JPH02153955A - Polyethylene composition for water pipe - Google Patents
Polyethylene composition for water pipeInfo
- Publication number
- JPH02153955A JPH02153955A JP16991788A JP16991788A JPH02153955A JP H02153955 A JPH02153955 A JP H02153955A JP 16991788 A JP16991788 A JP 16991788A JP 16991788 A JP16991788 A JP 16991788A JP H02153955 A JPH02153955 A JP H02153955A
- Authority
- JP
- Japan
- Prior art keywords
- polyethylene
- imino
- resin
- weight
- parts
- 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 Polyethylene Polymers 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 23
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 23
- 239000000203 mixture Substances 0.000 title claims abstract description 22
- 229920013716 polyethylene resin Polymers 0.000 claims abstract description 20
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 15
- 229920001748 polybutylene Polymers 0.000 claims abstract description 11
- 125000001841 imino group Chemical group [H]N=* 0.000 claims abstract description 10
- HXIQYSLFEXIOAV-UHFFFAOYSA-N 2-tert-butyl-4-(5-tert-butyl-4-hydroxy-2-methylphenyl)sulfanyl-5-methylphenol Chemical compound CC1=CC(O)=C(C(C)(C)C)C=C1SC1=CC(C(C)(C)C)=C(O)C=C1C HXIQYSLFEXIOAV-UHFFFAOYSA-N 0.000 claims description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052801 chlorine Inorganic materials 0.000 abstract description 11
- 239000000460 chlorine Substances 0.000 abstract description 11
- 239000003963 antioxidant agent Substances 0.000 abstract description 4
- 239000006229 carbon black Substances 0.000 abstract description 4
- 150000001412 amines Chemical class 0.000 abstract description 3
- 230000003078 antioxidant effect Effects 0.000 abstract description 2
- 239000000326 ultraviolet stabilizing agent Substances 0.000 abstract description 2
- 238000003776 cleavage reaction Methods 0.000 abstract 1
- 230000007017 scission Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 238000002156 mixing Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 235000019241 carbon black Nutrition 0.000 description 3
- 239000011342 resin composition Substances 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 239000012963 UV stabilizer Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 1
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 1
- CYEKUDPFXBLGHH-UHFFFAOYSA-N 3-tert-Butylphenol Chemical compound CC(C)(C)C1=CC=CC(O)=C1 CYEKUDPFXBLGHH-UHFFFAOYSA-N 0.000 description 1
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 1
- 239000006231 channel black Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- GKHRLTCUMXVTAV-UHFFFAOYSA-N dimoracin Chemical compound C1=C(O)C=C2OC(C3=CC(O)=C(C(=C3)O)C3C4C(C5=C(O)C=C(C=C5O3)C=3OC5=CC(O)=CC=C5C=3)C=C(CC4(C)C)C)=CC2=C1 GKHRLTCUMXVTAV-UHFFFAOYSA-N 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000006232 furnace black Substances 0.000 description 1
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920005678 polyethylene based resin Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- XJKVPKYVPCWHFO-UHFFFAOYSA-N silicon;hydrate Chemical compound O.[Si] XJKVPKYVPCWHFO-UHFFFAOYSA-N 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000006234 thermal black Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、永年使用しても水道水によって侵されること
のない水道用ポリエチレンパイプを製造するためのポリ
エチレン組成物に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a polyethylene composition for producing polyethylene pipes for water service that will not be attacked by tap water even after long-term use.
ポリエチレンは耐薬品性が優れ、生理的に無毒である上
、安価で加工が容易であるため、水道用小口径管として
従来の鉛管や鉄管に代わって、広く使用されている。Polyethylene has excellent chemical resistance, is physiologically non-toxic, is inexpensive, and is easy to process, so it is widely used as a small-diameter water pipe in place of conventional lead pipes and iron pipes.
水道用ポリエチレン管は ＪＩＳ Ｋ−６７６２によ
れば、引張強度により、１種管（軟質管）および２種管
（硬質管）に分けられる。しかし１種管の枝管から受水
している消費者の蛇口がポリエチレン管から剥離脱落し
たと推定される薄片状異物によって閉塞するという事故
が、地域によっては発生しており、これに対して、種々
の対策が提案されている。ポリエチレンの憐れた耐薬品
性は、その出現以来一般に認められており、事実、ポリ
エチレン性の容器および管は、酸、アルカリをはじめ各
種薬品の貯蔵および輸送にひろく使用されている。従っ
て、微量の不純物を含むに過ぎない飲料用水道水の給水
用にポリエチレン管が採用されていることは当然な事で
あるが、殺菌のために添加されている塩素のためのパイ
プ内面が層状に剥離する問題がおきており、これを解決
するため、従来、水酸化アルミニウムを添加したポリエ
チレン組成物（特公昭５９−２３５７５）、ポリブテン
−１樹脂を添加したポリエチレン組成物（特公昭６２−
５１８５）等が提案されているが十分ではない。According to JIS K-6762, polyethylene pipes for water supply are classified into type 1 pipes (soft pipes) and type 2 pipes (hard pipes) depending on their tensile strength. However, in some areas, accidents have occurred where consumer faucets receiving water from branch pipes of Class 1 pipes are blocked by flaky foreign matter that is presumed to have fallen off from polyethylene pipes. , various countermeasures have been proposed. The poor chemical resistance of polyethylene has been generally recognized since its introduction, and in fact, polyethylene containers and tubing are widely used for the storage and transportation of various chemicals, including acids and alkalis. Therefore, it is natural that polyethylene pipes are used to supply drinking water that contains only trace amounts of impurities, but the inner surface of the pipe is layered due to the chlorine added for sterilization. In order to solve this problem, conventionally, polyethylene compositions containing aluminum hydroxide (Japanese Patent Publication No. 59-23575) and polyethylene compositions containing polybutene-1 resin (Japanese Patent Publication No. 62-1989) have been developed.
5185) etc. have been proposed, but they are not sufficient.
水道用ポリエチレンパイプは、−旦埋設工事を行うと容
易には再工事を行うことは出来ないので、長時間使用し
ても塩素によって剥離が生じないことが望まれる。Once a polyethylene pipe for water service has been buried, it cannot be easily rebuilt, so it is desirable that the pipe should not peel off due to chlorine even after long-term use.
本発明は微量の塩素を含有する水道水によっても内面の
剥離を生じないポリエチレン組成物の提供を課題とする
。An object of the present invention is to provide a polyethylene composition whose inner surface does not peel off even when exposed to tap water containing a trace amount of chlorine.
本発明者等は、このような技術的課題を解決するために
、鋭意研究の結果、ポリエチレン系樹脂に対して特定の
酸化防ｌヒ剤および紫外線安定剤を配合することにより
、耐塩素水剥離性を宥するポリエチレン系樹脂組成物を
見出した。In order to solve these technical problems, the present inventors conducted extensive research and found that by blending specific antioxidants and UV stabilizers into polyethylene resin, chlorine water-resistant peeling We have discovered a polyethylene-based resin composition that softens the skin.
更に、そのようなポリエチレン系樹脂組成物に於て、ポ
リエチレン系樹脂の一部をポリブテン−１樹脂で置換す
るとＦＭ＃４素水剥離水剥離性一層向上することを知っ
た。Furthermore, it has been found that in such a polyethylene resin composition, when a part of the polyethylene resin is replaced with polybutene-1 resin, the water releasability of FM#4 can be further improved.
即ち、本発明は
（１） （Ａ）ポリエチレン系樹脂１００重量部、（Ｂ
） ４ 、４ ’−チオビスー（３−メチル−６−ｔ−
ブチル−フェノール） ０．０３〜０．１重量部及び
（Ｃ）ポリ〔｛６−（１，１，３，３−テトラメチルブ
チル）イミノ−１，３，５−トリアジン−２，４−ジイ
ル｝｛（２，２６，６−チトラメチル−４−ピペリジル
ンイミノ｝ヘキサメチレン｛（２、２、６ローテトラメ
チルー４−ピペリジル）イミノ） ） ０．０２〜１．
０重量部からなる水道パイプ用ポリエチレン組成物。That is, the present invention includes (1) (A) 100 parts by weight of polyethylene resin, (B)
) 4,4'-Thiobis(3-methyl-6-t-
butyl-phenol) 0.03 to 0.1 part by weight and (C) poly[{6-(1,1,3,3-tetramethylbutyl)imino-1,3,5-triazine-2,4-diyl }{(2,26,6-titramethyl-4-piperidylinimino}hexamethylene {(2,2,6rotetramethyl-4-piperidyl)imino) ) 0.02-1.
A polyethylene composition for water pipes consisting of 0 parts by weight.
及び、
（２） （Ａ）ポリエチレン系樹脂とポリブテン−１樹
脂からなる樹脂混合物１００重量部、
（Ｂ） ４ 、４°−チオビス−（３−メチル−６−七
−プチル−フェノール） ０．０３〜０．）重量部及び
（Ｃ）ポリ〔｛６−（１，１，３，３−テトラメチルブ
チル）イミノ−１，３，５−１リアジン−２，４−ジイ
ル｝｛（２，２６，６−チトラメチル−４−ビペリジル
ンイミノ｝ヘキサメチレン｛（２、２、６ローテトラメ
チルー４−ピペリジル）イミノ’ｊ ） ０．０２〜１
．０重量部からなる水道パイプ用ポリエチレン組成物。and (2) (A) 100 parts by weight of a resin mixture consisting of polyethylene resin and polybutene-1 resin, (B) 4,4°-thiobis-(3-methyl-6-7-butyl-phenol) 0.03 ~0. ) parts by weight and (C) poly[{6-(1,1,3,3-tetramethylbutyl)imino-1,3,5-1 riazine-2,4-diyl}{(2,26,6- Titramethyl-4-biperidylinimino}hexamethylene {(2,2,6rotetramethyl-4-piperidyl)imino'j ) 0.02-1
．． A polyethylene composition for water pipes consisting of 0 parts by weight.
に関するものである。It is related to.
本発明で使用するポリエチレン系樹脂とは、エチレン１
独の重合体、エチレンと他のモノマ例えばプロピレン、
ブテン、４−メチル−ペンテン−１、ヘキセン、オクテ
ン等との共重合体又はこれらの混合物を意味し本発明の
目的を損なわない範囲で、他の熱可塑性樹脂を混合して
もよい、具体的には高圧法低密度ポリエチレン、高密度
ポリエチレン、気相法直鎖低密度ポリエチレン、気相法
超低密度ポリエチレン等を意味する０本発明で使用する
４、４゛−チオビス−（３−メチル−６−ｔ−プチルー
フェノ−ル）は下記のイレ学構造式を有する酸化防止剤
であり、例えば５ｅｅｎｏｘ ＢＣＳという商品名で
市販されているものである。The polyethylene resin used in the present invention is ethylene 1
German polymers, ethylene and other monomers such as propylene,
It means a copolymer with butene, 4-methyl-pentene-1, hexene, octene, etc., or a mixture thereof, and may be mixed with other thermoplastic resins as long as the purpose of the present invention is not impaired. 4,4゛-thiobis-(3-methyl- 6-t-butylphenol) is an antioxidant having the chemical structural formula shown below, and is commercially available, for example, under the trade name 5eenox BCS.
ノ）〕は下記の化学構造式を有するヒンダードアミン系
紫外線安定剤であり１例えば
ＣＨＩＭＡＳＳＯＲＢ ９４４ＬＤという商品名で市
販されているものである。(c)] is a hindered amine UV stabilizer having the chemical structural formula shown below, and is commercially available, for example, under the trade name CHIMASSORB 944LD.
Ｈ３ＣＨ３
本発明においては４．４°−チオビス−（３−メチル−
５−ｔ−ブチル−フェノール）のポリエチレン系樹脂に
対する配合量は、ポリエチレン系樹脂１００重量部に対
して０．０３〜０．１重量部の範囲であり、配合量が０
．０３重量部未満では耐塩素水剥離性の改善効果がなく
、０．１重量部をこえるとブリードアウト現象を生じ好
ましくない０本発明において使用するポリ［６−（１，
１，３，３−テトラメチルブチル）イミノ−１，３，５
−トリアジン−２，４−ジイル｝｛（２，２，６，６−
テトラメチル−４−ピペリジル）イミノ｝ヘキサメチレ
ン｛（２，２，６．６−テトラメチル−４−ピペリジル
）イミ本発明において上記のヒンダードアミン系紫外線
安定剤のポリエチレン系樹脂に対する配合量は、ポリエ
チレン系樹１１Ｖ１１０Ｇ重畢部に対して０．０２〜１
．０重量部の範囲であり、好ましくは０．０３〜０．２
重量部である。配合量が０．０２重量部未満では耐塩素
水剥離性の改善が十分でなく、１．０重量部より高濃度
にしても改良効果は飽和するため経済的見地から１．０
重量部具との添加は好ましくない０本発明においてはポ
リエチレン系樹脂の一部をポリブテン−１で置換すると
耐塩素水剥離性の効果の改善が顕著である。H3CH3 In the present invention, 4.4°-thiobis-(3-methyl-
The blending amount of (5-t-butyl-phenol) in the polyethylene resin is in the range of 0.03 to 0.1 parts by weight per 100 parts by weight of the polyethylene resin, and the blending amount is 0.
．． If the amount is less than 3 parts by weight, there is no effect of improving the chlorine water peeling resistance, and if it exceeds 0.1 part by weight, a bleed-out phenomenon occurs, which is undesirable.
1,3,3-tetramethylbutyl)imino-1,3,5
-triazine-2,4-diyl} {(2,2,6,6-
Tetramethyl-4-piperidyl)imino}hexamethylene {(2,2,6.6-tetramethyl-4-piperidyl)imino In the present invention, the amount of the hindered amine ultraviolet stabilizer to the polyethylene resin is 0.02-1 for tree 11V110G heavy part
．． 0 parts by weight, preferably 0.03 to 0.2 parts by weight.
Parts by weight. If the blending amount is less than 0.02 parts by weight, the improvement in chlorine water peeling resistance will not be sufficient, and even if the concentration is higher than 1.0 parts by weight, the improvement effect will be saturated, so from an economical point of view, 1.0 parts by weight.
Addition with heavy parts is not preferred. In the present invention, when a part of the polyethylene resin is replaced with polybutene-1, the effect of chlorine water peeling resistance is significantly improved.
本発明で使用するポリブテン−１樹脂とはブテン−１単
独の高アイソタクチックで超高分子量ポリマーであり、
三井石油化学より三井石化ポリブテンなる商品名で市販
されている樹脂である。ポリエチレン系樹脂に添加する
ポリブテン−１樹脂の効果は添加量に比例して増大する
が添加量の極端な増加は経済性に問題が生ずる。The polybutene-1 resin used in the present invention is a highly isotactic and ultra-high molecular weight polymer of butene-1 alone,
This resin is commercially available from Mitsui Petrochemical under the trade name Mitsui Petrochemical Polybutene. The effect of polybutene-1 resin added to polyethylene resin increases in proportion to the amount added, but an extreme increase in the amount added causes problems in economic efficiency.
また、本発明の組成物に対しては、パイプに紫外線遮断
効果を付与するために、カーボンブラックを配合するの
が好ましい、使用することのできるカーボンブラックは
、天然黒鉛、ファーネスブラック、アセチレンブラック
、チャンネルブラック、サーマルブラック、ケッチエン
ブラック等であり、そのポリエチレン系樹脂、乃至ポリ
エチレン系樹脂とポリブテン−１樹脂の混合物１００重
量部に対する配合量は０．１乃至３重量部が好ましい、
配合量が０．１重置部未満では紫外線遮断効果がなく、
また３重量部以上では紫外線遮断効果が飽和点に達し、
３重量部具ト更に追加しても、その効果はない。Further, it is preferable to incorporate carbon black into the composition of the present invention in order to impart an ultraviolet blocking effect to the pipe. Carbon blacks that can be used include natural graphite, furnace black, acetylene black, Channel black, thermal black, Ketchen black, etc., and the amount thereof is preferably 0.1 to 3 parts by weight per 100 parts by weight of the polyethylene resin or the mixture of polyethylene resin and polybutene-1 resin.
If the blending amount is less than 0.1 parts, there will be no UV blocking effect;
In addition, if the amount exceeds 3 parts by weight, the UV blocking effect will reach the saturation point.
Adding 3 more heavy parts has no effect.
更に、本発明の水道用ポリエチレン組成物には通常公知
の樹脂組成物に用いられる各種の添加剤を含むことがで
きる。Furthermore, the polyethylene composition for water supply of the present invention can contain various additives commonly used in known resin compositions.
この様な添加剤としては、混和可能な各種熱可塑性樹脂
、安定剤、酸化防止剤、充填剤、着色剤１発泡剤、架橋
剤、滑剤、加工性改良剤、帯電防止剤等がある。以下に
、実施例をもって本発明の詳細な説明するが本発明はこ
の実施例に限定されるものではない。Such additives include miscible thermoplastic resins, stabilizers, antioxidants, fillers, colorants, blowing agents, crosslinking agents, lubricants, processability improvers, antistatic agents, and the like. The present invention will be described in detail below with reference to Examples, but the present invention is not limited to these Examples.
各種ポリエチレン系樹脂１００重量部又はこれにポリブ
テン−１樹脂街添加した樹脂成分１００重量部に４．４
°−チオビス−（３−メチル−５−ｔ−ブチル−フェノ
ール）を０．０４重酸部。4.4 parts by weight for 100 parts by weight of various polyethylene resins or 100 parts by weight of resin components added with polybutene-1 resin.
°-Thiobis-(3-methyl-5-t-butyl-phenol) 0.04 parts of heavy acid.
ポリ［６−（１，１，３，３−テトラメチルブチル）イ
ミノ−１，３，５−トリアジン−２，４−ジイル）
〔｛２，２，６，６−テトラメチル−４−ピペリジル）
イミノ｝ヘキサメチレン｛（２，２，６，６−テトラメ
チル−４−ピペリジル）イミノ）〕を０．０５ｆｉ量部
、カーボンブラックを２重量部及びその他の成分を添加
しそれぞれ均一に混練し本発明の水道パイプ用組成物を
得た。各成分の混練方法はバンバリーミキサ−、ニーグ
ー、二本ロール、リボンブレンダー、ヘンシェルミキサ
ー等を用い、各７１は同時に混合してもよいし、又は適
当な成分に分け、マスターバッチをつくり、その後に樹
脂成分に混合してもよい、Ｆ記の方法で得た本発明の水
道パイプ用ポリエチレン組成物をパイプ押出機により下
記の条件でパイプに成形した。poly[6-(1,1,3,3-tetramethylbutyl)imino-1,3,5-triazine-2,4-diyl)
[{2,2,6,6-tetramethyl-4-piperidyl)
Add 0.05 parts of hexamethylene ((2,2,6,6-tetramethyl-4-piperidyl)imino), 2 parts by weight of carbon black, and other ingredients, and knead them uniformly. A composition for water pipes according to the invention was obtained. The kneading method for each component is to use a Banbury mixer, Nigoo, two-roll mixer, ribbon blender, Henschel mixer, etc. Each component may be mixed at the same time, or it may be divided into appropriate components to make a masterbatch, and then The polyethylene composition for water pipes of the present invention, which may be mixed with the resin component, obtained by the method described in F, was molded into a pipe using a pipe extruder under the following conditions.
・パイプサイズ（ＪＩＳ６７６２の呼び径２０ｍ１）外
径：２７ｍｍ
内径：４．０−ｍ
・パイプの押出成形条件
押出機二田原機］：ＴＶ −８５型
膜定温度：Ｃ１ｃ２ Ｃｓ ＨＤＩＤ２（”０）
１８０ １８０ １１１１０ １θ０ １６０
１ｆｌＯパイプサイジング及び冷却：
池貝鉄工 ２６０バキユーム水槽
パイプ引取り：引取速度１．８ｍ／ｗｉｎ成形されたパ
イプの耐塩素水試験は ＪＩＳＫ６７６２ （水道用Ｐ
Ｅバイブ）の付属２の試験方法によって行った。但し塩
素濃度は２．０００ｐｐｍとし、４０℃で １．０００
ｈｒｓまでのパイプ内面外面の水泡発生状況を目視に
より観察し、その結果を１０段階評点で評価した。即ち
０は水泡が全く発生していない状況であり１０は水泡が
全面に発生している状況である。・Pipe size (JIS6762 nominal diameter 20m1) Outer diameter: 27mm Inner diameter: 4.0-m ・Pipe extrusion molding conditions Extruder Nidahara machine]: TV-85 type membrane constant temperature: C1c2 Cs HDID2 ("0)
180 180 11110 1θ0 160
1 flO pipe sizing and cooling: Ikegai Iron Works 260 Vacuum tank pipe take-up: take-up speed 1.8 m/win The chlorine water resistance test of the formed pipe is JISK6762 (P for water supply)
The test was conducted according to the test method in Appendix 2 of E-Vibe). However, the chlorine concentration is 2.000 ppm and 1.000 ppm at 40°C.
The occurrence of blisters on the inner and outer surfaces of the pipe up to hrs was visually observed, and the results were evaluated on a 10-point scale. That is, 0 is a situation where no blisters are generated, and 10 is a situation where blisters are generated all over the surface.
結果を第１表に示す、第１表の比較例及び実施例からポ
リエチレン系樹脂に４．４°−チオビス−（３−メチル
−６−ｔ−ブチル−フェノール）とポリ〔｛６−（１，
１，３，３−テトラメチルブチル）イミノ−１，３，５
−１リアジン−２，４−ジイル） 〔｛２，２，６，
６−テトラメチル−４−ピペリジル）イミノ）ヘキサメ
チレン〔｛２，２，６，６−テトラメチル−４−ピペリ
ジル）イミノ）〕を併用配合するとその相乗効果により
耐塩素水剥離性が顕著に向上することが、また、ポリエ
チレン樹脂成分の一部をポリブテン−１樹脂で置換する
と更にｌｌ￥Ｆｌ珈素水剥離性効果が増強されることが
わかる。The results are shown in Table 1. From the comparative examples and examples in Table 1, polyethylene resins containing 4.4°-thiobis-(3-methyl-6-t-butyl-phenol) and poly[{6-(1 ，
1,3,3-tetramethylbutyl)imino-1,3,5
-1 riazine-2,4-diyl) [{2,2,6,
When combined with 6-tetramethyl-4-piperidyl)imino)hexamethylene [{2,2,6,6-tetramethyl-4-piperidyl)imino], the synergistic effect significantly improves the chlorine water stripping resistance. It is also found that when a part of the polyethylene resin component is replaced with polybutene-1 resin, the ll\Fl silicon water releasability effect is further enhanced.
本発明のポリエチレン組成物は耐塩素水剥離性が顕著に
改善されているため、該組成物から構成された水道用ポ
リエチレン管は、薄片状異物のポリエチレン管からの剥
離乃至該薄片状異物による蛇口の閉塞等の事故を起すこ
となく長第１間にわたって水道管として使用することが
できるという顕著な効果を奏するものである。Since the polyethylene composition of the present invention has significantly improved peeling resistance against chlorinated water, polyethylene pipes for water supply made of the composition are free from peeling of flaky foreign matter from the polyethylene pipe or from faucets caused by the flaky foreign matter. This has the remarkable effect that it can be used as a water pipe for a long period of time without causing accidents such as blockages.
特許出願人 日本ユニカー株式会社Patent applicant: Nippon Unicar Co., Ltd.
Claims (2)
４，４’−チオビス−（３−メチル−６−ｔ−ブチル−
フェノール）０．０３〜０．１重量部及び （Ｃ）ポリ〔｛６−（１，１，３，３−テトラメチルブ
チル）イミノ−１，３，５−ト リアジン−２，４−ジイル｝｛（２，２ ６，６−テトラメチル−４−ピペリジル） イミノ｝ヘキサメチレン｛（２，２，６， ６−テトラメチル−４−ピペリジル）イ ミノ｝〕０．０２〜１．０重量部からなる水道パイプ用
ポリエチレン組成物。(1) (A) 100 parts by weight of polyethylene resin, (B)
4,4'-thiobis-(3-methyl-6-t-butyl-
phenol) 0.03 to 0.1 part by weight and (C) poly[{6-(1,1,3,3-tetramethylbutyl)imino-1,3,5-triazine-2,4-diyl}{ (2,2 6,6-tetramethyl-4-piperidyl)imino}hexamethylene {(2,2,6, 6-tetramethyl-4-piperidyl)imino}] 0.02 to 1.0 parts by weight Polyethylene composition for water pipes.
からなる樹脂混合物１００重量部、 （Ｂ）４，４’−チオビス−（３−メチル−６−ｔ−ブ
チル−フェノール）０．０３〜０．１重量部及び （Ｃ）ポリ〔｛６−（１，１，３，３−テトラメチルブ
チル）イミノ−１，３，５−ト リアジン−２，４−ジイル｝｛（２，２， ６，６−テトラメチル−４−ピペリジル） イミノ｝ヘキサメチレン｛（２，２，６， ６−テトラメチル−４−ピペリジル）イ ミノ｝〕０．０２〜１．０重量部からなる水道パイプ用
ポリエチレン組成物。(2) (A) 100 parts by weight of a resin mixture consisting of polyethylene resin and polybutene-1 resin, (B) 0.03 to 0 4,4'-thiobis-(3-methyl-6-t-butyl-phenol) .1 part by weight and (C) poly[{6-(1,1,3,3-tetramethylbutyl)imino-1,3,5-triazine-2,4-diyl}{(2,2,6, Polyethylene composition for water pipes consisting of 0.02 to 1.0 parts by weight of 6-tetramethyl-4-piperidyl)imino}hexamethylene {(2,2,6,6-tetramethyl-4-piperidyl)imino} .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16991788A JPH02153955A (en) | 1988-07-07 | 1988-07-07 | Polyethylene composition for water pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16991788A JPH02153955A (en) | 1988-07-07 | 1988-07-07 | Polyethylene composition for water pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02153955A true JPH02153955A (en) | 1990-06-13 |
Family
ID=15895349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16991788A Pending JPH02153955A (en) | 1988-07-07 | 1988-07-07 | Polyethylene composition for water pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02153955A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0486255A (en) * | 1990-07-31 | 1992-03-18 | Nippon Steel Corp | Polyolefin coated steel pipe for high temperature buried piping for controlling heat oxidative deterioration of coating generated by sand and earth |
| JPH11293049A (en) * | 1998-04-09 | 1999-10-26 | Nippon Polyolefin Kk | Polyethylene resin composition for water pipe, water pipe and water pipe joint |
| JP2005089525A (en) * | 2003-09-12 | 2005-04-07 | Nippon Unicar Co Ltd | Ethylene resin composition for container for hypochlorite-containing composition, and container made from the same |
| JP2006508237A (en) * | 2002-11-28 | 2006-03-09 | バセル ポリオレフィン イタリア エス．アール．エル． | Butene-1 copolymers and methods for producing them |
| US20100016481A1 (en) * | 2006-10-02 | 2010-01-21 | Borealis Technology Oy | Polyolefin composition with increased resistance to cio2-containing water |
-
1988
- 1988-07-07 JP JP16991788A patent/JPH02153955A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0486255A (en) * | 1990-07-31 | 1992-03-18 | Nippon Steel Corp | Polyolefin coated steel pipe for high temperature buried piping for controlling heat oxidative deterioration of coating generated by sand and earth |
| JPH11293049A (en) * | 1998-04-09 | 1999-10-26 | Nippon Polyolefin Kk | Polyethylene resin composition for water pipe, water pipe and water pipe joint |
| JP2006508237A (en) * | 2002-11-28 | 2006-03-09 | バセル ポリオレフィン イタリア エス．アール．エル． | Butene-1 copolymers and methods for producing them |
| JP2005089525A (en) * | 2003-09-12 | 2005-04-07 | Nippon Unicar Co Ltd | Ethylene resin composition for container for hypochlorite-containing composition, and container made from the same |
| US20100016481A1 (en) * | 2006-10-02 | 2010-01-21 | Borealis Technology Oy | Polyolefin composition with increased resistance to cio2-containing water |
| US20140109975A1 (en) * | 2006-10-02 | 2014-04-24 | Borealis Technology Oy | Polyolefin composition with increased resistance to cio2-containing water |
| US9376548B2 (en) | 2006-10-02 | 2016-06-28 | Borealis Technology Oy | Polyolefin composition with increased resistance to ClO2-containing water |
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