JPH10306210A - Curable composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a white curable composition reduced in weight without deteriorating tensile characteristics, etc., by including a polysulfide polyether polymer, a specific urethane prepolymer and surface coated organic microspheres in a specified proportion therein. SOLUTION: This composition contains (A) a polysulfide polyether polymer, (B) a urethane prepolymer, having two or more isocyanate groups in one molecule and preferably prepared by reacting an organic polyisocyanate compound and/or an active hydrogen-containing compound with a polyisocyanate compound and (C) organic hollow microspheres having the surface coated with a filler such as carlcium carbonate, a surface treated calcium carbonate, titanium oxide or silicon oxide and is obtained by including 0.5-10 wt.% component C so as to provide 0.5-1.5 molar ratio (isocyanate groups/thiol groups) of isocyanate groups in the component B to thiol groups in the component A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curable composition used for a lightweight sealing material, a sealing material using the same, and a method for producing the same. More particularly, the present invention relates to a polysulfide polyether polymer and two or more polysulfide polyethers per molecule. The present invention relates to a curable composition containing a compound having an isocyanate group, and a hollow organic fine body coated on the surface, and a method for producing the same.

[0002]

2. Description of the Related Art In recent years, curable compositions have been used for various applications. Such curable compositions are disclosed in Japanese Patent Application No. 4-366121, a polysulfide polyether polymer, Compositions containing a compound having two or more isocyanate groups have been reported.
However, due to problems such as transportation and workability, it is desired to reduce the specific gravity without significantly affecting the physical properties such as the tensile properties of these curable compositions. When a curable resin is used for a sealing material, an adhesive, a coating agent, or the like, various fillers are added to obtain desired physical properties or to reduce specific gravity.

[0003]

However, such fillers are not necessarily low in specific gravity. Even if the desired physical properties can be obtained by adding the fillers, the weight of the curable composition increases, and In some cases, the specific gravity did not decrease as expected. As a technique for preparing a curable composition by mixing a fine hollow body with a polymer, for example, Japanese Patent Application Laid-Open No.
Nos. 6 and 4-8788. The former relates to a composition in which microbalun composed of borosilicate silica and microbalun composed of phenolic resin are mixed at a specific ratio with condensed polysiloxane as lightweight insulation and heat absorbing material around the engine of a flying object such as a rocket. A composition comprising a liquid silicone rubber and a micro balloon is used as a cover member for a hard disk drive.

Japanese Patent Application Laid-Open No. 7-113073 discloses an example in which a plastic balun and / or silica balun is blended into a sealing composition to form a matte sealing composition. In addition to having a significant effect on the cured physical properties of the product, it is very difficult to disperse it in the sealing composition, and poor dispersion or, or, often, the balun will be destroyed during kneading, causing the quality to be unstable Becomes In addition, the inventors of the present invention have already made polyurethane resin, silicone resin,
An application has been filed for an adhesive composition containing a room temperature curable resin component such as a modified silicone resin, an epoxy resin, and a polysulfide rubber, and a plastic balun surface-coated with inorganic fine powder, and a method for producing the same. These compositions are used as sealing materials for outer walls and the like. However, in such compositions, a composition containing a polyurethane resin, a silicone resin, and a modified silicone resin has a problem that dirt easily adheres. Further, the composition containing the polysulfide rubber is easily cured when mixed with an oxidizing agent, and the thiol group is an epoxy group,
It easily reacts with isocyanate groups and the like to increase the molecular weight, but only a limited curing agent can be used and Pb
Although readily cured by O _2, MnO ₂ or the like oxidizing agent, inevitably coloring with an oxidizing agent, white cured product of can not be obtained.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a curable composition containing a specific surface-coated organic micro hollow body in an uncured curable composition. Try to offer things. By using a plastic balun coated with at least one inorganic material selected from the group consisting of calcium carbonate, surface-treated calcium carbonate, silicon dioxide, talc, clay and carbon black, the balun into the polysulfide ether polymer can be obtained. It has been found that the kneading properties of the cured composition are remarkably improved, the physical properties of the cured composition hardly change, and a white sealing material to which dirt hardly adheres is obtained. That is, an object of the present invention is to obtain a light-weight white curable composition without deteriorating physical properties such as tensile properties of the curable composition. Furthermore, in kneading the polysulfide ether polymer and the organic micro hollow body coated on the surface, it is easy to knead, it is difficult to entrain air,
It is an object of the present invention to provide a kneading method that does not wear the device.

That is, the present invention comprises a polysulfide ether polymer, a urethane prepolymer having two or more isocyanate groups in one molecule, and a fine hollow body coated on the surface, wherein two or more molecules are contained in the molecule. The molar ratio (isocyanate group / thiol group) of the isocyanate group in the compound having an isocyanate group to the thiol group in the polysulfide polyether polymer is 0.5.
~ 1.5 is a curable composition. It is preferable that the minute hollow body is an organic minute hollow body. Also,
The addition amount of the minute hollow body may be 0.5 to 10% by weight based on the total weight of the curable composition.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
The organic micro hollow body (hereinafter referred to as balun) used in the method of the present invention has a true specific gravity of 0.05 to 0.5 g / cm ³ ,
For example, “The latest technology for functional fillers” (CMC)
As described in above, a hollow body composed of an organic substance having a diameter of 5 to 200 μm and having at least a part of its surface covered with a filler. The balun used in the curable composition of the present invention preferably has a diameter of 5 to 200 μm. The reason why the diameter of the balun is set in this range is that if it exceeds 200 μm, it tends to be crushed during kneading with the polysulfide ether polymer, and if it is less than 5 μm, the specific gravity becomes large, which is not the purpose of reducing the weight of the composition. The effect is remarkable when it is in the range of 30 to 50 μm.

As organic balun, phenol resin, epoxy resin, urea resin, polyvinylidene chloride resin, polystyrene resin, polymethacrylate, polyvinyl alcohol, styrene
Examples include acrylic resins, copolymers of vinylidene chloride and acrylonitrile, copolymers of acrylonitrile and methacrylonitrile, and terpolymers of vinylidene chloride, acrylonitrile and divinylbenzene.

The balun is partially or entirely coated with a filler comprising at least one selected from calcium carbonate, surface-treated calcium carbonate, titanium oxide, silicon oxide, talc, clay, carbon black and the like. I have. The surface coating facilitates kneading of balun into the polysulfide ether polymer, and at the time of kneading, transfer, and construction, a suitable thixotropy is obtained, and work efficiency is improved. The balun here may be a balun after foaming, or a balun obtained by blending a material containing a foaming agent and then foaming. By using balun made of an organic curable resin as described above, when the composition is used as a sealing material, for example, the spatula is smooth, the feel is good, and the construction is easy. However, when an inorganic balun such as a glass balun is used, the worker feels uncomfortable due to jarring and unpleasant spatula, and the working efficiency is not improved. Further, these organic baluns are not easily crushed by mechanical kneading force when kneading with a polysulfide ether polymer, and do not wear a kneading device (kneader or the like) or a transfer device (pump or the like).

Specific examples of the organic balun surface-coated with a filler include Matsumoto Microsphere L80GTi (manufactured by Matsumoto Yushi Seiyaku Co., Ltd.). These baluns have a true specific gravity of 0.05 to 0.5 g / cm ³
Use In particular, the effect is remarkable when 0.10 to 0.30 g / cm ³ is used. True specific gravity 0.05-0.
It is preferable to use a balun of 5 g / cm ³ for the purpose of reducing the weight of the curable composition, and it is easy to obtain a balun having a high strength due to the relationship with the thickness and the particle diameter of the balun. Because.

[0011] The amount of the fine hollow body to be added to the curable composition of the present invention is 0.5% of the total weight of the curable composition.
-10% by weight. The addition amount was set in the above range,
If the amount is less than 0.5% by weight, the effect of reducing the weight of the composition will be insufficient, and if it exceeds 10% by weight, the mechanical strength of the composition will decrease. The addition amount of the above minute hollow body is 0.5 to 3.0.
The effect is remarkable when it is% by weight.

The polysulfide ether polymer used in the present invention has, in its main chain, (1)-(R ¹ O) _n- (wherein R ¹ is an alkylene group having 2 to 4 carbon atoms, and n is 6 to 6).
A polyether moiety represented by represents) an integer of 200, (2) (a) - (C 2 H 4 OCH 2 OC 2 H 4 -S x)
-, _{and, (b) - (CH 2} CH (OH) CH 2 -S
_x) - (wherein, x represents and a structural unit represented by a is) an integer from 1 to 5, and the terminal, (3) (d) -C 2 H 4 OCH 2 OC 2 H 4 - SH, and / _{or, (e) -CH 2 CH (} OH) CH 2 -S
It has a thiol group represented by H 2. As such a polysulfide ether polymer, a commercially available product can be used. For example, LP manufactured by Toray Thiokol Co., Ltd.
-282 can be used.

In the polysulfide ether polymer, the polyether moiety of (1) and the structural unit of (2) can have an arbitrary arrangement. A polysulfide bond moiety S _x of the polysulfide polyether polymers, polyether moiety - (R ¹ O) _n - molar ratio of 1 / 1-1
/ 5, particularly 1.0 / 2.0 to 1.0 / 3.0,
It is preferable from the viewpoint of the physical properties of the composition. Also, a polysulfide bond moiety S _x, polyether moiety - (R ¹ O) _n -
Including, (1) (2) percentage of each part, - (R ¹ O) _n - component 2 to 95 _{wt% - (C 2 H 4 OCH} 2 OC 2 H 4) - component 3 to 70 _{wt% - (CH 2 CH (OH} ) CH 2) - that component is 1 to 50% by weight polysulfide bond S _x is 1 to 60 wt%, weather resistance, from the viewpoint of compatibility with the plasticizer.

The number average molecular weight of the polysulfide ether polymer is from 600 to 200,000, preferably 8
00 to 50,000. If it is less than 600, the resulting curable composition of the present invention becomes too hard, which is not preferable. If it exceeds 200,000, the viscosity increases, which is not preferable.

As a method for producing the polysulfide ether polymer, for example, the following method can be exemplified. Having a mercapto group at both ends and having the formula (2)
A polysulfide polymer containing 1 to 50 structural units represented by (a) and having 1 to 5, preferably 2 thiol groups for each structural unit; and formulas (1) and (2) (b) A polyether polymer having a thiol group represented by the formula (3) or (e) at a molecular terminal; polysulfide polymer / polyether polymer = 95/5
The reaction is carried out at a weight ratio of 5/95, preferably 90/10 to 10/90. This is because if it is in this range, the obtained polysulfide ether polymer has good weather resistance and good compatibility with the plasticizer. The molecular weight of the polysulfide polymer is 100 to 200,000, preferably 400
~ 50,000. The molecular weight of the polyether polymer is preferably from 400 to 10,000 from the viewpoints of compatibility with the plasticizer and handleability. The weight ratio of the sulfur content / mercaptan content in the polyether polymer is preferably 1.06 or more from the viewpoint of compatibility between the polysulfide polymer and the polyether polymer. The reaction between the polysulfide polymer and the polyether polymer is 3
0-150 ° C, preferably 50-120 ° C, 2-48
The stirring is performed for a period of time, preferably for 4 to 10 hours.
In this reaction, the acid was added to 100 parts by weight of the reactant,
0.01 to 10 parts by weight, if necessary, may be added by dissolving in water, a solvent or the like. This is because the generation of low-molecular-weight by-products is suppressed.

The urethane prepolymer having two or more isocyanate groups in the molecule is preferably an organic polyisocyanate compound and / or a urethane prepolymer obtained by reacting an active hydrogen-containing compound with a polyisocyanate compound. As the organic polyisocyanate compound, for example, 2,4-tolylene diisocyanate or 2,6-tolylene diisocyanate (T
DI), diphenylmethane-4,4-diisocyanate (MDI) and modified products thereof, 1,5-naphthalene diisocyanate (NDI), tolidine diisocyanate (TODI), hexamethylene diisocyanate (H
DI), isophorone diisocyanate (IPDI), xylylene diisocyanate (XDI) and the like.

Examples of the active hydrogen-containing compound include hydroxy polyester, polyvalent polyalkylene ether, hydroxyl-terminated polyurethane polymer, polyvalent polythioether,
Illustrating alkanes, including alkanes, alkenes and aliphatic thiols, aromatic, aliphatic and heterocyclic diamines, including polyacetals, aliphatic polyols, and alkylene thiols having two or more mercapto groups, and mixtures thereof. Can be.

As the urethane prepolymer, those obtained by reacting the active hydrogen-containing compound with the organic polyisocyanate compound under the condition of an excess of isocyanate compound can be used.

In the present invention, the above-mentioned polysulfide ether polymer and a urethane prepolymer having two or more isocyanate groups in one molecule are obtained by mixing the isocyanate groups in the urethane prepolymer with the thiol groups in the polysulfide ether polymer. It is blended so that the ratio (isocyanate group / thiol group) becomes 0.5 to 1.5. If it is less than 0.5, the composition does not have a sufficiently high molecular weight, which is not preferable. If it exceeds 1.5, the cured product becomes hard and brittle, which is not preferable.

The composition of the present invention comprises, in addition to the above compounds,
Plasticizers, oils, fillers, antioxidants, pigments, dispersants,
You may mix | blend a solvent, a vulcanization accelerator, etc.

As the plasticizer, specifically, dihexyl phthalate (DHP), dioctyl phthalate (DO)
P), dibutyl phthalate (DBP), dilauryl phthalate (DLP), butylbenzyl phthalate (BB
P) and other phthalates; dioctyl adipate,
Aliphatic dibasic acid esters such as isodecyl succinate and dibutyl sebacate; glycol esters such as diethylene glycol dibenzoate and pentaerythritol ester; aliphatic esters such as butyl oleate and methyl acetyl ricinoleate; tricresyl phosphate and phosphorus Polyester plasticizers of a dibasic acid and a dihydric alcohol such as phosphoric esters such as trioctyl acid, octyl diphenyl phosphate and the like are used. These plasticizers may be used alone or in combination of two or more.

It is preferable that balun is kneaded with a liquid component such as a plasticizer or oil and then kneaded with a polysulfide ether polymer. After blending and kneading a filler, a pigment and the like, the balun is wetted and kneaded to produce a curable resin composition. Further, the liquid component that is kneaded with the balun in advance may contain a solvent, and as the contained solvent, specifically,
Aromatic hydrocarbons such as benzene, toluene and xylene are preferred. As the oil, oil such as aroma oil is preferable.

The filler is used by being dispersed in a polymer in order to improve various properties of the polymer material, and is an organic substance or an inorganic substance having various shapes. As a general filler,
Carbon black, silica, calcium carbonate, clay,
Examples include titanium oxide, glass fiber, mica, graphite, and ferrite. As the filler used in the present invention, silica, calcium carbonate, titanium oxide and the like are preferable, and calcium carbonate is particularly preferable.

Antioxidants are organic compounds having the property of preventing or suppressing the action of oxygen on various autoxidizable substances under conditions such as light and heat. Radical chain inhibitors and peroxide decomposers Agents. Common antioxidants include butylhydroxytoluene (BHT),
Examples include phenol derivatives such as butylhydroxyanisole (BHA), aromatic amines such as diphenylamine and phenylenediamine, and phosphites such as triphenyl phosphite.

The pigment includes an inorganic pigment and an organic pigment.
As inorganic pigments, titanium dioxide, zinc oxide, ultramarine, metal oxides such as red iron, lithopone, lead, cadmium,
Examples include sulfides such as iron, cobalt, and aluminum, hydrochlorides, sulfates, and the like. Examples of the organic pigment include an azo pigment and a copper phthalocyanine pigment. The curable composition of the present invention hardly adheres dirt, and can be made into a white-based cured product without using a metal oxide as a curing agent as in a conventional polysulfide rubber. It is useful as a sealing material, and can be colored into a desired vivid color by a pigment. The dispersant refers to a substance that converts solids into fine particles and disperses them in a liquid, and includes sodium hexametaphosphate, condensed sodium naphthalenesulfonate, and a surfactant.

The vulcanization accelerator has the effect of accelerating the crosslinking reaction of the polysulfide ether polymer and increasing the curing stability after storage. Examples of the vulcanization accelerator include tetramethylthiuram disulfide, tetraethylthiuram disulfide, and the like.

In the method for producing the curable composition of the present invention, when kneading balun with a polysulfide ether polymer, a liquid component selected from a plasticizer, an oil and a solvent is preferably added to balun in advance, preferably in a weight ratio of 0.1. 1 to 7 are added, and more preferably, each component is sufficiently kneaded under reduced pressure or an inert atmosphere so that air is not entrained, and uniformly dispersed. The mixture with the polymer is kneaded with a polysulfide ether polymer, and then a urethane prepolymer having two or more isocyanate groups in one molecule is kneaded to obtain a composition.
The amount of the liquid component added to the balun is preferably 0.1 to 7 in terms of the weight ratio of the balun to the liquid component. Balun 1
On the other hand, if the liquid component is less than 0.1, the balun does not wet well, and the effects of preventing air entrapment during kneading and shortening the time are not seen. If it exceeds 7, the balun may be separated from the liquid component.
More preferably, it is 0.7 to 3. The plasticizer, oil, and solvent in the liquid component that is previously kneaded with the balun may be used alone, or may be used as a mixture of a plasticizer, an oil, and / or a solvent. Further, among these liquid components, a plasticizer is particularly preferable for kneading balun into the polysulfide ether polymer. As such a plasticizer, dihexyl phthalate (DHP) is particularly preferable among the plasticizers exemplified above. can do.
In the method for producing a curable composition of the present invention, by performing kneading as described above, kneading can be performed uniformly in a short time without involving air, the balun does not collapse, and the apparatus does not wear during kneading.

In the kneading method of the present invention, when the above-mentioned balun is wetted, the balun is coated with a liquid component and apparently bulky to sticky depending on the relationship between the amount of the balun and the amount of the above-mentioned liquid component. It may be in the form of a func- ular, or the above-mentioned micro hollow body may be dispersed in the above-mentioned liquid component to form a capillary which is sticky in appearance or a slurry which is sticky in appearance. In the case of a funicular shape, a high-speed spray type solid-liquid mixing device such as a flow jet mixer or a satan mixer is used. In order to form a capillary or slurry, a disper type device is used.

Which one of the above three wet states of the micro hollow body is selected depends on the viscosity of the polysulfide ether polymer kneaded with the fine hollow body. It is preferable to make a slurry using the liquid components of Nos. 7 to 7.

The step of kneading the balun coated with the above-mentioned liquid component obtained in the above-described manner and formed into a funicular form or a dispersed form into a capillary or slurry into an uncured polysulfide ether polymer includes the following steps. Do so. The polysulfide ether polymer is kneaded repeatedly every time a urethane prepolymer having two or more isocyanate groups in one molecule, a filler, a pigment, a plasticizer, an oil, a vulcanization accelerator, etc. are mixed, but the surface is wetted. Balun should be added as late as possible. This is because, by delaying the timing of adding the minute hollow body, the kneading time after the addition is shortened, and the collapse of the minute hollow body is reduced.

The wet state of the balun to be added is most effective when a slurry-like fine hollow body is added in that the amount of air entrained during kneading is reduced and dispersion during kneading is easy. Even when a minute hollow body in the form of a curl is added, the amount of air entrained during kneading is reduced due to the wet surface of the minute hollow body.

The curable composition of the present invention thus obtained has the following properties. The curable composition of the present invention,
Its physical properties are the same as those of the cured product of the curable composition used for the conventional sealing material, but the weight is reduced. The conventional polysulfide resin-based curable composition could only use a limited oxidizing agent, so that coloring by the oxidizing agent was unavoidable, and a white cured product could not be obtained. The product can be easily cured by a urethane prepolymer having two or more isocyanate groups in one molecule without using such an oxidizing agent, so that the product can be made white. A white sealing material can be made. Further, the composition of the present invention does not easily adhere to stains, can maintain an aesthetic appearance as compared with a conventional curable composition for a sealing material, and is more suitable as a sealing material.

The adhesive composition of the present invention is useful as a sealing material for building members.

[0034]

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples.

(Example 1) A main component such as a polysulfide ether polymer shown in Table 1 and a coloring material component were
The amounts shown in Table 1 were blended and kneaded for 1 hour with a planetary mixer (Dalton 5 L), and the mixture was mixed with balun (Matsumoto Microsphere L80GTi, average particle size 20 μm, true specific gravity 0.21) manufactured by Matsumoto Yushi-Seiyaku Co., Ltd. DHP for parts by weight
10 parts by weight of a slurry which was mixed and moistened at a ratio of 5 parts by weight was added, and kneaded with the above apparatus for 10 minutes. Next, the curing agent components shown in Table 1 were blended and kneaded with the above-mentioned apparatus for 10 minutes to obtain a curable composition.

Comparative Example 1 A curable composition was obtained in the same manner as in Example 1 except that balun was not added.

Comparative Example 2 A curable composition was obtained in the same manner as in Example 1 except that balun whose surface was not wetted by DHP was used. However, the addition of balun was extended for 10 minutes because sufficient kneading could not be performed in 10 minutes as in Example 1.

(Evaluation of Physical Properties) The curable composition thus obtained was subjected to the following test methods. (1) Tensile properties A type 2 test specimen of JIS A5758 (sealing material for building) was prepared from an aluminum plate, and was standardized for 7 days at 50 ± 2.
After curing at 7 ° C. for 7 days, the film was pulled at a speed of about 50 mm / min in a standard condition, and a 50% tensile stress [N / cm ² ], a maximum tensile stress [N / cm ² ] and a maximum elongation [%] were measured. Physical properties were evaluated. (2) Specific gravity The specific gravity was measured immediately after kneading in accordance with JIS A5758. (3) Measurement of crushed balun After kneading, the specific gravity of the uncured product was measured, and the balun% actually crushed by kneading was calculated from the calculated specific gravity and the measured specific gravity. (4) The compositions obtained in the examples were white and hardly stained. Table 1 shows the results.

[0039]

[Table 1]

The compounds used in the examples and comparative examples are as follows. Polysulfide ether polymer: Thiokol LP
-282, dihexyl phthalate manufactured by Toray Thiokol Co., Ltd .: DH manufactured by Daihachi Chemical Industry Co., Ltd.
P-xylene resin: manufactured by Mitsubishi Gas Chemical Company, Inc., Nicanol
LLL Precipitable calcium carbonate: manufactured by Takehara Chemical Industry Co., Ltd., Neolite SPT Heavy calcium carbonate: manufactured by Nitto Powder Chemical Co., Ltd., NCC
# 1010 Tetraethylthiuram disulfide: Ouchi Shinko Chemical Co., Ltd., Noxeller TET Oleyl alcohol: Shin Nippon Rika Co., Ltd., Angecor 90N Tris (tridecyl) phosphite: Johoku Chemical Co., Ltd., JP333E dibutyltin malate : SCA manufactured by Sankyoki Gosei Co., Ltd.
T-4A Polyoxystearylamine: Nippon Oil & Fats Co., Ltd., Nimeen S220 Titanium oxide coated plastic balun: Matsumoto Oil & Fats Co., Ltd., Matsumoto Microsphere L80GTi, average particle diameter 20 μ, true specific gravity 0.21 urethane prepolymer; Polyether-based urethane prepolymer NCO% = 4.05% Titanium oxide: manufactured by Ishihara Sangyo Co., Ltd., Taipaque R-5
50

[0041]

The curable composition of the present invention exhibits almost the same properties as the curable composition for a sealing material according to the conventional method in terms of both the 50% tensile stress, the maximum tensile stress and the maximum elongation. It is a white curable composition that has a reduced specific gravity, is light in weight, and hardly adheres dirt. Further, in the method of kneading the organic fine hollow body into the resin of the present invention, the ratio of crushed balun is low, and the kneading property of balun is good. The composition of the present invention is suitable as a sealing material.

Continued on the front page (51) Int.Cl. ⁶ Identification code FI C08K 9/02 C08K 9/02 C08L 27/08 C08L 27/08 33/20 33/20 81/04 81/04 C09K 3/10 C09K 3 / 10 D

Claims (7)

[Claims] 1. A polysulfide polyether polymer, a urethane prepolymer having two or more isocyanate groups in one molecule, and a hollow organic fine body coated on the surface; and two or more isocyanate groups in the molecule. Isocyanate groups in the urethane prepolymer having
A curable composition characterized in that the molar ratio (isocyanate group / thiol group) to thiol group in the polysulfide polyether polymer is 0.5 to 1.5. 2. The method according to claim 1, wherein the hollow organic fine particles are a vinylidene chloride resin, a copolymer of vinylidene chloride and acrylonitrile,
A copolymer of acrylonitrile and methacrylonitrile,
The composition according to claim 1, wherein the composition is formed from at least one selected from the group consisting of a terpolymer of vinylidene chloride, acrylonitrile, and divinylbenzene. 3. The surface of the hollow organic fine body is coated with a filler comprising at least one selected from the group consisting of calcium carbonate, surface-treated calcium carbonate, titanium oxide, silicon oxide, talc, clay and carbon black. The composition according to claim 1 or 2, wherein 4. The polysulfide ether polymer, wherein the weight ratio of the polysulfide bond to the polyether moiety is such that the polysulfide bond / polyether moiety = 1.
The composition according to any one of claims 1 to 3, wherein the composition is ６０60% by weight / 2 to 95% by weight. 5. The composition according to claim 1, further comprising at least one selected from the group consisting of a plasticizer, an oil, a filler, an antioxidant, a pigment, a dispersant and a solvent. Composition containing. 6. A sealing material comprising a composition comprising a polysulfide polyether polymer, a compound having two or more isocyanate groups in one molecule, and a surface-coated organic micro hollow body. 7. The method of mixing an organic micro hollow body with a polysulfide polyether polymer.
Wherein a liquid component comprising at least one selected from the group consisting of a plasticizer, an oil and a solvent is added in a weight ratio of 0.1 to 7 and mixed, and then mixed with a polysulfide polyether polymer. A method for kneading an organic micro hollow body into a polyether polymer.