JPH08325553A - Adhesive for floor material - Google Patents

Abstract

PURPOSE: To obtain an adhesive for floor material composed mainly of a modified silicone polymer and its curing catalyst, having excellent applicability and shape-retaining property, etc., after application and especially useful for the bonding of a woody floor material to obtain a floor free from noise generation even by walking a person, etc., on the floor. CONSTITUTION: The objective adhesive is composed mainly of (A) a modified silicone polymer and (B) its curing catalyst and has a nonvolatile content of >=90wt.%, a viscosity of 50,000-1,000,000cp and a structural viscosity coefficient of >=4.0 in uncured state and an elongation at the maximum load of >=50% by tensile adhesion test and a permanent elongation of <=50% by permanent elongation test in cured state. The component A preferably contains the structural unit of formula I or formula II [R<1> is an alkyl, an aryl, etc.; X is hydroxy, a halogen, an alkoxy, etc.; (a) is an integer of 0-2; R<2> is a bivalent organic group such as -R<3> -, -R<3> -O-R<4> (R<3> , R<4> are each a 1-20C bivalent hydrocarbon group), etc.; (b) is 0 or 1].

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive for flooring materials, and in particular, it is used for adhering wooden flooring materials, and when a person or the like walks on the floor after construction to step on the flooring material, TECHNICAL FIELD The present invention relates to an adhesive for floor materials that does not generate sound from the material.

[0002]

2. Description of the Related Art Conventionally, polyvinyl acetate solvent type adhesives or polyvinyl acetate aqueous emulsion type adhesives have been mainly used as adhesives for flooring materials such as wooden flooring materials.
As this floor adhesive, it is required that when a person walks on the floor after construction, the floor material does not generate a sound (hereinafter referred to as “squeaking”) when the floor material is stepped on. It

As an adhesive for preventing floor squeal, Japanese Patent Application Laid-Open No. 5-339550 discloses a synthetic resin as a main component obtained by emulsion polymerization of a mixture of vinyl acetate and another unsaturated monomer. , A synthetic resin water-based emulsion type adhesive composition has been proposed.

[0004]

However, in the above proposed synthetic resin water-based emulsion type adhesive composition,
Floor noises were not adequately prevented. There are two possible causes for this. Since the volatile content is large, many minute voids are generated in the adhesive layer after curing. Therefore, when the floor material is deformed, the adhesive layer once contacts due to the compression of the voids, and when the deformation returns and the adhesive layer peels off, floor squeal due to surface tack occurs. Since there is almost no rubber elasticity after curing, the stress at the time of floor material deformation cannot be sufficiently absorbed, and floor squeal occurs due to squeaking of the floor material.

Further, these conventional adhesives do not have sufficient viscosity and thixotropy and have poor coatability, and when applied to a stepped adherend, the shape is not sufficiently retained, so that the adhesive area is small. It was not possible to secure it, and this caused peeling of the floor material and squealing of the floor.

The present invention has been made in view of the above problems, and an object of the present invention is to produce a sound from a floor material when a person walks on the floor after the construction to step on the floor material. An object of the present invention is to provide a flooring adhesive that does not generate.

[0007]

The flooring adhesive of the present invention is a flooring adhesive containing a modified silicone polymer and a curing catalyst for the flooring as a main component. Physical properties: nonvolatile content of 90% by weight or more, viscosity: 50,000 to 1
3,000,000 cP (centipoise) and structural viscosity coefficient of 4.
0 or more, physical properties after curing, elongation at maximum load of 50% in a tensile adhesion test according to JIS A 5758
The adhesive for flooring is characterized by having the above-mentioned properties and a permanent elongation of 50% or less in a permanent elongation test according to JIS K 6301.

As the modified silicone polymer used in the present invention, various modified silicone polymers having different average molecular weights, molecular weight distributions and the like have been commercially available. However, the modified silicone polymer is not particularly limited to these and any of them can be used. It is possible.

The modified silicone polymer used in the present invention has, for example, a hydroxyl group or a hydrolyzable group-bonding reactive silicon group represented by the following general formula (I) or (II), and has a siloxane bond. Examples thereof include a reactive silicon group-containing oxyalkylene polymer having at least one reactive silicon group at the end that can be crosslinked by forming and the main chain of which is an oxyalkylene polymer.

[0010]

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Here, R ¹ is a monovalent hydrocarbon group having 1 to 12 carbon atoms selected from an alkyl group and an aryl group; X
Is a group selected from a hydroxyl group, a halogen group, an alkoxy group, an acyloxy group, a ketoximate group, an amide group, an acid amide group, an aminooxy group and a mercapto group;
An integer of 2; R ² is —R ³ — or —R ³ —O—R ⁴ —
(In the formula, R ³ and R ⁴ are divalent hydrocarbon groups having 1 to 20 carbon atoms), a group selected from a divalent organic group; b is 0 or 1.

These reactive silicon group-containing oxyalkylene polymers may be used alone or in combination of two or more kinds.

The reactive silicon group-containing oxyalkylene polymer having at least one reactive silicon group represented by the general formula (I) at the terminal and the main chain being an oxyalkylene polymer is For example, it is synthesized by the method described in JP-A-3-72527. That is, in the presence of a complex metal cyanide complex catalyst, a monoepoxide is subjected to ring-opening addition polymerization in an initiator such as a polyhydric alcohol, and then the hydroxyl group at the molecular end is converted into an unsaturated group, and further the unsaturated group is converted into It is synthesized by reacting a hydrosilicon compound represented by the formula (III).

[0014]

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The reactive silicon group-containing oxyalkylene polymer is preferably a reactive silicon group-containing propylene oxide polymer having a main chain of propylene oxide, and has a number average molecular weight of 5,000 to 30.
000 is preferable.

Examples of commercially available products of the above-mentioned reactive silicon group-containing propylene oxide polymer include, for example, R ¹ in the general formula (I) is CH ₃ , X is OCH ₃ , and a is 1.
Asahi Glass Co., Ltd. product name "Exestar 3620" which has a number average molecular weight of about 20,000 is mentioned.

Commercially available products of the above-mentioned reactive silicon group-containing propylene oxide polymer include, for example, R ¹ in the general formula (I) is CH ₃ , X is OCH ₃ , and a is 1.
Asahi Glass Co., Ltd.'s trade name “Excester 3430” having a number average molecular weight of about 17,000 can be mentioned.

Examples of commercially available reactive silicon group-containing propylene oxide polymers include, for example, R ¹ in the general formula (I) is CH ₃ , X is OCH ₃ , and a is 1.
Asahi Glass Co., Ltd. product number "Exestar 2420" which has a number average molecular weight of about 17,000 is mentioned.

Commercially available products of the above-mentioned reactive silicon group-containing propylene oxide polymer include, for example, R ¹ in the general formula (I) is CH ₃ , X is OCH ₃ , and a is 1.
Asahi Glass Co., Ltd., trade name "Excester 2410" having a number average molecular weight of about 17,000 can be mentioned.

Commercially available products of the above-mentioned reactive propylene group-containing propylene oxide polymer are, for example, Kanebuchi Chemical Industry Co., Ltd. in which R ¹ is CH ₃ , X is OCH ₃ and a is 1 in the general formula (I). Product name "MS Polymer S-203"
Is mentioned.

Commercially available products of the above-mentioned reactive silicon group-containing propylene oxide polymer are, for example, Kanebuchi Chemical Industry Co., Ltd., in which R ¹ in the general formula (I) is CH ₃ , X is OCH ₃ , and a is 1. Product name "MS Polymer S-303"
Is mentioned.

The reactive silicon group-containing oxyalkylene polymer having at least one reactive silicon group at the end represented by the general formula (II) and having a main chain of an oxyalkylene polymer is For example, it is synthesized by the method described in JP-A-52-73998. That is, it is synthesized by introducing an ether type allyl olefin group at the end of a polyoxyalkylene polyol and then reacting with a hydrosilicon compound represented by the general formula (III).

The modified silicone polymer curing catalyst is used to accelerate the moisture curing reaction of the flooring adhesive of the present invention. As the curing catalyst, a silanol condensation catalyst which is conventionally used as a curing catalyst for curing a modified silicone polymer is suitable, and examples thereof include dibutyltin dilaurate and bis (dibutyltin lauric acid).
Oxide (eg Sansha Kisei Gosei Co., Ltd., trade name SB
-65), dibutyltin oxide, dibutyltin diacetate, dibutyltin phthalate, dibutyltin bisacetylacetonate, dibutyltin bis (monoester malate), tin octylate, dibutyltin octoate, dioctyltin oxide, and other tin compounds; Titanate compounds such as tetra-n-butoxy titanate and tetraisopropoxy titanate; amine salts such as dibutylamine-2-ethylhexoate; and other acidic catalysts and basic catalysts, which may be used alone or in combination with 2 You may use together 1 or more types.

Further, as a co-catalyst for enhancing the curability, silane compounds and amine compounds, for example, ketoxime silane; alkoxy silane; amino group-substituted alkoxy silanes such as aminoxy silane and amido silane; lauryl amine or derivatives thereof. Is mentioned.

The amount of the curing catalyst is preferably 0.1 to 5 parts by weight based on 100 parts by weight of the modified silicone polymer.

In addition, the flooring adhesive of the present invention may contain a compound having an amino group and an alkoxysilyl group in one molecule as an adhesiveness-imparting agent, if necessary, in order to improve the adhesive performance. Good. Examples of the compound include
3-aminopropyltrimethoxysilane, 3-aminopropylmethyldimethoxysilane, 3-aminopropyltriethoxysilane, N- (2-aminoethyl) -3-aminopropyltrimethoxysilane, N- (2-aminoethyl)- 3-aminopropylmethyldimethoxysilane,
N- (2-aminoethyl) -3-aminopropyltriethoxysilane, N, N'-bis- [3- (trimethoxysilyl) propyl] ethylenediamine, N, N'-bis- [3- (triethoxysilyl) ) Propyl] ethylenediamine, N, N'-bis- [3- (methyldimethoxysilyl) propyl] ethylenediamine, N, N'-bis-
[3- (Trimethoxysilyl) propyl] hexamethylenediamine, N, N'-bis- [3- (triethoxysilyl) propyl] hexamethylenediamine, N, N'-
Bis- [3- (methyldimethoxysilyl) propyl] hexamethylenediamine, N, N-bis- [3- (trimethoxysilyl) propyl] ethylenediamine, N, N-
Bis- [3- (methyldimethoxysilyl) propyl] ethylenediamine, N, N-bis- [3- (triethoxysilyl) propyl] ethylenediamine, N, N-bis-
[3- (Trimethoxysilyl) propyl] hexamethylenediamine, N, N-bis- [3- (methyldimethoxysilyl) propyl] hexamethylenediamine, N, N-
Bis- [3- (triethoxysilyl) propyl] hexamethylenediamine, N, N-bis- [3- (trimethoxysilyl) propyl] amine, N, N-bis- [3-
Examples thereof include (triethoxysilyl) propyl] amine and N, N-bis- [3- (methyldimethoxysilyl) propyl] amine, and these may be used alone or in combination of two or more.

If desired, the flooring adhesive of the present invention may contain a dehydrating agent to remove water entering the adhesive during storage. Examples of the dehydrating agent include silane compounds such as vinyltrimethoxysilane, dimethyldimethoxysilane, tetraethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, and tetramethoxysilane; methyl orthoformate, ethyl orthoformate, orthoacetic acid. Examples thereof include hydrolyzable ester compounds such as methyl and ethyl orthoacetate, and these may be used alone or in combination of two or more kinds.

If desired, the flooring adhesive of the present invention may contain a plasticizer in order to increase the elongation of the cured product or to reduce the modulus. Examples of the plasticizer include phosphates such as tributyl phosphate and tricresyl phosphate; phthalates such as dioctyl phthalate; fatty acid monobasic esters such as glycerin monooleate; dibutyl adipate and dioctyl adipate. And fatty acid dibasic acid esters such as; and polypropylene glycol, etc.
You may use together 1 or more types.

If desired, the flooring adhesive of the present invention may contain an anti-sagging agent such as hydrogenated castor oil, fatty acid bisamide, fumed silica or the like for preventing sagging. .

Further, the flooring adhesive of the present invention may contain various fillers for the purpose of reinforcement, if necessary. Examples of the filler include calcium carbonate,
Examples thereof include magnesium carbonate, calcium oxide, hydrous silicic acid, silicic acid anhydride, finely powdered silica, calcium silicate, titanium dioxide, clay, talc, carbon black, and glass balloons. These may be used alone or in combination of two or more. Good.

The floor adhesive of the present invention may further contain, if necessary, an antioxidant, an antioxidant, an ultraviolet absorber,
A pigment, a fragrance, a solvent (for example, xylene), etc. may be contained.

The flooring adhesive of the present invention comprises a modified silicone polymer, a curing catalyst and, if necessary, an adhesiveness-imparting agent,
Dehydrating agent, plasticizer, anti-sagging agent, filler, anti-aging agent, antioxidant, ultraviolet absorber, pigment, fragrance, solvent and the like are blended in a predetermined amount, and obtained by kneading with a roll, planetary mixer, etc. .

The flooring adhesive of the present invention can be formulated as either a one-component type or a two-component type, but the one-component type is preferred from the viewpoint of ease of construction.

When the flooring adhesive of the present invention is made into a one-component type, it cures when it comes into contact with moisture in the air. In order to prevent this, it is necessary to be able to block and seal the adhesive from the outside air. For example, various types of cartridge containers conventionally used in the field of sealing materials,
A film container can be used.

In the physical properties of the flooring adhesive of the present invention before curing, when the nonvolatile content is low, a large number of voids are formed in the cured product after curing, and floor squeaking is likely to occur, so the nonvolatile content is 90%. It is limited to not less than wt%, preferably 90 to 1
00% by weight, more preferably 95-100% by weight
Is.

In the physical properties before curing, the adhesive for flooring material of the present invention has a low viscosity, so that when it is applied to an adherend having a step, its shape is not sufficiently retained, so that the adhesive area cannot be secured and the flooring cannot be secured. If the viscosity is high, the coating property will be poor and the viscosity will be 50,000-
It is limited to 1 million cP (centipoise), preferably 200,000 to 500,000 cP (centipoise).

The above viscosity was measured with a BS type viscometer using a rotor No. 7 at a rotation speed of 10 rpm and a temperature of 20.
Refers to the viscosity measured in ° C.

In the physical properties before curing, the adhesive for flooring of the present invention has a low structural viscosity coefficient, so that when it is applied to an adherend having a step, the shape is not sufficiently retained, so that the adhesive area can be secured. However, the structural viscosity is limited to 4.0 or more because it is likely to cause peeling of the floor material and floor squeal.

The above structural viscosity coefficient was measured by a BS type viscometer using a rotor No. 7 and a rotation speed of 1 rpm at a temperature of 20 ° C., and the viscosity was A. , Rotor No. 7 and the number of revolutions is 10 rpm, and the viscosity measured at a temperature of 20 ° C. is B, the value is indicated by A / B.

Further, in the adhesive for flooring material of the present invention, if the elongation is small in the physical properties after curing, floor squealing due to creaking of the flooring material is likely to occur during deformation of the flooring material.
The elongation at maximum load in the tensile adhesion test according to ISA 5758 (sealing material for construction) is limited to 50% or more, preferably 100% or more.

In the physical properties after curing, the flooring adhesive of the present invention is apt to generate a tack noise when the permanent elongation is large. Therefore, the permanent adhesive according to JIS K 6301 (vulcanized rubber physical test method) is used. The permanent elongation in the elongation test is limited to 50% or less, preferably 0 to 20%.

The flooring adhesive of the present invention can form a flooring structure by bonding a flooring material and a flooring base material.

Examples of the above floor materials include wood flooring, tiles, vinyl chloride sheets, stone materials and the like. In addition, sheets that are sandwiched in order to enhance sound insulation and vibration damping are also examples of floor materials. Examples of the sound insulating and vibration damping sheets include high specific gravity sheets, for example, high specific gravity inorganic substance-filled vinyl chloride sheets, crushed slag-asphalt type vibration damping and sound insulating sheets, metal chips-glass cloth laminated sound insulating materials. Etc. Commercially available products of the vinyl chloride sheet filled with the high specific gravity inorganic material include those manufactured by Nippon Mining Co., Ltd., trade name "Cactus Silent", Sanyo Kogyo Co., Ltd., trade name "Three Shadan", Sekisui Chemical Co., Ltd., trade name "Vibless Sheet". Is mentioned.

As the above-mentioned floor base material, for example, plywood,
Examples include wood joists, gypsum boards, slate boards, and concrete.

As an example of the floor structure, a wooden floor material (for example, product name "Super 6" manufactured by Asahi Woodtech Co., Ltd.) is used as the floor material, and a particle board is used as the floor base material. A floor structure that is adhered by an adhesive may be used.

(Function) Since the conventional polyvinyl acetate-based flooring adhesive is a volatilization-curing type and has a large amount of volatile components, a large number of voids usually remain in the adhesive layer after curing, and these voids are When compressed by the body weight, the adhesive layer once comes into contact with it, and when deformation returns and the adhesive layer peels off, floor squeal due to surface tack occurs. In addition, since the polyvinyl acetate-based flooring adhesive has a low elasticity in the adhesive layer after curing and cannot absorb stress such as compression and deformation of the flooring, it is considered that the flooring itself produces a squeaking noise. On the other hand, the modified silicone-based flooring adhesive of the present invention has physical properties before curing,
Nonvolatile content 90% by weight or more, viscosity 50,000 to 1,000,000 cP
(Centipoise) and structural viscosity coefficient of 4.0 or more, physical properties after curing, elongation at maximum load in tensile adhesion test according to JIS A 5758 is 50% or more, and permanent elongation according to JIS K 6301. Since the permanent elongation in the test has a performance of 50% or less, it is a high solid content, high elasticity adhesive, and by using it as a flooring material, an adhesive layer without voids can be formed and at the time of walking on the floor. Since the adhesive layer absorbs stress such as compression and deformation of the floor material, the floor squeal phenomenon can be prevented. In terms of physical properties before curing, the non-volatile content is 90% by weight or more, the viscosity is 50,000 to 1,000,000 cP (centipoise), and the structural viscosity coefficient is 4.0 or more, so that the viscosity and thixotropy are sufficient, and the coating property is good. Is good, and when it is applied to the adherend with steps,
The shape is sufficiently retained and the adhesive area can be secured, so that the floor material does not peel or squeal.

[0047]

BEST MODE FOR CARRYING OUT THE INVENTION Examples and comparative examples of the present invention will be shown below. (Example 1) Modified silicone polymer (Asahi Glass Co., Ltd., trade name "Excester 3620", molecular weight 20000) 1
00 parts by weight, a tin-based catalyst as a curing catalyst [bis (dibutyltinlauric acid) oxide, manufactured by Sansha Kisei Co., Ltd., trade name "SB-65"] 2 parts by weight, dioctyl phthalate as a plasticizer (manufactured by Sekisui Chemical Co., Ltd.) ) 70 parts by weight, as filler a heavy calcium carbonate (manufactured by Shiraishi Industry Co., Ltd., trade name "Whiten P-30") 150 parts by weight, colloidal calcium carbonate (manufactured by Shiraishi Industry Co., Ltd., trade name "CCR") 80 parts by weight ,
4 parts by weight of vinylsilane (manufactured by Toshiba Silicone, trade name "TSL-8310") as a dehydrating agent, aminosilane (manufactured by Toshiba Silicone, trade name "TSL-" as an adhesion promoter.
8345 ") and 2 parts by weight were mixed in a planetary mixer under vacuum for about 60 minutes to obtain an adhesive for flooring material, and the paper cartridge container was hermetically filled.

(Example 2) Instead of the modified silicone polymer in Example 1, a modified silicone polymer (trade name "Excester 3430" manufactured by Asahi Glass Co., Ltd., molecular weight 1) was used.
7,000) was used, an adhesive for flooring material was obtained in the same manner as in Example 1, and then sealed in a paper cartridge container.

(Example 3) Instead of the modified silicone polymer in Example 1, a modified silicone polymer (trade name "Excester 2420" manufactured by Asahi Glass Co., Ltd., molecular weight 1) was used.
7,000) was used, an adhesive for flooring material was obtained in the same manner as in Example 1, and then sealed in a paper cartridge container.

(Example 4) Instead of the modified silicone polymer in Example 1, a modified silicone polymer (trade name "Excester 2410" manufactured by Asahi Glass Co., Ltd., molecular weight 1) was used.
7,000) was used, an adhesive for flooring material was obtained in the same manner as in Example 1, and then sealed in a paper cartridge container.

(Example 5) In place of the modified silicone polymer used in Example 1, modified silicone polymer (trade name "S-203", manufactured by Kanegafuchi Chemical Industry Co., Ltd.) was used. After the adhesive for flooring was obtained in the same manner, it was sealed and filled in a paper cartridge container.

(Example 6) In place of the modified silicone polymer used in Example 1, a modified silicone polymer (trade name "S-303", manufactured by Kanegafuchi Chemical Industry Co., Ltd.) was used. After the adhesive for flooring was obtained in the same manner, it was sealed and filled in a paper cartridge container.

(Comparative Example 1) 100 parts by weight of vinyl acetate monomer, polyvinyl alcohol (manufactured by Kuraray Co., Ltd., trade name "2")
17 EE "), polyvinyl alcohol (Kuraray Co., Ltd., trade name" CST ") 7 parts by weight, potassium persulfate 0.6 parts by weight as a catalyst, dibutyl phthalate 13 parts by weight as a plasticizer and water 160 parts by weight. Then, a polymerization reaction was carried out to prepare a polyvinyl acetate aqueous emulsion type adhesive.

Comparative Example 2 A polyvinyl acetate methanol solution (manufactured by Sekisui Chemical Co., Ltd., trade name “for Sekisui bond floor tile”) was prepared.

Comparative Example 3 An acrylic aqueous emulsion (manufactured by Sekisui Chemical Co., Ltd., trade name "Sekisui acrylic sealant") was prepared.

Performance Evaluation The adhesives of Examples 1 to 6 and Comparative Examples 1 to 3 were compared in performance by the test methods shown below, and the results are shown in Table 1. Nonvolatile content In accordance with JIS A 5758, heat loss (80 ° C, 1
Weight loss after 4 days) was measured. Viscosity BS type viscometer, rotor No.7, rotation speed 10rp
It was measured at a temperature of 20 ° C. under the condition of m 2. Structural viscosity coefficient BS type viscometer, using rotor No.7, rotation speed 1 rpm
Under the conditions of, the viscosity A at a temperature of 20 ° C and the BS type viscometer
Rotor No. 7 is used, and the temperature is 2 at 10 rpm.
The viscosity B was measured at 0 ° C., and A / B was calculated as the structural viscosity coefficient. Elongation at maximum load A tensile adhesion test (measurement under non-primer conditions using an aluminum plate as an adherend) according to JIS A 5758 was performed to measure the elongation at maximum load. Permanent Elongation In a permanent elongation test according to JIS K 6301, the amount of deformation was measured as 50% of the elongation (%).

Tack sound Adhered material and size Floor material Floor material 12 mm × 303 mm × 100 mm
(Fiber direction) Floor base material Softwood plywood 20 mm x 303 mm (Fiber direction) x 200 mm Preparation of specimens Adhesive with a predetermined comb edge on the softwood plywood in the short side direction and on the floor material in the long side direction. It was applied and cured without pasting. Curing Curing was carried out for 14 days under the conditions of 20 ° C and relative humidity of 65%. Test Method A spacer (2 mm × 20 mm × 100 mm) was arranged on one side, and the adhesive-coated surfaces were aligned and placed on the floor, and the central portion was stepped on. A sound level meter [Type 1015 + Type 3303 (manufactured by JEIC Electronics Co., Ltd.)] is installed at a distance of 50 cm from the test body, and the generated sound is 2000 Hz
The sound pressure level (dB (A)) was measured and evaluated according to the following criteria. ◯: No floor ringing sound (45 dB or less) Δ: Slight floor ringing sound (46 to 59 dB) ×: Floor ringing sound (60 dB or more)

Squeaking sound Adhering material and size Floor material Floor material 12 mm × 303 mm × 450 mm
(Fiber direction) Floor base material Softwood plywood 20 mm × 400 mm (Fiber direction) × 500 mm Preparation of test specimens Adhesive was applied at intervals of 303 mm (center distribution) along the short side of the softwood plywood in the form of beads of about 6 mm each. . The floor material was crimped so that the adhesive spreads appropriately. Curing Curing was carried out for 14 days under the conditions of 20 ° C and relative humidity of 65%. Test method The central portion in the length direction was fixed, a displacement of 3.0 mm was applied to both ends at a speed of 500 mm / min, and the sound volume at that time was sensory evaluated according to the following criteria. ○: No ringing noise △: Slight ringing noise ×: Flooring noise

[0059]

[Table 1]

As shown in the results shown in Table 1, when the flooring adhesive of the present invention is used, excellent soundproofing properties, applicability, and shape retention properties can be exhibited.

[0061]

The construction of the flooring adhesive of the present invention is as described above, and the modified silicone polymer and its curing catalyst are the main components, and the physical properties before and after curing are as described above. When a person or the like walks on the floor afterward, no noise is generated from the floor material when the floor material is stepped on, and the coating property and the shape retention property after construction are excellent.

Claims (1)

[Claims] 1. An adhesive for flooring, which comprises a modified silicone polymer and a curing catalyst thereof as a main component, wherein the physical properties of the adhesive for flooring before curing are 90% by weight or more in nonvolatile content and 5 in viscosity. 10,000 to 1,000,000 cP (centipoise), structural viscosity coefficient of 4.0 or more, physical properties after curing are JIS A 57
An adhesive for flooring, which has an elongation at maximum load of 50% or more in a tensile adhesion test according to 58 and a permanent elongation of 50% or less in a permanent elongation test according to JIS K 6301. .