JPS6224450B2 - - Google Patents
Info
- Publication number
- JPS6224450B2 JPS6224450B2 JP53018645A JP1864578A JPS6224450B2 JP S6224450 B2 JPS6224450 B2 JP S6224450B2 JP 53018645 A JP53018645 A JP 53018645A JP 1864578 A JP1864578 A JP 1864578A JP S6224450 B2 JPS6224450 B2 JP S6224450B2
- Authority
- JP
- Japan
- Prior art keywords
- parts
- insulated conduit
- mixture
- density polyethylene
- polyethylene
- 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.)
- Expired
Links
- 239000000203 mixture Substances 0.000 claims description 24
- 229920003002 synthetic resin Polymers 0.000 claims description 11
- 239000000057 synthetic resin Substances 0.000 claims description 11
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 claims description 8
- 239000004156 Azodicarbonamide Substances 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 7
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 claims description 7
- 235000019399 azodicarbonamide Nutrition 0.000 claims description 7
- 229920001903 high density polyethylene Polymers 0.000 claims description 7
- 239000004700 high-density polyethylene Substances 0.000 claims description 7
- 229920001684 low density polyethylene Polymers 0.000 claims description 7
- 239000004702 low-density polyethylene Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- -1 polyethylene Polymers 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- 239000004604 Blowing Agent Substances 0.000 claims description 6
- WHHGLZMJPXIBIX-UHFFFAOYSA-N decabromodiphenyl ether Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br WHHGLZMJPXIBIX-UHFFFAOYSA-N 0.000 claims description 5
- 239000003063 flame retardant Substances 0.000 claims description 5
- UBRWPVTUQDJKCC-UHFFFAOYSA-N 1,3-bis(2-tert-butylperoxypropan-2-yl)benzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC(C(C)(C)OOC(C)(C)C)=C1 UBRWPVTUQDJKCC-UHFFFAOYSA-N 0.000 claims description 4
- 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 claims description 4
- 239000012212 insulator Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 2
- 238000005187 foaming Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/06—Ethers; Acetals; Ketals; Ortho-esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/021—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeve, two half sleeves
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Materials Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Thermal Insulation (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Description
【発明の詳細な説明】
本発明は、冷又は液状媒体を導く金属管特に銅
製金属管及びこの金属管を被覆する、発泡合成樹
脂からなる絶縁体からなる断熱した導管に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a metal tube, in particular a copper metal tube, for conducting a cold or liquid medium, and a thermally insulated conduit covering the metal tube made of an insulator made of foamed synthetic resin.
絶縁を目的として、金属管に合成樹脂層を設け
る。絶縁性を高めるため、及び合成樹脂を節約す
るため、近年増々発泡合成樹脂を絶縁材として用
いて来た。しかし耐熱性乃至機械的強度並びに発
泡度は各種各様で任意に選択できるものである。 A synthetic resin layer is provided on the metal tube for insulation purposes. In recent years, foamed synthetic resins have been increasingly used as insulating materials in order to improve insulation and to save synthetic resins. However, the heat resistance, mechanical strength, and degree of foaming can be arbitrarily selected from various values.
この理由から既に合成樹脂を網状化することが
提案されている。 For this reason, it has already been proposed to reticulate synthetic resins.
本発明は、抽出機内で処理でき、発泡度を高く
し、乃至比重を小さくし、従つて合成樹脂量を節
約し、並びに耐熱性を高くする混合物を提供する
ことを課題とする。 The object of the invention is to provide a mixture which can be processed in an extractor and which has a high degree of foaming and a low specific gravity, thus saving on the amount of synthetic resin and having a high heat resistance.
この課題は、合成樹脂として高密度（ρ
0.945）ポリエチレン50乃至70部及び低密度（ρ
0.94）ポリエチレン30乃至50部からなる混合物
を使用し、その際該混合物は発泡剤0.5乃至５部
及び網状化剤0.1〜２部を含有させることにより
解決する。高密度ポリエチレンとして、商品名
“ルポレン5011K”で市販されているポリエチレ
ンを用いる。低密度ポリエチレンとして、商品名
“ルポレン2425MX”で市販されているポリエチ
レンを用いる。高密度ポリエチレンの低密度ポリ
エチレンに対する比率は、絶縁材に左右される仕
様による。大量の高密度ポリエチレンを含む混合
物は比較的硬く、耐熱性が高いが、低密度ポリエ
チレンを多量に用いると、可撓性が良好になると
いう利点がある。特に、管を住宅に用いる場合、
４〜15部の防炎剤を加えた混合物が有利であると
判明した。防炎剤を加えることにより、絶縁外套
部の燃焼性が本質的に除去される。発泡剤とし
て、アゾジカーボンアミドが特に有利である。網
状化剤として１・３−ビス（テルトブチルペルオ
キシイソプロピル）−ベンゾールを用いる。この
発泡剤を前述の網状化剤と共に組合せると、加熱
すると合成樹脂混合物が先ず少なくとも部分的に
網状化し、次いで発泡することを保証する。この
技術思想により、例えば200Kg／m2の比較的小さ
い比重にすることができる。防炎剤として、３〜
10部のデカブロムジフエニルエーテルと１〜５部
の三酸化アンチモンの混合物が特に有効である。
可撓性及び耐熱性及び機械的強度に関し最良値を
示す混合物は、50〜70部の高密度ポリエチレン
と、30〜50部の低密度ポリエチレンと、２〜４部
のアゾジカーボンアミドと、0.3〜0.7部の１・３
−ビス（第三ブチルペルオキシイソプロピル）−
ベンゾールと、４〜７部のデカブロムジフエニル
エーテルと、３〜4.5部の三酸化アンチモンとか
らなる。 This problem is solved by the high density (ρ) of synthetic resins.
0.945) 50 to 70 parts of polyethylene and low density (ρ
0.94) Using a mixture of 30 to 50 parts of polyethylene, the mixture containing 0.5 to 5 parts of blowing agent and 0.1 to 2 parts of reticulating agent. As the high-density polyethylene, polyethylene commercially available under the trade name "Lupolene 5011K" is used. As the low density polyethylene, polyethylene commercially available under the trade name "Lupolene 2425MX" is used. The ratio of high-density polyethylene to low-density polyethylene is specification dependent on the insulation material. Mixtures containing large amounts of high-density polyethylene are relatively hard and have high heat resistance, while large amounts of low-density polyethylene have the advantage of good flexibility. Especially when pipes are used in houses,
Mixtures to which 4 to 15 parts of flame retardant are added have proven advantageous. Adding a flame retardant essentially eliminates the flammability of the insulation jacket. Azodicarbonamide is particularly preferred as blowing agent. 1,3-bis(tertbutylperoxyisopropyl)-benzole is used as a reticulating agent. The combination of this blowing agent with the abovementioned reticulating agent ensures that upon heating the synthetic resin mixture first becomes at least partially reticulated and then foams. With this technical concept, a relatively low specific gravity of, for example, 200 Kg/m 2 can be achieved. As a flame retardant, 3~
A mixture of 10 parts decabrom diphenyl ether and 1 to 5 parts antimony trioxide is particularly effective.
The mixture that gives the best values in terms of flexibility and heat resistance and mechanical strength is 50-70 parts high-density polyethylene, 30-50 parts low-density polyethylene, 2-4 parts azodicarbonamide and 0.3 parts. ~0.7 parts 1 and 3
-Bis(tert-butylperoxyisopropyl)-
It consists of benzole, 4 to 7 parts of decabromodiphenyl ether, and 3 to 4.5 parts of antimony trioxide.
実施例により本発明を詳細に説明する。 The present invention will be explained in detail by way of examples.
60部の高密度ポリエチレン（ルポレン5011K）
と、40部の低密度ポリエチレン（ルポレン
2425MX）と、３部のアゾジカーボンアミドと、
0.5部の１・３−ビス（第三ブチルペルオキシイ
ソプロピル）−ベンゾールと、5.7部のデカブロム
ジフエニルエーテルと、場合により少量の変質防
止剤を加えた3.8部の三酸化アンチモンとからな
る混合物を混合機内で混合し、この場合、約130
℃の温度に迄加熱する。混合機から押出機ヘツド
に混合物が達し、押出機ヘツド内には軸が回転可
能に支持されている。軸は軸方向貫通孔を有し、
該貫通孔を通じて、絶縁すべき金属管乃至銅線を
案内している。充填口から口金迄の押出機ヘツド
内での搬送中に、混合物はせん断力により更に混
合される。口金から出る混合物の温度は190〜200
℃にもなる。160℃で既に網状化剤の分解が始ま
り、それにより溶融物は網状化し始める。約180
℃でアゾジカーボンアミドが分解し、ガスが発生
し、このガスが発泡作用を行う。合成樹脂混合物
の網状化が既に始まつていることにより、溶融物
の粘性は高くなり、従つてアゾジカーボンアミド
からの遊離せるガスの大部分が混合物内に残存
し、従つて発泡度が著しく高くなる。押出機から
流出するとき、網状化度は少なくとも10％にもな
り、従つて口金から流出する混合物は、管から滴
下することはない。混合物の網状化により、等様
の壁厚の層を形成できる。押出機からでた後に、
混合物は更に網状化し、その際網状化度は50％に
することもできる。 60 parts high density polyethylene (Lupolene 5011K)
and 40 parts of low-density polyethylene (Lupolene)
2425MX), 3 parts of azodicarbonamide,
A mixture of 0.5 parts of 1,3-bis(tert-butylperoxyisopropyl)-benzole, 5.7 parts of decabrom diphenyl ether and 3.8 parts of antimony trioxide, optionally with a small amount of anti-aging agent, was prepared. Mix in a blender, in this case about 130
Heat to a temperature of °C. The mixture passes from the mixer to an extruder head in which a shaft is rotatably supported. The shaft has an axial through hole,
A metal tube or copper wire to be insulated is guided through the through hole. During transport in the extruder head from the filling port to the die, the mixture is further mixed by shear forces. The temperature of the mixture coming out of the nozzle is 190-200
It also becomes ℃. Already at 160° C., the decomposition of the reticulating agent begins, so that the melt begins to reticulate. Approximately 180
Azodicarbonamide decomposes at ℃ and generates gas, which acts as a foaming agent. Because the reticulation of the synthetic resin mixture has already begun, the viscosity of the melt is high, so that most of the liberated gas from the azodicarbonamide remains in the mixture, and the degree of foaming is therefore significant. It gets expensive. When exiting the extruder, the degree of reticulation is also at least 10%, so that the mixture exiting the die does not drip out of the tube. By reticulating the mixture, layers of uniform wall thickness can be formed. After coming out of the extruder,
The mixture can also be reticulated further, the degree of reticulation being 50%.
混合物は、銅からなる家屋内取付け用管２用の
絶縁層１を作るのに特に有利である（添付図面参
照）。 The mixture is particularly advantageous for producing an insulating layer 1 for domestic installation pipes 2 made of copper (see accompanying drawing).
この混合物は、従来以上の発泡度乃至低密度
（200Kg／m3）及びこれ以下のものを特徴とする。
機械的強度はポリエチレンそのものより僅かに小
さい。特に取付け管用の利点は、その低重量にあ
り、又その耐熱性が高いことでもある。本発明に
よる混合物により作られた絶縁層は130℃迄耐え
ることができる。 This mixture is characterized by a higher degree of foaming and a lower density (200 Kg/m 3 ) than before.
The mechanical strength is slightly less than polyethylene itself. The advantage, especially for mounting pipes, is its low weight and also its high heat resistance. Insulating layers made with the mixture according to the invention can withstand up to 130°C.
添付した図面は本発明による混合物からなる絶
縁体をその外側に設けた管体の断面図である。
１……発泡絶縁体、２……管。
The attached drawing is a sectional view of a tube provided on the outside with an insulator made of a mixture according to the invention. 1...foam insulator, 2...tube.
Claims (1)
管を被覆する、発泡合成樹脂からなる絶縁体から
なる断熱した導管に於て、合成樹脂として高密度
（ρ0.945）ポリエチレン50〜70部及び低密度
（ρ0.94）ポリエチレン30〜50部からなる混合
物を使用し、その際該混合物は発泡剤0.5〜５部
及び網状化剤0.1〜２部を含有することを特徴と
する上記導管。 ２ 50〜70部の高密度ポリエチレン、 30〜50部の低密度ポリエチレン、 ２〜４部の発泡剤及び 0.3〜１部の網状化剤からなる特許請求の範囲
第１項に記載の断熱した導管。 ３ ４〜15部の防炎剤を加えた特許請求の範囲第
１項又は第２項に記載の断熱した導管。 ４ 発泡剤としてアゾジカーボンアミドを用いて
いる特許請求の範囲第１項乃至第３項のいずれか
に記載の断熱した導管。 ５ 網状化剤として１・３−ビス（テルトブチル
ペルオキシイソプロピル）−ベンゾールを用いて
いる特許請求の範囲第１項乃至第４項のいずれか
に記載の断熱した導管。 ６ 防炎剤として、３〜10部のデカブロムジフエ
ニルエーテル及び１〜５部の三酸化アンチモン
（Sb2O3）を用いている特許請求の範囲第１項乃至
第５項のいずれかに記載の断熱した導管。 ７ 50〜70部の高密度ポリエチレン、 30〜50部の低密度ポリエチレン、 ２〜４部のアゾジカーボンアミド、 0.3〜0.7％の１・３−ビス（テルトブチルペル
オキシイソプロピル）−ベンゾール、４〜７部の
デカブロムジフエニルエーテル及び３〜4.5部の
三酸化アンチモンからなる特許請求の範囲第１項
乃至第６項のいずれかに記載の断熱した導管。[Scope of Claims] 1. In a metal tube that guides a cold or hot liquid medium and an insulated conduit made of an insulator made of foamed synthetic resin covering this metal tube, the synthetic resin has a high density (ρ0.945). A mixture is used consisting of 50 to 70 parts of polyethylene and 30 to 50 parts of low density (ρ 0.94) polyethylene, characterized in that the mixture contains 0.5 to 5 parts of blowing agent and 0.1 to 2 parts of reticulating agent. The above-mentioned conduit. 2. The insulated conduit according to claim 1, comprising 50 to 70 parts of high density polyethylene, 30 to 50 parts of low density polyethylene, 2 to 4 parts of blowing agent and 0.3 to 1 part of reticulating agent. . 3. An insulated conduit according to claim 1 or claim 2, with the addition of 4 to 15 parts of flame retardant. 4. The insulated conduit according to any one of claims 1 to 3, wherein azodicarbonamide is used as a blowing agent. 5. An insulated conduit according to any one of claims 1 to 4, in which 1,3-bis(tertbutylperoxyisopropyl)-benzole is used as the reticulating agent. 6. Any one of claims 1 to 5 in which 3 to 10 parts of decabrom diphenyl ether and 1 to 5 parts of antimony trioxide (Sb 2 O 3 ) are used as flame retardants. Insulated conduit as described. 7 50-70 parts high-density polyethylene, 30-50 parts low-density polyethylene, 2-4 parts azodicarbonamide, 0.3-0.7% 1,3-bis(tertbutylperoxyisopropyl)-benzole, 4- 7. An insulated conduit according to any of claims 1 to 6, comprising 7 parts decabrom diphenyl ether and 3 to 4.5 parts antimony trioxide.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2724454A DE2724454C2 (en) | 1977-05-31 | 1977-05-31 | Mixture for the production of foamed insulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS53149267A JPS53149267A (en) | 1978-12-26 |
| JPS6224450B2 true JPS6224450B2 (en) | 1987-05-28 |
Family
ID=6010272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1864578A Granted JPS53149267A (en) | 1977-05-31 | 1978-02-22 | Mixture for making foamed insulator |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS53149267A (en) |
| AR (1) | AR213333A1 (en) |
| AT (1) | AT368538B (en) |
| BE (1) | BE867673A (en) |
| CH (1) | CH630398A5 (en) |
| DE (1) | DE2724454C2 (en) |
| DK (1) | DK499077A (en) |
| ES (1) | ES463362A1 (en) |
| FR (1) | FR2393408A1 (en) |
| GB (1) | GB1552204A (en) |
| IT (1) | IT1093099B (en) |
| NL (1) | NL7709996A (en) |
| NO (1) | NO781871L (en) |
| SE (1) | SE7806200L (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2915188C2 (en) * | 1979-04-10 | 1983-02-17 | Siemens AG, 1000 Berlin und 8000 München | Plastic-insulated electrical cable with a flame-retardant inner sheath |
| DE3424269C2 (en) * | 1984-06-30 | 1994-01-27 | Krupp Ag | Device for producing reinforced profiles and reinforced hoses |
| US6365268B1 (en) | 2000-06-05 | 2002-04-02 | Fmc Corporation | Deep sea insulation material |
| EP1070906A1 (en) * | 1999-07-16 | 2001-01-24 | Fmc Corporation | Deep sea insulation material |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1640350A1 (en) * | 1966-11-11 | 1970-09-17 | Kabel Metallwerke Ghh | Process for the production of telecommunication wires with a foam insulation |
| GB1434775A (en) * | 1973-01-17 | 1976-05-05 | Sumitomo Electric Industries | Insulating wires and cables with highly expanded polyolefin |
| DE2615317C3 (en) * | 1976-04-06 | 1979-08-02 | Aeg-Telefunken Kabelwerke Ag, Rheydt, 4050 Moenchengladbach | Electrical insulation material for communication cables |
-
1977
- 1977-05-31 DE DE2724454A patent/DE2724454C2/en not_active Expired
- 1977-08-22 CH CH1027077A patent/CH630398A5/en not_active IP Right Cessation
- 1977-09-06 AT AT0640377A patent/AT368538B/en not_active IP Right Cessation
- 1977-09-12 NL NL7709996A patent/NL7709996A/en not_active Application Discontinuation
- 1977-10-19 ES ES463362A patent/ES463362A1/en not_active Expired
- 1977-10-20 FR FR7731653A patent/FR2393408A1/en active Granted
- 1977-10-25 IT IT51552/77A patent/IT1093099B/en active
- 1977-10-31 AR AR269789A patent/AR213333A1/en active
- 1977-11-10 DK DK499077A patent/DK499077A/en not_active Application Discontinuation
- 1977-12-13 GB GB51780/77A patent/GB1552204A/en not_active Expired
-
1978
- 1978-02-22 JP JP1864578A patent/JPS53149267A/en active Granted
- 1978-05-30 SE SE7806200A patent/SE7806200L/en unknown
- 1978-05-30 NO NO78781871A patent/NO781871L/en unknown
- 1978-05-31 BE BE188208A patent/BE867673A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2393408B1 (en) | 1982-12-10 |
| GB1552204A (en) | 1979-09-12 |
| ES463362A1 (en) | 1978-07-16 |
| ATA640377A (en) | 1982-02-15 |
| IT1093099B (en) | 1985-07-19 |
| JPS53149267A (en) | 1978-12-26 |
| NL7709996A (en) | 1978-12-04 |
| DE2724454A1 (en) | 1978-12-14 |
| NO781871L (en) | 1978-12-01 |
| DE2724454C2 (en) | 1986-08-14 |
| DK499077A (en) | 1978-12-01 |
| AT368538B (en) | 1982-10-25 |
| SE7806200L (en) | 1978-12-01 |
| AR213333A1 (en) | 1979-01-15 |
| FR2393408A1 (en) | 1978-12-29 |
| BE867673A (en) | 1978-11-30 |
| CH630398A5 (en) | 1982-06-15 |
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