JPS60217278A - Adhesive composition for ceramic tile - Google Patents

Abstract

PURPOSE:To obtain the titled water-based composition applicable especially to porcelain tile as well as ceramic tile, by mixing a water-based emulsion, a tackifying resin, a nonionic surfactant, a filler and a water-soluble solvent or plasticizer at specific ratios. CONSTITUTION:The objective composition can be produced by mixing (A) 100pts. (wt.) of a water-based emulsion (solid basis) with (B) 10-200pts. of a liquid resin prepared by dissolving a tackifying resin (e.g. petroleum resin) in a solvent and/ or plasticizer (e.g. dioctyl phthalate) optionally in the presence of an oil, (C) a nonionic surfactant to emulsify said liquid resin, (D) 100-500pts. of a filler and (E) 5-60pts. of a water-soluble solvent and/or plasticizer, if necessary together with a thickener. EFFECT:Excellent adhesive strength in normal state as well as in water.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an adhesive composition for ceramic tiles,
In particular, it relates to a water-based adhesive that can be used for ceramic tiles and porcelain tiles.

Conventionally, the adhesive used to attach ceramic tiles to a predetermined construction surface has been a water-based type consisting of a water-based emulsion, a resin liquid, and a filler due to its workability and toxicity. is recommended and is actually prescribed for ceramic tiles. However, such water-based adhesives cannot be used to install porcelain tiles, which are the other two types of Sedamisoku tiles, and generally only cement-based or epoxy-based adhesives are used. do not have.

Thus, a water-based emulsion adhesive that can be used for both ceramic tiles and porcelain tiles has not yet been provided.

The present invention has been made in view of such circumstances, and
The purpose of the present invention is to provide a water-based emulsion adhesive that can be applied to both ceramic tiles and porcelain tiles, and to achieve that purpose, the present invention A resin liquid obtained by melting (A) 100 parts by weight of an aqueous emulsion in terms of solid content and (B) a tackifier resin using 1 part of the melt and/or a plasticizer and, if necessary, oil. ~200 parts by weight, (C) a nonionic surfactant for emulsifying the resin liquid, (D) 100 to 500 parts by weight of a filler, and (E)
5 to 60 parts by weight of a water-soluble solvent and/or plasticizer,
A ceramic tile adhesive composition was prepared by mixing it with a thickener, if necessary.

The adhesive composition for ceramic tiles according to the present invention exhibits excellent adhesive strength on both ceramic tiles and porcelain tiles, and exhibits excellent adhesive strength in normal conditions and water-resistant adhesive strength. In either case, an adhesive that maintains high adhesive strength and can be applied to both ceramic tiles and porcelain tiles has been realized.

By the way, in the present invention, the aqueous emulsion used as the essential compounding component A is styrene.
Butadiene copolymer latex (SBR latex),
Acrylonitrile-butadiene copolymer latex (N
BR latex), acrylic latex, acrylic
There are resin emulsions such as styrene copolymer latexes, and those having a nonvolatile content of about 45 to 60% by weight are generally suitably used. In addition, as described below, when an alkali is added to stabilize the entire composition or improve its thickening properties, this aqueous emulsion must be one that cannot be hydrolyzed by such an alkali. will be suitably used.

In addition, in the present invention, the resin liquid as compounding component B mixed into the aqueous emulsion contains a tackifying resin that imparts tackiness to the target (adhesive) composition to function as an adhesive. The tackifying resin is generally a C9 and/or C9-based resin or a copolymer thereof. There are resins, more specifically petroleum resins, coumaron-indene resins, and also ketones, xylene,
Phenol, terpene resin, rosin, disproportionated rosin,
There are hydrogenated rosin, rosin-modified resin, etc., and an appropriate one is selected from among them depending on the type of the aqueous emulsion. For example, for SBR emulsions, petroleum resins, coumaron-indene resins, etc. are used, and for acrylic emulsions, phenolic resins, natural rosin-modified resins, etc. are preferably used. .

These tackifying resins are then dissolved in a suitable solvent and/or plasticizer for each resin to obtain the desired resin liquid. A suitable aliphatic or aromatic oil may be added together with the plasticizer or in place of the plasticizer. In addition, examples of solvents for such tackifying resins include known solvents such as toluene, xylene, and petroleum naphtha, and examples of plasticizers include phthalate esters such as dioctyl phthalate and dibutyl phthalate. , and other ester-based ones can be used.

Such a resin liquid is blended at a ratio of 10 to 200 parts by weight with respect to 100 parts by weight (in terms of solid content) of the aqueous emulsion. In addition, if the blending amount of such resin liquid is less than 10 parts by weight,
If the tank (tackiness) is lost and the amount exceeds 200 parts by weight, a problem arises in that the water resistance and weather resistance of the resulting adhesive composition decreases.

Note that it is desirable to add a predetermined amount of nonionic surfactant (blending component C) to the resin liquid in advance, and the presence of such nonionic surfactant makes the resin liquid This results in uniform and good emulsification and dispersion in the adhesive composition according to the invention. Of course, such nonionic surfactants may be added and blended separately from the resin liquid without any problem. Note that this nonionic surfactant is generally used in a proportion such that it is present in the resin liquid in an amount of 0.5 to 10%.

In addition, specific examples of such nonionic surfactants include alkyl polyoxyethylene ether,
Alkylphenylpolyoxyethylene ether, alkylcarbonyloxypolyoxyethylene, N,N-di(
Examples include polyoxyethylene) alkanamide, fatty acid polyhydric alcohol ester, fatty acid polyhydric alcohol polyoxyethylene ether, fatty acid sucrose ester, and polyoxyalkylene block copolymer.

Furthermore, as the filler that constitutes the adhesive composition according to the present invention (as a compounding component), various conventionally known fillers can be used, such as calcium carbonate, clay, dolomite, silica sand, etc. can be mentioned as a typical example, but of course, it is possible to use various other fillers.Such fillers can be added to 100 parts by weight (solid) of the blended component A and the aqueous emulsion. If the amount used is too small, in other words less than 100 parts by weight,
The adhesive workability of the target tile deteriorates significantly, making it unsuitable for this purpose.On the other hand, if too large an amount exceeding 500 parts by weight is used, the film-forming properties of the resulting adhesive composition deteriorate. However, problems such as a decrease in adhesive strength also occur.

In the present invention, such compounding components A and B
, C and D, a water-soluble solvent and/or plasticizer is added as compounding component E in a proportion of 5 to 60 parts by weight per 100 parts by weight (in terms of solid content) of the aqueous emulsion that is compounding component A. As a result, it was possible to create an adhesive composition with excellent adhesive strength that can be applied to both ceramic tiles and porcelain tiles. If the amount of the water-soluble solvent and/or plasticizer is less than 5 parts by weight, problems may occur, such as poor adhesion to ceramic tiles and a shortened application time. When the amount added exceeds 60 parts by weight,
The stability of the adhesive composition deteriorates, causing problems such as gelation.

Such water-soluble solvents or plasticizers include, for example, RI
O(CH2CH20)n Ether or alcohol ether represented by the general formula of R2, and R, Co2
-・<cH2cH'i 0) Alcohol ester or ether ester represented by the general formula of n-R2, and R, O-CH,.

There are glycerol compounds such as glycerin ether represented by (R20)CH(R30)CH2 or glycerin ester with a similar structure (in the above general formula, R8, R2, R3 are 01 to C9 alkyl groups or an alkylphenyl group, and those R11R2,
A part of R3 may be hydrogen, and n is 1 to 4
), more specifically, ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol methyl ether, ethylene glycol dimethyl ether, ethylene glycol diethyl ether,
Ethylene glycol dibutyl ether; likewise, methyl of diethylene glycol.

Ethyl, butyl ether, dimethyl, diethyl.

Dibutyl ether; also methyl, ethyl, butyl ether and dimethyl of triethylene glycol.

Diethyl, dibutyl ether; ethylene glycol methyl ether acetate; glyceryl diacetate, glyceryl dimethyl, glyceryl diethyl, glyceryl trimethyl, glyceryl monoethyl, glyceryl triethyl, and the like.

Furthermore, in the present invention, in addition to the essential components A, 'B, C, D, and E of the adhesive composition as described above, the viscosity of the adhesive composition is adjusted and In order to improve adhesive workability, a predetermined thickener is added as necessary. Known thickeners such as polyacrylic acid 8, sodium polyacrylate, methyl cellulose, and CMC5HEC are used as the thickener. Product names such as ASF, -60 (manufactured by Nippon Acrylic Co., Ltd.), Aron A-'7020 (manufactured by Toagosei Co., Ltd.), IV-30 (manufactured by Airlite Colloid Co., Ltd., UK), etc. However, among sodium polyacrylate-based thickeners, products with trade names such as Aron A-20I- and A-20P (manufactured by Toagosei Co., Ltd.) are used, as well as medyl cellulose-based thickeners. In this case, products with trade names such as Metrose, Himetrose (manufactured by Shin-Etsu Chemical Co., Ltd.), and Marporose (manufactured by Matsumoto Yushi Co., Ltd.) are used.

Furthermore, in the adhesive composition according to the present invention, an alkali may be added as necessary in order to stabilize the emulsion form. This alkali is also added to neutralize thickeners such as polyacrylic acid, and by neutralizing such thickeners, a thickening effect is exerted or the effect is is enhanced. Note that ammonia (water), caustic soda, caustic potash, etc. can be used as this alkali, but in the present invention, it is recommended to use ammonia (water), which disappears by drying. .

As mentioned above, the thus obtained adhesive 1 composition according to the present invention is a water-based emulsion adhesive that can be applied not only to ceramic tiles but also to adhesive construction of porcelain tiles. This has made it possible to significantly improve the workability of ceramic tiles in general, and it has also improved its toxicity and work safety compared to conventional solvent-based adhesives. The present invention has great industrial significance in that it has become an excellent adhesive in this respect, and the workability of ceramic tiles has been significantly improved.

In order to clarify the present invention more specifically, some examples will be shown below, but the present invention should not be construed in any way limited by the description of such examples. It goes without saying. It should be noted that the percentages and parts in the examples are expressed on a weight basis unless otherwise specified.

Examples 1-3 Three types of adhesive compositions according to each example were mixed with the required parts of each component in the formulation shown in Table 1 below. In addition, when mixing,
Addition and mixing were performed so that the calcium carbonate as a filler was added last. In addition, for each adhesive, the non-volatile content was measured according to JIS K-6839r Volatile Content Measuring Method for Adhesives, and the penetration (consistency) was measured according to JIS K-, J530r petroleum moxibustion phalt needle strength test method. ” (However, the consistency needle is JIS, 2-2
The results were also shown in Table 1.

3 Table 1 *l... Calcium carbonate *2... 150 parts of petroleum resin + (toluene 10 petroleum naphtha) 25 parts 10 aromatic oil 40 parts 10 polyoxyethylene nonylphenol ether (surfactant) 4 5 parts *3: Diethylene glycol ethyl ether *4: Brimal ASE-60 (manufactured by Nippon Acrylic Co., Ltd.; polyacrylic acid type) Next, the three types of adhesive compositions obtained in this way were combined into an adhesive. The normal adhesive strength and water-resistant adhesive strength were investigated when porcelain tiles and ceramic tiles were bonded together using a commercially available SBR water-based adhesive 1.2. The results are shown in Tables 2 and 3 below.

As is clear from the results in Tables 2 and 3, the adhesive composition according to the present invention has excellent normal adhesive strength and waterproof adhesive strength on both porcelain tiles and ceramic tiles. On the other hand, when commercial products 1 and 2, which are SBR-based water-based adhesives, are used, the water-resistant adhesive strength is low on both porcelain tiles and ceramic tiles, making it completely impractical. It was determined that

5 The method adopted in this adhesive force test is as follows.

Adhesive strength under normal conditions - Apply to a slate board using a comb-shaped trowel in a constant temperature room,
After 5 minutes of open time, ceramic tiles (Ina Seito: Colorcon Mosaic) and porcelain tiles (Ina Seito: Colorcon Mosaic) were displayed.
After pasting the semi-porcelain tiles and curing them for 14 days, measurements were taken using a tensile test using a universal testing machine.

- Water resistant adhesive strength - Tiles are pasted in the same way as in the normal test, cured for 14 days, then immersed in water for 7 days and measured.

Table 2 Unit: kg / cJ 6 Table 3 Tensile test results (water resistant adhesive strength) Applicant Nobuyuki Kato 7

Claims (1)

[Claims] (A) 100 parts by weight of an aqueous emulsion in terms of solid content, and (B) a resin liquid obtained by melting 100 parts by weight of a tackifier resin using a solvent and/or plasticizer and, if necessary, oil. 100 to 5 parts by weight, (C) a nonionic surfactant for emulsifying the resin liquid, and (D) a filler.
00 parts by weight and (E) 5 to 60 parts by weight of a water-soluble solvent and/or plasticizer, together with a thickener blended as necessary, is an adhesive composition for ceramic tiles. .