JPH0794028A - Polypropylene insulated wire - Google Patents
Polypropylene insulated wireInfo
- Publication number
- JPH0794028A JPH0794028A JP5238318A JP23831893A JPH0794028A JP H0794028 A JPH0794028 A JP H0794028A JP 5238318 A JP5238318 A JP 5238318A JP 23831893 A JP23831893 A JP 23831893A JP H0794028 A JPH0794028 A JP H0794028A
- Authority
- JP
- Japan
- Prior art keywords
- polypropylene
- insulated wire
- antioxidant
- resistance
- metal hydroxide
- 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.)
- Pending
Links
- -1 Polypropylene Polymers 0.000 title claims abstract description 23
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 23
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 23
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 13
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 13
- 229910000000 metal hydroxide Inorganic materials 0.000 claims abstract description 12
- 150000004692 metal hydroxides Chemical class 0.000 claims abstract description 12
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 10
- 239000004020 conductor Substances 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 9
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical group [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 5
- 239000000347 magnesium hydroxide Substances 0.000 claims description 5
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 9
- 239000010949 copper Substances 0.000 description 9
- 230000006866 deterioration Effects 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 150000003852 triazoles Chemical class 0.000 description 2
- KJUGUADJHNHALS-UHFFFAOYSA-N 1H-tetrazole Substances C=1N=NNN=1 KJUGUADJHNHALS-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- ZNRLMGFXSPUZNR-UHFFFAOYSA-N 2,2,4-trimethyl-1h-quinoline Chemical compound C1=CC=C2C(C)=CC(C)(C)NC2=C1 ZNRLMGFXSPUZNR-UHFFFAOYSA-N 0.000 description 1
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000002429 hydrazines Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 150000003536 tetrazoles Chemical class 0.000 description 1
- WGKLOLBTFWFKOD-UHFFFAOYSA-N tris(2-nonylphenyl) phosphite Chemical compound CCCCCCCCCC1=CC=CC=C1OP(OC=1C(=CC=CC=1)CCCCCCCCC)OC1=CC=CC=C1CCCCCCCCC WGKLOLBTFWFKOD-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Insulated Conductors (AREA)
- Organic Insulating Materials (AREA)
Abstract
(57)【要約】
【目的】 重金属との接触に対し著しい抵抗性を有する
ポリプロピレン絶縁電線を提供することを可能とする。
【構成】 重金属製の導体上に、ポリプロピレンに酸化
防止剤および金属水酸化物を添加してなる組成物を被覆
するポリプロピレン絶縁電線。(57) [Abstract] [Purpose] It is possible to provide a polypropylene insulated wire having remarkable resistance to contact with heavy metals. [Composition] A polypropylene insulated electric wire comprising a heavy metal conductor coated with a composition prepared by adding an antioxidant and a metal hydroxide to polypropylene.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、重金属との接触に対し
て抵抗性を有するポリプロピレン絶縁電線に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polypropylene insulated wire having resistance to contact with heavy metals.
【０００２】[0002]
【従来の技術】ポリプロピレンは優れた物理的および電
気的特性を有しているため、一部の電線・ケーブルの被
覆剤として使用されている。実用に際して、ポリプロピ
レンは混練・押出加工時および使用時に熱や酸素により
劣化するため、これを抑制するため酸化防止剤や安定剤
等を添加することが試みられている。BACKGROUND OF THE INVENTION Polypropylene is used as a coating material for some electric wires and cables because of its excellent physical and electrical properties. In practical use, polypropylene deteriorates due to heat and oxygen during kneading / extrusion processing and during use. Therefore, it has been attempted to add an antioxidant, a stabilizer or the like in order to suppress the deterioration.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、ポリプ
ロピレンと重金属、特に銅との接触が避けられない電線
においては、銅により熱酸化劣化が著しく促進され、前
述の酸化防止剤や安定剤のみではその抑制効果は非常に
小さく物性の大幅な低下を招くことがある。However, in electric wires in which contact between polypropylene and heavy metals, especially copper, is unavoidable, thermal oxidative deterioration is significantly promoted by copper, and the above-mentioned antioxidants and stabilizers alone suppress the deterioration. The effect is very small and the physical properties may be significantly reduced.
【０００４】また、銅による劣化を抑制する添加剤とし
てはトリアゾール類、テトラゾール類、置換ヒドラジン
類、マロン類アミド等が挙げられるが、その抑制効果は
十分といえるものではない。[0004] Examples of additives that suppress the deterioration due to copper include triazoles, tetrazoles, substituted hydrazines and malon amides, but their inhibitory effect is not sufficient.
【０００５】本発明の目的は、前記した従来技術の欠点
を解消し、重金属との接触に対し著しい抵抗性を有する
ポリプロピレン絶縁電線を提供することにある。It is an object of the present invention to solve the above-mentioned drawbacks of the prior art and to provide a polypropylene insulated wire having a remarkable resistance to contact with heavy metals.
【０００６】[0006]
【課題を解決するための手段】前記目的を達成するため
に、本発明のポリプロピレン絶縁電線は、重金属製の導
体上に、ポリプロピレンに酸化防止剤および金属水酸化
物を添加してなる組成物を被覆したものである。また、
前記酸化防止剤および金属水酸化物の添加量は、ポリプ
ロピレン 100重量部に対して 0.5重量部以上および 5〜
50重量部であることが好ましい。さらに金属水酸化物は
水酸化マグネシウムであることが好ましい。In order to achieve the above object, the polypropylene insulated wire of the present invention comprises a composition made by adding an antioxidant and a metal hydroxide to polypropylene on a conductor made of heavy metal. It is coated. Also,
The addition amount of the antioxidant and metal hydroxide is 0.5 parts by weight or more and 5 to 100 parts by weight of polypropylene.
It is preferably 50 parts by weight. Further, the metal hydroxide is preferably magnesium hydroxide.
【０００７】[0007]
【作用】ポリプロピレンに酸化防止剤および金属水酸化
物を添加することにより、重金属との接触に対して著し
い抵抗性を有し、耐熱性および耐摩耗性に優れた組成物
が得られる。すなわち、ポリプロピレンに酸化防止剤を
添加するだけでは熱酸化劣化が著しく促進され、これら
の系に更に金属水酸化物を添加することにより、重金
属、特に銅との接触による熱酸化劣化の促進を大幅に抑
制し、特性低下の少ない組成物が得られることを見出し
た。この作用機構については実証はしていないが、トリ
アゾール類等と同様、銅イオンと錯体を形成し安定化す
るものと推定される。By adding an antioxidant and a metal hydroxide to polypropylene, a composition having remarkable resistance to contact with heavy metals and having excellent heat resistance and abrasion resistance can be obtained. That is, the thermal oxidative deterioration is remarkably promoted only by adding an antioxidant to polypropylene, and the addition of a metal hydroxide to these systems significantly accelerates the thermal oxidative deterioration due to contact with heavy metals, especially copper. It has been found that a composition that suppresses the above and suppresses deterioration of properties can be obtained. Although this mechanism of action has not been demonstrated, it is presumed that it stabilizes by forming a complex with copper ions, like triazoles and the like.
【０００８】本発明は重金属製の導体にポリプロピレン
を被覆する電線に有効で、特に銅導体や錫メッキ銅導体
などの銅系導体の電線に有効である。The present invention is effective for an electric wire in which a heavy metal conductor is coated with polypropylene, and is particularly effective for an electric wire made of a copper-based conductor such as a copper conductor or a tin-plated copper conductor.
【０００９】酸化防止剤としては、アミン系，フェノー
ル系，硫黄系，リン系があり、具体的には２，２，４−
トリメチル−１，２−ジヒドロキノリンの重合物、テト
ラキス−［メチレン−３−（３′，５′−ジ−第三−ブ
チル−４′−ヒドロキシフェニル）プロピオネート］メ
タン、４，４′−チオビス−（６−第三−ブチル−３−
メチルフェノール）、トリス（ノニル・フェニル）ホス
ファイト等が挙げられ、これらを単独あるいは２種類以
上併用してもよい。Antioxidants include amine-based, phenol-based, sulfur-based and phosphorus-based antioxidants, specifically 2,2,4-
Polymer of trimethyl-1,2-dihydroquinoline, tetrakis- [methylene-3- (3 ', 5'-di-tert-butyl-4'-hydroxyphenyl) propionate] methane, 4,4'-thiobis- (6-tert-butyl-3-
Examples thereof include methylphenol) and tris (nonylphenyl) phosphite, and these may be used alone or in combination of two or more kinds.
【００１０】酸化防止剤は、耐熱性を改善するためのも
ので、その添加量はポリプロピレン100重量部に対して
0.5重量部以上であることが好ましく、限定値未満では
目的とする耐熱性を付与できない。The antioxidant is for improving heat resistance, and its addition amount is 100 parts by weight of polypropylene.
It is preferably 0.5 part by weight or more, and if it is less than the limited value, the desired heat resistance cannot be imparted.
【００１１】金属水酸化物としては、種々のものがある
が、加工安定性および抑制効果に優れる水酸化マグネシ
ウムが好ましい。金属水酸化物は、分散性や耐水性を考
慮し、脂肪酸，シランカップリング剤，チタネートカッ
プリング剤等の表面処理剤で表面処理したものを用いる
ことが望ましい。There are various metal hydroxides, but magnesium hydroxide is preferable because it is excellent in processing stability and suppressing effect. Considering dispersibility and water resistance, it is desirable to use a metal hydroxide that has been surface-treated with a surface treatment agent such as a fatty acid, a silane coupling agent, or a titanate coupling agent.
【００１２】金属水酸化物は、重金属、特に銅との接触
による熱酸化劣化の促進を抑制するためのもので、その
添加量は、ポリプロピレン 100重量部に対して 5〜50重
量部であることが好ましく、限定値未満では目的とする
重金属への効果が小さく、限定値を越えると強じん性が
大幅に損なわれる。The metal hydroxide is used to suppress the acceleration of thermal oxidative deterioration due to contact with heavy metals, especially copper, and the addition amount thereof is 5 to 50 parts by weight with respect to 100 parts by weight of polypropylene. If it is less than the limit value, the effect on the intended heavy metal is small, and if it exceeds the limit value, the toughness is significantly impaired.
【００１３】尚、本発明では前記成分の他に、架橋剤，
安定剤，難燃剤，難燃助剤，滑剤，着色剤等を適宜添加
してもよく、これらからなる組成物を熱あるいは電子線
照射等により架橋してもよい。In the present invention, in addition to the above components, a crosslinking agent,
Stabilizers, flame retardants, flame retardant aids, lubricants, colorants and the like may be added as appropriate, and compositions composed of these may be crosslinked by heat or electron beam irradiation.
【００１４】[0014]
【実施例】以下、本発明の実施例を説明する。EXAMPLES Examples of the present invention will be described below.
【００１５】先ず、表１の実施例１〜４および比較例１
〜３の各欄に示すような配合成分に従って各種成分を 2
20℃に設定した30ｍｍ２軸混練機で混練して組成物を形
成し、その後、これら組成物を 220℃に設定した40ｍｍ
押出機を用いて芯線外径０．８７φの銅導体上に０．２
０ｍｍの厚さで押出し被覆して、各種絶縁電線を作製し
た。この際、導体はガスバーナで 130℃に予熱した。First, Examples 1 to 4 and Comparative Example 1 in Table 1
According to the compounding ingredients shown in each column of ~ 3
The composition was formed by kneading with a 30 mm twin-screw kneader set at 20 ° C, and then these compositions were set at 220 ° C and 40 mm
0.2 on a copper conductor with a core wire outer diameter of 0.87φ using an extruder.
Various insulated electric wires were produced by extrusion coating with a thickness of 0 mm. At this time, the conductor was preheated to 130 ° C with a gas burner.
【００１６】次に、このようにして作製した電線につい
て以下に示す評価（耐熱寿命および耐摩耗性）を行い、
その結果を表１の下欄に示す。Next, the following evaluation (heat-resistant life and abrasion resistance) was performed on the electric wire thus produced,
The results are shown in the lower column of Table 1.
【００１７】(1)耐熱寿命 日本自動車規格（ＪＡＳＯ）Ｄ６０８−９２を基に電線
を 160℃の流通空気中で加熱し、加熱後常温になるまで
放冷後、12.5φのマンドレルに６ターン巻き付け1000
Ｖ、１分間の耐圧試験を行う。１日単位で評価し、耐圧
試験に不合格となった時間を耐熱寿命とした。(1) Heat-resistant life Based on the Japanese automobile standard (JASO) D608-92, the wire is heated in circulating air at 160 ° C, and after cooling to room temperature, it is wound around a 12.5φ mandrel for 6 turns. 1000
V withstand voltage test for 1 minute. Evaluation was made in units of 1 day, and the time when the pressure resistance test failed was defined as the heat resistant life.
【００１８】(2)耐摩耗性 日本自動車規格（ＪＡＳＯ）Ｄ６０８−８７に準拠し、
510ｇの荷重でブレド往復法による耐摩耗試験を４回行
い、導体露出の最小回数を示した。(2) Abrasion resistance According to Japanese Automotive Standard (JASO) D608-87,
The wear resistance test by the blade reciprocation method was carried out four times with a load of 510 g, and the minimum number of conductor exposures was shown.
【００１９】[0019]
【表１】 [Table 1]
【００２０】表１からも明らかなように、本発明にかか
る実施例１〜４の電線では、いずれも耐熱寿命が長く耐
熱性に優れ、かつ耐摩耗性も良好である。これに対し
て、水酸化マグネシウムを添加していない比較例１およ
び酸化防止剤を添加していない比較例２では、いずれも
わずか１日で巻付後クラックを生じ、耐圧試験に不合格
となる。また、水酸化マグネシウムの添加量が限定値を
越える比較例３は耐摩耗性の低下が著しい。As is clear from Table 1, all of the electric wires of Examples 1 to 4 according to the present invention have a long heat-resistant life, excellent heat resistance, and good wear resistance. On the other hand, in Comparative Example 1 in which magnesium hydroxide is not added and Comparative Example 2 in which no antioxidant is added, cracks occur after winding in only one day, and the pressure resistance test fails. . Further, in Comparative Example 3 in which the added amount of magnesium hydroxide exceeds the limited value, the wear resistance is significantly reduced.
【００２１】[0021]
【発明の効果】以上要するに本発明によれば、重金属と
の接触に対し著しい抵抗性を有し、耐熱性および耐摩耗
性に優れたポリプロピレン絶縁電線が得られるという優
れた効果を奏する。In summary, according to the present invention, it is possible to obtain a polypropylene insulated wire which has a remarkable resistance to contact with a heavy metal and is excellent in heat resistance and abrasion resistance.
Claims (3)
酸化防止剤および金属水酸化物を添加してなる組成物を
被覆したことを特徴とするポリプロピレン絶縁電線。1. A polypropylene insulated wire, characterized in that a conductor made of heavy metal is coated with a composition obtained by adding an antioxidant and a metal hydroxide to polypropylene.
加量が、ポリプロピレン 100重量部に対して 0.5重量部
以上および 5〜50重量部である請求項１記載のポリプロ
ピレン絶縁電線。2. The polypropylene insulated wire according to claim 1, wherein the antioxidant and the metal hydroxide are added in an amount of 0.5 parts by weight or more and 5 to 50 parts by weight with respect to 100 parts by weight of polypropylene.
である請求項１又は２記載のポリプロピレン絶縁電線。3. The polypropylene insulated wire according to claim 1, wherein the metal hydroxide is magnesium hydroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5238318A JPH0794028A (en) | 1993-09-24 | 1993-09-24 | Polypropylene insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5238318A JPH0794028A (en) | 1993-09-24 | 1993-09-24 | Polypropylene insulated wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0794028A true JPH0794028A (en) | 1995-04-07 |
Family
ID=17028432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5238318A Pending JPH0794028A (en) | 1993-09-24 | 1993-09-24 | Polypropylene insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0794028A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998010432A1 (en) * | 1996-09-05 | 1998-03-12 | Scapa Group Plc | Wire coating composition |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01186709A (en) * | 1988-01-19 | 1989-07-26 | Hitachi Cable Ltd | Fire-resistant insulating composition |
| JPH01186708A (en) * | 1988-01-19 | 1989-07-26 | Hitachi Cable Ltd | Fire-resistant insulating composition |
| JPH01186707A (en) * | 1988-01-19 | 1989-07-26 | Hitachi Cable Ltd | Fire-resistant insulating composition |
| JPH03227337A (en) * | 1990-01-31 | 1991-10-08 | Fujikura Ltd | Flame retardant composition and flame retardant cable |
| JPH04189855A (en) * | 1990-11-24 | 1992-07-08 | Fujikura Ltd | Flame-retardant composition |
-
1993
- 1993-09-24 JP JP5238318A patent/JPH0794028A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01186709A (en) * | 1988-01-19 | 1989-07-26 | Hitachi Cable Ltd | Fire-resistant insulating composition |
| JPH01186708A (en) * | 1988-01-19 | 1989-07-26 | Hitachi Cable Ltd | Fire-resistant insulating composition |
| JPH01186707A (en) * | 1988-01-19 | 1989-07-26 | Hitachi Cable Ltd | Fire-resistant insulating composition |
| JPH03227337A (en) * | 1990-01-31 | 1991-10-08 | Fujikura Ltd | Flame retardant composition and flame retardant cable |
| JPH04189855A (en) * | 1990-11-24 | 1992-07-08 | Fujikura Ltd | Flame-retardant composition |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998010432A1 (en) * | 1996-09-05 | 1998-03-12 | Scapa Group Plc | Wire coating composition |
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