JPH02304808A - Insulated wire - Google Patents

Insulated wire

Info

Publication number
JPH02304808A
JPH02304808A JP1125396A JP12539689A JPH02304808A JP H02304808 A JPH02304808 A JP H02304808A JP 1125396 A JP1125396 A JP 1125396A JP 12539689 A JP12539689 A JP 12539689A JP H02304808 A JPH02304808 A JP H02304808A
Authority
JP
Japan
Prior art keywords
insulated wire
molecular weight
imide resin
polyamido
pts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP1125396A
Other languages
Japanese (ja)
Other versions
JP2683416B2 (en
Inventor
Isao Kamioka
上岡 勇夫
Akiyuki Yamamoto
山本 昭之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP1125396A priority Critical patent/JP2683416B2/en
Priority to EP89118324A priority patent/EP0365877B1/en
Priority to DE68920542T priority patent/DE68920542T2/en
Priority to KR1019890014235A priority patent/KR920009847B1/en
Publication of JPH02304808A publication Critical patent/JPH02304808A/en
Priority to US07/895,455 priority patent/US5219657A/en
Application granted granted Critical
Publication of JP2683416B2 publication Critical patent/JP2683416B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Paints Or Removers (AREA)
  • Organic Insulating Materials (AREA)
  • Insulated Conductors (AREA)

Abstract

PURPOSE:To acquire a solderable insulated wire simultaneously with the maintenance of the excellent heat. resistance of a polyamido-imide resin by spreading and baking an insulating coating prepared through the process of blending a proper quantity of specific stabilizing polyisocyanate with the polyamido-imide resin, on a conductor. CONSTITUTION:An insulating coating prepared through the process of adding 75 pts.wt. to 400 pts.wt. of a stabilizing polyisocyanate compound derived from diphenylmethane diisocyanate to 100 pts.wt. of a polyamido-imide resin whose molecular weight ranges from 0.1 to 1.0 in reduced specific-viscosity is spread and baked on a conductor. Namely, the application of less than 0.1 in the molecular weight of the polyamido-imide resin causes the insufficient flexibility of an insulated wire, while the application of not less than 0.1 in the molecular weight thereof causes the generation of many foams in the coating for the insulated wire under manufacture and therefore causes poor productivity to the wire. Also the application of less than 75 pts.wt. of the polyisocyanate compound makes the insulated wire not solderable, while the application of not less than 400 pts.wt. thereof brings the wire little improvement in its heat-resistance and therefore brings the degree of flexibility as we the insulating coating of the wire to a drop. Such an insulated wire as it uses the polyamido-imide resin whose molecular weight is specified may be excellent both in its external appearance and in its characteristics.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は半田付性に優れかつ耐熱性の良好な絶縁電線に
関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an insulated wire with excellent solderability and good heat resistance.

(従来の技術とその問題点) ポリウレタン絶縁電線は絶縁皮膜をはくすする事なく、
そのまま半田付けが出来るため、電子機器用巻線として
広く使用されている。
(Conventional technology and its problems) Polyurethane insulated wire can be used without removing the insulation film.
Since it can be soldered as is, it is widely used as winding wire for electronic devices.

最近、機器の小型化高性能化が進み、機器の使用雰囲気
温度が上昇し、使用部品の耐熱性向上が要求されはじめ
ている。
Recently, equipment has become smaller and more sophisticated, the ambient temperature in which the equipment is used has increased, and there has been a demand for improved heat resistance of the parts used.

従って従来のポリウレタン絶縁電線では耐熱性の要求を
満足出来なくなる用途も現われ、一部ポリエステル絶縁
電線やエステルイミド絶縁電線が使用されはじめている
Therefore, there are some applications in which conventional polyurethane insulated wires cannot satisfy the heat resistance requirements, and polyester insulated wires and esterimide insulated wires have begun to be used in some cases.

上記のポリエステル、エステルイミド絶縁電線を使用す
ると耐熱性は満足するものの、半田付けが出来ないとい
う問題点があり、ユーザーにおいては耐熱性を優先する
か、端末処理の容易さを優先するか選択に悩んでおり、
耐熱性、半田付性の両方を合せもつ絶縁電線が強く要求
されている。
Although heat resistance is satisfactory when using polyester or esterimide insulated wires mentioned above, there is a problem that soldering is not possible, and the user has to choose whether to prioritize heat resistance or ease of terminal processing. I'm worried,
There is a strong demand for insulated wires that have both heat resistance and solderability.

本発明者は、上記問題点について鋭意検討した結果、ポ
リアミドイミド樹脂に特定の安定化ポリイソシアネート
を適量配合した絶縁塗料を導体上に塗布・焼付する事に
よりポリアミドイミド樹脂の優れた耐熱性を保持しなが
ら、半田付の可能な絶縁電線を得る事に成功した。
As a result of intensive study on the above-mentioned problems, the present inventor maintained the excellent heat resistance of polyamide-imide resin by applying and baking an insulating paint containing polyamide-imide resin and an appropriate amount of a specific stabilized polyisocyanate onto the conductor. However, we succeeded in obtaining an insulated wire that can be soldered.

(特願昭63−251558) 本発明者は上記の技術についてさらに詳細に検討した結
果所定の分子量、構造をもつポリアミドイミドを使用す
ると特に効果のある事がわかり、本発明に到達した。
(Japanese Patent Application No. 63-251558) As a result of further detailed study of the above-mentioned technique, the present inventor found that the use of polyamideimide having a predetermined molecular weight and structure is particularly effective, and thus arrived at the present invention.

(発明の構成) 本発明は分子量が還元比粘度で0.1〜1.0であるポ
リアミドイミド樹脂100重量部に対しジフェニルメタ
ンジイソシアネートより得られた安定化ポリイソシアネ
ート化合物を75重量部〜400重量部加えた絶縁塗料
を導体上に塗布・焼付した事を特徴とする絶縁電線であ
る。
(Structure of the Invention) The present invention uses 75 parts by weight to 400 parts by weight of a stabilized polyisocyanate compound obtained from diphenylmethane diisocyanate to 100 parts by weight of a polyamideimide resin having a molecular weight of 0.1 to 1.0 in reduced specific viscosity. This insulated wire is characterized by having an added insulating paint applied and baked onto the conductor.

本発明にふ・いて、ポリアミドイミド樹脂とは分子中に
アミド結合とイミド結合をもつもので具体的な製法の例
としては次の二つがある。
According to the present invention, polyamide-imide resin has an amide bond and an imide bond in its molecule, and there are two specific examples of manufacturing methods as follows.

一つの方法は少なくとも一種のトリカルボン酸無水物の
酸クロライドと少なくとも一種のジアミンとを反応させ
るものである。又、上記トリカルボン酸無水物の酸クロ
ライドの一部を少くとも一種のジカルボン酸ジクロライ
ド或は少くとも、一種のテトラカルボン酸二無水物、或
は少くとも一種のジカルボン酸ジクロライドと少くとも
一種のテトラカルボン酸二無水物でおきかえてもよい。
One method involves reacting at least one acid chloride of tricarboxylic acid anhydride with at least one diamine. Further, a part of the acid chloride of the tricarboxylic anhydride may be replaced with at least one dicarboxylic dichloride, at least one tetracarboxylic dianhydride, or at least one dicarboxylic dichloride and at least one tetracarboxylic dianhydride. It may be replaced with carboxylic dianhydride.

又、上記ジアミンの一部を少くとも一種のトリアミン、
或いは少なくとも一種のテトラミン、或いは少なくとも
一種のトリアミンと少なくとも一種のテトラミンでおき
かえてもよい。
Further, a part of the above diamine may be replaced with at least one kind of triamine,
Alternatively, at least one type of tetramine may be replaced with at least one triamine and at least one type of tetramine.

トリカルボン酸無水物の酸クロライドの例としては、ト
リメリット酸無水物の4−酸クロライド等がある。
Examples of the acid chloride of tricarboxylic anhydride include 4-acid chloride of trimellitic anhydride.

ジカルボン酸ジクロライドの例としては、テレフタル酸
ジクロライド、イソフタル酸ジクロライド、アジピン酸
ジクロライド等がある。
Examples of dicarboxylic acid dichloride include terephthalic acid dichloride, isophthalic acid dichloride, adipic acid dichloride, and the like.

ジアミンの例としては、4.4’−ジアミノジフェニル
メタン、4.4’−ジアミノジフェニルエーテルm−フ
ェニレンジアミン等がある。トリアミンの例トシては、
8.4.4’ −)リアミノジフェニルエーテル等があ
る。テトラミンの例としては、3.3′。
Examples of diamines include 4,4'-diaminodiphenylmethane, 4,4'-diaminodiphenyl ether m-phenylenediamine, and the like. An example of triamine is
8.4.4'-)riaminodiphenyl ether and the like. An example of tetramine is 3.3'.

4.4′ −テトラアミノジフェニルエーテル等がある
4.4'-tetraaminodiphenyl ether and the like.

代表的な製法のもう一つの例としては、少なくとも一種
のトリカルボン酸無水物と少なくとも一種のジイソシア
ネートとを反応させるものがある。
Another example of a typical manufacturing method involves reacting at least one tricarboxylic acid anhydride with at least one diisocyanate.

又、上記トリカルボン酸無水物の一部を少くとも一種の
ジカルボン酸、或は少くとも一種のテトラカルボン酸二
無水物、或は少くとも一種のジカルボン酸と少くとも一
種のテトラカルボン酸二無水物でおきかえてもよい。
Further, a part of the above tricarboxylic anhydride may be at least one dicarboxylic acid, or at least one tetracarboxylic dianhydride, or at least one dicarboxylic acid and at least one tetracarboxylic dianhydride. You can replace it with

又、上記ジイソシアネートの一部を少くとも一種の3価
又はそれ以上のポリイソシアネートでおきかえてもよい
Further, a part of the above diisocyanate may be replaced with at least one type of trivalent or higher polyisocyanate.

トリカルボン酸無水物の例としては、トリメリット酸無
水物等がある。
Examples of tricarboxylic anhydrides include trimellitic anhydride.

ジカルボン酸の例としては、イソフタル酸、テレフタル
酸、アジピン酸等がある。
Examples of dicarboxylic acids include isophthalic acid, terephthalic acid, adipic acid, and the like.

テトラカルボン酸二無水物の例としては、ピロメリット
酸二無水物、ベンゾフェノンテトラカルボン酸二無水物
等がある。ジイソシアネートの例トシては、ジフェニル
メタン−4,4′−ジイソシアネート、ジフェニルエー
テル−4,ず−ジイソシアネート、トリレンジイソシア
ネート、キシリレンジイソシアネート、ヘキサメチレン
ジイソシアネート等がある。
Examples of tetracarboxylic dianhydride include pyromellitic dianhydride, benzophenone tetracarboxylic dianhydride, and the like. Examples of diisocyanates include diphenylmethane-4,4'-diisocyanate, diphenyl ether-4,z-diisocyanate, tolylene diisocyanate, xylylene diisocyanate, hexamethylene diisocyanate, and the like.

ポリイソシアネートの例としては、ポリメチレンポリフ
ェニレンポリイソシアネート等がある。
Examples of polyisocyanates include polymethylene polyphenylene polyisocyanate.

中でも芳香族トリカルボン酸無水物又はその誘導体と芳
香族ジイソシアネートの反応より得られるポリアミドイ
ミド樹脂を用いるとポリアミドイミド樹脂の特徴である
耐熱性がより発揮出来好ましい0 本発明においては、分子量が還元比粘度で0.1〜1.
0であるポリアミドイミド樹脂を使用する必要がある。
Among these, it is preferable to use a polyamide-imide resin obtained by reacting an aromatic tricarboxylic acid anhydride or its derivative with an aromatic diisocyanate because it can better exhibit the heat resistance characteristic of polyamide-imide resins. In the present invention, the molecular weight is determined by the reduced specific viscosity 0.1 to 1.
It is necessary to use a polyamideimide resin having a

分子量が還元比粘度で0.1以下であると得られる絶縁
電線の可どう性が乏しく、逆に1.0以上であると絶縁
電線の作成時皮膜に多数の発泡を生じ生産性が悪い。又
、還元比粘度が0.2〜0.5であるポリアミドイミド
樹脂を使用すると得られた絶縁電線の特性が良好で絶縁
電線製造時の作業性もよく、好ましい。
If the molecular weight is less than 0.1 in terms of reduced specific viscosity, the obtained insulated wire will have poor flexibility, and if it is more than 1.0, a large number of bubbles will occur in the film during the production of the insulated wire, resulting in poor productivity. Further, it is preferable to use a polyamideimide resin having a reduced specific viscosity of 0.2 to 0.5 because the properties of the resulting insulated wire are good and the workability during production of the insulated wire is also good.

特に還元比粘度が0,3のものが、上記特性、作業性の
最もよい点である。
In particular, those having a reduced specific viscosity of 0.3 have the best properties and workability.

本発明に示した還元比粘度は、溶剤にDMAC又はNM
2 Pを用いポリアミドイミド樹脂の濃度を溶剤100
m1に対し0.5gとした時の温度30°Cでの測定値
で示した。
The reduced specific viscosity shown in the present invention is based on DMAC or NM in the solvent.
2 Using P, the concentration of polyamideimide resin was adjusted to 100% as a solvent.
It is shown as a measured value at a temperature of 30°C when the weight is 0.5g per m1.

ジフェニルメタンジイソシアネートより得られた安定化
ポリイソシアネートとはジフェニルメタンジイソシアネ
ート単独、又は、ジフェニルメタンジイソシアネートと
ポリオール、ポリアミン、ポリカルボン酸等と反応させ
る事により得られたポリイソシアネートのイソシアネー
ト基をフェノール類、アルコール類、カブロラククム類
等の公知のブロック剤でブロックした化合物であればい
かなるものでも使用出来る。
Stabilized polyisocyanate obtained from diphenylmethane diisocyanate is diphenylmethane diisocyanate alone, or polyisocyanate obtained by reacting diphenylmethane diisocyanate with polyols, polyamines, polycarboxylic acids, etc. The isocyanate groups are combined with phenols, alcohols, cabrolaccum, etc. Any compound blocked with a known blocking agent such as the following can be used.

具体的な例としては、ジフェニルメタンジイソシアネー
トとポリオールより得られたポリイソシアネートをフェ
ノール類でブロックした日本ポリウレタン社製コロネー
ト2508 、ジフェニルメタンジイソシアネートをフ
ェノール類でブロックした日本ポリウレタン社製ミリオ
ネートMS −50゜等がある。
Specific examples include Coronate 2508 manufactured by Nippon Polyurethane Co., Ltd., which is a polyisocyanate obtained from diphenylmethane diisocyanate and a polyol blocked with a phenol, and Millionate MS-50°, manufactured by Nippon Polyurethane Co., Ltd., which is a polyisocyanate obtained from diphenylmethane diisocyanate and a polyol blocked with a phenol. .

本発明では、ジフェニルメタンジイソシアネートより得
られる安定化ポリイソシアネート以外では効果を発揮し
ない。
The present invention is not effective with stabilized polyisocyanates other than those obtained from diphenylmethane diisocyanate.

例えば、ポリオールとトリレンジイソシアネートより得
られた安定化ポリイソシアネートを用いると半田付性は
良好なものの、絶縁皮膜の可とう性が乏しいものしか得
られず、トリレンジイソシアネートの三量体より得られ
たイソシアヌル環を含む安定化ポリイソシアネートを用
いると絶縁皮膜の可とう性は良好なものの半田付が出来
ない。
For example, when using a stabilized polyisocyanate obtained from a polyol and tolylene diisocyanate, the solderability is good, but the flexibility of the insulating film is poor; When a stabilized polyisocyanate containing an isocyanuric ring is used, the insulating film has good flexibility but cannot be soldered.

本発明においては、ポリアミドイミド樹脂100重量部
に対しジフェニルメタンジイソシアネートより得られた
安定化ポリイソシアネート化合物を75重量部〜400
重量部加える必要がある。75重量部以下であると得ら
れた絶縁電線が半田付出来なくなり、400重量部以上
であると得られた絶縁電線の耐熱性向上が小さく、絶縁
皮膜の可とう性も低下する。
In the present invention, 75 to 400 parts by weight of a stabilized polyisocyanate compound obtained from diphenylmethane diisocyanate is added to 100 parts by weight of the polyamide-imide resin.
It is necessary to add parts by weight. If it is less than 75 parts by weight, the obtained insulated wire will not be solderable, and if it is more than 400 parts by weight, the heat resistance of the obtained insulated wire will be little improved and the flexibility of the insulating film will also be reduced.

本発明の絶縁塗料に使用される溶剤としては、ポリアミ
ドイミド樹脂の溶剤として使用される、NM 2 P 
、 DMAC、DMF等とソルベントナフサ、トルエン
、キシレン等の稀釈剤の組み合せが好ましいが、通常の
焼付塗料において用いられるフェノール、クレゾール類
、セロソルブ、フェニルセロソルブ、メチルセロソルブ
、グリ1コソルブ、メチルセロソルブ、フェニルセロソ
ルブ、酢酸セロソルブ等のグリコールエーテル類、シク
ロヘキサノン、メチルエチルエトン、酢酸エチル、テト
ラヒドロフラン、ニトロベンゼン、ジオキサン、フルフ
ラール、スルホラン、DMSol ピリジン、アニリン
、炭酸ジエチル、エタノール、メタノール、ブタノール
、シクロヘキサノール、等を使用するか一部加えてもよ
い。
The solvent used in the insulating paint of the present invention is NM 2 P, which is used as a solvent for polyamideimide resin.
A combination of , DMAC, DMF, etc. and a diluent such as solvent naphtha, toluene, xylene, etc. is preferred, but phenol, cresols, cellosolve, phenyl cellosolve, methyl cellosolve, glycosolve, methyl cellosolve, phenyl, which are used in ordinary baking paints, are preferred. Glycol ethers such as cellosolve, cellosolve acetate, cyclohexanone, methylethyletone, ethyl acetate, tetrahydrofuran, nitrobenzene, dioxane, furfural, sulfolane, DMSol, pyridine, aniline, diethyl carbonate, ethanol, methanol, butanol, cyclohexanol, etc. are used. You may also add some.

本発明の絶縁塗料には必要に応じて、ナフテン酸や、オ
クテン酸の金属塩やアルキルアミン類、イミダゾール類
等のアミン類を硬化触媒として使用する事も出来る。
If necessary, amines such as naphthenic acid, metal salts of octenoic acid, alkylamines, and imidazoles can be used as curing catalysts in the insulating coating of the present invention.

絶縁電線の製造時には、上記触媒を適当量加える方が製
造しやすく、耐熱性のよりよいものが得られるので好ま
しい。
When manufacturing insulated wires, it is preferable to add an appropriate amount of the above-mentioned catalyst because manufacturing is easier and products with better heat resistance can be obtained.

本発明の絶縁塗料には、本発明の特徴を損わない程度ニ
ポリビニルホルマール、ポリアミド、ポリエステル、ポ
リウレタン、ポリエーテル、ポリスルホン、ポリエーテ
ルスルホン、ポリエーテルイミド等の熱可塑性樹脂、メ
ラミン樹脂、フェノール樹脂、ポリエステル、ポリウレ
タン、ポリエステルイミド、ポリアミドイミド、ポリエ
ステルアミドイミド、ポリイミド、ヒダントイン等の熱
硬化性樹脂、フィラー、顔料、染料、界面活性剤、潤滑
剤、酸化防止剤、等を加える事も可能である。
The insulating paint of the present invention includes thermoplastic resins such as polyvinyl formal, polyamide, polyester, polyurethane, polyether, polysulfone, polyether sulfone, and polyetherimide, melamine resin, and phenol resin, to an extent that does not impair the characteristics of the present invention. It is also possible to add thermosetting resins such as polyester, polyurethane, polyesterimide, polyamideimide, polyesteramideimide, polyimide, hydantoin, fillers, pigments, dyes, surfactants, lubricants, antioxidants, etc. .

以下の実施例において本発明の詳細な説明するが本発明
はこれら実施例に限定されるものではない。
The present invention will be explained in detail in the following examples, but the present invention is not limited to these examples.

以下の参考例で比較例及び実施例に用いた絶縁塗料を示
す。
The following reference examples show insulating paints used in comparative examples and examples.

(参考例1)(ポリアミドイミド絶縁塗料)トリメリッ
ト酸無水物192.1g(1,0モル)とジフェニール
メタン−4,4′−ジイソシアネート250.3g(1
,0モル)とを、N−メチル−2−とロリドン770g
とソルベントナフサ(丸善石油化学製スワゾール#11
000)380との混合溶剤中に加えて80°Cで3時
間反応後、165°C迄6時間で昇温し、この温度で2
時間反応させポリアミドイミド絶縁塗料を得た。樹脂の
還元比粘度は0.51 であった。
(Reference Example 1) (Polyamide-imide insulation coating) 192.1 g (1.0 mol) of trimellitic anhydride and 250.3 g (1.0 mol) of diphenylmethane-4,4'-diisocyanate
,0 mol) and N-methyl-2- and 770 g of lolidon.
and solvent naphtha (Maruzen Petrochemical Swazol #11
000) 380 and reacted at 80°C for 3 hours, the temperature was raised to 165°C in 6 hours, and at this temperature 2
A polyamide-imide insulating paint was obtained by a time reaction. The reduced specific viscosity of the resin was 0.51.

(参考例2〜6) 参考例1と同様の原料を用い、反応温度、反応時間を変
える事により、樹脂の還元比粘度が0.07(参考例2
)、0.13’(参考例3)、0.31(参考例4)、
0.85(参考例5)、1.15(参考例6)のポリア
ミドイミドを得た。
(Reference Examples 2 to 6) By using the same raw materials as in Reference Example 1 and changing the reaction temperature and reaction time, the reduced specific viscosity of the resin was 0.07 (Reference Example 2
), 0.13' (Reference Example 3), 0.31 (Reference Example 4),
Polyamideimide having a weight of 0.85 (Reference Example 5) and 1.15 (Reference Example 6) was obtained.

(実施例1) 参考例1で作製したポリアミドイミド絶縁塗料の樹脂分
100重量部に対してポリオールとジフェニルメタンジ
イソシアネートより得られた安定化ポリイソシアネート
である日本ポリウレタン社製コロネート2503(以下
コロネー) 2503と略す)を200重量部触媒とし
て、ジブチルスズラウレートを1重量部加え、溶解混合
した絶縁塗料を0.3珊φの銅導体上に皮膜厚0.02
0mmとなるように塗布・焼付した。得られた絶縁電線
の特性を評価した結果を表1に示した。
(Example 1) Coronate 2503 (hereinafter referred to as Coronet) 2503 manufactured by Nippon Polyurethane Co., Ltd., which is a stabilized polyisocyanate obtained from a polyol and diphenylmethane diisocyanate, was used for 100 parts by weight of the resin content of the polyamide-imide insulation paint prepared in Reference Example 1. 200 parts by weight of (abbreviated) as a catalyst, 1 part by weight of dibutyltin laurate, dissolved and mixed, and the insulating paint was coated on a 0.3mm diameter copper conductor with a film thickness of 0.02mm.
It was coated and baked to a thickness of 0 mm. Table 1 shows the results of evaluating the characteristics of the obtained insulated wire.

(比較例1) ポリアミドイミド絶縁塗料を参考例2で作製したものと
した以外は実施例1と同様にして、絶縁電線を作製し、
特性を評価した。結果を表1に示した。
(Comparative Example 1) An insulated wire was produced in the same manner as in Example 1 except that the polyamide-imide insulating paint was used as that produced in Reference Example 2,
Characteristics were evaluated. The results are shown in Table 1.

(実施例2〜4) ポリアミドイミド絶縁塗料を参考例3(実施例2)、参
考例4(実施例3)、参考例5(実施例4)でそれぞれ
作成したものとした以外は実施例1と同様にして、絶縁
電線を作製し特性を評価した。結果を表1に示した。
(Examples 2 to 4) Example 1 except that the polyamide-imide insulating paint was prepared in Reference Example 3 (Example 2), Reference Example 4 (Example 3), and Reference Example 5 (Example 4), respectively. Insulated wires were prepared and their characteristics were evaluated in the same manner as above. The results are shown in Table 1.

(比較例2) ポリアミドイミド絶縁塗料を参考例6で作製したものと
した以外は実施例1と同様にして、絶縁電線の作製を試
みたところ発泡が多数発生し、断線し絶縁電線が得られ
なかった。
(Comparative Example 2) When an attempt was made to produce an insulated wire in the same manner as in Example 1, except that the polyamide-imide insulating paint was used as the one produced in Reference Example 6, many bubbles occurred, the wire broke, and an insulated wire was not obtained. There wasn't.

(発明の効果) 以上説明したように本発明の分子量を規定したポリアミ
ドイミド樹脂を使用した絶縁電線は、外観、特性とも良
好であり、その工業的価値は大きい。
(Effects of the Invention) As explained above, the insulated wire using the polyamide-imide resin of the present invention with a defined molecular weight has good appearance and properties, and has great industrial value.

Claims (6)

【特許請求の範囲】[Claims] (1)分子量が還元比粘度で0.1〜1.0であるポリ
アミドイミド樹脂100重量部に対しジフェニルメタン
ジイソシアネートより得られた安定化ポリイソシアネー
ト化合物を75重量部〜400重量部加えた絶縁塗料を
導体上に塗布・焼付した事を特徴とする絶縁電線。
(1) An insulating paint prepared by adding 75 parts by weight to 400 parts by weight of a stabilized polyisocyanate compound obtained from diphenylmethane diisocyanate to 100 parts by weight of a polyamideimide resin having a molecular weight of 0.1 to 1.0 in reduced specific viscosity. An insulated wire characterized by coating and baking on the conductor.
(2)ポリアミドイミド樹脂の分子量が還元比粘度で0
.2〜0.5である請求項1記載の絶縁電線。
(2) The molecular weight of polyamide-imide resin is 0 in terms of reduced specific viscosity.
.. The insulated wire according to claim 1, wherein the insulated wire has a molecular weight of 2 to 0.5.
(3)ポリアミドイミド樹脂の分子量が還元比粘度で0
.3である請求項1記載の絶縁電線。
(3) The molecular weight of polyamide-imide resin is 0 in terms of reduced specific viscosity.
.. 3. The insulated wire according to claim 1.
(4)ポリアミドイミド樹脂が芳香族トリカルボン酸無
水物又はその誘導体と芳香族ジイソシアネートの反応よ
り得られる化合物である請求項1記載の絶縁電線。
(4) The insulated wire according to claim 1, wherein the polyamide-imide resin is a compound obtained by reacting an aromatic tricarboxylic acid anhydride or a derivative thereof with an aromatic diisocyanate.
(5)ジフェニルメタンジイソシアネートより得られた
安定化ポリイソシアネート化合物がジフェニルメタンジ
イソシアネートのイソシアネート基をブロック剤で安定
化したポリイソシアネート化合物である請求項1記載の
絶縁電線。
(5) The insulated wire according to claim 1, wherein the stabilized polyisocyanate compound obtained from diphenylmethane diisocyanate is a polyisocyanate compound obtained by stabilizing the isocyanate groups of diphenylmethane diisocyanate with a blocking agent.
(6)ジフェニルメタンジイソシアネートより得られた
安定化ポリイソシアネート化合物がポリオールとジフェ
ニルメタンジイソシアネートより得られたポリイソシア
ネートをブロック剤で安定化した安定化ポリイソシアネ
ート化合物である請求項1記載の絶縁電線。
(6) The insulated wire according to claim 1, wherein the stabilized polyisocyanate compound obtained from diphenylmethane diisocyanate is a stabilized polyisocyanate compound obtained by stabilizing the polyisocyanate obtained from a polyol and diphenylmethane diisocyanate with a blocking agent.
JP1125396A 1985-05-17 1989-05-17 Insulated wire Expired - Lifetime JP2683416B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP1125396A JP2683416B2 (en) 1989-05-17 1989-05-17 Insulated wire
EP89118324A EP0365877B1 (en) 1988-10-04 1989-10-03 Polyamideimide insulated wire
DE68920542T DE68920542T2 (en) 1988-10-04 1989-10-03 Wire insulated with polyamideimide.
KR1019890014235A KR920009847B1 (en) 1985-05-17 1989-10-04 Polyamideimide insulated wire
US07/895,455 US5219657A (en) 1988-10-04 1992-06-08 Polyamideimide insulated wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1125396A JP2683416B2 (en) 1989-05-17 1989-05-17 Insulated wire

Publications (2)

Publication Number Publication Date
JPH02304808A true JPH02304808A (en) 1990-12-18
JP2683416B2 JP2683416B2 (en) 1997-11-26

Family

ID=14909103

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1125396A Expired - Lifetime JP2683416B2 (en) 1985-05-17 1989-05-17 Insulated wire

Country Status (1)

Country Link
JP (1) JP2683416B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05339523A (en) * 1992-06-05 1993-12-21 Hitachi Cable Ltd Insulating varnish and insulated wire

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5023056A (en) * 1973-07-04 1975-03-12
JPS51150543A (en) * 1975-06-20 1976-12-24 Tokyo Tokushu Densen Toryo Kk Polyurethane electrical insulating paint
JPS5624445A (en) * 1979-08-04 1981-03-09 Hitachi Chem Co Ltd Polyamide-imide resin soluble in cresol-based solvent
JPS5968108A (en) * 1982-10-08 1984-04-18 日立化成工業株式会社 Insulated wire
JPS60124668A (en) * 1983-12-09 1985-07-03 Hitachi Cable Ltd Insulated wire

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5023056A (en) * 1973-07-04 1975-03-12
JPS51150543A (en) * 1975-06-20 1976-12-24 Tokyo Tokushu Densen Toryo Kk Polyurethane electrical insulating paint
JPS5624445A (en) * 1979-08-04 1981-03-09 Hitachi Chem Co Ltd Polyamide-imide resin soluble in cresol-based solvent
JPS5968108A (en) * 1982-10-08 1984-04-18 日立化成工業株式会社 Insulated wire
JPS60124668A (en) * 1983-12-09 1985-07-03 Hitachi Cable Ltd Insulated wire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05339523A (en) * 1992-06-05 1993-12-21 Hitachi Cable Ltd Insulating varnish and insulated wire

Also Published As

Publication number Publication date
JP2683416B2 (en) 1997-11-26

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