JPH0635545B2 - Ion conductive polymer composition - Google Patents

Description

TECHNICAL FIELD The present invention relates to an ion conductive polymer composition, and more specifically, the present invention relates to an ion conductive polymer in which an electrolyte is dispersed in a crosslinked polymer compound. It relates to a composition.

<Prior Art> In recent years, electronic components are required to have high performance, small size and thinness, and high reliability. Therefore, it is necessary to improve reliability of materials used for those electronic components. Various materials have been developed to meet the same requirements as ion conductive materials applied to batteries, display elements and the like.

Conventionally, as such an ion conductive material, (i) an electrolyte solution obtained by dissolving an electrolyte in water, an aqueous solvent or an organic solvent; (ii) beta-alumina (β-Al ₂ O ₃ ), lithium nitride (Li ₃ N), lithium iodide-alumina (LiI-
Al ₂ O ₃ ), a solid electrolyte material made of an inorganic material such as silver rubidium iodide; and the like are known.

<Problems to be Solved by the Invention> However, since the electrolyte solution of (i) uses water or an organic solvent, there is always a problem of liquid leakage to the outside of electronic components, and It may cause deterioration of the performance of parts and damage of peripheral parts. In order to improve this problem, it is known that a polymer substance is added to the electrolyte solution to form a gel, but even this material cannot completely eliminate the risk of liquid leakage.

On the other hand, the solid electrolyte of (ii) is a material that can be applied to electronic components with high reliability and long life, and can be made small and lightweight, but at present, a material showing sufficient conductivity at room temperature is obtained. It has not been widely applied.

In view of the above situation, attention has been paid to a polymer ion-conductive material which is excellent in workability and has high conductivity. In order to obtain high conductivity in a polymer ion-conductive material, it is necessary that the electrolyte contained therein has a large ability to dissociate into an ion and that the ion easily moves in the polymer. For this reason, a polyether-based material having a large ionic dissociation ability has been studied as the polymer ion conductive material, but there is a limitation in terms of molecular mobility, and there is a drawback that the conductivity does not improve so much. In order to improve this drawback, a polymer ion conductive material in which siloxane and polyether having extremely high molecular mobility are combined has been proposed.

As such an example, for example, (1) a copolymer of siloxane and polyethylene oxide (the following general formula-I) is crosslinked and solidified, An ion conductive material containing metal ions (Japanese Patent Laid-Open No. 217263/1985 and Japanese Patent Laid-Open No. 60-21 / 1985).
6463); (2) Polysiloxane having polyethylene oxide in the side chain (the following general formula-II) is crosslinked and solidified with a bifunctional isocyanate, Ion conductive material containing metal ions [Solid State Ionis
cs) 15 (1985), 233-240]] and the like.

However, in the above (1), it is contained in the main chain-
Since the Si-OC- bond is easily broken by the presence of water,
Handling as a material is extremely inconvenient. Also, above (2)
However, since the side chain polyethylene oxide group is used for cross-linking, the mobility of the polyethylene oxide part is reduced, and the electrical conductivity at room temperature is at most on the order of 10 ^-6 S / cm. .

<Purpose> The present invention has been made in view of the above problems, and has a high ionic conductivity due to a crosslinked polysiloxane crosslinked product without impairing the mobility of a side chain oxyalkylene group or polyoxyalkylene group. It aims at providing the ion conductive polymer composition which has.

<Structure> The ion conductive polymer composition of the present invention made to achieve the above object is a crosslinked cured product of a polysiloxane represented by the following general formula and a periodic table group I or II. And an electrolyte composed of a group metal ion.

[In the formula, R ¹ , R ² , R ³ , R ¹¹ and R ¹¹ ′ are the same or different and each represents an alkyl group, an alkoxyl group or an aryl group, and R ⁴ is an alkylene group, an oxyalkylene group or an oxycarbonylalkylene group. R ⁵ represents a hydrogen atom or an alkyl group, Y represents an oxyalkylene group or a polyoxyalkylene group, and Z represents a group having an alkylene group, an oxyalkylene group, a polyoxyalkylene group or a polysiloxane structure at both ends. Which represents an organic group consisting of any of the following, 1 and t are positive integers, m is 0 or a positive integer, and l, t, and m have the following relationships.

1 / (l + m + t) ≧ 0.1] In the above structure, the structure of the portion other than the crosslinked portion of the crosslinked cured polysiloxane is represented by the following general formula-III.

(In the formula, R ¹ , R ² , R ³ , R ⁴ , R ⁵ , Y, 1, and m are the same as above.) In the above general formula-III, R ¹ and R capable of bonding to a silicon atom. ² and R ³ include methyl, ethyl,
Examples thereof include alkyl groups such as propyl, butyl, pentyl, hexyl and octyl, alkoxy groups such as methoxy, ethoxy, propoxy, butoxy, hexyloxy and octyloxy, and aryl groups such as phenyl and naphthyl.

The oxyalkylene group or polyoxyalkylene group represented by the group Y is, for example, [In the formula, p means a positive integer. ] Etc. can be illustrated.

In addition, R ⁴ which is a chemical bonding group connecting the silicon atom and the group Y
For example, -CH ₂ -CH ₂ -O- -CH ₂ -CH ₂ -CH ₂ -O- -CH ₂ -CH ₂ COO- -CH ₂ -CH ₂ CO- -CH ₂ -CH (CH ₃ ) COO- can be exemplified.

Examples of R ⁵ which is an organic group capable of binding to the group Y include, for example,
Examples thereof include a hydrogen atom and the above alkyl groups.

Next, the structure of the crosslinked portion of the crosslinked cured polysiloxane of the present invention is represented by the following general formula-VI.

[In the formula, R ¹¹ and R ¹¹ ′ represent an organic group capable of bonding to a silicon atom, and Z represents a cross-linking group. Examples of R ¹¹ and R ¹¹ ′, which are organic groups capable of binding to a silicon atom, include the same groups as those exemplified for R ¹ .

Examples of Z, which is a cross-linking group, include an organic group whose both terminals are either an alkylene group, an oxyalkylene group, a polyoxyalkylene group, or a group having a polysiloxane structure. These groups may include an imino group, a phenylene group, a carbonyl group and the like. Further group Z
Specifically, [In formula, q, r, and s mean a positive integer, respectively. ] Etc. can be illustrated.

The crosslinked cured polysiloxane of the present invention can be synthesized by various methods. For example, Synthesis Method-1 After the addition reaction of an organic compound having an unsaturated bond and an oxyalkylene group or a polyoxyalkylene group with a polysiloxane having a silicon hydride (first step), the functionality of the side chain introduced A method of crosslinking a part of the side chain with a crosslinking agent containing two or more reactive groups capable of reacting with the functional group depending on the type of the group (second step).

The reaction of the first step is usually performed in a solvent. As the solvent, any solvent can be used as long as it does not adversely affect this reaction, and for example, benzene, toluene,
Examples thereof include aromatic hydrocarbons such as xylene, halogenated hydrocarbons such as methylene chloride, chloroform, carbon tetrachloride and tetrachloroethane, and ethers such as tetrahydrofuran and dioxane.

This reaction is preferably carried out in the presence of a catalyst. As the catalyst, chloroplatinic acid is preferable, but other conventional catalysts for hydrosilylation reaction, for example, Group VIII transition metal complex of the periodic table, basic compounds and the like can also be used. Further, it is desirable to add a polymerization inhibitor such as hydroquinone in order to prevent the polymerization of the unsaturated compound as the starting material.

The reaction temperature is not particularly limited, but it is usually performed at room temperature or under heating.

The reaction in the second step is carried out by reacting the siloxane polymer obtained in the first step with the crosslinking agent in the presence or absence of a solvent. Examples of the solvent used here include the same solvents as those exemplified in the first step.

The cross-linking agent is appropriately selected depending on the kind of the functional group on the side chain introduced into the polysiloxane. For example, an organic group having an oxyalkylene or polyoxyalkylene group in which the end of the introduced side chain is a hydroxyl group. In the case of, as the cross-linking agent, for example, an isocyanate group, a carboxy group,
Compounds containing two or more functional groups such as carboxylic acid anhydride, carboxylic acid halide group, epoxy group, hydroxyl group, halide group, vinyl group, alkylolamide group, silanol group and alkoxysilane group, or boric acid, orthophosphoric acid diester , Ketal compounds and the like. Regarding the relationship between the functional group on the side chain and the crosslinking agent that can be used,
It is described in detail in [Crosslinking Agent Handbook] (published by Taisei Co., Ltd.), which can be referred to.

The degree of cross-linking is adjusted by the method of adjusting the amount of the cross-linking agent, and in the first step, two types of side chains of a type that reacts with the cross-linking agent and a side chain that does not react are introduced as side chains,
Examples thereof include a method of adjusting the degree of crosslinking by appropriately adjusting the introduction amount ratio.

The reaction temperature of this crosslinking reaction is not particularly limited, but it is usually performed under cooling or heating. Further, it is preferable to add a basic substance such as triethylamine or pyridine depending on the kind of the crosslinking agent.

Synthetic method-2 Organic compound having unsaturated bond and oxyalkylene group or polyoxyalkylene group and at least 2
A method of performing an addition reaction between an organic compound having one unsaturated bond and a polysiloxane having silicon hydride, and simultaneously introducing an oxyalkylene group or an organic group having a polyoxyalkylene group into a side chain and performing a crosslinking reaction.

This reaction can be carried out in substantially the same manner as the reaction of the first step of the synthesis method-1, and the solvent, catalyst, reaction temperature and the like used are the same as those described in the first step of the synthesis method-1. Can be referred to.

Synthetic Method-3 After carrying out an addition reaction between a polysiloxane having a silicon hydride and an organic compound having an unsaturated bond and an oxyalkylene group or a polyoxyalkylene group in an amount smaller than the equivalent amount of the silicon hydride group ( 1 step), hydrolyzing the silicon hydride group in the obtained polymer (2nd step),
A method of crosslinking by ≡Si-O-Si≡ bond.

The first step of this reaction can be carried out in substantially the same manner as the reaction of the first step of the above-mentioned synthesis method-1, and the solvent, catalyst, reaction temperature and the like used are the same as those of the first step of the synthesis method-1. See the description given in.

The reaction in the second step can be carried out by heating the polymer in the presence of water, but can also be carried out by heating the polymer formed into a film or the like in the atmosphere.

Synthetic Method-4 A method of irradiating the polysiloxane having a side chain with an organic group having an oxyalkylene group or a polyoxyalkylene group, obtained in the first step of the above-mentioned Synthetic Method-1, to radiate and crosslink.

The radiation used in this reaction includes electron beams, X-rays,
Gamma rays and the like can be exemplified, but electron beams are preferable. The irradiation dose is not particularly limited, but is usually about 1 to 50 Mrad.

The crosslinked polysiloxane cured products obtained by the above-mentioned synthesis methods-1 and 2 have a structure represented by the above general formula. In this general formula, the value of l is preferably l / (l + m + t) ≧ 0.1.

As the electrolyte composed of a metal ion of Group I or Group II of the periodic table used in the present invention, an electrolyte conventionally used as an electrolyte of an ion-conductive polymer material can be used. Lithium, lithium thiocyanate, lithium borofluoride, lithium trifluoromethanesulfonate, lithium salts, sodium trifluoroacetate, sodium borofluoride, sodium salts, potassium trifluoromethanesulfonate, potassium thiocyanate, potassium salts, barium iodide Examples of the electrolyte include group I or group II metal ions such as barium salts.

The ion conductive polymer composition of the present invention is produced by adding the above electrolyte before or after the crosslinking reaction of the polysiloxane. Further, it is formed into a film or the like, if desired.

Furthermore, various compounds can be added to the ion conductive polymer composition. For example, in order to lower the glass transition point, it is possible to add a small amount of an organic solvent such as methanol, tetrahydrofuran, dioxane or polyethylene glycol as a plasticizer. Further, when demands on mechanical properties are strict, a reinforcing agent such as silica can be added.

<Operation> The present invention has the above-mentioned constitution, and is composed of a polysiloxane skeleton which lowers the glass transition point while introducing a side chain having an oxyalkylene group or a polyoxyalkylene group for increasing the solubility of the electrolyte, The dissociation degree of the electrolyte can be increased and the mobility of ions can be increased.

In particular, among the side chains having an oxyalkylene group or a polyoxyalkylene group, there are many side chains that are not used for crosslinking, so the mobility of the side chains is large, and the above effect can be further enhanced. .

<Example> Hereinafter, the present invention will be described in more detail with reference to Examples.

Example 1 1.58 g of compound (1) shown below, polysiloxane
(2) 0.98 g and 0.02 g of hydroquinone were dissolved in 50 ml of toluene, and 0.5 ml of an isopropyl alcohol solution of chloroplatinic acid of 3.8 × 10 ⁻³ mol / l was added thereto, and then at 24 ° C. at 24 ° C. Reacted for hours. The polymer was recovered by vacuum drying. ¹ H-NMR of the obtained polymer
The spectrum is shown in the attached drawing. As is apparent from the attached drawings, the peak derived from the vinyl group of compound (1) disappeared, and the peak of the methylene group showing the bond between the silicon atom and the oxyethylene group appeared at δ = 0.5 to 2.0 ppm. did.

1.0 g of the obtained polymer and 0.15 of lithium perchlorate.
After dissolving 6 g in tetrahydrofuran, it was dried on a Petri dish made of Teflon. To this, 1 electron beam of 3 MeV
Irradiation with 0 Mrad gave a film with a thickness of 1 mm. further,
This was dried under reduced pressure at 90 ° C. for 3 days, and the conductivity at 25 ° C. was measured using platinum as an electrode.
A value of ^-5 S / cm was obtained.

Compound _{(1): CH 2 = CH} -CH 2 -O-CH 2 -CH 2 -O-CH 3 Compound (2): (W = 300,000) Example 2 0.7 g of the above compound (2) and 1.77 of the following compound (3)
g, compound (4) 0.33 g and hydroquinone 0.0
The 2g was dissolved in toluene 32g, here 3.8 × 10 ^-3
After adding 0.5 ml of a mol / l solution of chloroplatinic acid in isopropyl alcohol, the mixture was reacted at 50 ° C. for 24 hours. 12.7 g of this reaction solution, 0.073 g of lithium perchlorate
Tetrahydrofuran solution was added and mixed thoroughly,
Dry under reduced pressure and vacuum dry at 90 ° C for 3 days to obtain a thickness of 1
A film of mm was obtained. When the conductivity of this film at 25 ° C. was measured, it was 1.6 × 10 ⁻⁵ S / cm.

Compound (3): Compound (4): Example 3 0.9 g of the compound (2), 0.43 g of the compound (4), and the compound
(1) 1.305 g of hydroquinone and 0.20 g of hydroquinone were dissolved in 32 g of toluene, and 0.5 ml of 3.8 × 10 ⁻³ mol / l chloroplatinic acid / isopropyl alcohol solution was added.
The reaction was carried out at 0 ° C for 24 hours. 13.43 g of this solution and a tetrahydrofuran solution in which 0.111 g of lithium perchlorate was dissolved were mixed and dried under reduced pressure. Then, vacuum drying was performed at 90 ° C. for 24 hours to obtain a film. When the conductivity at 30 ° C. was measured, it was 1.25 × 10 ⁻⁵ S / cm.

Example 4 0.98 g of the compound (2), 0.948 g of the compound (1) and 0.01 g of hydroquinone were dissolved in 16 g of toluene, and a 3.8 × 10 ⁻³ mol / l chloroplatinic acid / isopropyl alcohol solution was added. After adding 0.5 ml and subjecting it to reaction at 50 ° C. for 24 hours, the polymer was recovered by drying under reduced pressure. 1 g of this polymer and lithium perchlorate were dissolved in a tetrahydrofuran solution and dried at a temperature of 80 ° C.
A film was obtained by heating for a period of time. When this film was vacuum dried at 90 ° C., an ion conductive film was obtained.

Example 5 0.23 g of the compound (4), 0.69 g of the compound (1), 1.0 g of the following compound (5) and 0.02 g of hydroquinone were dissolved in 32 g of toluene to obtain 3.8 × 10 ⁻³ mol / l. Add 0.5 ml of chloroplatinic acid / isopropyl alcohol solution,
The reaction was carried out at 50 ° C. for 24 hours. After mixing 8.83 g of this solution with tetrahydrofuran in which lithium perchlorate was dissolved, it was dried under reduced pressure and vacuum dried at 90 ° C. for 3 days to obtain an ion conductive film.

Compound (5): (W = 100,000, m: n = 1: 1) Example 6 1.0 g of the compound (2), 0.51 g of the compound (4), 2.51 g of the following compound (6) and 0.02 g of hydroquinone were added to 32 g of toluene. Dissolve and add 0.5 ml of 3.8 × 10 ⁻³ mol / l chloroplatinic acid / isopropyl alcohol solution,
The reaction was carried out at 50 ° C. for 24 hours. 8.96 g of this solution and tetrahydrofuran in which lithium perchlorate was dissolved were mixed, dried under reduced pressure, and vacuum dried at 90 ° C. for 3 days to obtain an ion conductive film.

Compound (6): Example 7 1.0 g of the compound (2), 3.3 g of the following compound (7), 1.7 g of the compound (8) and 0.04 g of hydroquinone were dissolved in 50 g of toluene, and 2.1 mg of chloroplatinic acid was added. 8
The reaction was allowed to proceed for 6 hours at 0 ° C. 9.3 g of this solution and tetrahydrofuran in which lithium perchlorate was dissolved were mixed, dried under reduced pressure, and vacuum dried at 90 ° C. for 3 days to obtain an ion conductive film.

Compound (7): (W = 300) Compound (8): (W = 350) Example 8 0.90 g of the compound (2), 1.30 g of the compound (1), 0.32 g of the following compound (9) and 0.02 g of hydroquinone.
Was dissolved in 32 g of toluene, 0.5 ml of a 3.8 × 10 ⁻³ mol / l chloroplatinic acid / isopropyl alcohol solution was added, and the mixture was reacted at 50 ° C. for 24 hours. This solution 6.85
g and tetrahydrofuran in which lithium perchlorate was dissolved were mixed, dried under reduced pressure, and vacuum dried at 90 ° C. for 3 days to obtain an ion conductive film.

Compound (9): Example 9 0.78 g of the above compound (1) and the following compound (10) 1.135
g and 0.04 g of hydroquinone were dissolved in 32 g of toluene, 0.5 ml of 3.8 × 10 ⁻³ mol / l chloroplatinic acid / isopropyl alcohol solution was added, and the mixture was reacted at 50 ° C. for 12 hours, then the following compound (11) 1.0 g was added and further reacted at 50 ° C. for 24 hours. This solution was used in Example 5.
When the same treatment as in (1) was performed, an ion conductive film was obtained.

Compound (10): Compound (11): (W = 5,300, m: n = 7: 3) Example 10 0.62 g of the compound (1), 0.91 g of the compound (10) and 0.02 g of hydroquinone were dissolved in 16 g of toluene to obtain 3.8 × 10 ^{−. After} adding 0.5 ml of ³ mol / l chloroplatinic acid / isopropyl alcohol solution and reacting at 50 ° C. for 12 hours, 1.0 g of the compound (11) was added and further reacted at 50 ° C. for 24 hours. [Referred to as reaction liquid (A)].

On the other hand, 0.15 g of the compound (1), 0.1 g of the compound (10) and 0.01 g of hydroquinone were dissolved in 16 g of toluene, and a 3.8 × 10 ⁻³ mol / l chloroplatinic acid / isopropyl alcohol solution was added. 5 ml was added and reacted at 50 ° C. for 24 hours [referred to as reaction solution (B)].

After mixing the reaction solution (A) and the reaction solution (B), 50
The reaction was performed at 24 ° C. for 24 hours. When this solution was treated in the same manner as in Example 5, an ion conductive film was obtained.

Example 11 1.30 g of the above compound (2) and the following compound (12) 2.14
g, 0.195 g of divinylbenzene and 0.02 g of hydroquinone were dissolved in 16 g of toluene, and 3.8 x 10
0.5 ml of ^-3 mol / l chloroplatinic acid / isopropyl alcohol solution was added, and the mixture was reacted at 50 ° C. for 12 hours. When this solution was treated in the same manner as in Example 5, an ion conductive film was obtained.

Compound (12): CH ₂ ═CH CH ₂ OCH ₂ —CH ₂ OC ₆ H ₅ Example 12 0.50 g of the above compound (2), the following compound (13) 4.99
g, compound (14) 0.155 g and hydroquinone 0.
02 g was dissolved in 32 g of toluene, and a solution of 3.8 × 10 ⁻³ mol / l chloroplatinic acid / isopropyl alcohol 0.5 was added.
ml was added and the reaction was carried out at 50 ° C. for 48 hours. When this solution was treated in the same manner as in Example 5, an ion conductive film was obtained.

Compound (13): (N≈10) Compound (14): Example 13 0.90 g of the compound (2), 1.39 g of the compound (1), 0.153 g of ethylene glycol monoallyl ether and 0.04 g of hydroquinone were dissolved in 32 g of toluene to give 3.8 × 10 ⁻³ mol / mol. 1 ml of chloroplatinic acid / isopropyl alcohol solution (1 ml) was mixed, and the mixture was mixed at 50 ° C for 24 hours.
Reacted for hours. Tetrahydrofuran furan in which lithium perchlorate was dissolved was mixed with this solution and dried in a vacuum, and then hexamethylene diisocyanate was added to 0.2 in a nitrogen atmosphere.
4 g and a few drops of dibutyltin dilaurate were added, mixed well and allowed to stand for one day. 90 ° C to further complete the reaction
After vacuum drying for 2 days, an ion conductive film was obtained.

Example 14 0.90 g of the compound (2), 1.39 g of the compound (1), 0.25 g of the following compound (15) and 0.04 g of hydroquinone
Was dissolved in 32 g of toluene to give 3.8 × 10 ⁻³ mol / l.
0.5 ml of chloroplatinic acid / isopropyl alcohol solution
After mixing, the mixture was reacted at 50 ° C. for 24 hours. Tetrahydrofuran in which lithium perchlorate was dissolved was mixed with this solution and vacuum dried, and then 0.1 g of ethylenediamine was added.
Were mixed and reacted at 60 ° C. for 5 hours to obtain an ion conductive film.

Compound _{(15): CH 2 = CH} -CH 2 OCH 2 -CH 2 OCH 2 -CH 2 Cl Example 15 the Compound (2) 0.90 g, Compound (1) 1.39 g, compound (15) 1.05 g And 0.02 g of hydroquinone were dissolved in 16 g of toluene, and 0.5 ml of a 3.8 × 10 ⁻³ mol / l chloroplatinic acid / isopropyl alcohol solution was mixed.
The reaction was carried out at 0 ° C for 24 hours. When this solution was treated in the same manner as in Example 5, an ion conductive film was obtained.

<Effect> As described above, according to the ion conductive polymer composition of the present invention, an ion conductive material having high ion conductivity at room temperature and good moldability for a film or the like can be obtained, and further solid Therefore, there is no fear of liquid leakage or the like when applied to electronic parts and the like, so that there is a unique effect that a highly reliable product can be obtained.

[Brief description of drawings]

The accompanying drawings show ¹ H-NM of the polymer obtained in Example 1.
It is a figure which shows R spectrum.

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Shinichiro Niwa 1-3-3 Shimaya, Konohana-ku, Osaka City, Osaka Prefecture Sumitomo Electric Industries, Ltd. Osaka Works (72) Inventor Akira Nishimura 1 Shimaya, Konohana-ku, Osaka City, Osaka Prefecture 1st-3rd Sumitomo Electric Industries, Ltd. Osaka Works (72) Inventor Yutaka Shibata 1-3-3 Shimaya, Konohana-ku, Osaka City, Osaka Prefecture Sumitomo Electric Industries Ltd. Osaka Works

Claims (5)

[Claims] 1. An ion conductive polymer comprising a crosslinked cured product of a polysiloxane represented by the following general formula and an electrolyte composed of a metal ion of Group I or II of the periodic table. Composition. [In the formula, R ¹ , R ² , R ³ , R ¹¹ and R ¹¹ ′ are the same or different and each represents an alkyl group, an alkoxyl group or an aryl group, and R ⁴ is an alkylene group, an oxyalkylene group or an oxycarbonylalkylene group. R ⁵ represents a hydrogen atom or an alkyl group, Y represents an oxyalkylene group or a polyoxyalkylene group, and Z represents a group having an alkylene group, an oxyalkylene group, a polyoxyalkylene group or a polysiloxane structure at both ends. Which represents an organic group consisting of any of the following, 1 and t are positive integers, m is 0 or a positive integer, and l, t, and m have the following relationships. l / (l + m + t) ≧ 0.1] 2. The ion conductive polymer composition according to claim 1, wherein the group Z contains an oxyalkylene group or a polyoxyalkylene group. 3. The ionic conductivity according to claim 1 or 2, wherein the oxyalkylene group or polyoxyalkylene group is (-CH ₂ -CH ₂ -O-) _n (n is a positive integer). Polymer composition. 4. A crosslinked portion containing the group Z formed by an addition reaction of an organic compound having at least two unsaturated groups and a silicon hydride group (≡SiH) in the polysiloxane main chain. The ion conductive polymer composition according to claim 1, which is 5. The ion conductive polymer composition according to claim 1, wherein the crosslinked portion containing the group Z is formed by electron beam irradiation.