JPH07166076A - Synthetic resin coated flooring material - Google Patents

Abstract

(57) [Abstract] [Purpose] Since there is no risk of appearance defects such as color blurring and color unevenness due to the sedimentation of aggregates, and the construction work using a trowel etc. is easy, it is possible to apply the desired color to the floor. Have,
A synthetic resin coated flooring material capable of forming a coated flooring excellent in leveling property. [Structure] A coloring aggregate, a predetermined amount of a fine powder filler, and a predetermined amount of an anti-sagging agent were mixed with at least one of a main agent and a curing agent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin-coated flooring material, and more particularly to a synthetic resin-coated flooring material colored by dispersing an aggregate.

[0002]

2. Description of the Related Art Conventionally, a main agent containing a transparent or translucent curable resin and a curing agent for curing the curable resin are used, and the main agent has a desired color or is colored in a desired color. There is a two-component curing type synthetic resin-coated floor material in which the prepared aggregate is dispersed and colored.

In a coated floor formed by using this synthetic resin coated floor material, the color of the aggregate dispersed in the transparent or semitransparent resin can be observed from the outside, so that the floor as a whole has almost the same color as the aggregate. It is also called a patterned floor because it may have a beautiful speckled pattern on the surface of the floor depending on how the aggregate is dispersed.

[0004]

Since the aggregate used for the above-mentioned synthetic resin floor covering usually has a larger specific gravity than that of the curable resin, the aggregate is placed below the floor until the curable resin is cured. It may settle. If the aggregates settle down below the coating floor, especially when the curable resin is translucent, the aggregates cannot be seen sufficiently from the outside, resulting in poor appearance such as so-called blurred colors and uneven colors. However, there is a problem that a desired color cannot be obtained as a painted floor. It has been attempted to make the aggregate into a shape having a small apparent specific gravity, such as a scaly shape, to slow the sedimentation speed,
There is no difference that the specific gravity of the aggregate is larger than the curable resin,
Still, the problem of poor appearance such as blurring of the aggregate due to sedimentation and unevenness of color remains.

As another means for slowing the sedimentation rate of aggregates, a fine powder filler such as fine silica powder is added to the base material or hardener of the floor coating material in an amount of 5 to the total amount of the main agent and the hardener.
It has been devised to increase the viscosity by blending in a proportion of 20% by weight. This method slows down the sedimentation rate of the aggregate,
A great effect can be obtained in terms of preventing appearance defects such as color blurring and color unevenness, but the viscosity of the floor coating material becomes too high, making it difficult to perform work on a construction surface using a trowel, for example. Therefore, there is a problem that the leveling failure occurs on the finished coated floor.

The present invention has been made in view of the above circumstances, and there is no possibility of appearance defects such as color blurring and color unevenness due to sedimentation of aggregates, and the construction work using a trowel or the like is easy. Therefore, it has a desired color as a painted floor,
Moreover, it aims at providing the synthetic resin coating floor material which can form the coating floor excellent in leveling property.

[0007]

Means and Actions for Solving the Problems To solve the above problems, a synthetic resin-coated flooring material of the present invention comprises a base resin containing a curable resin and a curing agent for curing the curable resin. A two-component curing type synthetic resin coated flooring material,
(a) Aggregate for coloring, (b) 0.1 to 3.0 parts by weight of fine powder filler based on 100 parts by weight of curable resin, and
(c) 0.05 to 1.5 with respect to 100 parts by weight of the curable resin
It is characterized in that parts by weight of the anti-sagging agent having a high molecular weight polycarboxylic acid salt as a main component are respectively mixed with at least one of the main agent and the curing agent.

In the synthetic resin-coated flooring material of the present invention having the above-mentioned constitution, the sagging preventive agent having a high molecular weight polycarboxylate as a main component is cured in the synthetic resin-coated flooring material after mixing and before curing. It lowers the interfacial tension between the hydrophobic resin (hydrophobic) and the fine powder filler (hydrophilic) and adsorbs on the particle surface of the fine powder filler. Then, since the fine powder filler is appropriately aggregated to form a network structure by the fine powder filler, the synthetic resin coating floor material before curing is thixotropic (Tixotropy), that is, it exhibits a gel state in a static state and stress. When is added, the viscosity of the composition decreases and the composition exhibits fluidity. For this reason, the construction work when stress is applied by a trowel etc. becomes easy,
In the stationary state, sedimentation of aggregate is reliably prevented.

The present invention will be described below. The synthetic resin-coated flooring material of the present invention is a two-component curing type composed of a main agent containing a curable resin and a curing agent for curing the curable resin. As the curable resin contained in the main component, among various conventionally known curable resins such as epoxy resin and urethane resin, those which are liquid in the working environment can be used. Among them, the bisphenol A type liquid epoxy resin, which has particularly good workability, is most preferably used.

As the curing agent, any of various curing agents capable of curing the above curable resin can be used. For example, in the case of the above bisphenol A type liquid epoxy resin, modified polyamine is preferably used as the curing agent. To be done. Of the three components (a) to (c) to be mixed with the two-component curing type synthetic resin-coated flooring material consisting of the above-mentioned main agent and curing agent, the aggregate of (a) is the conventional synthetic resin coating. Any of various soft or hard aggregates used for flooring can be used, and in particular, aggregates having a shape with a small apparent specific gravity such as scales are preferable in order to prevent the sedimentation thereof more reliably. Used for. The aggregate may be colored in a desired color, or may have a desired color by itself.

The aggregate may be blended with either the main agent or the curing agent, but in order to form a coated floor having a uniform pattern, the aggregate is uniformly dispersed in the mixed coating floor. Therefore, it is preferable to preliminarily mix the aggregate into the base material having a higher viscosity. That is, when the aggregate is mixed in the curing agent, after the main agent and the curing agent are mixed, a solid aggregate is added to the highly viscous main agent at a construction site in a short time until the curing reaction is completed. Since they are mixed, it is not easy to uniformly disperse the aggregate in the floor covering after mixing. On the other hand, when the aggregate is mixed in the main agent, it is possible to disperse the aggregate in the main agent with sufficient equipment and time when manufacturing the main agent in a manufacturing plant, etc. It is easy to uniformly disperse the aggregate in the floor material.

However, the present invention does not exclude the constitution in which the aggregate is mixed in the curing agent. Further, an aggregate may be mixed in both the main agent and the curing agent. The blending amount of the aggregate is not particularly limited in the present invention, and an optimal amount of the aggregate can be blended according to the size of the aggregate, the desired state of the pattern of the coated floor, and the like. For example, as a fine powder filler of (b) among the general three components (a) to (c), a silica-based thickener (for example, trade name Leosyl QS10 manufactured by Tokuyama Soda Co., Ltd.) is used.
2. Product name Syloid 244 manufactured by Fuji Silysia Chemical Ltd.
Etc.), organic bentonites, asbestos powder, fibrous clay minerals and the like.

For the same reason as the above-mentioned aggregate, the fine powder filler is preferably blended with the main component of the two-component curing type synthetic resin coating floor material, but in some cases it may be blended with the curing agent. , May be blended with both the main agent and the curing agent. The blending amount of the fine powder filler is limited to 0.1 to 3.0 parts by weight with respect to 100 parts by weight of the curable resin in the base material.

If the amount of the fine powder filler is less than the above range, the effect of imparting thixotropy to the synthetic resin coating floor material after mixing and before curing becomes insufficient, and the viscosity of the coating floor material at rest is too low, The sedimentation of the aggregate cannot be reliably prevented. On the contrary, when the amount of the fine powder filler exceeds the above range, the viscosity decrease when stress is applied to the synthetic resin coating floor material before curing is small, and sufficient fluidity cannot be obtained. The workability of the construction work using such as will deteriorate.

In the above range, the amount of the fine powder filler is 1.5 to 100 parts by weight of the curable resin.
It is preferably 2.5 parts by weight. 3 of (a) to (c) above
Among the components (c), the anti-sagging agent containing a high molecular weight polycarboxylic acid salt as a main component is BYK Chemi
e) Product name "Anti-Terra-203", "Anti-Terra-20"
4 ”etc. are commercially available. These anti-sagging agents are supplied in a liquid form in which the high molecular weight polycarboxylic acid salt is dissolved in an organic solvent such as a high-boiling point aromatic compound or methoxypropanol.

The anti-sagging agent may be blended with either the main agent or the curing agent constituting the two-component curing type synthetic resin coating flooring material. And the difference in viscosity between the main agent and the curing agent becomes large, so it is not easy to uniformly mix the two at the construction site. Therefore, it is preferable to add the anti-sagging agent to the curing agent. However, the present invention does not exclude the constitution in which the anti-sagging agent is blended in the main ingredient. An anti-sagging agent may be added to both the main agent and the curing agent.

The blending amount of the anti-sagging agent is limited to 0.05 to 1.5 parts by weight with respect to 100 parts by weight of the curable resin in the base material. When the compounding amount of the anti-sagging agent is less than the above range, the effect of imparting thixotropy to the synthetic resin coating floor material before curing after mixing becomes insufficient, and the viscosity of the floor coating material at rest is too low, and Settling cannot be reliably prevented. On the other hand, when the amount of the anti-sagging agent exceeds the above range, the viscosity decrease when stress is applied to the synthetic resin coating floor material before curing is small, and sufficient fluidity cannot be obtained. The workability of the construction work using such as will deteriorate.

The content of the anti-sagging agent is 0.1-1.
It is preferably 0 part by weight. In the synthetic resin-coated flooring material of the present invention, for example, at least one of the main agent and the curing agent, in addition to the above-mentioned components, various fillers, pigments, reactive or non-reactive diluents, stabilizers, etc. The additive can be blended appropriately. In addition, a liquid thixotropic agent that is not affected by an anti-sagging agent, such as hydrogenated castor oil, polymerized vegetable oil, and amide wax, can be used in combination with the main agent. A curing catalyst such as a primary amine, a boron complex salt or an inorganic acid may be added.

[0019]

EXAMPLES The present invention will be described below based on Examples and Comparative Examples. Examples 1 to 3 and Comparative Example 2 A base resin and a curing agent were prepared as described below to obtain a two-component curing type synthetic resin coating floor material.

(Preparation of Main Agent) 100 parts by weight of bisphenol A type liquid epoxy resin (trade name Epicoat 828 manufactured by Yuka Shell Epoxy Co., Ltd.) as a curable resin, and 20 parts by weight of benzyl alcohol as a diluent, 60 parts by weight of the aggregate and a silica-based thickening agent (trade name: Leosir QS102 manufactured by Tokuyama Soda Co., Ltd.) in an amount shown in Table 1 below as a fine powder filler are mixed, stirred and mixed to prepare a main agent. did.

(Preparation of curing agent) 100 of modified polyamine
Anti-sagging agent (part name "Anti-Terra-20"
4 ") was mixed and stirred and mixed to prepare a curing agent. Comparative Example 1 A two-component curing type synthetic resin coating floor material was prepared in the same manner as in Examples 1 to 3 and Comparative Example 2 except that the silica-based thickener as a fine powder filler was not added to the base material. Obtained.

[0022]

[Table 1]

The following tests were carried out on the synthetic resin-coated floor coverings of the above Examples and Comparative Examples to evaluate their characteristics. Trowel Workability Evaluation Examples In which the amount of the modified polyamine in the curing agent was 50 parts by weight with respect to 100 parts by weight of the epoxy resin in the main agent, the amount of the modified polyamine was 50 parts by weight, respectively. After mixing so as to be uniform, the surface of the concrete as the construction surface was leveled with a trowel. And the workability of the iron at that time is ○ (= good workability), × (= difficult to level)
It was evaluated in two stages.

Appearance evaluation of coated floor In the above-mentioned trowel workability evaluation, the coated floor leveled on the concrete surface was visually observed for appearance after curing and curing at room temperature for one day and night, and the surface condition was observed. Then, the dispersed state of the aggregate and the presence or absence of color blur, color unevenness, etc. were confirmed. The results are shown in Table 2.

[0025]

[Table 2]

As is clear from the results shown in Table 2, in Comparative Example 1 in which the silica-based thickener as a fine powder filler was not mixed in the main component, the cured coating floor was observed.
Blurring and uneven coloring due to sedimentation of aggregate were observed. Further, a silica-based thickener as a fine powder filler is added to the curable resin 10
In Comparative Example 2 in which the amount was more than 3.0 parts by weight with respect to 0 parts by weight, the workability of the trowel was poor and the leveling was difficult. When the coated floor after curing was observed, no blurring or color unevenness due to sedimentation of aggregate was observed, but unevenness of trowel marks was observed on the surface.

On the other hand, in each of Examples 1 to 3, the workability of the trowel is good and the leveling is easy, and even when the coated floor after curing is observed, color blurring and color unevenness due to sedimentation of the aggregate are observed. No unevenness of trowel marks was observed, and the product had a desired color and was excellent in leveling. Examples 4, 5 and Comparative Example 4 A base resin and a curing agent were prepared as described below to obtain a two-component curing type synthetic resin coated flooring material.

(Preparation of Main Agent) 100 parts by weight of a bisphenol A type liquid epoxy resin (trade name Epicoat 828 manufactured by Yuka Shell Epoxy Co., Ltd.) as a curable resin, and 20 parts by weight of benzyl alcohol as a diluent, 1. 60 parts by weight of aggregate and 1 part of a silica-based thickening agent (trade name: Leosyl QS102 manufactured by Tokuyama Soda Co., Ltd.) as a fine powder filler.
0 parts by weight was blended, stirred and mixed to prepare a main agent.

(Preparation of curing agent) 100 of modified polyamine
The amount of the anti-sagging agent (the above-mentioned trade name "Anti-Terra-204") shown in Table 3 below was mixed with parts by weight, and the mixture was stirred and mixed to prepare a curing agent. Comparative Example 3 A two-component curing type synthetic resin coating floor material was obtained in the same manner as in Examples 4 and 5 and Comparative Example 4 except that the curing agent was not mixed with the anti-dripping agent.

Comparative Example 4 Examples 4 and 5 and Comparative Examples 4 and 5, except that the anti-dripping agent was not mixed in the curing agent and the amount of the silica-based thickening agent in the main component was 4.0 parts by weight. A two-component curing type synthetic resin coating floor material was obtained in the same manner as in 4.

[0031]

[Table 3]

The numbers in parentheses in Table 3 are the amounts of the anti-dripping agent actually blended with 100 parts by weight of the modified polyamine, and the numbers in parentheses are the main agent and the curing agent, and the epoxy in the main agent. It is the compounding amount of the anti-sagging agent with respect to 100 parts by weight of the epoxy resin when mixed so that the amount of the modified polyamine in the curing agent is 50 parts by weight with respect to 100 parts by weight of the resin.

The above-mentioned tests were conducted on the synthetic resin-coated flooring materials of the above-mentioned respective examples and comparative examples, and their characteristics were evaluated. The results are shown in Table 4.

[0034]

[Table 4]

As is clear from the results in Table 4 above, in Comparative Example 3 in which the anti-sagging agent was not mixed in the curing agent, when the coated floor after curing was observed, color blurring and color due to sedimentation of aggregates were observed. Unevenness was seen. Further, the anti-dripping agent is added to the curable resin 10
Comparative Example 4 blended in an amount of more than 1.5 parts by weight with respect to 0 parts by weight, and the anti-sagging agent was not blended in the curing agent, but instead a silica-based thickener was added to 100 parts by weight of the curable resin. On the other hand, Comparative Example 5 in which more than 3.0 parts by weight was compounded in the main agent
All had poor workability on the trowel and were difficult to level. When the coated floor after curing was observed, no blurring or color unevenness due to sedimentation of aggregate was observed, but unevenness of trowel marks was observed on the surface.

On the other hand, in each of Examples 4 and 5, the trowel workability was good and the leveling was easy, and even when the coated floor after curing was observed, color blurring and uneven coloration due to the sedimentation of aggregates were observed. No unevenness of trowel marks was observed, and the product had a desired color and was excellent in leveling.

[0037]

As described above in detail, the synthetic resin-coated flooring material of the present invention is an aggregate for coloring, a predetermined amount of fine powder filler,
Also, since a predetermined amount of the anti-sagging agent is mixed with at least one of the main agent and the curing agent, there is no risk of appearance defects such as color blur and color unevenness due to sedimentation of aggregate, and trowel etc. Since the construction work is easy, it is possible to form a coating floor having a desired color as the coating floor and having excellent leveling properties.

Claims (2)

[Claims] 1. A two-component curing type synthetic resin-coated flooring material comprising a base material containing a curable resin and a curing agent for curing the curable resin, comprising: (a) an aggregate for coloring; b) 0.1 to 3.0 parts by weight of fine powder filler with respect to 100 parts by weight of the curable resin, and (c) 0.05 to 1.5 parts by weight of 100 parts by weight of the curable resin, A synthetic resin-coated flooring material, characterized in that an anti-sagging agent containing a high-molecular-weight polycarboxylic acid salt as a main component is mixed with at least one of a main agent and a curing agent. 2. The synthetic resin coating according to claim 1, wherein the aggregate and the fine powder filler are mixed in the main agent, and the sagging preventive agent containing a high molecular weight polycarboxylic acid salt as a main component is mixed in the curing agent. Floor material.