solved by the Invention] The present invention solves the following conventional problems and provides a safe and reliable water-soluble release agent composition. (1) Organic halogenated substances are not suitable for environmental protection such as CFCs, trichloroethane, and methylene chloride, and there is concern about groundwater pollution, and secondary treatment is technically and economically disadvantageous. (2) Most of the combustible organic solvents are water-insoluble, and they are highly volatile and odorous.
Due to restrictions such as work safety prevention laws and regulations, workers are less efficient and health anxiety is inevitable. (3) Water-soluble organic solvents (alcohols, ethers, glycols, ketones, esters, etc.) can also be used, but a decline in performance is unavoidable and work quality cannot be improved. (4) The terpene-based extract substances that have been frequently used recently are not practical because they have a strong aromaticity and cannot be treated with water, which causes deterioration of the work environment and high cost. (5) Alkyl amide-based solvent alone can be used as a resin solubilizer, release agent (remover), sealing agent, diluent, cleaning aid, but it has a strong odor and is also a dangerous substance. It is also biodegradable in water. And, it is inferior in effectiveness to various complex pollution.

[Means for Solving the Problems] In the present invention, as a conventional method for solving these problems, a specific alkylamide organic solvent and a surfactant having an HLB of 7 or more are used in combination, and if necessary, an isoprene compound is used. The use of an organic solvent containing a specific substance (terpene-based) of 1) has succeeded in achieving safety, working environment, secondary treatment, and cost reduction. Originally, alkylamide organic solvents such as dimethylformamide, dimethylacetamide, and formamide are excellent resin dissolving agents (particularly urethane,
It is widely used as a processing aid for artificial leather), but it is highly volatile and has a unique amine odor that worsens the working environment. In addition, there is little solvent effect and dissatisfaction remains in the treated parts that contain oil, dust, etc. It was The treated part is a part for peeling off and removing those composed of a polymer binder (binder), a dye, a pigment and the like, and a lot of complex pollution is piled up. The present inventor is typically represented by an alkylamide organic solvent, that is, represented by the following structural formula. Among them, dimethylformamide, dimethylacetamide, methylacetamide, methylpropionamide, and formamide are typical. These organic solvents have a peculiar amine odor and cannot be said to be aromatic odors, and they may evaporate due to sustained release. However, if 2 to 5% of water is used in combination with a surfactant having HLB of 7 or higher, the odor becomes milder and the spontaneous volatility becomes less. Not only that, the performance (resin dissolving ability) is improved by 20 to 50% as compared with the performance alone. Further, if an organic solvent having a pyrrolidone ring is added, it has a milder odor, the resin dissolving power can be improved, and the volatility can be reduced. HLB
As the 7 or more surfactants, ionic negative alkylbenzene sulfonates, alpha olefin sulfonates, alkyl sulfonates, alkyl sulfates, alkyl ether sulfates, higher fatty acid salts, non-polyoxyethylene alkyls Ether, polyoxyethylene alkylphenol ether, polyoxyethylene fatty acid ether, polyoxyethylene sorbitan fatty acid ester, fatty acid alkanolamide, polyoxyethylene vegetable oil (castor oil, funnel oil, olive oil), glycerin fatty acid ester, ethylene glycol higher fatty acid ester,
Alkyl glycoside amphoteric examples include alkylamido betaine, alkyl imidazolinium betaine, alkyl acetate betaine, alkyl amine oxide, alkyl glycine-positive quaternary ammonium salt, quaternary pyridinium salt, and polyamidoamine. When these surfactants are used in combination with an alkylamide-based organic solvent, they form a thin film (uhair) and have a kind of masking effect to alleviate odor and volatility. Among them, polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, fatty acid alkanolamide ester, dialkyldimethylammonium chloride, monoalkyltritylammonium chloride, alkylkilbendine ammonium chloride, alkylamine oxide,
Nitrogen-containing (N) compounds such as alkylamidopropyl betaine are particularly good.

[Operation] The minimum proportion of these components is basically that the amount of the alkylamide-based organic solvent is 80% or more of the whole. If the amount is less than this, the resin dissolving effect is lowered, and there is a concern about amine odor and other safety problems. The surfactant is preferably about 3 to 10%.
If it is less than this, a difference in resin dissolving power occurs, and it is poor in suppressing the odor of the alkylamide, and if it is more than this, the permeability to the object to be treated is poor and the inclusion of the third component is prevented. The present invention has further revealed that if an isoprene compound having a (C ₅ H ₈ ) skeleton is contained as needed, it has a menthol with a soft aromatic character and a refreshing mint odor, and synergistic detergency. A typical one is l-limonene,
Examples thereof include terpineol, menthol, camphor, citral, citronellol, D-limonene, α-pinene, camphan, milmyrcene, P-menthane and the like. When this terpene compound is used in combination with an alkylamide-based organic solvent, it is also important that the amine odor is improved and the action on human hands and skin is alleviated. The mixing ratio is 100 ^W % of the former and 2 to 60 ^W % of the latter, especially 3 to 30%.
^W % is preferred. The composition of the present invention is a sealing agent, an adhesive, various resins (polymer film forming material) heavy mineral oil, tar, pitch composition, grease (pasty mineral oil), paint (lacquer, paint, vehicle), printing ink. , Electronics (eg magnetic bed wax, IC
It can be widely used as a cleaning agent for plates, LCD devices, etc. In particular, an important application for sealing, paint, tar pitch, and dissolution / removal of polymers (remover) is a work area of a wide area where water can be treated. Therefore, its significance is great. ★ Furthermore, the composition of the present invention can form a stable viscous condition only when it is necessary to impart viscosity, particularly when a carboxyvinyl polymer and an organic amine alkaline substance (particularly hydrophobic to water-separating type) are used together. . Typical examples of the carboxyvinyl polymer include acrylic acid, methacrylic acid, polyvinyl methyl ether-maleic anhydride, styrene-maleic anhydride, and the like. Among them, acrylic acid polymer is advantageous in terms of gelling strength, workability and safety. Gelation is obtained by neutralizing this with an organic amine alkaline substance. Organic amine alkaline substances are ethylenediamine, diethylenetriamine, triethylenetetramine, morpholine, methylmorpholine, cetylmorpholine, piperazine, monoethanolamine, diethanolamine, methyldiethanolamine, laurylamine, triethylamine, offtylamine, stearylamine, isopropylamine, methylamine, ethylamine. , Hydroxylamine, P-phenylenediamine, O-phenylenediamine and the like. The usage ratio is generally 0.2 to 2 ^W % . By properly controlling the neutralization position, the best viscosity can be stably exhibited. In addition to these basic components, the composition of the present invention is a water-soluble organic solvent, especially a pyrrolidone type (N-methyl-2-pyrrolidone, 2-pyrrolidone, etc.), DMI (1.3 dimethyl-2-imidazolidinone), tetrahydrofuran. , Alcohol, (isopropanol, methanol, butanol, phenoxyethanol, diacetone alcohol, benzyl alcohol, etc.) glycol ether, (butyl carbitol, butyl carbitol acetate) propylene glycol monobutyl ether, etc. it can. Further, it does not prevent that the water content of the composition of the present invention is approximately 10% at maximum. Because the addition of water can reduce the flammability, reduce the odor of the organic solvent, and smoothly neutralize (dilute) with water. On the other hand, in order to maintain the stability of the organic solvent, a polyhydric alcohol may be used in combination as a wetting agent (eg glycerin, ethylene glycol, hexylene glycol, 1.3 butylene glycol, sorbitol, xylitol, etc.).
To improve the oxidative stability of organic solvents, BHT, BHA,
Elsorbic acid, ascorbic acid, tocopherol, etc. may also be added. Next, representative examples of the present invention will be given and proved.

[Example-1] Detergency (peeling force) and odor of a prototype having the following composition were examined. (Table 1-) (!) Detergency (a) A commercially available oil paint (urethane-acryl modified) was applied twice to a stainless steel plate and left for one day. Peeling force compared with methylene chloride (MC) and a toluene / MEK / IPA blend product using this as a blank (when MC is 100) (b) The solubility in urethane-based sealing materials was examined (g
(/ 100 ml / 30 minutes) (when MC is set to 100) (C) The degree of peeling of the veneer plate coated with a 20 μ-thick film of the acrylic / styrene / butadiene (ABS) modified resin was examined by the area ratio . (10 minutes after application: 50 × 50c
m) (when MC is 100) (Table 1-) From the above, it was revealed that the product of the present invention has a detergency equivalent to that of the organic halogen compound. (2) Smell (n = 3: 5 monitors) Compared to target (blank) DMF and DMAC alone

[Example 2] The present invention product and the comparative product having the following compositions were made as trial products and some tests were tried. (Table-2)

(Footnote) ○ Surfactant- (a) Polyoxyethylene (EO:
9) Noniphenol ether ○ Surfactant- (n) polyoxyethylene (EO: 1
2) Sorbitan lauryl ether ○ Junron PW-110 (Nippon Pure Chemicals: acrylic acid polymer) ○ Viscosity: B-type viscometer (liquid temperature 20 ° C) ○ Water degradability: Status of liquid diluted 10 times with water (20 ° C) Cleaning power (d) A commercially available urethane sealing agent is fixedly inserted into a porcelain tile (15 × 15 cm) of a vertical object, each sample is applied once after 24 hours, and wiped off after 10 minutes. (E) P-tile (commercially available) adhesive (acrylic) was evenly applied (twice twice), and after 30 minutes, it was treated with a spatula to give a residual result (n = 3). From the above, it was clearly demonstrated that the compounded product of the present invention has good odor, performance, stability of viscosity, and practicality.

[Results of the Present Invention] The composition of the present invention has excellent aromaticity as compared with a composition using a simple organic solvent as a stripping agent, exerts a strong action in a small amount, and can be diluted with water. It is highly safe and stable. In addition, it improves the working environment by improving the irritation, which is a drawback of amide solvents, and mitigating the peculiar odor (suppressing vaporization).
It can be used speedily, safely and efficiently for the purpose of peeling and removing sealing agents, vehicle agents, various paint materials, adhesives, waxes, greases and the like. Therefore, based on this technique, the effects of safer amide-based organic solvents can be expanded, and at the same time, they can positively act at low cost efficiently and in environmental protection (working environment and natural environment).

Claims (3)

[Claims] 1. A water-soluble stripping agent composition comprising an amide-based substance represented by the following structural formula as an organic solvent, and a surfactant having a low HLB and a ratio of 7 or more. 2. An amide-based substance represented by the following structural formula as an organic solvent component, an isoprene compound having (C ₅ H ₈ ) n as a skeleton, and a surfactant having an HLB of 7 or more are used in combination. The water-soluble release agent composition as described in one item. 3. An amide-based substance represented by the following structural formula as an organic solvent component, an isoprene compound having (C ₅ H ₈ ) n as a skeleton, and a carboxyvinyl polymer as a thickening system for a surfactant having an HLB of 7 or more. The water-soluble release agent composition according to the first aspect, wherein the water-soluble release agent composition has a viscous property in combination with and