KR101854424B1 - Polyurea waterproof agent improving crack resistant and manufacturing method thereof and waterproof method using thereof - Google Patents
Polyurea waterproof agent improving crack resistant and manufacturing method thereof and waterproof method using thereof Download PDFInfo
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- KR101854424B1 KR101854424B1 KR1020170177165A KR20170177165A KR101854424B1 KR 101854424 B1 KR101854424 B1 KR 101854424B1 KR 1020170177165 A KR1020170177165 A KR 1020170177165A KR 20170177165 A KR20170177165 A KR 20170177165A KR 101854424 B1 KR101854424 B1 KR 101854424B1
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/02—Polyureas
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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Abstract
According to the invention, 70 to 80 parts by weight of butanone acid, 60 to 70 parts by weight of 2-chlorobutanolic acid, 100 to 100 parts by weight of a mixture of isocyanurate and 2-bromobutane in a volume ratio of 1: 50 to 60 parts by weight of 1,1-dichloroethane, 40 to 50 parts by weight of 1-chloro-2-methylpropane and 30 to 40 parts by weight of 3,3-dimethyl-diphenylmethane-4,4-diisocyanate A main agent having a weight average molecular weight of 10,000 to 15,000; 80 to 90 parts by weight of 2-bromo-4-nitrotoluene, 70 to 80 parts by weight of phenylmagnesium bromide, 60 to 70 parts by weight of N, N, N, N-tetramethylbutane diamine, A hardening agent in which 50 to 60 parts by weight of diphenylmethanol, 40 to 50 parts by weight of methyldiethylamine, 30 to 40 parts by weight of nitromethane, and 20 to 30 parts by weight of 2-methylpyridine is mixed, Is provided.
Description
The present invention relates to a waterproofing agent for polyurea film, a method for producing the same, and a waterproofing method using the waterproofing agent. More particularly, the present invention relates to a waterproofing agent for polyurea film, - Introduction of dichloroethane, 1-chloro-2-methylpropane and 3,3-dimethyl-diphenylmethane-4,4-diisocyanate into the polymer molecule to improve the crack resistance of the final polyurea, And a waterproofing method using the polyurea coating film waterproofing agent.
In order to prevent corrosion or damage caused by moisture of concrete structure, it is required to waterproof or treat the surface of concrete structure. Such waterproofing treatment is generally performed by applying a waterproof resin to the surface of a concrete structure.
A conventional waterproofing method for a concrete structure surface includes a pretreatment step of removing contaminants on the surface of a waterproofing structure and planarizing the surface of the waterproofing structure as disclosed in Japanese Patent Application No. 10-1215403 and the like, And applying polyurea on the primer layer.
These molecules of polyurea usually consist of an element that increases the flexibility and an element that increases the hardness evenly.
It is generally known that a material having a high flexibility is a material having a low glass transition temperature. The polyether, polyester and polyalkyldiol have a high flexibility when the weight average molecular weight is between 400 and 5,000, and a high Tg And when the semi-crystalline aromatic diisocyanate is bonded to a chain extension of low molecular weight, the hardness becomes large.
Generally, polyureas are synthesized with diamines having chain extensions and low molecular weight to form urea units. Therefore, the polyurea exhibits a wide variety of properties depending on various factors such as the selected substance, the molecular weight, or the reacted ratio. That is, it is possible to change from a substance whose property is fragile to a substance which is hard or soft, and which is of a certain viscosity. Particularly, in the case of polyurea, since the amide ester bond of fatty acid has a mixed bond, the property at high temperature has an intermediate property between these polyester and polyamide.
The synthesis of polyurea can be divided into two large regions, an addition reaction and a condensation reaction. The addition reaction occurs when the unsaturated monomer reacts in the reaction initiation step, the development step, and the termination step. Usually, monomers are simple molecules with a double bond, which reacts rapidly in the initiation step, breaking one of the two double bonds, until the unreacted monomer is almost lean.
In most cases, the addition reaction proceeds without making the byproduct. Condensation or staged growth reactions occur when monomers react with molecules with double functional groups at the stage where they were made to form chains of macromolecules. This is similar to the condensation reaction between molecules with small molecular weights. At this time, small molecules such as water and carbon dioxide are removed.
Addition reaction can be classified into homogeneous polymer or copolymer. The fine form of copolymer can be divided into random, cross, and lump form, but it differs depending on reaction conditions, concentration, reactivity ratio of monomers. Furthermore, controlling the molecular weight or the distribution of molecular weight after the reaction of the final reaction product polymer is more difficult than the condensation reaction which is controlled by using a reagent which changes the chain form. Control of the reactivity can be controlled by anionic polymerisation and in some cases it is possible to synthesize a nearly single-chain distribution. The condensation reaction is also used to make copolymeric polymer materials. The monomers having a double functional group are used to form a chain polymer, and those having three or more functional groups may constitute a crosslinked polymer network in a three-dimensional space.
Polyurea is a polymer material having an elastomeric property formed by the reaction of a polyoxyether polyamine mixture having a functional group with an isocyanate prepolymer. Because of the rapid reactivity of amines and isocyanates, polyurea can not be used in general at room temperature. Proceed with the operation. Since polyurea has an elastomeric property such as synthetic rubber, cracks are generated due to a change in chemical structure due to ozone in the air after the concrete structure is applied.
Accordingly, an object of the present invention is to provide a process for the preparation of a compound of formula (I), which comprises reacting isocyanurate, 2-bromobutane, butanobicyclic acid, 2- A polyurea coating waterproofing agent which improves crack resistance of the final polyurea by introducing diphenylmethane-4,4-diisocyanate into the polymer molecule so as not to cause deterioration of physical properties, And a waterproof method using the same.
The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.
According to the present invention, in 100 parts by weight of a mixture of isocyanurate and 2-bromobutane in a volume ratio of 1: 1, 70 to 80 parts by weight of butanobic acid, 60 to 80 parts by weight of 2-chlorobutanolic acid, 50 to 60 parts by weight of 1,1-dichloroethane, 40 to 50 parts by weight of 1-chlor-2-methylpropane and 30 to 40 parts by weight of 3,3-dimethyl-diphenylmethane-4,4-diisocyanate A main agent having a weight-average molecular weight of 10,000 to 15,000 by dropwise addition; 80 to 90 parts by weight of 2-bromo-4-nitrotoluene, 70 to 80 parts by weight of phenylmagnesium bromide, 60 to 70 parts by weight of N, N, N, N-tetramethylbutane diamine, A hardening agent in which 50 to 60 parts by weight of diphenylmethanol, 40 to 50 parts by weight of methyldiethylamine, 30 to 40 parts by weight of nitromethane, and 20 to 30 parts by weight of 2-methylpyridine is mixed, Is provided.
According to the present invention, 100 parts by weight of a mixture of isocyanurate and 2-bromobutane in a volume ratio of 1: 1 is mixed with 70 to 80 parts by weight of butanone acid, 60 to 70 parts by weight of chlorobutanolic acid, 50 to 60 parts by weight of 1,1-dichloroethane, 40 to 50 parts by weight of 1-chlor-2-methylpropane and 3,3-dimethyl- 30 to 40 parts by weight of diisocyanate is dropped for 15 to 17 hours to prepare a main agent having a weight average molecular weight of 10,000 to 15,000; 80 to 90 parts by weight of 2-bromo-4-nitrotoluene, 70 to 80 parts by weight of phenylmagnesium bromide, 60 to 70 parts by weight of N, N, N, N-tetramethylbutane diamine, 50 to 60 parts by weight of diphenylmethanol, 40 to 50 parts by weight of methyldiethylamine, 30 to 40 parts by weight of nitromethane and 20 to 30 parts by weight of 2-methylpyridine at room temperature to prepare a hardening agent, ; And mixing the subject and the curing agent in a volume ratio of 5: 1.
Thus, according to the present invention, there is provided a process for the preparation of a compound of formula (I) wherein isocyanurate, 2-bromobutane, butanoy resin, 2-chlorobutanolic acid, -Diphenylmethane-4,4-diisocyanate is introduced into the polymer molecule to improve the crack resistance of the finished polyurea, thereby preventing the deterioration of physical properties, and it is possible to perform work by using spray equipment, You can have sex.
On the other hand, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.
Hereinafter, preferred embodiments of the present invention will be described in detail.
The polyurea coating waterproofing agent having improved resistance to cracking according to a preferred embodiment of the present invention is basically composed of a mixture of isocyanurate and 2-bromobutane in a mixture of butanetoic acid, 2-chlorobutanolic acid, 1-dichloroethane, 1-chloro-2-methylpropane and 3,3-dimethyl-diphenylmethane-4,4-diisocyanate are dropwise added to maintain a constant weight average molecular weight, (N, N, N, N-tetramethylbutanediamine, diphenylmethanol, methyl (meth) acrylate, ethyl A hardening agent prepared by mixing diethylamine, nitromethane and 2-methylpyridine is mixed in a predetermined volume ratio.
Specifically, the polyurea coating waterproofing agent with improved crack resistance of the present invention is prepared by mixing 70 to 80 parts by weight of butanone acide in 100 parts by weight of a mixture of isocyanurate and 2-bromobutane in a volume ratio of 1: 1 , 60 to 70 parts by weight of 2-chlorobutanolic acid, 50 to 60 parts by weight of 1,1-dichloroethane, 40 to 50 parts by weight of 1-chlor-2-methylpropane and 3,3- 30 to 40 parts by weight of 4,4-diisocyanate is added dropwise to form a main agent for improving crack resistance through a weight average molecular weight of 10,000 to 15,000. Ethyl isopropyl ether 100 80 to 90 parts by weight of 2-bromo-4-nitrotoluene, 70 to 80 parts by weight of phenylmagnesium bromide, 60 to 70 parts by weight of N, N, N, N-tetramethylbutane diamine, 40 to 50 parts by weight of methyldiethylamine, 30 to 40 parts by weight of nitromethane and 20 to 30 parts by weight of 2-methylpyridine were mixed to prepare a hardener ing agents are prepared and then mixed with the above-mentioned subject and curing agent in a volume ratio of 5: 1.
Here, the weight parts of the subject mixtures are based on 100 parts by weight of a mixture of isocyanurate and 2-bromobutane in a volume ratio of 1: 1, and the weight parts of the curing agent mixtures are based on 100 parts by weight of ethyl isopropyl ether .
Meanwhile, a method for manufacturing a polyurea coating water repellent agent having improved crack resistance, according to a preferred embodiment of the present invention, comprises mixing 100 parts by weight of a mixture of isocyanurate and 2-bromobutane in a volume ratio of 1: 70 to 80 parts by weight of butanobic acid, 60 to 70 parts by weight of 2-chlorobutanolic acid, 50 to 60 parts by weight of 1,1-dichloroethane, 40 to 50 parts by weight of 1-chloro- And 30 to 40 parts by weight of 3,3-dimethyl-diphenylmethane-4,4-diisocyanate are added dropwise for 15 to 17 hours to have a weight average molecular weight of 10,000 to 15,000, 80 to 90 parts by weight of 2-bromo-4-nitrotoluene, 70 to 80 parts by weight of phenylmagnesium bromide, N, N, N-dimethylformamide, 60 to 70 parts by weight of N, N-tetramethylbutane diamine, 50 to 60 parts by weight of diphenylmethanol, 40 to 50 parts by weight of methyldiethylamine, And the step 30 to 40 parts by weight of 2-methyl-pyridine 20-30 parts by weight produced is mixed at room temperature hardener (hardening agent), wherein the base resin, the curing agent 5: a step to be mixed at a volume ratio of 1: 1.
Here, the weight parts of the subject mixtures are based on 100 parts by weight of a mixture of isocyanurate and 2-bromobutane in a volume ratio of 1: 1, and the weight parts of the curing agent mixtures are based on 100 parts by weight of ethyl isopropyl ether .
The isocyanurate and 2-bromobutane provide a function of adsorbing and adhering, and can speed up the reaction speed of the subject and the curing agent compositions to convert the compositions into a prepolymer in a short time and to terminate the reaction do.
Here, the isocyanurate and 2-bromobutane are mixed at a volume ratio of 1: 1. When the volume ratio is out of the range, the adhesive strength is lowered or increased to lower the workability. Therefore, It is desirable that the volume ratio of the range be maintained.
The VUTTA NOISE SEED is a substance which determines the reaction time with the above compositions and provides an adsorption function. The mixture is prepared by mixing 100 parts by weight of a mixture of isocyanurate and 2-bromobutane in a volume ratio of 1: 1 If the weight ratio is more than 70 parts by weight, the reaction speed of the compositions becomes too fast, and the degree of agglomeration and workability is lowered. When the weight part is less than the weight part, And the working time is increased. Therefore, it is preferable that the above-mentioned limited range of weight is maintained.
The 2-chlorobutanoic acid seed is a substance which reacts with the above-mentioned compositions to form a coating layer, wherein 100 parts by weight of the mixture of isocyanurate and 2-bromobutane in a volume ratio of 1: 1 If the amount is more than 70 parts by weight, the viscosity will become too large to decrease the workability. If the weight part is less than 50 parts by weight, the bonding strength will be lowered. Therefore, .
The 1,1-dichloroethane is a substance which determines the adhesive strength of a coating film, and the content of isocyanurate is 50 to 60 wt% based on 100 parts by weight of the mixture of isocyanurate and 2-bromobutane in a volume ratio of 1: If the weight of the coating layer exceeds the above-mentioned range, the viscosity of the composite increases to make the stirring operation inconvenient. If the weight of the composite is less than the above-mentioned weight, the storage stability of the composite is poor, , It is preferable that the above-mentioned limited range of weight is maintained.
The 1-chloro-2-methylpropane is a material which reacts with the above-mentioned compositions to provide a coating function, wherein 100 parts by weight of a mixture of isocyanurate and 2-bromobutane in a volume ratio of 1: When the weight of the coating layer is more than 40 parts by weight, the coatability of the coating layer becomes too large, and the workability of the coating layer becomes poor. When the weight of the coating layer is less than that, Therefore, it is preferable that the above-mentioned limited range of weight is maintained.
The 3,3-dimethyl-diphenylmethane-4,4-diisocyanate is a material which improves the stirring efficiency by allowing diffusion of the compositions and bubbles to be removed, wherein the isocyanurate and 2- : 1 is mixed in an amount of 30 to 40 parts by weight based on 100 parts by weight of the mixed material. If the weight part is out of the range, the physical properties such as the overall viscosity and the mixing ratio of the coating waterproofing agent deteriorate, It is desirable to have significance.
On the other hand, in the above-mentioned subject, the above-mentioned mixture of isocyanurate and 2-bromobutane in a volume ratio of 1: 1 was mixed with the above butanetoic acid, 2-chlorobutanolic acid, 1,1-dichloroethane, 1- Dichloro-2-methylpropane and 3,3-dimethyl-diphenylmethane-4,4-diisocyanate are dropped at a temperature of 130 to 150 ° C for 15 to 17 hours.
The reason why the temperature at which the compositions are dropped into the composite is limited to 130 to 150 ° C is that when the dropping temperature, that is, the stirring temperature, is lower than the above temperature, the swelling rate is lowered, and when the stirring temperature is higher than the above temperature, So that it is preferable that the above-mentioned limited range of stirring temperature is maintained.
The time for dropping the composition into the composite is limited to 15 to 17 hours because if the dropping time, that is, the stirring time is shorter than the above-mentioned time, swelling is poor and the stirring time is longer than the above-mentioned time, , It is preferable that the stirring time of the above limited range is maintained.
On the other hand, in the above-mentioned subject, the above-mentioned mixture of isocyanurate and 2-bromobutane in a volume ratio of 1: 1 was mixed with the above butanetoic acid, 2-chlorobutanolic acid, 1,1-dichloroethane, 1- Dichloro-2-methylpropane, and 3,3-dimethyl-diphenylmethane-4,4-diisocyanate are dripped, the weight average molecular weight is 10,000 to 15,000.
If the weight average molecular weight of the subject is limited to 10,000 to 15,000, if the amount exceeds the above range, the injection efficiency of the subject during spraying for coating is lowered and the workability is lowered. If the weight average molecular weight is less than the above range There is a problem that the overall bonding force of the coating layer is lowered and the lifting and cracking are easily generated. Therefore, it is preferable to have the weight average molecular weight in the above limited range.
The ethylisopropyl ether is a two-component crosslinking type synthetic resin paint which provides water resistance by preventing the layer separation phenomenon at the time of adhesion enhancement and storage during waterproofing of the film.
The 2-bromo-4-nitrotoluene is a colorless transparent material that does not dissolve in water and has low volatility, thereby providing a function as a release agent for improving stirring efficiency. When less than the above weight part is added, the polymer, which is a main component of the curing agent, reacts with the composition of phenylmagnesium bromide and pigment properties during storage before being mixed with the subject, , There is a problem that the stirring efficiency is lowered. Therefore, it is preferable to have the above limited weight portion.
The phenylmagnesium bromide is added to 70 parts by weight to 80 parts by weight of the ethyl isopropyl ether to increase the compressive strength of the coating layer. When the amount is less than 10 parts by weight, the water repellency is lowered, If it is added in a larger amount, there is a problem that the adhesive strength is lowered. Therefore, it is preferable to have the above limited weight portion.
The N, N, N, N, N, N, N, N, N, N-tetramethylbutane diamine is added to the ethyl isopropyl ether in an amount of 60 to 70 parts by weight based on 100 parts by weight of the ethyl isopropyl ether. When the weight of the polymer is more than the weight of the polymer, the bonding strength of the polymer increases and the compatibility with the polymer is deteriorated.
The diphenylmethanol is a substance which is excellent in heat exchangeability through moisturizing, waterproofing and thermal conductivity functions, and is added in an amount of 50 to 60 parts by weight based on 100 parts by weight of the ethylisopropyl ether. If less than the above- Moisture, moisture permeability and thermal conductivity are lowered, and if it is added in an amount greater than the above-mentioned weight part, lifting phenomenon occurs and moisture permeability is lowered, so that it is preferable to have the above-mentioned limited weight part.
The methyldiethylamine is a substance relating to a pigment that provides a hue of a coating layer, and is added in an amount of 40 to 50 parts by weight based on 100 parts by weight of the ethylisopropyl ether. When less than the above-mentioned weight portion is added, Or semitransparent. As a result, the appearance of the concrete surface is deteriorated. When the weight of the concrete is more than the weight of the concrete, the viscosity is lowered and the physical properties are rather lowered.
The nitromethane is added in an amount of 30 to 40 parts by weight based on 100 parts by weight of the ethyl isopropyl ether. When the amount of the nitromethane exceeds the above range, the coating degree of the coating layer becomes too large, If the weight of the coating layer is less than the above-mentioned range, the coating degree of the coating layer becomes too small.
The 2-methylpyridine is a substance for lowering the oxidation reaction rate of the coating film layer and improving the heat exchange property, and is added in an amount of 20 to 30 parts by weight based on 100 parts by weight of the ethylisopropyl ether. A shocking phenomenon is generated in the reaction with other compositions, and when the amount is less than the above-mentioned weight part, the oxidation reaction rate is accelerated and the antioxidant effect and heat exchange ability are lowered. Therefore, Do.
Meanwhile, when the volume ratio of the subject and the curing agent is out of the above range, it is difficult to control the curing time and the weight average molecular weight, so that the curing failure, And deterioration of physical properties, and there is a problem that workability is deteriorated. Therefore, it is preferable to mix at a limited volume ratio as described above.
Hereinafter, the effect of the polyurea coating film waterproofing composition according to the preferred embodiment of the present invention will be described with reference to specific examples.
To 100 parts by weight of a mixture of isocyanurate and 2-bromobutane in a volume ratio of 1: 1, 70 parts by weight of butanone acid, 60 parts by weight of 2-chlorobutanolic acid, 1,1 50 parts by weight of dichloroethane, 40 parts by weight of 1-chlor-2-methylpropane and 30 parts by weight of 3,3-dimethyl-diphenylmethane-4,4-diisocyanate were added dropwise for 15 hours to give a weight average molecular weight 100 parts by weight of ethyl isopropyl ether was added to 80 parts by weight of 2-bromo-4-nitrotoluene, 70 parts by weight of phenylmagnesium bromide, N, N, N, N-tetramethylbutanediamine 60 , 50 parts by weight of diphenylmethanol, 40 parts by weight of methyldiethylamine, 30 parts by weight of nitromethane and 20 parts by weight of 2-methylpyridine were mixed at room temperature to prepare a hardening agent, At a volume ratio of 5: 1 to prepare a polyurea coating waterproofing agent.
To 100 parts by weight of a mixture of isocyanurate and 2-bromobutane in a volume ratio of 1: 1, 75 parts by weight of butanone acetate, 65 parts by weight of 2-chlorobutanolic acid, 1,1,1 55 parts by weight of dichloroethane, 45 parts by weight of 1-chlor-2-methylpropane and 35 parts by weight of 3,3-dimethyl-diphenylmethane-4,4-diisocyanate were added dropwise for 16 hours to obtain a weight average molecular weight 13,000 was prepared. To 100 parts by weight of ethyl isopropyl ether, 85 parts by weight of 2-bromo-4-nitrotoluene, 75 parts by weight of phenylmagnesium bromide, N, N, N, N-tetramethylbutanediamine 65 , 55 parts by weight of diphenylmethanol, 45 parts by weight of methyldiethylamine, 35 parts by weight of nitromethane and 25 parts by weight of 2-methylpyridine were mixed at room temperature to prepare a hardening agent, At a volume ratio of 5: 1 to prepare a polyurea coating waterproofing agent.
To 100 parts by weight of a mixture of isocyanurate and 2-bromobutane in a volume ratio of 1: 1, 80 parts by weight of butanone acid, 70 parts by weight of 2-chlorobutanolic acid, 60 parts by weight of dichloroethane, 50 parts by weight of 1-chlor-2-methylpropane and 40 parts by weight of 3,3-dimethyl-diphenylmethane-4,4-diisocyanate were dropped for 17 hours to obtain a weight average molecular weight 90 parts by weight of 2-bromo-4-nitrotoluene, 80 parts by weight of phenylmagnesium bromide, 80 parts by weight of N, N, N, N-tetramethylbutanediamine 70 60 parts by weight of diphenylmethanol, 50 parts by weight of methyldiethylamine, 40 parts by weight of nitromethane and 30 parts by weight of 2-methylpyridine were mixed at room temperature to prepare a hardening agent, At a volume ratio of 5: 1 to prepare a polyurea coating waterproofing agent.
On the other hand, in order to evaluate the performance of the polyurea coating waterproofing agent having improved resistance to cracking in each of the examples described above, a test piece was prepared as described above according to KSF 4922, and the properties were compared with those of the prototype A and prototype B , And the results are shown in Table 1 below.
Therefore, as shown in Table 1, the polyurea coating waterproofing agent improved in crack resistance according to a preferred embodiment of the present invention is imparted with strength and toughness in a molecular structure and can be used for various purposes such as waterproofing, , And when the base and the hardener are applied by spray equipment, the crack resistance is better than that of the existing coating film waterproofing agent, so that the physical property does not deteriorate.
The waterproofing method using the polyurea coating waterproofing agent with improved crack resistance according to a preferred embodiment of the present invention is as follows.
First, the surface of the concrete for the construction of the polyurea coating waterproofing agent to be formed as described above is cleaned and treated by the operator. Here, the cleaning of the concrete surface includes removing dust, contaminants, or oil adhering to the concrete surface and smoothly treating protrusions on the surface to be applied.
Thereafter, polyurea coating waterproofing agents corresponding to Examples 1 to 3 are prepared.
Thereafter, the polyurea coating film waterproofing agent is applied to the surface-treated surface by a coating means to a predetermined thickness, and then dried to complete coating.
While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. It will be understood that the invention may be embodied otherwise. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.
Claims (4)
80 to 90 parts by weight of 2-bromo-4-nitrotoluene, 70 to 80 parts by weight of phenylmagnesium bromide, 60 to 70 parts by weight of N, N, N, N-tetramethylbutane diamine, A hardening agent in which 50 to 60 parts by weight of diphenylmethanol, 40 to 50 parts by weight of methyldiethylamine, 30 to 40 parts by weight of nitromethane and 20 to 30 parts by weight of 2-methylpyridine is mixed. Polyurea coating waterproofing agent.
Wherein the subject and the curing agent are mixed in a volume ratio of 5: 1.
80 to 90 parts by weight of 2-bromo-4-nitrotoluene, 70 to 80 parts by weight of phenylmagnesium bromide, 60 to 70 parts by weight of N, N, N, N-tetramethylbutane diamine, 50 to 60 parts by weight of diphenylmethanol, 40 to 50 parts by weight of methyldiethylamine, 30 to 40 parts by weight of nitromethane and 20 to 30 parts by weight of 2-methylpyridine at room temperature to prepare a hardening agent, ;
And mixing the subject and the curing agent in a volume ratio of 5: 1.
The polyurea coating film waterproofing agent is produced according to the third aspect of the present invention;
And applying a polyurea coating film waterproofing agent to the application surface by a coating means to a predetermined thickness.
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Cited By (4)
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| KR101948266B1 (en) | 2018-11-22 | 2019-02-14 | 주식회사 유일건설 | Pattern painting composition for interior and manufacturing method thereof |
| KR101991240B1 (en) | 2019-01-29 | 2019-06-20 | 최형철 | Improved waterproof method by eco-friendly polyurea paint film |
| KR102250894B1 (en) * | 2020-07-31 | 2021-05-11 | 장기영 | Surface perparation and manufacturing method thereof and complex waterproof method using thereof |
| KR102626293B1 (en) | 2023-08-11 | 2024-01-18 | 주식회사 에이피텍 | Polyurea resin agent and waterproofing and sealing method using thereof |
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