JP4826563B2 - Modified conductive polymer dispersion, method for producing the same, and conductive member using the same - Google Patents

Modified conductive polymer dispersion, method for producing the same, and conductive member using the same Download PDF

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JP4826563B2
JP4826563B2 JP2007228100A JP2007228100A JP4826563B2 JP 4826563 B2 JP4826563 B2 JP 4826563B2 JP 2007228100 A JP2007228100 A JP 2007228100A JP 2007228100 A JP2007228100 A JP 2007228100A JP 4826563 B2 JP4826563 B2 JP 4826563B2
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司 丸山
優子 関根
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Yokohama Rubber Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a modified electroconductive polymer dispersion prepared by the modification of an electroconductive polymer in an electroconductive state by using radical species and to provide an organic polymer composition and an electroconductive member, which are produced by using the same, having small variation in electric resistance and low environmental dependence and showing stable electrical characteristics. <P>SOLUTION: An organic solvent dispersion of an electroconductive polymer is obtained by chemical oxidative polymerization of monomers of aniline, thiophene, pyrrole, or a derivative thereof in the presence of an oxidizing agent and a dopant in a mixed solvent containing an organic solvent and water. The modified electroconductive polymer dispersion is prepared by the chemical treatment of the thus prepared organic solvent dispersion by using radical species that is generated from at least one compound selected from among an azo compound, a thiol compound, a disulfide compound, and a peroxo compound via heating or photoirradiation. The production method for the modified electroconductive polymer dispersion and the electroconductive member produced by using the same are also provided herein. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

本発明は、ラジカル種で化学処理された変性導電性高分子分散液及びその製造方法並びにそれを含む有機重合体組成物並びにその組成物を用いた導電性部材に関する。この導電性部材は、複写機、カラープリンター等の電子写真記録装置の転写ロール、帯電ローラ、転写ベルト等の導電性部材として有用である。   The present invention relates to a modified conductive polymer dispersion chemically treated with radical species, a production method thereof, an organic polymer composition containing the same, and a conductive member using the composition. This conductive member is useful as a conductive member for transfer rolls, charging rollers, transfer belts and the like of electrophotographic recording apparatuses such as copying machines and color printers.

有機重合体に導電性を付与することを目的として、有機重合体に導電剤が配合されている。そのような導電剤としては、カーボンブラック、金属酸化物微粒子等の導電性フィラーが用いられている。カーボンブラック等の導電性フィラーを有機重合体(樹脂)中に分散させた有機重合体組成物では、導電性フィラーを有機重合体中に均一に分散させることが困難なため、有機重合体組成物の電気抵抗値を要求値に制御したり、組成物中で均質化したりすることが困難であった。一方、イオン導電剤やイオン導電性樹脂等の導電剤は、有機重合体中に均一に分散できるために、電気抵抗値のバラツキを抑えて均質化することは可能であるが、電気抵抗値を要求値に制御することが困難であるという欠点があり、また電気抵抗値が水分等の影響を受けやすく、高温高湿下で測定した抵抗値と低温低湿下で測定した抵抗値ではその値が2桁以上も異なり、環境依存性を示すという欠点があった。   For the purpose of imparting conductivity to the organic polymer, a conductive agent is blended in the organic polymer. As such a conductive agent, conductive fillers such as carbon black and metal oxide fine particles are used. In an organic polymer composition in which a conductive filler such as carbon black is dispersed in an organic polymer (resin), it is difficult to uniformly disperse the conductive filler in the organic polymer. It was difficult to control the electrical resistance value to the required value or to homogenize it in the composition. On the other hand, conductive agents such as ionic conductive agents and ionic conductive resins can be uniformly dispersed in the organic polymer, and thus can be homogenized while suppressing variations in electrical resistance values. There is a drawback that it is difficult to control to the required value, and the electrical resistance value is easily affected by moisture, etc., and the resistance value measured at high temperature and high humidity and the resistance value measured at low temperature and low humidity are There is a disadvantage that it differs by two digits or more and shows environmental dependency.

一方、導電性高分子を有機重合体に分散させたものも報告されている。導電性高分子を有機重合体に分散させる方法としては、有機重合体と導電性高分子を溶媒中で混合分散させる方法や有機重合体と導電性高分子を混練する方法が挙げられる。しかしながら、導電性高分子はドーピング状態(導電状態)では不融不溶であることから、脱ドーピング状態(非導電状態)の導電性高分子を有機重合体中に分散させた後、ドーパントによる導電化処理を行う必要があり、工程が煩雑である上に組成物を均質に導電化処理することが困難であり、電気抵抗値を制御することが難しい。また、導電状態の導電性高分子を有機重合体中に分散させた場合、有機重合体と導電性高分子との相溶性が必ずしも高くないために、導電性高分子が有機重合体中に均一に分散できないために、有機重合体組成物の電気抵抗値のバラツキが大きくなり、その抵抗値の制御が困難であるという問題もあった(特許文献1及び2参照)。   On the other hand, a conductive polymer dispersed in an organic polymer has also been reported. Examples of the method for dispersing the conductive polymer in the organic polymer include a method in which the organic polymer and the conductive polymer are mixed and dispersed in a solvent, and a method in which the organic polymer and the conductive polymer are kneaded. However, since the conductive polymer is infusible and insoluble in the doped state (conductive state), the conductive polymer in the dedoping state (non-conductive state) is dispersed in the organic polymer and then made conductive by the dopant. It is necessary to perform the treatment, the process is complicated, it is difficult to uniformly conduct the composition, and it is difficult to control the electric resistance value. In addition, when a conductive polymer in a conductive state is dispersed in an organic polymer, the compatibility between the organic polymer and the conductive polymer is not necessarily high, so the conductive polymer is uniform in the organic polymer. In other words, the dispersion of the electric resistance value of the organic polymer composition is large, and it is difficult to control the resistance value (see Patent Documents 1 and 2).

特開2004−277455号公報JP 2004-277455 A 特開2004−205617号公報JP 2004-205617 A

従って、本発明の目的は、ドーピング状態の導電性高分子を直接有機溶媒中で変性分散させてなる変性導電性高分子分散液並びにそれを有機重合体に配合した電気抵抗値のバラツキ及び環境依存性が小さく、安定な電気特性を示す有機重合体組成物及びそれを用いた導電性部材を提供することにある。   Accordingly, it is an object of the present invention to provide a modified conductive polymer dispersion obtained by directly modifying and dispersing a conductive polymer in a doped state in an organic solvent, as well as variations in electrical resistance and environmental dependence in which the organic polymer is blended. It is an object of the present invention to provide an organic polymer composition having a low property and exhibiting stable electric characteristics and a conductive member using the same.

本発明に従えば、有機溶媒及び水を含む混合溶媒中でアニリン、チオフェン、ピロール又はこれらの誘導体のモノマーを、酸化剤及びドーピング剤の存在下に、化学酸化重合して得られる導電性高分子の有機溶媒分散液をアゾ化合物、チオール化合物、ジスルフィド化合物及びペルオキソ化合物から選ばれた少なくとも1種の化合物から発生するラジカル種を用いて、加熱又は光照射下に、化学処理して得られる変性導電性高分子分散液並びにその製造方法及びそれを用いた導電性部材が提供される。   According to the present invention, a conductive polymer obtained by chemical oxidative polymerization of a monomer of aniline, thiophene, pyrrole or a derivative thereof in a mixed solvent containing an organic solvent and water in the presence of an oxidizing agent and a doping agent. Modified conductive conductivity obtained by subjecting an organic solvent dispersion liquid to chemical treatment under heating or light irradiation using radical species generated from at least one compound selected from azo compounds, thiol compounds, disulfide compounds and peroxo compounds A conductive polymer dispersion, a method for producing the same, and a conductive member using the same are provided.

本発明に従って導電性高分子をラジカル種で化学処理して変性することにより、導電性高分子を有機重合体中に均一に分散させた分散液を得ることができ、更にこれを用いて安定な電気特性を有する有機重合体組成物及び導電性部材を得ることができる。   According to the present invention, the conductive polymer is modified by chemical treatment with radical species, whereby a dispersion in which the conductive polymer is uniformly dispersed in the organic polymer can be obtained. An organic polymer composition and a conductive member having electrical characteristics can be obtained.

本発明に従ってラジカル種で化学処理される導電性高分子分散液(以下導電性高分子分散液)は、モノマーを酸化剤及びドーピング剤(ドーパント)共存下に、化学酸化重合することによって得られる。そのようなモノマーとしては、アニリン、チオフェン、ピロール及びこれらの誘導体を用いる。上記誘導体としては、アルキル基、アルケニル基、アルコキシ基、アルキルチオ基、アリール基、アリールオキシ基、アルキルアリール基、アリールアルキル基、アルコキシアルキル基を置換基として少なくとも1つ有する誘導体を例示できる。   A conductive polymer dispersion (hereinafter referred to as a conductive polymer dispersion) chemically treated with radical species according to the present invention is obtained by chemical oxidative polymerization of a monomer in the presence of an oxidizing agent and a doping agent (dopant). As such a monomer, aniline, thiophene, pyrrole and derivatives thereof are used. Examples of the derivatives include derivatives having at least one alkyl group, alkenyl group, alkoxy group, alkylthio group, aryl group, aryloxy group, alkylaryl group, arylalkyl group, or alkoxyalkyl group as a substituent.

上記酸化重合のための酸化剤としては、上記モノマーを重合し得うるものであれば、特に限定はなく、例えば過硫酸アンモニム、過硫酸、過硫酸ナトリウム、過硫酸カリウム等の過硫酸類、過酸化水素、塩化第二鉄、硫酸第二鉄、重クロム酸カリウム、過マンガン酸カリウム、過酸化水素−第一鉄塩等のレドックス開始剤等が好ましく用いられる。これら酸化剤は単独で使用しても2種以上併用してもよい。これら酸化剤の用いる量としては、上記モノマーを酸化重合し得うる量であれば特に限定はないが、モノマー1モルに対して好ましくは0.01〜10モル、より好ましくは0.1〜5モルである。   The oxidizing agent for the oxidative polymerization is not particularly limited as long as it can polymerize the monomer, and examples thereof include persulfates such as ammonium persulfate, persulfuric acid, sodium persulfate, potassium persulfate, and the like. Redox initiators such as hydrogen oxide, ferric chloride, ferric sulfate, potassium dichromate, potassium permanganate, and hydrogen peroxide-ferrous salt are preferably used. These oxidizing agents may be used alone or in combination of two or more. The amount of these oxidizing agents to be used is not particularly limited as long as it is an amount capable of oxidative polymerization of the above monomer, but is preferably 0.01 to 10 mol, more preferably 0.1 to 5 mol per mol of the monomer. Is a mole.

上記酸化重合の際に共存させるドーピング剤としては、従来から導電性高分子の酸化重合で使用しているドーピング剤であれば特に限定はなく、例えば塩酸、硫酸、硝酸、過塩素酸などの無機酸、ニトロ安息香酸、トリクロロ酢酸、スルホン酸等の有機酸を例示でき、単独で使用しても2種以上併用してもよい。好ましいドーピング剤としてはスルホン酸が例示でき、具体的には一つ又は複数のスルホン酸基を有する脂肪族、芳香族又は環状脂肪族スルホン酸及びこれらの塩であり、アルキルスルホン酸、アリールスルホン酸、アルキルアリールスルホン酸、α−オレフィンスルホン酸、高級脂肪酸エステルのスルホン酸、(ジ)アルキルスルホコハク酸、高級脂肪酸アミドのスルホン酸、カンファースルホン酸及びこれらの塩類を挙げることができる。また、スルホン酸基を有する高分子酸及びこれらの塩であり、ポリスチレンスルホン酸、ポリエチレンスルホン酸、ポリ(メタ)アクリルアミド−2−メチルプロパンスルホン酸、ポリイソプレンスルホン酸及びこれらの塩類も例示できる。これらのドーピング剤の使用量には特に限定はないが、上記モノマー1モル当り0.01〜5モル使用するのが好ましく、0.1〜3モル使用するのが更に好ましい。   The doping agent that coexists in the oxidative polymerization is not particularly limited as long as it is a doping agent that has been conventionally used in the oxidative polymerization of conductive polymers. For example, inorganic substances such as hydrochloric acid, sulfuric acid, nitric acid, and perchloric acid are used. Examples of the acid include organic acids such as acid, nitrobenzoic acid, trichloroacetic acid and sulfonic acid, which may be used alone or in combination of two or more. Examples of preferable doping agents include sulfonic acids, specifically, aliphatic, aromatic or cycloaliphatic sulfonic acids having one or a plurality of sulfonic acid groups and salts thereof, alkylsulfonic acids, arylsulfonic acids. , Alkylaryl sulfonic acid, α-olefin sulfonic acid, sulfonic acid of higher fatty acid ester, (di) alkyl sulfosuccinic acid, sulfonic acid of higher fatty acid amide, camphor sulfonic acid and salts thereof. Moreover, it is the polymeric acid which has a sulfonic acid group, and these salts, Polystyrene sulfonic acid, polyethylene sulfonic acid, poly (meth) acrylamide-2-methylpropane sulfonic acid, polyisoprene sulfonic acid, and these salts can also be illustrated. The amount of these doping agents used is not particularly limited, but it is preferably 0.01 to 5 mol, more preferably 0.1 to 3 mol, per 1 mol of the monomer.

本発明のラジカル種は、導電性高分子分散液中の導電性高分子を化学処理できるものであれば、特に限定されないが、下記化合物から加熱によって形成される。ラジカル種を形成する化合物としては、アゾ化合物、チオール化合物、ジスルフィド化合物、ペルオキソ化合物があげられる。ラジカル種を形成する化合物は単独で使用しても2種以上併用してもよい。アゾ化合物としては具体的には、2,2‘−アゾビスイソブチロニトリル、2,2’−アゾビス(4−メトキシ−2,4−ジメチルバレロニトリル)、2,2’−アゾビス(2,4−ジメチルバレロニトリル)、2、2‘−アゾビス{2−メチル−N−[1,1−ビス(ヒドロキシメチル)−2−ヒドロキシエチル]プロピオンアミド}、2、2‘−アゾビス〔2−メチル−N−(2−ヒドロキシエチル)−プロピオンアミド〕、2、2‘−アゾビス〔N−(2−プロペニル)−2−メチルプロピオンアミド〕、2、2‘−アゾビス〔N−ブチル−2−メチルプロピオンアミド〕、ジメチル2、2’−アゾビス(2−メチル−プロピオネート)、4,4’−アゾビス(4−シアノペンタン酸)等を例示できる。また、下記式(I)のアゾ基含有高分子化合物も例示できる。   The radical species of the present invention is not particularly limited as long as it can chemically treat the conductive polymer in the conductive polymer dispersion, but is formed from the following compound by heating. Examples of compounds that form radical species include azo compounds, thiol compounds, disulfide compounds, and peroxo compounds. The compounds that form radical species may be used alone or in combination of two or more. Specific examples of the azo compound include 2,2′-azobisisobutyronitrile, 2,2′-azobis (4-methoxy-2,4-dimethylvaleronitrile), 2,2′-azobis (2, 4-dimethylvaleronitrile), 2,2′-azobis {2-methyl-N- [1,1-bis (hydroxymethyl) -2-hydroxyethyl] propionamide}, 2,2′-azobis [2-methyl -N- (2-hydroxyethyl) -propionamide], 2,2'-azobis [N- (2-propenyl) -2-methylpropionamide], 2,2'-azobis [N-butyl-2-methyl Propionamide], dimethyl 2,2′-azobis (2-methyl-propionate), 4,4′-azobis (4-cyanopentanoic acid) and the like. Moreover, the azo group containing high molecular compound of following formula (I) can also be illustrated.

Figure 0004826563
Figure 0004826563

(式中、R1及びR2は、独立に、ヘテロ原子を含んでも良い2価の炭化水素基であり、置換基としてアルキル基、アルケニル基、アルコキシ基、アルキルチオ基、アリール基、ヒドロキシアルキル基、アルコキシカルボニル基、ホルミル基、シアノ基、カルボキシル基、水酸基等が結合していても良く、また、R3は、両端にNH又はOを有する基である。nは自然数を表す。) (In the formula, R 1 and R 2 are each independently a divalent hydrocarbon group which may contain a hetero atom, and an alkyl group, an alkenyl group, an alkoxy group, an alkylthio group, an aryl group, a hydroxyalkyl group as a substituent. , An alkoxycarbonyl group, a formyl group, a cyano group, a carboxyl group, a hydroxyl group, or the like may be bonded, and R 3 is a group having NH or O at both ends, and n represents a natural number.)

アゾ基含有高分子化合物の具体例としては、下記式(II)又は(III)が例示でき、和光純薬工業(株)から提供されているVPS−0501、VPS−1001、VPE−0201、VPE−0401、VPE−0601を用いることができる。VPS−0501及びVPS−1001は以下の構造のアゾ基含有高分子化合物であり、VPS−0501はポリジメチルシロキサン部分の分子量が約5000、VPS−1001はポリジメチルシロキサン部分の分子量が約10000である。   Specific examples of the azo group-containing polymer compound include the following formula (II) or (III), and VPS-0501, VPS-1001, VPE-0201, VPE provided by Wako Pure Chemical Industries, Ltd. -0401, VPE-0601 can be used. VPS-0501 and VPS-1001 are azo group-containing polymer compounds having the following structures. VPS-0501 has a polydimethylsiloxane moiety having a molecular weight of about 5000, and VPS-1001 has a polydimethylsiloxane moiety having a molecular weight of about 10,000. .

Figure 0004826563
Figure 0004826563

VPE−0201、VPE−0401、VPE−0601は以下の構造のアゾ基含有高分子化合物であり、VPE−0201はポリエチレンオキシド部分の分子量が約2000、VPE−0401はポリエチレンオキシド部分の分子量が約4000、VPE−0601はポリエチレンオキシド部分の分子量が約6000である。 VPE-0201, VPE-0401, and VPE-0601 are azo group-containing polymer compounds having the following structures: VPE-0201 has a polyethylene oxide moiety having a molecular weight of about 2000, and VPE-0401 has a polyethylene oxide moiety having a molecular weight of about 4000. VPE-0601 has a polyethylene oxide moiety having a molecular weight of about 6000.

Figure 0004826563
Figure 0004826563

チオール化合物としては、オクタンチオール、ドデカンチオール、メルカプトエタノール、メルカプトプロピオン酸、チオグリセロール、チオグリセロール、ベンゼンチオール、メルカプト安息香酸等を例示できる。   Examples of the thiol compound include octanethiol, dodecanethiol, mercaptoethanol, mercaptopropionic acid, thioglycerol, thioglycerol, benzenethiol, mercaptobenzoic acid, and the like.

ジスルフィド化合物としては、ジチオジエチル、ジチオジプロピル、ジチオジブチル、ジチオジエタノール、ジチオジプロパノール、ジチオジプロピオン酸、ジチオジプロピオン酸ジメチル、ジチオジフェニル、ジベンジルジスルフィド等を例示できる。   Examples of the disulfide compound include dithiodiethyl, dithiodipropyl, dithiodibutyl, dithiodiethanol, dithiodipropanol, dithiodipropionic acid, dimethyl dithiodipropionate, dithiodiphenyl, and dibenzyl disulfide.

ペルオキソ化合物としては、ベンゾイルパーオキサイド、ジクミルパーオキサイド、t−ブチルクミールパーオキサイド、キュメンハイドロパーオキサイド、アセチルパーオキサイド、プロピオニルパーオキサイド、ブチリルパーオキサイド等を挙げることができる。   Examples of the peroxo compound include benzoyl peroxide, dicumyl peroxide, t-butyl cumyl peroxide, cumene hydroperoxide, acetyl peroxide, propionyl peroxide, butyryl peroxide and the like.

本発明に従ってラジカル種により化学処理された変性導電性ポリアニリン(以下変性導電性高分子)を含む導電性高分子分散液は、以下の方法で得られる。   A conductive polymer dispersion containing a modified conductive polyaniline chemically treated with radical species according to the present invention (hereinafter referred to as a modified conductive polymer) is obtained by the following method.

前記本発明の方法で得られる導電性高分子が溶媒中に分散した導電性高分子分散液と前記ラジカル種を形成する化合物を20〜180℃で反応させる方法(この方法では、ラジカル種を形成する化合物は、導電性高分子分散液にそのまま添加しても、或いは溶媒に溶解及び/又は分散したものを添加してもよい)。   A method in which a conductive polymer dispersion obtained by dispersing the conductive polymer obtained in the method of the present invention in a solvent and a compound that forms the radical species are reacted at 20 to 180 ° C. (in this method, radical species are formed). The compound to be added may be added to the conductive polymer dispersion as it is, or may be added after being dissolved and / or dispersed in a solvent).

ここで言う分散は、溶媒中に導電性高分子の微粒子が分散している状態と導電性高分子が溶媒中に溶解している状態が混在していることをいう。   Dispersion here means that a state where fine particles of the conductive polymer are dispersed in the solvent and a state where the conductive polymer is dissolved in the solvent are mixed.

導電性高分子が分散している溶媒(即ち、前記本発明の導電性高分子分散液の製造方法に用いる反応溶媒)としては、導電性高分子を分散できる溶媒であれば特に限定はないが、例えばトルエン、キシレン等の芳香族炭化水素、ジエチレングリコールジアセテート、ジプロピレングリコールジブチレート、ヘキシレングリコールジアセテート、グリコールジアセテート等のグリコールエーテルエステル類、メチルエチルケトン、エチルブチルケトン、ジイソブチルケトン等のケトン類、酢酸エチル、プロピオン酸エチル等の脂肪酸エステル、N,N−ジメチルホルムアミド、N,N−ジメチルアセトアミド、N,N−ジエチルホルムアミド、N,N−ジエチルアセトアミド、N−メチル−2−ピロリドン、ジメチルスルホキシド、テトラメチレンスルホン、スルホラン、ヘキサメチルホスホリックトリアミド、水等を例示できる。上記溶媒は単独で使用しても2種以上を併用しても良い。ラジカル種を形成する化合物を溶解及び/又は分散させる溶媒としては、上記導電性高分子を分散させる溶媒として例示したものを用いることができる。   The solvent in which the conductive polymer is dispersed (that is, the reaction solvent used in the method for producing the conductive polymer dispersion of the present invention) is not particularly limited as long as the solvent can disperse the conductive polymer. For example, aromatic hydrocarbons such as toluene and xylene, glycol ether esters such as diethylene glycol diacetate, dipropylene glycol dibutyrate, hexylene glycol diacetate and glycol diacetate, and ketones such as methyl ethyl ketone, ethyl butyl ketone and diisobutyl ketone Fatty acid esters such as ethyl acetate, ethyl propionate, N, N-dimethylformamide, N, N-dimethylacetamide, N, N-diethylformamide, N, N-diethylacetamide, N-methyl-2-pyrrolidone, dimethyl sulfoxide , Tetramethylene sulfone Sulfolane, hexamethylphosphoric triamide, water and the like can be exemplified. The above solvents may be used alone or in combination of two or more. As the solvent for dissolving and / or dispersing the compound that forms radical species, those exemplified as the solvent for dispersing the conductive polymer can be used.

ラジカル種と導電性高分子分散液との反応は、加熱又は光照射下で行う。ラジカル種を形成する化合物は、導電性高分子分散液中の導電性高分子100重量部あたり0.01〜30重量部使用することが好ましく、0.05〜20重量部使用するのが更に好ましい。また、反応温度としては、20℃〜180℃であり、好ましくは40℃〜150℃である。   The reaction between the radical species and the conductive polymer dispersion is performed under heating or light irradiation. The compound that forms radical species is preferably used in an amount of 0.01 to 30 parts by weight, more preferably 0.05 to 20 parts by weight, per 100 parts by weight of the conductive polymer in the conductive polymer dispersion. . Moreover, as reaction temperature, it is 20 to 180 degreeC, Preferably it is 40 to 150 degreeC.

本発明の有機重合体組成物は、前記化学処理された導電性高分子分散液中の導電性高分子を有機重合体100重量部に対して、好ましくは0.05〜80重量部、更に好ましくは0.1〜60重量部配合する。この配合量が少な過ぎると有機重合体組成物の体積抵抗値が1014Ω・cm以上となってしまう恐れがあり、逆に多すぎると添加量に見合っただけの効果が得られない恐れがある。 In the organic polymer composition of the present invention, the conductive polymer in the chemically treated conductive polymer dispersion is preferably 0.05 to 80 parts by weight, more preferably 100 parts by weight of the organic polymer. Is blended in an amount of 0.1 to 60 parts by weight. If the amount is too small, the volume resistance value of the organic polymer composition may be 10 14 Ω · cm or more. Conversely, if the amount is too large, the effect corresponding to the amount added may not be obtained. is there.

本発明の有機重合体組成物に用いられる有機重合体には特に限定はなく、好ましい例としては、天然ゴム、イソプレンゴム、ニトリルゴム(例えばアクリロニトリル−ブタジエンゴム、アクリロニトリル−スチレン−ブタジエンゴム等)、水素化ニトリルゴム、ブタジエンゴム、スチレン−ブタジエンゴム、ブチルゴム、ハロゲン化ブチルゴム、エチレン−α−オレフィンゴム(例えばエチレン−プロピレンゴム、エチレン−プロプレン−非共役ジエンゴム、エチレン−ブテン−非共役ジエンゴム等)、ポリノルボルネンゴム、アクリルゴム、フッ素ゴム、シリコーンゴム、エチレン−酢酸ビニルゴム、エピクロロヒドリンゴム、エピクロロヒドリン−エチレンオキサイド共重合ゴム、塩素化ポリエチレンゴム、クロロプレンゴム、クロロスルホン化ポリエチレンゴム、フッ素化ゴム、ポリウレタンゴム等のゴム、ポリエチレン、ポリプロピレン等のポリオレフィン樹脂、ポリエチレンテレフタレート、ポリエチレンナフタレート、ポリブチレンテレフタレート等のポリエステル樹脂、ナイロン6やナイロン6,6等のポリアミド樹脂、ビスフェノールA型エポキシ樹脂、ノボラック型エポキシ樹脂等のエポキシ樹脂、ポリアミドイミド、ポリアミック酸、ポリイミド等のポリイミド系樹脂、ポリフッ化ビニリデン等のフッ素樹脂、変性PPE樹脂、ポリカーボネート樹脂、ポリアセタール樹脂、又はこれらの変性物などの樹脂などが挙げられる。   The organic polymer used in the organic polymer composition of the present invention is not particularly limited, and preferred examples include natural rubber, isoprene rubber, nitrile rubber (for example, acrylonitrile-butadiene rubber, acrylonitrile-styrene-butadiene rubber, etc.), Hydrogenated nitrile rubber, butadiene rubber, styrene-butadiene rubber, butyl rubber, halogenated butyl rubber, ethylene-α-olefin rubber (for example, ethylene-propylene rubber, ethylene-propylene-nonconjugated diene rubber, ethylene-butene-nonconjugated diene rubber, etc.), Polynorbornene rubber, acrylic rubber, fluoro rubber, silicone rubber, ethylene-vinyl acetate rubber, epichlorohydrin rubber, epichlorohydrin-ethylene oxide copolymer rubber, chlorinated polyethylene rubber, chloroprene rubber, chloros Rubbers such as phonated polyethylene rubber, fluorinated rubber and polyurethane rubber, polyolefin resins such as polyethylene and polypropylene, polyester resins such as polyethylene terephthalate, polyethylene naphthalate and polybutylene terephthalate, polyamide resins such as nylon 6 and nylon 6,6, Epoxy resins such as bisphenol A type epoxy resin and novolac type epoxy resin, polyimide resins such as polyamideimide, polyamic acid and polyimide, fluororesins such as polyvinylidene fluoride, modified PPE resins, polycarbonate resins, polyacetal resins, or modifications thereof Resins such as products.

本発明の有機重合体組成物は、有機重合体と化学処理された変性導電性高分子分散液とを混合することにより得られるが、混合方法には特に限定はなく、変性導電性高分子分散液と有機重合体とを混練機で混合する方法が挙げられる。混練機としては、ロール、ニーダー、バンバリーミキサー、2軸押出機等が挙げられる。また、本発明の有機重合体組成物は、変性導電性高分子の分散液と、あらかじめ溶媒等に溶解又は分散させた有機重合体とを混合する方法によっても得ることができる。有機重合体を溶解又は分散させる溶媒としては、特に限定されないが、化学処理された変性導電性高分子の分散液の溶媒と相溶できるものが好ましい。混合方法は、化学処理された変性導電性高分子分散液と有機重合体とが効率よく混合できる方法であれば特に限定されないが、簡便な撹拌混合法やサンドミル、ビーズミル、ボールミル、3本ロールミル、コロイドミル、超音波ホモジナイザー、ジェットミル等の分散機を用いて混合する方法が挙げられる。また、本発明の有機重合体組成物は、化学処理された変性導電性高分子分散液と一般に有機重合体の加工性、柔軟性を改善するために用いられている可塑剤、プロセスオイルとを予め混合したものを上記有機重合体と混合することによっても得られる。   The organic polymer composition of the present invention can be obtained by mixing an organic polymer and a chemically treated modified conductive polymer dispersion, but the mixing method is not particularly limited, and the modified conductive polymer dispersion is not limited. The method of mixing a liquid and an organic polymer with a kneader is mentioned. Examples of the kneader include a roll, a kneader, a Banbury mixer, and a twin screw extruder. The organic polymer composition of the present invention can also be obtained by a method of mixing a dispersion of a modified conductive polymer and an organic polymer previously dissolved or dispersed in a solvent or the like. The solvent for dissolving or dispersing the organic polymer is not particularly limited, but a solvent that is compatible with the solvent of the chemically treated modified conductive polymer dispersion is preferable. The mixing method is not particularly limited as long as the chemically treated modified conductive polymer dispersion and the organic polymer can be efficiently mixed, but a simple stirring and mixing method, a sand mill, a bead mill, a ball mill, a three roll mill, The method of mixing using dispersers, such as a colloid mill, an ultrasonic homogenizer, and a jet mill, is mentioned. The organic polymer composition of the present invention comprises a chemically treated modified conductive polymer dispersion and a plasticizer or process oil generally used for improving the workability and flexibility of the organic polymer. It can also be obtained by mixing a premixed material with the organic polymer.

また、本発明の有機重合体組成物は、変性導電性高分子及び/又はその分散液と上記有機重合体の補強剤として用いられているカーボンブラック、シリカ、タルク等のフィラーと予め混合したものと上記有機重合体と混合することによっても得られる。また、本発明の有機重合体組成物は、変性導電性高分子の分散液で上記補強剤を処理したものを上記有機重合体と混合することによっても得られる。   In addition, the organic polymer composition of the present invention is premixed with a modified conductive polymer and / or a dispersion thereof and a filler such as carbon black, silica or talc used as a reinforcing agent for the organic polymer. And the above organic polymer. The organic polymer composition of the present invention can also be obtained by mixing the above-mentioned organic polymer with the reinforcing agent treated with a dispersion of a modified conductive polymer.

本発明の有機重合体組成物にはその他の成分としては、例えばカーボンブラック、シリカ、タルクなどの補強剤(フィラー)、加硫又は架橋剤、加硫又は加硫促進剤、シランカップリング剤、各種オイル、老化防止剤、酸化防止剤、紫外線吸収剤、光安定剤、難燃剤、可塑剤等のゴム又は樹脂用に一般的に配合されている各種添加剤を従来の配合量で任意的に配合することができる。本発明の有機重合体組成物には、本発明の目的を損なわない範囲内で、イオン導電剤、電子伝導剤を配合しても差し支えない。イオン導電剤としては、例えば第4級アンモニウム塩、ホウ酸塩、界面活性剤等が挙げられる。電子伝導剤としては、カーボンブラック、導電性酸化亜鉛、導電性酸化チタン、導電性酸化スズ、グラファイト、カーボンナノチューブ、カーボン短繊維等が挙げられる。   Other components in the organic polymer composition of the present invention include, for example, reinforcing agents (fillers) such as carbon black, silica, and talc, vulcanization or crosslinking agents, vulcanization or vulcanization accelerators, silane coupling agents, Various additives commonly used for rubbers or resins such as various oils, anti-aging agents, antioxidants, UV absorbers, light stabilizers, flame retardants, plasticizers, etc., optionally in conventional compounding amounts Can be blended. The organic polymer composition of the present invention may be blended with an ionic conductive agent and an electronic conductive agent within a range that does not impair the object of the present invention. Examples of the ionic conductive agent include quaternary ammonium salts, borates, and surfactants. Examples of the electron conductive agent include carbon black, conductive zinc oxide, conductive titanium oxide, conductive tin oxide, graphite, carbon nanotube, and carbon short fiber.

本発明のラジカル種で化学処理された変性導電性高分子は、溶媒及び有機重合体に対する分散性が良好である。その結果、変性導電性高分子と有機重合体とを含む有機重合体組成物は、電気抵抗値のバラツキ及び環境依存性が小さくなり、電気抵抗値の制御が可能となり、安定的な電気特性を示す。そして、本発明の有機重合体組成物は、上記特徴を持つため、OA機器類に用いられている導電性ベルト、導電性ロール、導電性ブレード等の導電性部材、及び電子部品類の静電気障害を防止する帯電防止剤及び包装材として有用である。また、本発明の有機重合体組成物は電磁波シールド、アクチュエータ等にも利用できる。   The modified conductive polymer chemically treated with the radical species of the present invention has good dispersibility in a solvent and an organic polymer. As a result, the organic polymer composition containing the modified conductive polymer and the organic polymer has less variation in electrical resistance and environmental dependency, and can control the electrical resistance, thereby providing stable electrical characteristics. Show. And since the organic polymer composition of this invention has the said characteristic, the electroconductive member used for OA equipments, such as electroconductive belts, electroconductive rolls, electroconductive blades, and the electrostatic disturbance of electronic components It is useful as an antistatic agent and a packaging material for preventing the above. The organic polymer composition of the present invention can also be used for electromagnetic wave shields, actuators and the like.

以下に実施例及び比較例に基づいて本発明を更に具体的に説明するが、本発明を以下の実施例に限定するものでないことはいうまでもない。
反応例1:導電性ポリアニリン分散液の調製
トルエン300gにアニリン6g、ドデシルベンゼンスルホン酸21gを溶解させた後、6mol/L濃度の塩酸10.8mLを溶解させた蒸留水100gを加えた。この混合溶液を5℃以下に冷却した後、過硫酸アンモニウム16.2gを溶解させた蒸留水100gを加えた。5℃以下の状態で7時間酸化重合を行った後、トルエン450gを反応溶液に加えた。さらに、水150gにメタノール80g溶解した混合溶液を加え、撹拌を行った。撹拌を止め反応溶液を静置すると、反応溶液はトルエン層と水メタノール層の2層に分離した。導電性ポリアニリンが分散しているトルエン層を採取した。
The present invention will be described more specifically below based on examples and comparative examples. Needless to say, the present invention is not limited to the following examples.
Reaction Example 1 Preparation of Conductive Polyaniline Dispersion After dissolving 6 g of aniline and 21 g of dodecylbenzenesulfonic acid in 300 g of toluene, 100 g of distilled water in which 10.8 mL of 6 mol / L hydrochloric acid was dissolved was added. After cooling this mixed solution to 5 ° C. or lower, 100 g of distilled water in which 16.2 g of ammonium persulfate was dissolved was added. After oxidative polymerization for 7 hours at 5 ° C. or lower, 450 g of toluene was added to the reaction solution. Further, a mixed solution in which 80 g of methanol was dissolved in 150 g of water was added and stirred. When the stirring was stopped and the reaction solution was allowed to stand, the reaction solution was separated into two layers, a toluene layer and a water methanol layer. A toluene layer in which conductive polyaniline was dispersed was collected.

反応例2:化学処理された変性導電性ポリアニリン分散液1の調製
反応例1で得られた導電性ポリアニリン分散液80gにアゾ化合物4,4‘−アゾビス−(4−シアノ吉草酸)0.7gを溶解したNMP溶液20gを加えた。窒素下、70℃、16時間反応を行った後、トルエンを真空下で加熱除去することにより化学処理された変性導電性ポリアニリンのNMP分散液1(ポリアニリン含有量3重量%)を得た。変性導電性ポリアニリンNMP分散液の一部を採取し、NMPを真空下で加熱除去し、緑色粉末を得た。この粉末をアンモニア水で処理した後、水洗浄、乾燥することにより脱ドープ状態のポリアニリン粉末を得た。この粉末の赤外吸収スペクトルは、1700cm-1付近にカルボニル基に由来する吸収が観測されたことから、4,4‘−アゾビス−(4−シアノ吉草酸)から形成されたラジカル種により導電性ポリアニリンが化学処理されていることがわかった。
Reaction Example 2: Preparation of chemically treated modified conductive polyaniline dispersion 1 0.7 g of azo compound 4,4′-azobis- (4-cyanovaleric acid) was added to 80 g of conductive polyaniline dispersion obtained in Reaction Example 1. 20 g of an NMP solution in which was dissolved was added. After reacting at 70 ° C. for 16 hours under nitrogen, toluene was removed by heating under vacuum to obtain a chemically treated modified conductive polyaniline NMP dispersion 1 (polyaniline content 3 wt%). A part of the modified conductive polyaniline NMP dispersion was collected, and NMP was removed by heating under vacuum to obtain a green powder. This powder was treated with aqueous ammonia, then washed with water and dried to obtain a polyaniline powder in a dedope state. Infrared absorption spectrum of this powder was confirmed to be conductive by radical species formed from 4,4′-azobis- (4-cyanovaleric acid) since absorption derived from a carbonyl group was observed around 1700 cm −1 . It was found that polyaniline was chemically treated.

反応例3:化学処理された変性導電性ポリアニリン分散液2の調製
反応例1で得られた導電性ポリアニリン分散液80gに高分子系アゾ化合物VPE−201(和光純薬製)0.7gを溶解したNMP溶液20gを加えた。窒素下、70℃、16時間反応を行った後、トルエンを真空下で加熱除去することにより化学処理された変性導電性ポリアニリンのNMP分散液2を得た(ポリアニリン含有量3重量%)。変性導電性ポリアニリンNMP分散液の一部を採取し、NMPを真空下で加熱除去し、緑色粉末を得た。この粉末をアンモニア水で処理した後、水洗浄、乾燥することにより脱ドープ状態のポリアニリン粉末を得た。この粉末の赤外吸収スペクトルは、1100cm-1付近にポリエーテル鎖に由来する吸収が観測されたことから、高分子系アゾ化合物から形成されたラジカル種により導電性ポリアニリンが化学処理されていることがわかった。
Reaction Example 3: Preparation of chemically treated modified conductive polyaniline dispersion 2 0.7 g of polymer azo compound VPE-201 (manufactured by Wako Pure Chemical Industries) was dissolved in 80 g of conductive polyaniline dispersion obtained in Reaction Example 1. 20 g of the prepared NMP solution was added. After reacting at 70 ° C. for 16 hours under nitrogen, toluene was removed by heating under vacuum to obtain an NMP dispersion 2 of modified conductive polyaniline chemically treated (polyaniline content 3% by weight). A part of the modified conductive polyaniline NMP dispersion was collected, and NMP was removed by heating under vacuum to obtain a green powder. This powder was treated with aqueous ammonia, then washed with water and dried to obtain a polyaniline powder in a dedope state. In the infrared absorption spectrum of this powder, absorption derived from the polyether chain was observed in the vicinity of 1100 cm −1 , so that the conductive polyaniline was chemically treated with radical species formed from the polymeric azo compound. I understood.

反応例4:化学処理された変性導電性ポリアニリン分散液3の調製
反応例1で得られた導電性ポリアニリン分散液80gに高分子系アゾ化合物VPS−501(和光純薬製)0.7gを加えた。開始剤が溶解したのを確認した後、NMP20gを添加し、窒素下、70℃、16時間反応を行うことにより、化学処理された変性導電性ポリアニリンのNMP分散液3を得た(ポリアニリン含有量3重量%)。変性導電性ポリアニリンNMP分散液の一部を採取し、NMPを真空下で加熱除去し、緑色粉末を得た。この粉末をアンモニア水で処理した後、水洗浄、乾燥することにより脱ドープ状態のポリアニリン粉末を得た。この粉末の赤外吸収スペクトルは、1000cm-1付近にシロキサン結合に由来する吸収が観測されたことから、高分子系アゾ化合物から形成されたラジカル種により導電性ポリアニリンが化学処理されていることがわかった。
Reaction Example 4: Preparation of Chemically Modified Modified Conductive Polyaniline Dispersion 3 To 80 g of the conductive polyaniline dispersion obtained in Reaction Example 1, 0.7 g of a polymer azo compound VPS-501 (manufactured by Wako Pure Chemical Industries) was added. It was. After confirming that the initiator was dissolved, 20 g of NMP was added, and the reaction was carried out under nitrogen at 70 ° C. for 16 hours to obtain an NMP dispersion 3 of chemically treated modified conductive polyaniline (polyaniline content) 3% by weight). A part of the modified conductive polyaniline NMP dispersion was collected, and NMP was removed by heating under vacuum to obtain a green powder. This powder was treated with aqueous ammonia, then washed with water and dried to obtain a polyaniline powder in a dedope state. In the infrared absorption spectrum of this powder, absorption derived from a siloxane bond was observed in the vicinity of 1000 cm −1 , indicating that the conductive polyaniline was chemically treated with radical species formed from a polymeric azo compound. all right.

反応例5:化学処理された変性導電性ポリアニリンの調製
反応例1で得られた導電性ポリアニリン分散液80gにアゾ化合物2,2’−アゾビス(N−ブチル−2−メチルプロピルアミド)(和光純薬製)0.7gを加えた。開始剤が溶解したのを確認した後、窒素下、70℃、16時間反応を行うことにより、化学処理された変性導電性ポリアニリンのトルエン分散液を得た。変性導電性ポリアニリントルエン分散液からトルエンを真空下で加熱除去し、緑色粉末を2.3g得た。この粉末の一部を採取しアンモニア水で処理した後、水洗浄、乾燥することにより脱ドープ状態のポリアニリン粉末を得た。この粉末の赤外吸収スペクトルは、1650cm-1付近にアミド結合に由来する吸収が観測されたことから、アゾ化合物から形成したラジカル種により導電性ポリアニリンが化学処理されていることがわかった。
Reaction Example 5: Preparation of chemically treated modified conductive polyaniline To 80 g of the conductive polyaniline dispersion obtained in Reaction Example 1, azo compound 2,2′-azobis (N-butyl-2-methylpropylamide) (Wako Pure Chemical Industries, Ltd.) 0.7 g) was added. After confirming that the initiator was dissolved, a toluene dispersion of chemically treated modified conductive polyaniline was obtained by reacting at 70 ° C. for 16 hours under nitrogen. Toluene was removed from the modified conductive polyaniline toluene dispersion by heating under vacuum to obtain 2.3 g of green powder. A part of this powder was collected, treated with aqueous ammonia, washed with water and dried to obtain a dedope polyaniline powder. In the infrared absorption spectrum of this powder, absorption derived from an amide bond was observed in the vicinity of 1650 cm −1 , indicating that the conductive polyaniline was chemically treated with the radical species formed from the azo compound.

実施例1
ポリメチルメタクリレート(アルドリッチ社製、重量平均分子量12万)を溶解させたNMP溶液(濃度20重量%)10gに反応例2で得られた化学処理された変性導電性ポリアニリン分散液1を7.0g添加混合することにより化学処理された変性導電性ポリアニリンとポリメチルメタクリレートとからなるNMP分散液(有機重合体組成物1)を調製した。このNMP分散液をガラス基板上に塗布後、150℃で、1時間加熱処理することにより、導電性ポリアニリン含有ポリメチルメタクリレートフィルムを厚さ150μmで得た。
Example 1
7.0 g of the chemically treated modified conductive polyaniline dispersion 1 obtained in Reaction Example 2 was added to 10 g of NMP solution (concentration 20 wt%) in which polymethyl methacrylate (Aldrich, weight average molecular weight 120,000) was dissolved. An NMP dispersion (organic polymer composition 1) comprising a modified conductive polyaniline chemically treated by addition and mixing and polymethyl methacrylate was prepared. The NMP dispersion was applied on a glass substrate and then heat-treated at 150 ° C. for 1 hour to obtain a conductive polyaniline-containing polymethyl methacrylate film having a thickness of 150 μm.

実施例2
ポリメチルメタクリレート(アルドリッチ社製、重量平均分子量12万)を溶解させたNMP溶液(濃度20重量%)10gに反応例3で得られた化学処理された変性導電性ポリアニリン分散液2を7.0g添加混合することにより化学処理された変性導電性ポリアニリンとポリメチルメタクリレートとからなるNMP分散液(有機重合体組成物2)を調製した。このNMP分散液をガラス基板上に塗布後、150℃で、1時間加熱処理することにより導電性ポリアニリン含有ポリメチルメタクリレートフィルムを厚さ150μmで得た。
Example 2
7.0 g of the chemically treated modified conductive polyaniline dispersion 2 obtained in Reaction Example 3 was added to 10 g of NMP solution (concentration 20 wt%) in which polymethyl methacrylate (Aldrich, weight average molecular weight 120,000) was dissolved. An NMP dispersion (organic polymer composition 2) comprising a modified conductive polyaniline chemically treated by addition and mixing and polymethyl methacrylate was prepared. The NMP dispersion was applied on a glass substrate and then heat-treated at 150 ° C. for 1 hour to obtain a conductive polyaniline-containing polymethyl methacrylate film having a thickness of 150 μm.

実施例3
ポリアミド酸NMP溶液(宇部興産、ポリイミドワニス「U−ワニス−A」(固形分18%))10gに反応例4で得られた化学処理された変性導電性ポリアニリンNMP分散液3を5.7g添加混合することにより化学処理された変性導電性ポリアニリンとポリアミド酸とからなるNMP分散液(有機重合体組成物3)を調製した。このNMP分散液をガラス基板上に塗布後、150℃1時間、200℃30分、300℃40分で加熱処理することにより、導電性ポリアニリン含有ポリイミドフィルムを厚さ150μmで得た。
Example 3
5.7 g of the chemically treated modified conductive polyaniline NMP dispersion 3 obtained in Reaction Example 4 was added to 10 g of the polyamic acid NMP solution (Ube Industries, polyimide varnish “U-Varnish-A” (solid content 18%)). An NMP dispersion (organic polymer composition 3) composed of a modified conductive polyaniline chemically treated by mixing and polyamic acid was prepared. After this NMP dispersion was applied on a glass substrate, a conductive polyaniline-containing polyimide film was obtained with a thickness of 150 μm by heat treatment at 150 ° C. for 1 hour, 200 ° C. for 30 minutes, and 300 ° C. for 40 minutes.

実施例4
SBR(日本ゼオン社製、Nipol 1502)100gに反応例5で得られた化学処理された変性導電性ポリアニリン20gをロールを用いて混練することにより化学処理された変性導電性ポリアニリンを含有するSBR(有機重合体組成物4)を得た。この有機重合体組成物4に亜鉛華(正同化学工業(株)製、酸化亜鉛3号)3g、ステアリン酸(日本油脂(株)製)1g、加硫促進剤(N−t−ブチル−2−ベンゾチアゾールスルフェンアミド)(大内新興化学(株)製、ノクセラーNSP)1g、硫黄((株)鶴見化学製)1.7g、老化防止剤(N−フェニル−N’−1,3−ジメチルブチル−p−フェニレンジアミン)(FLEXSIS製、SANTOFLEX 6PPD)1gをロールを用いて混合した後、500x500x1mmの金型中で180℃30分間プレス成形することにより加硫ゴムシートを作製した。
Example 4
SBR containing modified conductive polyaniline chemically treated by kneading 20 g of chemically treated modified conductive polyaniline obtained in Reaction Example 5 with 100 g of SBR (manufactured by Nippon Zeon, Nipol 1502) using a roll ( An organic polymer composition 4) was obtained. In this organic polymer composition 4, 3 g of zinc white (manufactured by Shodo Chemical Industry Co., Ltd., zinc oxide 3), 1 g of stearic acid (manufactured by Nippon Oil & Fats Co., Ltd.), vulcanization accelerator (Nt-butyl- 2-benzothiazolesulfenamide) (Ouchi Shinsei Chemical Co., Ltd., Noxeller NSP) 1 g, sulfur (Tsurumi Chemical Co., Ltd.) 1.7 g, anti-aging agent (N-phenyl-N′-1,3) -Dimethylbutyl-p-phenylenediamine (FLEXSIS, SANTOFLEX 6PPD) 1 g was mixed using a roll and then press-molded in a 500 x 500 x 1 mm mold at 180 ° C for 30 minutes to prepare a vulcanized rubber sheet.

比較例1
脱ドープ状態ポリアニリン粉末(アルドリッチ製)をNMPに溶解することにより10重量%のポリアニリンNMP溶液を得た。このポリアニリンNMP溶液1.8gをポリアミド酸NMP溶液(宇部興産、ポリイミドワニス「U−ワニス−A」(固形分18%))10gに添加混合した。この溶液を用いて、実施例3と同様にポリアニリン含有ポリイミドフィルムを厚さ150μmで得た。得られたポリイミドフィルムを、蒸留水400gとメタノール500gの混合溶媒にパラトルエスルホン酸100gを溶解させて調整したドーパント溶液に、室温下30分間浸漬して導電性ポリアニリン含有ポリイミドフィルムを得た。
Comparative Example 1
Dedoped polyaniline powder (manufactured by Aldrich) was dissolved in NMP to obtain a 10 wt% polyaniline NMP solution. 1.8 g of this polyaniline NMP solution was added to and mixed with 10 g of a polyamic acid NMP solution (Ube Industries, polyimide varnish “U-varnish-A” (solid content 18%)). Using this solution, a polyaniline-containing polyimide film having a thickness of 150 μm was obtained in the same manner as in Example 3. The obtained polyimide film was immersed in a dopant solution prepared by dissolving 100 g of p-toluenesulfonic acid in a mixed solvent of 400 g of distilled water and 500 g of methanol to obtain a conductive polyaniline-containing polyimide film at room temperature for 30 minutes.

比較例2
ドープ状態ポリアニリン粉末(アルドリッチ製)0.2gをポリアミド酸NMP溶液(宇部興産、ポリイミドワニス「U−ワニス−A」(固形分18%))10gに添加混合した。この溶液を用いて、実施例3と同様に導電性ポリアニリン含有ポリイミドフィルムを厚さ150μmで得た。ポリイミド樹脂ベルトの表面にはポリアニリン粒子の凝集物が観察され、樹脂表面は滑らかでなかった。
Comparative Example 2
0.2 g of doped polyaniline powder (manufactured by Aldrich) was added and mixed with 10 g of a polyamic acid NMP solution (Ube Industries, polyimide varnish “U-varnish-A” (solid content 18%)). Using this solution, a conductive polyaniline-containing polyimide film was obtained in a thickness of 150 μm in the same manner as in Example 3. Aggregates of polyaniline particles were observed on the surface of the polyimide resin belt, and the resin surface was not smooth.

比較例3
カーボンブラック(三菱化学社製MA−100)25gをポリアミド酸NMP溶液(宇部興産、ポリイミドワニス「U−ワニス−A」(固形分18%))100gに添加混合した。この溶液を用いて、実施例3と同様に導電性ポリアニリン含有ポリイミドフィルムを厚さ150μmで得た。
Comparative Example 3
25 g of carbon black (MA-100 manufactured by Mitsubishi Chemical Corporation) was added and mixed with 100 g of a polyamic acid NMP solution (Ube Industries, polyimide varnish “U-varnish-A” (solid content 18%)). Using this solution, a conductive polyaniline-containing polyimide film was obtained in a thickness of 150 μm in the same manner as in Example 3.

上で得られたフィルムに関して以下の4項目を評価し、結果を表Iに示す。
(1)体積抵抗値:抵抗測定器(アドバンテスト社製、R8340A)を用いて、試料に
250Vの電圧を30秒間印加したときの体積抵抗値を測定した。
(2)体積抵抗値の面内ばらつき:シート面内の24ヶ所の体積抵抗値を測定し、体積抵
抗値の対数値をとり、その最大値と最小値の差として算出した。
(3)環境依存性:高温高湿(40℃、80%RH)と低温低湿(10℃、15%RH)
の環境下における体積抵抗値の対数値の差として算出した。
(4)表面滑らかさ:目視で表面の滑らかさを観察した。
The following four items were evaluated for the film obtained above, and the results are shown in Table I.
(1) Volume resistance value: The volume resistance value when a voltage of 250 V was applied to the sample for 30 seconds was measured using a resistance measuring instrument (R8340A, manufactured by Advantest Corporation).
(2) In-plane variation in volume resistance value: The volume resistance values at 24 locations in the sheet surface were measured, the logarithmic value of the volume resistance value was taken, and the difference between the maximum value and the minimum value was calculated.
(3) Environment dependency: high temperature and high humidity (40 ° C., 80% RH) and low temperature and low humidity (10 ° C., 15% RH)
It was calculated as the difference between the logarithmic values of the volume resistance values in the environment.
(4) Surface smoothness: The surface smoothness was visually observed.

Figure 0004826563
Figure 0004826563

本発明のラジカル種で化学処理された変性導電性高分子を含む有機重合体組成物は、変性導電性高分子が有機重合体中に均一に分散するためフィルム表面には異物が観測されず、なめらかな形状であり、フィルム面内の電気抵抗値のバラツキが小さく、環境依存性に対する特性に優れている。このような特性をもつ本発明の有機重合体組成物は、OA機器類に用いられている導電性ベルト、導電性ロール、導電性ブレード等の導電性部材、及び電子部品類の静電気障害を防止する帯電防止剤及び包装材として有用である。   In the organic polymer composition containing the modified conductive polymer chemically treated with the radical species of the present invention, the modified conductive polymer is uniformly dispersed in the organic polymer, so no foreign matter is observed on the film surface, It has a smooth shape, small variation in electrical resistance value in the film surface, and excellent environmental dependency characteristics. The organic polymer composition of the present invention having such characteristics prevents electrostatic disturbance of conductive members such as conductive belts, conductive rolls, conductive blades, and electronic parts used in OA equipment. It is useful as an antistatic agent and a packaging material.

Claims (6)

有機溶媒及び水を含む混合溶媒中でアニリン、チオフェン、ピロール又はこれらの誘導体のモノマーを、酸化剤及びドーピング剤の存在下に、化学酸化重合して得られる導電性高分子の有機溶媒分散液をアゾ化合物、チオール化合物、ジスルフィド化合物及びペルオキソ化合物から選ばれた少なくとも1種の化合物から発生するラジカル種を用いて、加熱又は光照射下に、化学処理して得られる変性導電性高分子分散液。   An organic solvent dispersion of a conductive polymer obtained by chemical oxidative polymerization of a monomer of aniline, thiophene, pyrrole or a derivative thereof in a mixed solvent containing an organic solvent and water in the presence of an oxidizing agent and a doping agent. A modified conductive polymer dispersion obtained by subjecting a radical species generated from at least one compound selected from an azo compound, a thiol compound, a disulfide compound, and a peroxo compound to chemical treatment under heating or light irradiation. 前記ラジカル種がアゾ化合物である請求項1に記載の変性導電性高分子分散液。   The modified conductive polymer dispersion according to claim 1, wherein the radical species is an azo compound. 請求項1又は2に記載の変性導電性高分子分散液と有機重合体とを含んでなる有機重合体組成物。   An organic polymer composition comprising the modified conductive polymer dispersion according to claim 1 and an organic polymer. 変性導電性高分子分解液中の変性導電性高分子の量が、有機重合体100重量部当り、0.05〜80重量部である請求項3に記載の有機重合体組成物。   The organic polymer composition according to claim 3, wherein the amount of the modified conductive polymer in the modified conductive polymer decomposition solution is 0.05 to 80 parts by weight per 100 parts by weight of the organic polymer. 体積抵抗値が102〜1013Ω・cm-1である請求項3又は4に記載の有機重合体組成物。 The organic polymer composition according to claim 3 or 4, which has a volume resistivity of 10 2 to 10 13 Ω · cm -1 . 有機溶媒及び水を含む混合溶媒中で、アニリン、チオフェン、ピロール又はこれらの誘導体のモノマーを、酸化剤及びドーピング剤存在下に、化学酸化重合し、次いで得られた導電性高分子の有機溶媒分散液をアゾ化合物、チオール化合物、ジスルフィド化合物及びペルオキソ化合物から選ばれた少なくとも1種の化合物から発生するラジカル種を用いて、加熱又は光照射下に、化学処理することを含んでなる請求項1に記載の変性導電性高分子分散液の製造方法。   An aniline, thiophene, pyrrole or a derivative thereof is chemically oxidatively polymerized in the presence of an oxidizing agent and a doping agent in a mixed solvent containing an organic solvent and water, and then the resulting conductive polymer is dispersed in an organic solvent. The liquid is chemically treated with a radical species generated from at least one compound selected from an azo compound, a thiol compound, a disulfide compound and a peroxo compound under heating or light irradiation. A method for producing the modified conductive polymer dispersion as described.
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