JP2004193117A - Insulated cable and resin dispersion - Google Patents

Insulated cable and resin dispersion Download PDF

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JP2004193117A
JP2004193117A JP2003398814A JP2003398814A JP2004193117A JP 2004193117 A JP2004193117 A JP 2004193117A JP 2003398814 A JP2003398814 A JP 2003398814A JP 2003398814 A JP2003398814 A JP 2003398814A JP 2004193117 A JP2004193117 A JP 2004193117A
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resin
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polyester
component
parts
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JP4044032B2 (en
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Hideo Fukuda
秀雄 福田
Yokun Kin
容薫 金
Tei Ishii
禎 石井
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Furukawa Electric Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an insulated cable restrained from the lowering of a dielectric breakdown voltage due to the generation of crazing with the passage of time, superior in thermal resistance and high temperature insulation characteristics, and to provide a resin dispersion which can be formed into an extrusion molding article superior in surface condition without bringing about generation of fisheyes accompanied by the extrusion molding process. <P>SOLUTION: The insulated cable and the resin dispersion are manufactured by coating a thin film insulating layer composed of a resin (B) containing a functional group having reactivity with polyester group resin, and a resin dispersion having an olefine group resin (C) as a dispersion phase if necessary by applying a polyester resin (A) as a continuous phase. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

本発明は電気、電子機器に使用する絶縁電線、特にこれらの機器中の巻線として使用する絶縁電線に関する。また、本発明は、絶縁電線の被覆層等に使用することができる樹脂分散体に関する。さらに、本発明は、前記樹脂分散体より得られる、表面状態の優れたフィルム、ボトル等の成形品に関するものである。   The present invention relates to insulated wires used for electric and electronic devices, and particularly to insulated wires used as windings in these devices. The present invention also relates to a resin dispersion that can be used for a coating layer of an insulated wire and the like. Further, the present invention relates to a molded article such as a film or a bottle having an excellent surface condition, which is obtained from the resin dispersion.

芳香族ジカルボン酸残基と脂肪族グリコールとからなる線状ポリエステル樹脂、例えばポリエチレンテレフタレート樹脂(以下PETという)或いはポリブチレンテレフタレート樹脂を押出被覆して得た絶縁電線に関しては、30℃以上の環境下で放置するとクレージング発生に起因される絶縁破壊電圧の低下が確認される。その解決手段として、ポリエステル系樹脂と良好な相溶性を表わすカルボン酸を有するエチレン系共重合体を1〜15質量%配合することによって、絶縁電線の安定な絶縁破壊電圧が得られることが特許文献1に提案されている。
しかし、近年の電気・電子機器の小型化に伴い、構成部品による発熱や放熱性の悪化により高温環境における電気絶縁性向上が要求されている。これに対して、従来のポリエステル樹脂を押出被覆して得た絶縁電線に関しては、上記の要求を十分満足するものは得られていなかった。
特開昭58−147902号公報
For an insulated wire obtained by extrusion-coating a linear polyester resin comprising an aromatic dicarboxylic acid residue and an aliphatic glycol, for example, a polyethylene terephthalate resin (hereinafter referred to as PET) or a polybutylene terephthalate resin, in an environment of 30 ° C. or more. , A decrease in dielectric breakdown voltage due to crazing is confirmed. As a solution, a stable breakdown voltage of an insulated wire can be obtained by mixing 1 to 15% by mass of an ethylene copolymer having a carboxylic acid exhibiting good compatibility with a polyester resin. 1 is proposed.
However, with the recent miniaturization of electric and electronic devices, there has been a demand for improved electrical insulation in a high-temperature environment due to heat generation and deterioration of heat dissipation due to components. On the other hand, as for the insulated wire obtained by extrusion-coating a conventional polyester resin, one that sufficiently satisfies the above requirements has not been obtained.
JP-A-58-147902

このような問題を解決するために、本発明は、経時において、クレージング発生による絶縁破壊電圧の低下を抑制すると共に耐熱性、高温絶縁特性に優れる絶縁電線を提供することを目的とする。
また、本発明は、押出成形加工に伴い、ブツ発生を引き起こすことなく、表面状態に優れた押出成形品を得ることができる樹脂分散体を提供することを目的とする。
In order to solve such a problem, an object of the present invention is to provide an insulated wire that suppresses a decrease in dielectric breakdown voltage due to the occurrence of crazing over time and has excellent heat resistance and high-temperature insulation properties.
Another object of the present invention is to provide a resin dispersion capable of obtaining an extruded product having an excellent surface state without causing lumps during the extrusion process.

本発明によれば、下記の手段が提供される。
(1)導体上にポリエステル系樹脂(A)を連続相とし、ポリエステル系樹脂と反応性を有する官能基を含む樹脂(B)を分散相とする樹脂分散体よりなる薄膜絶縁層を被覆したことを特徴とする絶縁電線。
(2)導体上にポリエステル系樹脂(A)を連続相とし、ポリエステル系樹脂と反応性を有する官能基を含む樹脂(B)が平均粒径0.05〜3μmに分散された樹脂分散体よりなる薄膜絶縁層を被覆したことを特徴とする絶縁電線。
(3)前記樹脂分散体が、前記ポリエステル系樹脂(A)100質量部に対し、前記樹脂(B)1〜20質量部を含有することを特徴とする(1)又は(2)項に記載の絶縁電線。
According to the present invention, the following means are provided.
(1) The conductor is coated with a thin film insulating layer made of a resin dispersion in which the polyester resin (A) is a continuous phase and the resin (B) containing a functional group reactive with the polyester resin is a dispersed phase. An insulated wire characterized by the following.
(2) From a resin dispersion in which a polyester-based resin (A) has a continuous phase on a conductor and a resin (B) containing a functional group reactive with the polyester-based resin is dispersed in an average particle size of 0.05 to 3 μm. An insulated wire coated with a thin film insulating layer.
(3) The resin dispersion (1) or (2), wherein the resin dispersion contains 1 to 20 parts by mass of the resin (B) based on 100 parts by mass of the polyester resin (A). Insulated wires.

(4)導体上にポリエステル系樹脂(A)を連続相とし、ポリエステル系樹脂と反応性を有する官能基を含む樹脂(B)及びオレフィン系樹脂(C)を分散相とする樹脂分散体よりなる薄膜絶縁層を被覆したことを特徴とする絶縁電線。
(5)導体上にポリエステル系樹脂(A)を連続相とし、ポリエステル系樹脂と反応性を有する官能基を含む樹脂(B)及びオレフィン系樹脂(C)がそれぞれ平均粒径0.05〜3μmに分散された樹脂分散体よりなる薄膜絶縁層を被覆したことを特徴とする絶縁電線。
(6)前記樹脂分散体が、前記ポリエステル系樹脂(A)100質量部に対し、前記樹脂(B)1〜20質量部、及び前記オレフィン系樹脂(C)0〜20質量部を含有することを特徴とする(4)又は(5)項に記載の絶縁電線。
(7)前記樹脂分散体が、前記ポリエステル系樹脂(A)100質量部に対し、前記樹脂(B) 1〜10質量部、前記オレフィン系樹脂(C)0〜10質量部を含有することを特徴とする(4)又は(5)記載の絶縁電線。
(4) A resin dispersion comprising a resin (B) containing a functional group reactive with the polyester resin as a continuous phase with the polyester resin (A) as a continuous phase on the conductor, and an olefin resin (C) as a dispersed phase. An insulated wire characterized by being coated with a thin-film insulating layer.
(5) The polyester resin (A) is a continuous phase on the conductor, and the resin (B) and the olefin resin (C) each containing a functional group reactive with the polyester resin have an average particle diameter of 0.05 to 3 μm. An insulated wire characterized by being coated with a thin-film insulating layer made of a resin dispersion dispersed in a resin.
(6) The resin dispersion contains 1 to 20 parts by mass of the resin (B) and 0 to 20 parts by mass of the olefin resin (C) based on 100 parts by mass of the polyester resin (A). The insulated wire according to (4) or (5), which is characterized in that:
(7) The resin dispersion contains 1 to 10 parts by mass of the resin (B) and 0 to 10 parts by mass of the olefin resin (C) based on 100 parts by mass of the polyester resin (A). The insulated wire according to (4) or (5), which is characterized in that:

(8)前記ポリエステル系樹脂(A)が、ジカルボン酸とジオールとの縮合反応により得られる重合体であることを特徴とする(1)〜(7)項のいずれか1項に記載の絶縁電線。
(9)前記樹脂(B)が、エポキシ基、オキサゾリル基、アミノ基及び無水マレイン酸残基からなる群から選択される少なくとも1種類の官能基を含有する樹脂であることを特徴とする(1)〜(7)項のいずれか1項に記載の絶縁電線。
(10)前記樹脂(B)が、オレフィン成分とエポキシ基含有化合物成分からなる共重合体であることを特徴とする(1)〜(7)項のいずれか1項に記載の絶縁電線。
(11)前記樹脂(B)が、オレフィン成分と不飽和カルボン酸グリシジルエステル成分からなる共重合体であることを特徴とする(1)〜(7)項のいずれか1項に記載の絶縁電線。
(8) The insulated wire according to any one of (1) to (7), wherein the polyester resin (A) is a polymer obtained by a condensation reaction between a dicarboxylic acid and a diol. .
(9) The resin (B) is a resin containing at least one functional group selected from the group consisting of an epoxy group, an oxazolyl group, an amino group and a maleic anhydride residue. ) The insulated wire according to any one of the above items (7) to (7).
(10) The insulated wire according to any one of (1) to (7), wherein the resin (B) is a copolymer including an olefin component and an epoxy group-containing compound component.
(11) The insulated wire according to any one of (1) to (7), wherein the resin (B) is a copolymer comprising an olefin component and an unsaturated carboxylic acid glycidyl ester component. .

(12)前記樹脂(B)が、アクリル成分又はビニル成分の中、少なくとも1種類以上の成分とオレフィン成分及びエポキシ基含有化合物成分からなる共重合体であることを特徴とする(1)〜(7)項のいずれか1項に記載の絶縁電線。
(13)前記樹脂(B)が、アクリル成分又はビニル成分の中、少なくとも1種類以上の成分とオレフィン成分及び不飽和カルボン酸グリシジルエステル成分からなる共重合体であることを特徴とする(1)〜(7)項のいずれか1項に記載の絶縁電線。
(14)前記オレフィン系樹脂(C)が、アクリル成分又はビニル成分の中、少なくとも1種類以上の成分とオレフィン成分からなる共重合体であることを特徴とする(4)〜(7)項のいずれか1項に記載の絶縁電線。
(15)ポリエステル系樹脂(A)を連続相とし、ポリエステル系樹脂と反応性を有する官能基を含む樹脂(B)を分散相とする樹脂分散体。
(16)ポリエステル系樹脂(A)を連続相とし、ポリエステル系樹脂と反応性を有する官能基を含む樹脂(B)が平均粒径0.05μm〜3μmに分散された樹脂分散体。
(17)前記ポリエステル系樹脂(A)100質量部に対し、前記樹脂(B)1〜10質量部を含有する(15)又は(16)項に記載の樹脂分散体。
(18)ポリエステル系樹脂(A)を連続相とし、ポリエステル系樹脂と反応性を有する官能基を含む樹脂(B)及びオレフィン系樹脂(C)を分散相とする樹脂分散体。
(19)ポリエステル系樹脂(A)を連続相とし、ポリエステル系樹脂と反応性を有する官能基を含む樹脂(B)及びオレフィン系樹脂(C)が平均粒径0.05μm〜3μmに分散された樹脂分散体。
(12) The resin (B) is a copolymer comprising at least one or more of an acrylic component or a vinyl component, and an olefin component and an epoxy group-containing compound component. 7) The insulated wire according to any one of the above items.
(13) The resin (B) is a copolymer comprising at least one or more of an acrylic component or a vinyl component, an olefin component, and an unsaturated carboxylic acid glycidyl ester component (1). The insulated wire according to any one of items (1) to (7).
(14) The olefin resin (C) according to any one of (4) to (7), wherein the olefin resin (C) is a copolymer comprising at least one or more components of an acrylic component or a vinyl component and an olefin component. The insulated wire according to claim 1.
(15) A resin dispersion containing the polyester resin (A) as a continuous phase and the resin (B) containing a functional group reactive with the polyester resin as a dispersed phase.
(16) A resin dispersion in which the polyester resin (A) is a continuous phase and the resin (B) having a functional group reactive with the polyester resin is dispersed in an average particle size of 0.05 μm to 3 μm.
(17) The resin dispersion according to (15) or (16), wherein the resin (B) is contained in an amount of 1 to 10 parts by mass with respect to 100 parts by mass of the polyester-based resin (A).
(18) A resin dispersion comprising a polyester resin (A) as a continuous phase and a resin (B) containing a functional group reactive with the polyester resin and an olefin resin (C) as a disperse phase.
(19) A resin in which a polyester resin (A) is used as a continuous phase and a resin (B) containing a functional group reactive with the polyester resin and an olefin resin (C) are dispersed in an average particle size of 0.05 μm to 3 μm. Dispersion.

(20)前記ポリエステル系樹脂(A)100質量部に対し、前記樹脂(B)1〜10質量部、前記オレフィン系樹脂(C)0〜10質量部を含有する(18)又は(19)項に記載の樹脂分散体。
(21)前記ポリエステル系樹脂(A)が、ジカルボン酸とジオールとの縮合反応により得られる重合体であることを特徴とする(15)〜(20)項のいずれか1項に記載の樹脂分散体。
(22)前記樹脂(B)が、エポキシ基、オキサゾリル基、アミノ基及び無水マレイン酸残基からなる群から選択される少なくとも1種類の官能基を含有する樹脂であることを特徴とする(15)〜(20)項のいずれか1項に記載の樹脂分散体。
(23)前記樹脂(B)が、オレフィン成分とエポキシ基含有化合物成分からなる共重合体であることを特徴とする(15)〜(20)項のいずれか1項に記載の樹脂分散体。
(24)前記樹脂(B)が、オレフィン成分と不飽和カルボン酸グリシジルエステル成分からなる共重合体であることを特徴とする(15)〜(20)項のいずれか1項に記載の樹脂分散体。
(25)前記樹脂(B)が、アクリル成分又はビニル成分の中、少なくとも1種類以上の成分とオレフィン成分及びエポキシ基含有化合物成分からなる共重合体であることを特徴とする(15)〜(20)項のいずれか1項に記載の樹脂分散体。
(26)前記樹脂(B)が、アクリル成分又はビニル成分の中、少なくとも1種類以上の成分とオレフィン成分及び不飽和カルボン酸グリシジルエステル成分からなる共重合体であることを特徴とする(15)〜(20)項のいずれか1項に記載の樹脂分散体。
(27)前記オレフィン系樹脂(C)が、アクリル成分又はビニル成分の中、少なくとも1種類以上の成分とオレフィン成分からなる共重合体であることを特徴とする(15)〜(20)項のいずれか1項に記載の樹脂分散体。
(20) Item (18) or (19) containing 1 to 10 parts by mass of the resin (B) and 0 to 10 parts by mass of the olefin resin (C) based on 100 parts by mass of the polyester resin (A). 3. The resin dispersion according to item 1.
(21) The resin dispersion according to any one of (15) to (20), wherein the polyester resin (A) is a polymer obtained by a condensation reaction of a dicarboxylic acid and a diol. body.
(22) The resin (B) is a resin containing at least one type of functional group selected from the group consisting of an epoxy group, an oxazolyl group, an amino group and a maleic anhydride residue (15). ) The resin dispersion according to any one of the above items (20) to (20).
(23) The resin dispersion according to any one of (15) to (20), wherein the resin (B) is a copolymer comprising an olefin component and an epoxy group-containing compound component.
(24) The resin dispersion according to any one of (15) to (20), wherein the resin (B) is a copolymer comprising an olefin component and an unsaturated carboxylic acid glycidyl ester component. body.
(25) The resin (B) is a copolymer comprising at least one or more of an acrylic component or a vinyl component, and an olefin component and an epoxy group-containing compound component. 20) The resin dispersion according to any one of the above items.
(26) The resin (B) is a copolymer comprising at least one or more components of an acrylic component or a vinyl component, an olefin component and an unsaturated carboxylic acid glycidyl ester component (15). -The resin dispersion according to any one of items (20) to (20).
(27) The olefin resin (C) according to any one of (15) to (20), wherein the olefin resin (C) is a copolymer comprising at least one or more components of an acrylic component or a vinyl component and an olefin component. The resin dispersion according to claim 1.

本発明の絶縁電線は、経時において、クレージング発生による絶縁破壊電圧の低下を抑制すると共に耐熱性、高温絶縁特性に優れる。
また、本発明の樹脂分散体によれば、押出成形加工に伴い、ブツ発生を引き起こすことなく、表面状態に優れた押出成形品を得ることができる。
INDUSTRIAL APPLICABILITY The insulated wire of the present invention suppresses a decrease in dielectric breakdown voltage due to crazing over time, and is excellent in heat resistance and high-temperature insulation properties.
Further, according to the resin dispersion of the present invention, an extruded product having an excellent surface state can be obtained without causing the occurrence of bumps during the extrusion process.

本発明の絶縁電線における薄膜絶縁層は、前記ポリエステル系樹脂(A)と前記官能基を含有する樹脂(B)との溶融混練等の過程における化学反応により(A)成分の中に(B)成分が均一微細分散された、(A)成分を連続相とし(B)成分を分散相とする樹脂分散体からなる。この本発明の樹脂分散体は、さらに、新たなブロックまたはグラフト共重合体形成の進行に伴う一部架橋構造の形成も考えられ、ポリエステル系樹脂の耐熱性を低下せしめることなくクレージング発生による絶縁破壊電圧の低下を抑制すると共に高温における電気絶縁性の低下を抑えることができるものと考えられる。   The thin-film insulating layer in the insulated wire of the present invention contains the component (B) in the component (A) by a chemical reaction in the process of melt-kneading the polyester resin (A) and the resin (B) containing the functional group. It is composed of a resin dispersion in which the components are uniformly finely dispersed and the component (A) is a continuous phase and the component (B) is a dispersed phase. In the resin dispersion of the present invention, it is also conceivable that a partially crosslinked structure is formed with the progress of formation of a new block or graft copolymer, and dielectric breakdown due to crazing occurs without lowering the heat resistance of the polyester resin. It is considered that a decrease in voltage and a decrease in electrical insulation at a high temperature can be suppressed.

本発明に用いられる前記ポリエステル系樹脂(A)は、好ましくは、ジカルボン酸とジオールとの縮合反応により得られる重合体である。
構成するカルボン酸成分としては、例えば、テレフタル酸、イソフタル酸、ナフタレンジカルボン酸、ジフェニルジカルボン酸、ジフェニルスルホンジカルボン酸、ジフェニルエーテルジカルボン酸もしくはこれらの酸のアルキルエステルもしくはハロゲン化物、ビス(p−カルボキシフェニル)メタン、4,4'−スルホニルジ安息香酸などの芳香族ジカルボン酸、またはアジピン酸、アゼライン酸、セバシン酸などの脂肪族ジカルボン酸等が挙げられる。ジカルボン酸は2種以上の混合物であっても良い。
The polyester resin (A) used in the present invention is preferably a polymer obtained by a condensation reaction between a dicarboxylic acid and a diol.
Examples of the constituent carboxylic acid component include terephthalic acid, isophthalic acid, naphthalenedicarboxylic acid, diphenyldicarboxylic acid, diphenylsulfonedicarboxylic acid, diphenyletherdicarboxylic acid, alkyl esters or halides of these acids, and bis (p-carboxyphenyl). Examples thereof include aromatic dicarboxylic acids such as methane and 4,4′-sulfonyldibenzoic acid, and aliphatic dicarboxylic acids such as adipic acid, azelaic acid and sebacic acid. The dicarboxylic acid may be a mixture of two or more.

またジオール成分としては、例えば、エチレングリコール、プロピレングリコール、テトラメチレングリコール、ペンタメチレングリコール、2,2−ジメチルトリメチレングリコール、ヘキサメチレングリコール、デカメチレングリコール、p−キシレングリコール、シクロヘキサンジメタノール、ポリ(エチレンオキシド)グリコール、ポリ(1,2−プロピレンオキシド)グリコール、ポリ(1,3−プロピレンオキシド)グリコール、ポリ(テトラメチレンオキシド)グリコール等が挙げられる。ジオールは2種以上の混合物であっても良い。   Examples of the diol component include ethylene glycol, propylene glycol, tetramethylene glycol, pentamethylene glycol, 2,2-dimethyltrimethylene glycol, hexamethylene glycol, decamethylene glycol, p-xylene glycol, cyclohexanedimethanol, and poly ( Examples thereof include ethylene oxide) glycol, poly (1,2-propylene oxide) glycol, poly (1,3-propylene oxide) glycol, and poly (tetramethylene oxide) glycol. The diol may be a mixture of two or more.

ポリエステル系樹脂(A)の代表的な例としては、ポリブチレンテレフタレート、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、ポリブチレンナフタレート等のほか、ポリエチレンイソフタレート・テレフタレート、ポリブチレンイソフタレート・テレフタレート、ポリエチレンテレフタレート・ナフタレート、ポリブチレンテレフタレート・ナフタレート等のような共重合ポリエステルなどが挙げられるが、特にポリエチレンテレフタレート樹脂が好ましい。市販の樹脂として、例えば、バイロペット(東洋紡社製、商品名)、ベルペット(鐘紡社製、商品名)、帝人PET(帝人社製、商品名)が挙げられる。ポリエステル系樹脂(A)は単独あるいは2種以上の混合系でもよい。   Representative examples of the polyester resin (A) include polybutylene terephthalate, polyethylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, etc., as well as polyethylene isophthalate terephthalate, polybutylene isophthalate terephthalate, polyethylene terephthalate naphthalate. And a copolymerized polyester such as polybutylene terephthalate / naphthalate, etc., and a polyethylene terephthalate resin is particularly preferred. Commercially available resins include, for example, Viropet (trade name, manufactured by Toyobo), Bellpet (trade name, manufactured by Kanebo), and Teijin PET (trade name, manufactured by Teijin Limited). The polyester resin (A) may be a single resin or a mixture of two or more resins.

本発明に用いられる前記樹脂(B)における、ポリエステル系樹脂と反応性を有する官能基として、エポキシ基、オキサゾリル基、アミノ基及び無水マレイン酸残基からなる群から選ばれる少なくとも1つの基を含有することが好ましく、特にエポキシ基を含有することが好ましい。樹脂(B)は、同一分子内で該官能基含有単量体成分を0.05〜30質量部有することが好ましく、0.1〜20質量部有することがより好ましい。該官能基を含有する単量体成分量が少なすぎると本発明の効果を発揮しにくく、また多すぎると前記ポリエステル系樹脂(A)との過反応によるゲル化物が発生しやすく、好ましくない。
このような樹脂(B)としては、オレフィン成分とエポキシ基含有化合物成分からなる共重合体であることが好ましい。また、アクリル成分又はビニル成分の中、少なくとも1種類以上の成分とオレフィン成分及びエポキシ基含有化合物成分からなる共重合体であってもよい。
The resin (B) used in the present invention contains at least one group selected from the group consisting of an epoxy group, an oxazolyl group, an amino group and a maleic anhydride residue as a functional group reactive with the polyester resin. It is particularly preferable to contain an epoxy group. The resin (B) preferably has 0.05 to 30 parts by mass, more preferably 0.1 to 20 parts by mass of the functional group-containing monomer component in the same molecule. If the amount of the monomer component containing the functional group is too small, the effect of the present invention is not easily exerted. If the amount is too large, a gelled product due to an overreaction with the polyester resin (A) is apt to be generated, which is not preferable.
Such a resin (B) is preferably a copolymer comprising an olefin component and an epoxy group-containing compound component. Further, a copolymer composed of at least one or more components of an acrylic component or a vinyl component, an olefin component and an epoxy group-containing compound component may be used.

前記の共重合体(B)を構成するオレフィン成分としては、例えば、エチレン、プロピレン、ブテン−1、ペンテン−1、4−メチルペンテン−1、イソブチレン、ヘキセン−1、デセン−1、オクテン−1、1,4−ヘキサジエン、ジシクロペンタジエン等が挙げられ、好ましくはエチレン、プロピレン、ブテン−1が用いられる。またこれらの成分は単独あるいは2種以上を使用してもよい。
また、アクリル成分としては、例えば、アクリル酸、アクリル酸メチル、アクリル酸エチル、アクリル酸n−プロピル、アクリル酸イソプロピル、アクリル酸n−ブチル、アクリル酸t−ブチル、アクリル酸イソブチル、メタクリル酸メチル、メタクリル酸エチル、メタクリル酸ブチル等が挙げられる。ビニル成分としては、例えば、酢酸ビニル、プロピオン酸ビニル、酪酸ビニル、塩化ビニル、ビニルアルコール、スチレン等が挙げられる。中でも、アクリル酸メチル、メタクリル酸メチルが好ましい。またこれらの成分は単独あるいは2種以上を使用してもよい。
Examples of the olefin component constituting the copolymer (B) include ethylene, propylene, butene-1, pentene-1, 4-methylpentene-1, isobutylene, hexene-1, decene-1, and octene-1. Examples thereof include 1,4-hexadiene and dicyclopentadiene, and ethylene, propylene, and butene-1 are preferably used. These components may be used alone or in combination of two or more.
As the acrylic component, for example, acrylic acid, methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, t-butyl acrylate, isobutyl acrylate, methyl methacrylate, Examples include ethyl methacrylate and butyl methacrylate. Examples of the vinyl component include vinyl acetate, vinyl propionate, vinyl butyrate, vinyl chloride, vinyl alcohol, and styrene. Among them, methyl acrylate and methyl methacrylate are preferred. These components may be used alone or in combination of two or more.

共重合体(B)を構成するエポキシ基含有化合物としては、例えば、下記一般式(1)に示される不飽和カルボン酸のグリシジルエステル化合物が挙げられる。   Examples of the epoxy group-containing compound constituting the copolymer (B) include a glycidyl ester compound of an unsaturated carboxylic acid represented by the following general formula (1).

Figure 2004193117
Figure 2004193117

(式中、Rは炭素数2〜18のアルケニル基を、Xはカルボニルオキシ基を表す。)
不飽和カルボン酸グリシジルエステルの具体的な例としては、グリシジルアクリレート、グリシジルメタクリレート、イタコン酸グリシジルエステル等が挙げられ、中でもグリシジルメタクリレートが好ましい。
(In the formula, R represents an alkenyl group having 2 to 18 carbon atoms, and X represents a carbonyloxy group.)
Specific examples of the unsaturated glycidyl carboxylate include glycidyl acrylate, glycidyl methacrylate, glycidyl itaconate, and the like, with glycidyl methacrylate being preferred.

上記の共重合体(B)の代表的な例としては、エチレン/グリシジルメタアクリレート共重合体、エチレン/グリシジルメタアクリレート/アクリル酸メチル3元共重合体、エチレン/グリシジルメタアクリレート/酢酸ビニル3元共重合体、エチレン/グリシジルメタアクリレート/アクリル酸メチル/酢酸ビニル4元共重合体などが挙げられる。中でもエチレン/グリシジルメタアクリレート共重合体、エチレン/グリシジルメタアクリレート/アクリル酸メチル3元共重合体が好ましい。市販の樹脂では、例えば、ボンドファースト(住友化学工業社製、商品名)、ロタダー(アトフィナ社製、商品名)が挙げられる。   Representative examples of the copolymer (B) include ethylene / glycidyl methacrylate copolymer, ethylene / glycidyl methacrylate / methyl acrylate terpolymer, and ethylene / glycidyl methacrylate / vinyl acetate terpolymer. Copolymers such as ethylene / glycidyl methacrylate / methyl acrylate / vinyl acetate quaternary copolymer and the like. Among them, ethylene / glycidyl methacrylate copolymer and ethylene / glycidyl methacrylate / methyl acrylate terpolymer are preferable. Commercially available resins include, for example, Bond First (trade name, manufactured by Sumitomo Chemical Co., Ltd.) and Rotader (trade name, manufactured by Atofina Co., Ltd.).

また、本発明における共重合体(B)は、ブロック共重合体、グラフト共重合体、ランダム共重合体、交互共重合体のいずれであっても良い。樹脂(B)は、例えばエチレン/プロピレン/ジエンのランダム共重合体、エチレン/ジエン/エチレンのブロック共重合体、プロピレン/ジエン/プロピレンのブロック共重合体、スチレン/ジエン/エチレンのブロック共重合体、スチレン/ジエン/プロピレンのブロック共重合体、スチレン/ジエン/スチレンのブロック共重合体に対し、ジエン成分を一部エポキシ化したもの又はグリシジルメタクリル酸のようなエポキシ含有化合物をグラフト変性したものであってもよい。また、これらの共重合体は、熱安定性を上げるため、水素添加されたものも好ましい。   Further, the copolymer (B) in the present invention may be any of a block copolymer, a graft copolymer, a random copolymer, and an alternating copolymer. The resin (B) is, for example, a random copolymer of ethylene / propylene / diene, a block copolymer of ethylene / diene / ethylene, a block copolymer of propylene / diene / propylene, and a block copolymer of styrene / diene / ethylene. A styrene / diene / propylene block copolymer or a styrene / diene / styrene block copolymer obtained by partially epoxidizing a diene component or graft-modified an epoxy-containing compound such as glycidyl methacrylic acid. There may be. Further, these copolymers are preferably hydrogenated in order to increase the thermal stability.

本発明における共重合体(B)の含有量は、ポリエステル系樹脂(A)100質量部に対し、好ましくは1〜20質量部、より好ましくは1〜10質量部である。この含有量が少なすぎると本発明の効果を発揮しにくく、また多すぎると耐熱性が低下することがあり、好ましくない。   The content of the copolymer (B) in the present invention is preferably 1 to 20 parts by mass, more preferably 1 to 10 parts by mass, based on 100 parts by mass of the polyester resin (A). If the content is too small, the effect of the present invention is hardly exhibited, and if it is too large, heat resistance may be reduced, which is not preferable.

また、本発明の効果を損なわない範囲で、樹脂(B)と良好な相溶性を表わすオレフィン系樹脂(C)を添加してもよい。
本発明におけるオレフィン系樹脂(C)は、オレフィン単独重合体またはオレフィン系共重合体であることが好ましく、オレフィンと共重合可能なアクリル成分またはビニル成分を少なくとも1種類以上含有してなる共重合体であってもよい。
Further, an olefin resin (C) exhibiting good compatibility with the resin (B) may be added as long as the effects of the present invention are not impaired.
The olefin resin (C) in the present invention is preferably an olefin homopolymer or an olefin copolymer, and is a copolymer containing at least one acrylic component or vinyl component copolymerizable with an olefin. It may be.

上記、オレフィン系樹脂(C)のオレフィン成分としては、例えば、エチレン、プロピレン、ブテン−1、ペンテン−1、4−メチルペンテン−1、イソブチレン、ヘキセン−1、デセン−1、オクテン−1、1,4−ヘキサジエン、ジシクロペンタジエン等が挙げられる。好ましくはエチレン、プロピレン、ブテン−1が用いられる。またこれらのオレフィン成分は単独あるいは2種以上を使用してもよい。
また、アクリル成分としては、例えば、アクリル酸、アクリル酸メチル、アクリル酸エチル、アクリル酸n−プロピル、アクリル酸イソプロピル、アクリル酸n−ブチル、アクリル酸t−ブチル、アクリル酸イソブチル、メタクリル酸メチル、メタクリル酸エチル、メタクリル酸ブチル等が挙げられる。ビニル成分としては、例えば、酢酸ビニル、プロピオン酸ビニル、酪酸ビニル、塩化ビニル、ビニルアルコール、スチレン等が挙げられる。中でも、アクリル酸メチル、メタクリル酸メチル、が好ましい。またこれらの成分は単独あるいは2種以上を使用してもよい。
As the olefin component of the olefin resin (C), for example, ethylene, propylene, butene-1, pentene-1, 4-methylpentene-1, isobutylene, hexene-1, decene-1, octene-1, 1 , 4-hexadiene, dicyclopentadiene and the like. Preferably, ethylene, propylene and butene-1 are used. These olefin components may be used alone or in combination of two or more.
As the acrylic component, for example, acrylic acid, methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, t-butyl acrylate, isobutyl acrylate, methyl methacrylate, Examples include ethyl methacrylate and butyl methacrylate. Examples of the vinyl component include vinyl acetate, vinyl propionate, vinyl butyrate, vinyl chloride, vinyl alcohol, and styrene. Among them, methyl acrylate and methyl methacrylate are preferred. These components may be used alone or in combination of two or more.

上記のオレフィン系樹脂(C)の代表的な例として、ポリエチレン、ポリプロピレン、ポリブテン−1、ポリイソブチレン等の単独重合体、エチレン/プロピレン、エチレン/プロピレン/ジエン、エチレン/メタクリル酸メチル、エチレン/酢酸ビニル、エチレン/メタクリル酸メチル/酢酸ビニル等の共重合体や、エチレン/ジエン/エチレン、プロピレン/ジエン/プロピレン、スチレン/ジエン/エチレン、スチレン/ジエン/プロピレン、スチレン/ジエン/スチレン等のブロック共重合体、又はこれらに水素添加されたものが挙げられる。中でもエチレン/メタクリル酸メチル共重合体を用いることが好ましい。市販の樹脂としては、例えば、アクリフト(住友化学工業社製、商品名)、ロトリル(アトフィナ社製、商品名)が挙げられる。   Representative examples of the olefin resin (C) include homopolymers such as polyethylene, polypropylene, polybutene-1, and polyisobutylene, ethylene / propylene, ethylene / propylene / diene, ethylene / methyl methacrylate, and ethylene / acetic acid. Vinyl, copolymers such as ethylene / methyl methacrylate / vinyl acetate, and block copolymers such as ethylene / diene / ethylene, propylene / diene / propylene, styrene / diene / ethylene, styrene / diene / propylene, and styrene / diene / styrene. Polymers and those obtained by hydrogenating them are mentioned. Among them, it is preferable to use an ethylene / methyl methacrylate copolymer. Examples of commercially available resins include Acryft (trade name, manufactured by Sumitomo Chemical Co., Ltd.) and Lotril (trade name, manufactured by Atofina Co., Ltd.).

本発明におけるオレフィン系樹脂(C)の含有量は、ポリエステル系樹脂(A)100質量部に対し、好ましくは0〜20質量部、より好ましくは0〜10質量部である。共重合体(B)とオレフィン系樹脂(C)との比率は、質量基準で、通常(5:95)〜(100:0)程度、好ましくは(10:90)〜(100:0)程度である。   The content of the olefin resin (C) in the present invention is preferably 0 to 20 parts by mass, more preferably 0 to 10 parts by mass, based on 100 parts by mass of the polyester resin (A). The ratio of the copolymer (B) to the olefin-based resin (C) is usually about (5:95) to (100: 0), preferably about (10:90) to (100: 0) on a mass basis. It is.

分散相としての前記共重合体(B)及びオレフィン系樹脂(C)の分散粒の大きさは特に制限はないが、好ましくは平均粒径0.05〜3μm、より好ましくは平均粒径0.1〜2.0μmである。
また、本発明の樹脂分散体は、前記ポリエステル系樹脂(A)と前記共重合体(B)と更に必要に応じてオレフィン系樹脂(C)とを通常の2軸押出機、コニーダーなどの混練機で溶融配合して得ることができる。配合方法としては、樹脂(A)と樹脂(B)と更に必要に応じて樹脂(C)とを同時に配合する方法、または樹脂(B)と必要に応じて樹脂(C)とを先に溶融配合し、順次に樹脂(A)と配合する方法であってもよい。更に巻線としての基本特性を損なわない範囲で、無機充填剤、例えばタルク、二酸化チタン、水酸化アルミニウム、酸化亜鉛、シリカ粉末等を添加してもよい。無機充填剤を添加することによって高周波数特性を向上することも可能である。
The size of the dispersed particles of the copolymer (B) and the olefin-based resin (C) as the dispersed phase is not particularly limited, but is preferably 0.05 to 3 μm in average particle size, and more preferably 0.1 to 3 μm in average particle size. 1 to 2.0 μm.
Further, the resin dispersion of the present invention is obtained by kneading the polyester resin (A), the copolymer (B), and, if necessary, the olefin resin (C) with a usual twin screw extruder, a co-kneader or the like. It can be obtained by melt blending with a machine. As a compounding method, a method of simultaneously mixing the resin (A) and the resin (B) and, if necessary, the resin (C), or a method of melting the resin (B) and the resin (C) first if necessary. It may be a method of compounding and sequentially compounding with the resin (A). Further, an inorganic filler such as talc, titanium dioxide, aluminum hydroxide, zinc oxide, and silica powder may be added as long as the basic characteristics of the winding are not impaired. It is also possible to improve high frequency characteristics by adding an inorganic filler.

また、必要に応じて、滑剤例えばステアリン酸類、ワックス類、低分子量ポリエチレン等や着色剤などを添加してもよい。滑剤を添加することによって、薄膜押出被覆過程における導体張力の低下など加工性を向上することも可能である。
本発明における薄膜絶縁層の1層の厚さは、特に制限されるものではないが、10〜100μmであることが好ましく、20〜60μmであることがより好ましい。
更に、本発明において樹脂分散体による薄膜層を設けた1層又は2層被覆の外側に、機械的特性を強化するために、ポリアミド系樹脂を被覆した2層又は3層被覆を行ってもよい。この場合ポリアミド樹脂としては、例えば、6,6−ナイロン、6−ナイロン、6,10−ナイロン、ポリヘキサメチレンテレフタルアミド、ポリノナメチレンテレフタルアミド等が挙げられる。
If necessary, lubricants such as stearic acids, waxes, low molecular weight polyethylene and the like, coloring agents and the like may be added. By adding a lubricant, it is possible to improve workability such as a decrease in conductor tension during the thin film extrusion coating process.
Although the thickness of one layer of the thin film insulating layer in the present invention is not particularly limited, it is preferably from 10 to 100 μm, more preferably from 20 to 60 μm.
Furthermore, in order to enhance the mechanical properties, a two-layer or three-layer coating with a polyamide resin may be performed outside the one-layer or two-layer coating provided with the thin film layer of the resin dispersion in the present invention. . In this case, examples of the polyamide resin include 6,6-nylon, 6-nylon, 6,10-nylon, polyhexamethylene terephthalamide, and polynonamethylene terephthalamide.

以下、本発明を実施例に基づきさらに詳細に説明するが、本発明はこれらに制限されるものではない。
実施例中の樹脂分散体は全て30mmφ混練用2軸押出機で混練して得たものである。
Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto.
All resin dispersions in the examples were obtained by kneading with a 30 mmφ kneading twin screw extruder.

(実施例1)
PET(帝人化成(株)製、商品名:TR−8550)100質量部に対し、エチレン/グリシジルメタクリレート/メチルアクリレート共重合体樹脂(住友化学工業社製、商品名:ボンドファースト7M、グリシジルメタクリレート=6質量%)2質量部を配合し、前記のように混練して、PETが連続相でエチレン/グリシジルメタクリレート/メチルアクリレート共重合体が分散相(分散粒の平均径0.14μm)である樹脂分散体を得た。
得られた樹脂分散体を30mmφ押出機(押出条件210〜280℃)を用いて、予め180℃に加熱された0.4mmφの銅線上に被覆し本発明絶縁電線を得た。
(Example 1)
For 100 parts by mass of PET (trade name: TR-8550, manufactured by Teijin Chemicals Limited), ethylene / glycidyl methacrylate / methyl acrylate copolymer resin (trade name: Bondfast 7M, glycidyl methacrylate; manufactured by Sumitomo Chemical Co., Ltd.) 6% by mass), kneaded as described above, and a resin in which PET is a continuous phase and ethylene / glycidyl methacrylate / methyl acrylate copolymer is a dispersed phase (average particle diameter of dispersed particles is 0.14 μm). A dispersion was obtained.
The obtained resin dispersion was coated on a 0.4 mmφ copper wire previously heated to 180 ° C using a 30 mmφ extruder (extrusion conditions: 210 to 280 ° C) to obtain the insulated wire of the present invention.

(実施例2)
PET100質量部にエチレン/グリシジルメタクリレート/メチルアクリレート共重合体樹脂5質量部を配合し、前記のように混練して、PETが連続相でエチレン/グリシジルメタクリレート/メチルアクリレート共重合体が分散相(分散粒の平均径0.18μm)である樹脂分散体を得た。
得られた樹脂分散体を使用した以外はすべて実施例1と同様にして本発明絶縁電線を得た。
(Example 2)
5 parts by mass of an ethylene / glycidyl methacrylate / methyl acrylate copolymer resin is blended with 100 parts by mass of PET and kneaded as described above, and the PET is a continuous phase and the ethylene / glycidyl methacrylate / methyl acrylate copolymer is a dispersed phase (dispersion). A resin dispersion having an average particle size of 0.18 μm) was obtained.
An insulated wire of the present invention was obtained in the same manner as in Example 1 except that the obtained resin dispersion was used.

(実施例3)
PET100質量部に対し、エチレン/グリシジルメタクリレート/メチルアクリレート共重合体樹脂10質量部を配合し、前記のように混練して、PETが連続相でエチレン/グリシジルメタクリレート/メチルアクリレート共重合体が分散相(分散粒の平均径0.24μm)である樹脂分散体を得た。
得られた樹脂分散体を使用した以外はすべて実施例1と同様にして本発明絶縁電線を得た。
(Example 3)
10 parts by mass of ethylene / glycidyl methacrylate / methyl acrylate copolymer resin is blended with 100 parts by mass of PET and kneaded as described above, and PET is a continuous phase and ethylene / glycidyl methacrylate / methyl acrylate copolymer is a dispersed phase. (A resin dispersion having an average diameter of dispersed particles of 0.24 μm) was obtained.
An insulated wire of the present invention was obtained in the same manner as in Example 1 except that the obtained resin dispersion was used.

(実施例4)
PET100質量部に対し、エチレン/グリシジルメタクリレート/メチルアクリレート共重合体樹脂10質量部を配合し、前記のように混練して、PETが連続相でエチレン/グリシジルメタクリレート/メチルアクリレート共重合体が分散相(分散粒の平均径0.24μm)である樹脂分散体を得た。
線径0.15mmの銅線に日立化成社製絶縁ワニスWD−4305(商品名)を8μm厚に被覆した絶縁線心7本を撚り合わせた線の上に、得られた樹脂分散体を被覆し本発明絶縁電線を得た。
(Example 4)
10 parts by mass of ethylene / glycidyl methacrylate / methyl acrylate copolymer resin is blended with 100 parts by mass of PET and kneaded as described above, and PET is a continuous phase and ethylene / glycidyl methacrylate / methyl acrylate copolymer is a dispersed phase. (A resin dispersion having an average diameter of dispersed particles of 0.24 μm) was obtained.
The obtained resin dispersion is coated on a wire obtained by twisting seven insulated wires obtained by coating a copper wire having a wire diameter of 0.15 mm with an insulating varnish WD-4305 (trade name) manufactured by Hitachi Chemical Co., Ltd. to a thickness of 8 μm. Then, the insulated wire of the present invention was obtained.

(実施例5)
PET100質量部にエチレン/グリシジルメタクリレート/メチルアクリレート共重合体15質量部を配合し、前記のように混練して、PETが連続相でエチレン/グリシジルメタクリレート/メチルアクリレート共重合体が分散相(分散粒の平均径0.29μm)である樹脂分散体を得た。
得られた樹脂分散体を使用した以外はすべて実施例1と同様にして本発明絶縁電線を得た。
(Example 5)
15 parts by mass of an ethylene / glycidyl methacrylate / methyl acrylate copolymer are blended with 100 parts by mass of PET and kneaded as described above, and the PET is a continuous phase and the ethylene / glycidyl methacrylate / methyl acrylate copolymer is a dispersed phase (dispersed particles). (Average diameter of 0.29 μm).
An insulated wire of the present invention was obtained in the same manner as in Example 1 except that the obtained resin dispersion was used.

(実施例6)
PET100質量部にエチレン/グリシジルメタクリレート/メチルアクリレート共重合体樹脂20質量部を配合し、前記のように混練して、PETが連続相でエチレン/グリシジルメタクリレート/メチルアクリレート共重合体が分散相(分散粒の平均径、0.35μm)である樹脂分散体を得た。
得られた樹脂分散体を使用した以外はすべて実施例1と同様にして本発明絶縁電線を得た。
(Example 6)
20 parts by mass of an ethylene / glycidyl methacrylate / methyl acrylate copolymer resin is blended with 100 parts by mass of PET and kneaded as described above, and the PET is a continuous phase and the ethylene / glycidyl methacrylate / methyl acrylate copolymer is a dispersed phase (dispersion). A resin dispersion having an average particle size of 0.35 μm) was obtained.
An insulated wire of the present invention was obtained in the same manner as in Example 1 except that the obtained resin dispersion was used.

(実施例7)
PET100質量部にエチレン/グリシジルメタクリレート共重合体(住友化学工業社製、商品名:ボンドファーストE、グリシジルメタクリレート=12質量%)5質量部を配合し、前記のように混練して、PETが連続相でエチレン/グリシジルメタクリレート共重合体が分散相(分散粒の平均径0.16μm)である樹脂分散体を得た。
得られた樹脂分散体を使用した以外はすべて実施例1と同様にして本発明絶縁電線を得た。
(Example 7)
5 parts by mass of an ethylene / glycidyl methacrylate copolymer (manufactured by Sumitomo Chemical Co., Ltd., trade name: Bondfast E, glycidyl methacrylate = 12% by mass) is blended with 100 parts by mass of PET, and the mixture is kneaded as described above to make PET continuous. A resin dispersion was obtained in which the ethylene / glycidyl methacrylate copolymer was a dispersed phase (average diameter of dispersed particles: 0.16 μm).
An insulated wire of the present invention was obtained in the same manner as in Example 1 except that the obtained resin dispersion was used.

(実施例8)
PET100質量部にエチレン/グリシジルメタクリレート/メチルアクリレート共重合体(住友化学工業社製、商品名:ボンドファースト7M、グリシジルメタクリレート=6質量%)5質量部とエチレン/メタクリル酸メチル共重合体(住友化学工業社製、商品名:アクリフトWK307)5質量部を同時に配合し、前記のように混練して、PETが連続相でエチレン/グリシジルメタクリレート/メチルアクリレート共重合体とエチレン/メタクリル酸メチル共重合体が分散相(分散粒の平均径、0.37μm)である樹脂分散体を得た。
得られた樹脂分散体を使用した以外はすべて実施例1と同様にして本発明絶縁電線を得た。
(Example 8)
5 parts by mass of an ethylene / glycidyl methacrylate / methyl acrylate copolymer (manufactured by Sumitomo Chemical Co., Ltd., trade name: Bondfast 7M, glycidyl methacrylate = 6% by mass) and 100 parts by mass of PET and an ethylene / methyl methacrylate copolymer (Sumitomo Chemical Co., Ltd.) 5 parts by mass of Aklift WK307 manufactured by Kogyo Co., Ltd.) are simultaneously blended and kneaded as described above, and PET is a continuous phase of ethylene / glycidyl methacrylate / methyl acrylate copolymer and ethylene / methyl methacrylate copolymer. Is a dispersed phase (average diameter of dispersed particles, 0.37 μm).
An insulated wire of the present invention was obtained in the same manner as in Example 1 except that the obtained resin dispersion was used.

(比較例1)
予め180℃に加熱された0.4mmφの銅線上にPETを30mmφの押出機(押出条件210〜280℃)を用いて押出被覆し比較例絶縁電線を得た。
(比較例2)
PET100質量部にエチレン/アクリル酸共重合体であるEAA(米国ダウケミカル社製、商品名)樹脂10質量部を混合して樹脂組成物を得た。
得られた樹脂組成物を使用した以外はすべて比較例1と同様にして比較例絶縁電線を得た。
(Comparative Example 1)
PET was extruded and coated on a 0.4 mmφ copper wire preheated to 180 ° C. using a 30 mmφ extruder (extrusion conditions: 210 to 280 ° C.) to obtain a comparative insulated wire.
(Comparative Example 2)
A resin composition was obtained by mixing 100 parts by mass of PET with 10 parts by mass of EAA (trade name, manufactured by Dow Chemical Company, USA) resin which is an ethylene / acrylic acid copolymer.
A comparative example insulated wire was obtained in the same manner as in Comparative Example 1 except that the obtained resin composition was used.

本発明絶縁電線及び比較例絶縁電線についてそれぞれ下記のようにして特性を測定した。結果は表1に示す通りである。
(1)絶縁破壊電圧
JIS C 3003-1999 10.の2個撚り法の試料作製条件に準じて電線と銅線とのツイストペアを作製し、製造直後の絶縁破壊電圧を測定した。
(2)高温絶縁破壊電圧
JIS C 3003-1999 10.の2個撚り法の試料作製条件に準じて電線と銅線とのツイストペアを作製し、その状態で100℃、1時間放置した後、100℃中にて絶縁破壊電圧を測定した。
(3)絶縁破壊電圧の経時変化
絶縁破壊電圧の経時変化に対する加速試験として、50℃、90%RHで1週間放置した電線をJIS C 3003-1999 10.の2個撚り法の試料作製条件に準じて電線と銅線とのツイストペアを作製し、絶縁破壊電圧を測定した。
(4)可とう性の経時変化
可とう性の経時変化に対する加速試験として、50℃、90%RHで1週間放置した電線をJIS C 3003-1999 7.に準じて、クレージング発生の有無を確認した。
(5)軟化試験
JIS C 3003-1999 11.に準じて軟化温度を測定した。
The characteristics of the insulated wire of the present invention and the insulated wire of the comparative example were measured as follows. The results are as shown in Table 1.
(1) Dielectric breakdown voltage JIS C 3003 -1999 10. A twisted pair of an electric wire and a copper wire was prepared according to the sample preparation conditions of the two-strand method, and the dielectric breakdown voltage immediately after the production was measured.
(2) High temperature dielectric breakdown voltage JIS C 3003-1999 A twisted pair of an electric wire and a copper wire was prepared according to the sample preparation conditions of the two-strand method described above, and after leaving it at 100 ° C. for 1 hour in that state, the dielectric breakdown voltage was measured at 100 ° C.
(3) Time-dependent change in dielectric breakdown voltage As an accelerated test for the time-dependent change in dielectric breakdown voltage, an electric wire left at 50 ° C. and 90% RH for one week was subjected to JIS C 3003 -1999 . A twisted pair of an electric wire and a copper wire was prepared according to the sample preparation conditions of the two-strand method, and the dielectric breakdown voltage was measured.
(4) Change with time of flexibility As an accelerated test for change with time of flexibility, an electric wire left at 50 ° C. and 90% RH for one week was JIS C 3003 -1999 7. The presence or absence of crazing was confirmed in accordance with the above.
(5) Softening test JIS C 3003 -1999 11. The softening temperature was measured according to the above.

Figure 2004193117
Figure 2004193117

表1から、実施例1〜8で得られた絶縁電線は、クレージング発生による絶縁破壊電圧の低下を抑制すると共に、比較例1又は2と比べて高温絶縁破壊電圧の優れた値を得ることができたことがわかる。   From Table 1, the insulated wires obtained in Examples 1 to 8 can suppress a decrease in the breakdown voltage due to the occurrence of crazing, and can obtain an excellent value of the high-temperature breakdown voltage as compared with Comparative Example 1 or 2. You can see that it was done.

(実施例9)
(A)PET100質量部に対し、(B)エチレン/グリシジルメタクリレート/メチルアクリレート共重合体樹脂(住友化学工業社製、商品名:ボンドファースト7M、グリシジルメタクリレート=6質量%)6質量部と(C)エチレン/メタクリル酸メチル共重合体(住友化学工業社製 商品名アクリフトWK307)9質量部を同時に配合し、PETが連続相でエチレン/グリシジルメタクリレート/メチルアクリレート共重合体とエチレン/メタクリル酸メチル共重合体が分散相である樹脂分散体(分散粒の平均径、0.50μm)を得た。
(Example 9)
(A) 6 parts by mass of ethylene / glycidyl methacrylate / methyl acrylate copolymer resin (manufactured by Sumitomo Chemical Co., Ltd., trade name: Bondfast 7M, glycidyl methacrylate = 6% by mass) and (C) ) 9 parts by mass of ethylene / methyl methacrylate copolymer (trade name: Aklift WK307 manufactured by Sumitomo Chemical Co., Ltd.) are simultaneously blended, and PET is a continuous phase in which ethylene / glycidyl methacrylate / methyl acrylate copolymer and ethylene / methyl methacrylate copolymer are mixed. A resin dispersion in which the polymer was a dispersed phase (average diameter of dispersed particles, 0.50 μm) was obtained.

(実施例10)
(A)PET100質量部に対し、(B)エチレン/グリシジルメタクリレート/メチルアクリレート共重合体樹脂7.5質量部と(C)エチレン/メタクリル酸メチル共重合体7.5質量部を同時に配合し、PETが連続相でエチレン/グリシジルメタクリレート/メチルアクリレート共重合体とエチレン/メタクリル酸メチル共重合体が分散相である樹脂分散体(分散粒の平均径、0.45μm)を得た。
(Example 10)
For (A) 100 parts by mass of PET, 7.5 parts by mass of (B) ethylene / glycidyl methacrylate / methyl acrylate copolymer resin and 7.5 parts by mass of (C) ethylene / methyl methacrylate copolymer are simultaneously blended, and PET is mixed. A resin dispersion in which the ethylene / glycidyl methacrylate / methyl acrylate copolymer and the ethylene / methyl methacrylate copolymer were the dispersed phases in the continuous phase (average diameter of dispersed particles, 0.45 μm) was obtained.

(実施例11)
(A)PET100質量部に対し、(B)エチレン/グリシジルメタクリレート/メチルアクリレート共重合体樹脂9質量部と(C)エチレン/メタクリル酸メチル共重合体6質量部を同時に配合し、PETが連続相でエチレン/グリシジルメタクリレート/メチルアクリレート共重合体とエチレン/メタクリル酸メチル共重合体が分散相である樹脂分散体(分散粒の平均径、0.34μm)を得た。
(Example 11)
(A) 9 parts by weight of ethylene / glycidyl methacrylate / methyl acrylate copolymer resin and 6 parts by weight of (C) ethylene / methyl methacrylate copolymer are simultaneously blended with 100 parts by weight of PET to form a continuous phase of PET. As a result, a resin dispersion in which an ethylene / glycidyl methacrylate / methyl acrylate copolymer and an ethylene / methyl methacrylate copolymer were a dispersed phase (average diameter of dispersed particles, 0.34 μm) was obtained.

前記実施例2、5及び6と、実施例9〜11で得られた各樹脂分散体を押し出して、フィルム押出成形品(厚さ約50μm)を得た。得られた成形品におけるブツ発生の有無を目視で観察した。結果は表2に示す通りである。   Each of the resin dispersions obtained in Examples 2, 5 and 6 and Examples 9 to 11 was extruded to obtain a film extruded product (thickness: about 50 μm). The presence or absence of occurrence of bumps in the obtained molded product was visually observed. The results are as shown in Table 2.

Figure 2004193117
Figure 2004193117

表2から、実施例2、9〜11で得られた樹脂分散体は、微細な分散相が形成されるとともに、実施例5及び6と比べて、押出成形加工時、ブツ発生のない表面状態の優れたフィルムを得ることができたことがわかる。   From Table 2, the resin dispersions obtained in Examples 2 and 9 to 11 have a fine dispersed phase formed and have a surface state free from bumps during extrusion molding as compared with Examples 5 and 6. It was found that a film excellent in the above was obtained.

Claims (20)

導体上にポリエステル系樹脂(A)を連続相とし、ポリエステル系樹脂と反応性を有する官能基を含む樹脂(B)を分散相とする樹脂分散体よりなる薄膜絶縁層を被覆したことを特徴とする絶縁電線。   The present invention is characterized in that a thin-film insulating layer made of a resin dispersion having a polyester resin (A) as a continuous phase and a resin (B) having a functional group reactive with the polyester resin as a dispersed phase is coated on the conductor. Insulated wires. 導体上にポリエステル系樹脂(A)を連続相とし、ポリエステル系樹脂と反応性を有する官能基を含む樹脂(B)が平均粒径0.05〜3μmに分散された樹脂分散体よりなる薄膜絶縁層を被覆したことを特徴とする絶縁電線。   Thin-film insulation consisting of a resin dispersion in which a polyester resin (A) has a continuous phase on a conductor and a resin (B) containing a functional group reactive with the polyester resin is dispersed in an average particle size of 0.05 to 3 μm. An insulated electric wire characterized in that the layer is coated. 前記樹脂分散体が、前記ポリエステル系樹脂(A)100質量部に対し、前記樹脂(B)1〜20質量部を含有することを特徴とする請求項1又は2に記載の絶縁電線。   The insulated wire according to claim 1, wherein the resin dispersion contains 1 to 20 parts by mass of the resin (B) based on 100 parts by mass of the polyester-based resin (A). 導体上にポリエステル系樹脂(A)を連続相とし、ポリエステル系樹脂と反応性を有する官能基を含む樹脂(B)及びオレフィン系樹脂(C)を分散相とする樹脂分散体よりなる薄膜絶縁層を被覆したことを特徴とする絶縁電線。   A thin film insulating layer comprising a resin dispersion in which a polyester resin (A) is a continuous phase on a conductor and a resin (B) containing a functional group reactive with the polyester resin and an olefin resin (C) is a dispersed phase. An insulated wire characterized by being coated with. 導体上にポリエステル系樹脂(A)を連続相とし、ポリエステル系樹脂と反応性を有する官能基を含む樹脂(B)及びオレフィン系樹脂(C)がそれぞれ平均粒径0.05〜3μmに分散された樹脂分散体よりなる薄膜絶縁層を被覆したことを特徴とする絶縁電線。   The polyester resin (A) is a continuous phase on the conductor, and the resin (B) and the olefin resin (C) each containing a functional group reactive with the polyester resin are dispersed to an average particle size of 0.05 to 3 μm. An insulated wire coated with a thin film insulating layer made of a resin dispersion. 前記樹脂分散体が、前記ポリエステル系樹脂(A)100質量部に対し、前記樹脂(B)1〜20質量部、及び前記オレフィン系樹脂(C)0〜20質量部を含有することを特徴とする請求項4又は5に記載の絶縁電線。   The resin dispersion contains 1 to 20 parts by mass of the resin (B) and 0 to 20 parts by mass of the olefin resin (C) based on 100 parts by mass of the polyester resin (A). The insulated wire according to claim 4 or 5, wherein 前記樹脂分散体が、前記ポリエステル系樹脂(A)100質量部に対し、前記樹脂(B)1〜10質量部、前記オレフィン系樹脂(C)0〜10質量部を含有することを特徴とする請求項4又は5に記載の絶縁電線。   The resin dispersion is characterized by containing 1 to 10 parts by mass of the resin (B) and 0 to 10 parts by mass of the olefin resin (C) based on 100 parts by mass of the polyester resin (A). The insulated wire according to claim 4. 前記ポリエステル系樹脂(A)が、ジカルボン酸とジオールとの縮合反応により得られる重合体であることを特徴とする請求項1、2、4及び5のいずれか1項に記載の絶縁電線。   The insulated wire according to any one of claims 1, 2, 4 and 5, wherein the polyester resin (A) is a polymer obtained by a condensation reaction between a dicarboxylic acid and a diol. 前記樹脂(B)が、エポキシ基、オキサゾリル基、アミノ基及び無水マレイン酸残基からなる群から選択される少なくとも1種類の官能基を含有する樹脂であることを特徴とする請求項1、2、4及び5のいずれか1項に記載の絶縁電線。   3. The resin according to claim 1, wherein the resin (B) is a resin containing at least one functional group selected from the group consisting of an epoxy group, an oxazolyl group, an amino group and a maleic anhydride residue. The insulated wire according to any one of claims 4 and 5. 前記樹脂(B)が、オレフィン成分とエポキシ基含有化合物成分からなる共重合体であることを特徴とする請求項1、2、4及び5のいずれか1項に記載の絶縁電線。   The insulated wire according to any one of claims 1, 2, 4 and 5, wherein the resin (B) is a copolymer comprising an olefin component and an epoxy group-containing compound component. 前記樹脂(B)が、オレフィン成分と不飽和カルボン酸グリシジルエステル成分からなる共重合体であることを特徴とする請求項1、2、4及び5のいずれか1項に記載の絶縁電線。   The insulated wire according to any one of claims 1, 2, 4 and 5, wherein the resin (B) is a copolymer comprising an olefin component and an unsaturated carboxylic acid glycidyl ester component. 前記樹脂(B)が、アクリル成分又はビニル成分の中、少なくとも1種類以上の成分とオレフィン成分及びエポキシ基含有化合物成分からなる共重合体であることを特徴とする請求項1、2、4及び5のいずれか1項に記載の絶縁電線。   The resin (B) is a copolymer comprising at least one or more of an acrylic component or a vinyl component, and an olefin component and an epoxy group-containing compound component. 6. The insulated wire according to any one of items 5 to 5. 前記樹脂(B)が、アクリル成分又はビニル成分の中、少なくとも1種類以上の成分とオレフィン成分及び不飽和カルボン酸グリシジルエステル成分からなる共重合体であることを特徴とする請求項1、2、4及び5のいずれか1項に記載の絶縁電線。   3. The resin according to claim 1, wherein the resin (B) is a copolymer comprising at least one component among an acrylic component or a vinyl component, an olefin component, and an unsaturated carboxylic acid glycidyl ester component. 4. 6. The insulated wire according to any one of 4 and 5. 前記オレフィン系樹脂(C)が、アクリル成分又はビニル成分の中、少なくとも1種類以上の成分とオレフィン成分からなる共重合体であることを特徴とする請求項4又は5に記載の絶縁電線。   The insulated wire according to claim 4, wherein the olefin-based resin (C) is a copolymer including at least one or more components of an acrylic component or a vinyl component and an olefin component. ポリエステル系樹脂(A)を連続相とし、ポリエステル系樹脂と反応性を有する官能基を含む樹脂(B)を分散相とする樹脂分散体。   A resin dispersion comprising a polyester resin (A) as a continuous phase and a resin (B) containing a functional group reactive with the polyester resin as a dispersed phase. ポリエステル系樹脂(A)を連続相とし、ポリエステル系樹脂と反応性を有する官能基を含む樹脂(B)が平均粒径0.05μm〜3μmに分散された樹脂分散体。   A resin dispersion comprising a polyester resin (A) as a continuous phase and a resin (B) having a functional group reactive with the polyester resin dispersed in an average particle size of 0.05 μm to 3 μm. 前記ポリエステル系樹脂(A)100質量部に対し、前記樹脂(B)1〜10質量部を含有する請求項15又は16項に記載の樹脂分散体。   The resin dispersion according to claim 15 or 16, wherein the resin (B) is contained in an amount of 1 to 10 parts by mass based on 100 parts by mass of the polyester-based resin (A). ポリエステル系樹脂(A)を連続相とし、ポリエステル系樹脂と反応性を有する官能基を含む樹脂(B)及びオレフィン系樹脂(C)を分散相とする樹脂分散体。   A resin dispersion comprising a polyester resin (A) as a continuous phase and a resin (B) containing a functional group reactive with the polyester resin and an olefin resin (C) as a disperse phase. ポリエステル系樹脂(A)を連続相とし、ポリエステル系樹脂と反応性を有する官能基を含む樹脂(B)及びオレフィン系樹脂(C)が平均粒径0.05μm〜3μmに分散された樹脂分散体。   A resin dispersion comprising a polyester-based resin (A) as a continuous phase and a resin (B) containing a functional group reactive with the polyester-based resin (B) and an olefin-based resin (C) dispersed in an average particle size of 0.05 μm to 3 μm. 前記ポリエステル系樹脂(A)100質量部に対し、前記樹脂(B)1〜10質量部、前記オレフィン系樹脂(C)0〜10質量部を含有する請求項18又は19に記載の樹脂分散体。   The resin dispersion according to claim 18 or 19, wherein the resin dispersion contains 1 to 10 parts by mass of the resin (B) and 0 to 10 parts by mass of the olefin resin (C) based on 100 parts by mass of the polyester resin (A). .
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WO2005055249A1 (en) * 2003-12-04 2005-06-16 The Furukawa Electric Co., Ltd. Insulated electric wire
WO2007037417A1 (en) * 2005-09-30 2007-04-05 The Furukawa Electric Co., Ltd. Multilayered electric insulated wire and transformer using the same
WO2007114257A1 (en) * 2006-03-31 2007-10-11 The Furukawa Electric Co., Ltd. Multilayer insulated electric wire
JP2008202032A (en) * 2007-01-23 2008-09-04 Hitachi Cable Ltd Polyester resin composition and insulated wire using the same
JP2008243738A (en) * 2007-03-28 2008-10-09 Furukawa Electric Co Ltd:The Multi-layer electric insulated wire, and transformer using the same
JP2009004335A (en) * 2007-06-25 2009-01-08 Hitachi Cable Ltd Insulated wire, and manufacturing method thereof
EP2062938A1 (en) 2007-11-26 2009-05-27 Hitachi Cable, Ltd. Insulated Wire Using a Resin Composition
JP2009179782A (en) * 2008-02-01 2009-08-13 Hitachi Cable Ltd Heat-resistant resin composition and insulating wire produced by applying it
JP2009231025A (en) * 2008-03-21 2009-10-08 Furukawa Electric Co Ltd:The Multi-layer electric insulated wire and transformer using the same
EP2180017A2 (en) 2008-10-23 2010-04-28 Hitachi Cable Ltd. Polybutylene naphthalate-based resin composition and electric wire using the polybutylene naphthalate-based resin composition
WO2010047261A1 (en) * 2008-10-20 2010-04-29 古河電気工業株式会社 Multilayer insulated wire and transformer using same
CN102074293A (en) * 2010-12-15 2011-05-25 天津市华之阳特种线缆有限公司 Heat-resistant 155-DEG C enclosed motor lead wire
US8410208B2 (en) 2008-10-23 2013-04-02 Hitachi Cable, Ltd. Polybutylene naphthalate-based resin composition and electric cable using polybutylene naphthalate-based resin composition
JP2020515673A (en) * 2017-03-31 2020-05-28 ソルベイ スペシャルティ ポリマーズ ユーエスエー, エルエルシー Foam material containing polyphenylene sulfide polymer (PPS)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005055249A1 (en) * 2003-12-04 2005-06-16 The Furukawa Electric Co., Ltd. Insulated electric wire
US8518535B2 (en) 2005-09-30 2013-08-27 The Furukawa Electric., Ltd. Multilayer insulated wire and transformer using the same
WO2007037417A1 (en) * 2005-09-30 2007-04-05 The Furukawa Electric Co., Ltd. Multilayered electric insulated wire and transformer using the same
KR101099358B1 (en) 2005-09-30 2011-12-26 후루카와 덴키 고교 가부시키가이샤 Multilayered electric insulated wire and transformer using the same
JPWO2007037417A1 (en) * 2005-09-30 2009-04-16 古河電気工業株式会社 Multilayer insulated wire and transformer using the same
JP4579989B2 (en) * 2005-09-30 2010-11-10 古河電気工業株式会社 Multilayer insulated wire and transformer using the same
WO2007114257A1 (en) * 2006-03-31 2007-10-11 The Furukawa Electric Co., Ltd. Multilayer insulated electric wire
JP5184346B2 (en) * 2006-03-31 2013-04-17 古河電気工業株式会社 Multi-layer insulated wire
JP2008202032A (en) * 2007-01-23 2008-09-04 Hitachi Cable Ltd Polyester resin composition and insulated wire using the same
JP2008243738A (en) * 2007-03-28 2008-10-09 Furukawa Electric Co Ltd:The Multi-layer electric insulated wire, and transformer using the same
JP2009004335A (en) * 2007-06-25 2009-01-08 Hitachi Cable Ltd Insulated wire, and manufacturing method thereof
US9156979B2 (en) 2007-11-26 2015-10-13 Hitachi Metals, Ltd. Insulated wire using a resin composition
EP2062938A1 (en) 2007-11-26 2009-05-27 Hitachi Cable, Ltd. Insulated Wire Using a Resin Composition
JP2009179782A (en) * 2008-02-01 2009-08-13 Hitachi Cable Ltd Heat-resistant resin composition and insulating wire produced by applying it
JP2009231025A (en) * 2008-03-21 2009-10-08 Furukawa Electric Co Ltd:The Multi-layer electric insulated wire and transformer using the same
US8188370B2 (en) 2008-10-20 2012-05-29 Furukawa Electric Co., Ltd. Multilayer insulated electric wire and transformer using the same
WO2010047261A1 (en) * 2008-10-20 2010-04-29 古河電気工業株式会社 Multilayer insulated wire and transformer using same
US8410208B2 (en) 2008-10-23 2013-04-02 Hitachi Cable, Ltd. Polybutylene naphthalate-based resin composition and electric cable using polybutylene naphthalate-based resin composition
US8445785B2 (en) 2008-10-23 2013-05-21 Hitachi Cable, Ltd. Polybutylene naphthalate-based resin composition and electric wire using the polybutylene naphthalate-based resin composition
EP2180017A2 (en) 2008-10-23 2010-04-28 Hitachi Cable Ltd. Polybutylene naphthalate-based resin composition and electric wire using the polybutylene naphthalate-based resin composition
CN102074293A (en) * 2010-12-15 2011-05-25 天津市华之阳特种线缆有限公司 Heat-resistant 155-DEG C enclosed motor lead wire
JP2020515673A (en) * 2017-03-31 2020-05-28 ソルベイ スペシャルティ ポリマーズ ユーエスエー, エルエルシー Foam material containing polyphenylene sulfide polymer (PPS)

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