JPH10296821A - Chlorinated vinyl chloride resin pipe for sprinkler piping - Google Patents
Chlorinated vinyl chloride resin pipe for sprinkler pipingInfo
- Publication number
- JPH10296821A JPH10296821A JP9109000A JP10900097A JPH10296821A JP H10296821 A JPH10296821 A JP H10296821A JP 9109000 A JP9109000 A JP 9109000A JP 10900097 A JP10900097 A JP 10900097A JP H10296821 A JPH10296821 A JP H10296821A
- Authority
- JP
- Japan
- Prior art keywords
- vinyl chloride
- chloride resin
- chlorinated
- chlorinated vinyl
- degree
- 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
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- Processes Of Treating Macromolecular Substances (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、耐熱性、耐衝撃性
に優れたスプリンクラー配管用塩素化塩化ビニル樹脂管
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chlorinated vinyl chloride resin tube for sprinkler piping having excellent heat resistance and impact resistance.
【０００２】[0002]
【従来の技術】スプリンクラー配管用管材には高い信頼
性が要求され、特に、耐熱性や耐衝撃性に優れている必
要がある。このため、従来は、スプリンクラー配管用管
材としては鋼管のみしか認められていなかった。しかし
ながら、鋼管によるスプリンクラー配管は、長期間の使
用により錆が発生するといった問題や、スプリンクラー
配管は天井等の高所に施工される場合が多いため、重量
の重い鋼管では非常に施工性が悪いという問題があっ
た。2. Description of the Related Art High reliability is required for a tube material for a sprinkler piping, and in particular, it is necessary to be excellent in heat resistance and impact resistance. For this reason, conventionally, only a steel pipe was accepted as a pipe material for sprinkler piping. However, sprinkler pipes made of steel pipes have problems such as rusting due to long-term use, and sprinkler pipes are often installed in high places such as ceilings. There was a problem.
【０００３】このような問題のないものとして、合成樹
脂管が注目されている。合成樹脂管としては、例えば、
特開平２−６５５０号公報に、塩素化塩化ビニル樹脂に
特定の充填剤を配合したものが開示されている。しかし
ながら、このような従来の合成樹脂管はいずれも、スプ
リンクラー配管用管材として用いるには、耐熱性、耐衝
撃性等が充分であるとはいえなかった。[0003] Synthetic resin pipes have been attracting attention as having no such problems. As a synthetic resin tube, for example,
Japanese Patent Application Laid-Open No. 2-6550 discloses a chlorinated vinyl chloride resin in which a specific filler is blended. However, none of these conventional synthetic resin pipes has sufficient heat resistance, impact resistance, and the like to be used as a pipe material for a sprinkler pipe.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、上記に鑑
み、耐熱性及び耐衝撃性を兼ね備えたスプリンクラー配
管用塩素化塩化ビニル樹脂管を提供することを目的とす
る。SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide a chlorinated vinyl chloride resin tube for sprinkler piping having both heat resistance and impact resistance.
【０００５】[0005]
【課題を解決するための手段】本発明は、塩素含有量６
０〜７０重量％、重合度６００〜１４００の塩素化塩化
ビニル樹脂からなるスプリンクラー配管用塩素化塩化ビ
ニル樹脂管である。以下に本発明を詳述する。According to the present invention, a chlorine content of 6 is provided.
It is a chlorinated vinyl chloride resin tube for sprinkler piping made of chlorinated vinyl chloride resin having a polymerization degree of 0 to 70% by weight and a polymerization degree of 600 to 1400. Hereinafter, the present invention will be described in detail.
【０００６】本発明のスプリンクラー配管用塩素化塩化
ビニル樹脂管を構成する塩素化塩化ビニル樹脂は、塩化
ビニル樹脂を塩素化することにより得られるものであ
る。上記塩化ビニル樹脂としては特に限定されず、例え
ば、塩化ビニル単独重合体；塩化ビニルモノマーと、該
塩化ビニルモノマーと共重合可能な不飽和結合を有する
重合性モノマーとの共重合体；重合体に塩化ビニルをグ
ラフト共重合させたグラフト共重合体等が挙げられる。
これらは単独で用いてもよく、２種以上を併用してもよ
い。[0006] The chlorinated vinyl chloride resin constituting the chlorinated vinyl chloride resin tube for sprinkler piping of the present invention is obtained by chlorinating the vinyl chloride resin. The vinyl chloride resin is not particularly limited and includes, for example, a vinyl chloride homopolymer; a copolymer of a vinyl chloride monomer and a polymerizable monomer having an unsaturated bond copolymerizable with the vinyl chloride monomer; Examples include a graft copolymer obtained by graft copolymerizing vinyl chloride.
These may be used alone or in combination of two or more.
【０００７】上記不飽和結合を有する重合性モノマーと
しては特に限定されず、例えば、エチレン、プロピレ
ン、ブチレン等のα−オレフィン類；酢酸ビニル等のビ
ニルエステル類；ブチルビニルエーテル等のビニルエー
テル類；メチル（メタ）アクリレート、ブチルアクリレ
ート等のアクリル酸エステル類；スチレン等の芳香族ビ
ニル類；塩化ビニリデン等のハロゲン化ビニル類；Ｎ−
フェニルマレイミド等のＮ−置換マレイミド類等が挙げ
られる。これらは単独で用いてもよく、２種以上を併用
してもよい。The polymerizable monomer having an unsaturated bond is not particularly restricted but includes, for example, α-olefins such as ethylene, propylene and butylene; vinyl esters such as vinyl acetate; vinyl ethers such as butyl vinyl ether; Acrylic acid esters such as meth) acrylate and butyl acrylate; aromatic vinyls such as styrene; vinyl halides such as vinylidene chloride;
N-substituted maleimides such as phenylmaleimide are exemplified. These may be used alone or in combination of two or more.
【０００８】上記重合体に塩化ビニルをグラフト共重合
させたグラフト共重合体としては特に限定されず、例え
ば、エチレン−酢酸ビニル共重合体、エチレン−酢酸ビ
ニル−一酸化炭素共重合体、エチレン−エチルアクリレ
ート共重合体、エチレン−プロピレン共重合体、アクリ
ロニトリル−ブタジエン共重合体、ポリウレタン、塩素
化ポリエチレン、塩素化ポリプロピレン等が挙げられ
る。これらは単独で用いてもよく、２種以上を併用して
もよい。The graft copolymer obtained by graft copolymerizing vinyl chloride with the above polymer is not particularly limited. Examples thereof include ethylene-vinyl acetate copolymer, ethylene-vinyl acetate-carbon monoxide copolymer, and ethylene-vinyl acetate copolymer. Ethyl acrylate copolymer, ethylene-propylene copolymer, acrylonitrile-butadiene copolymer, polyurethane, chlorinated polyethylene, chlorinated polypropylene and the like can be mentioned. These may be used alone or in combination of two or more.
【０００９】上記塩化ビニル樹脂を塩素化して塩素化塩
化ビニル樹脂とする方法としては特に限定されず、例え
ば、水懸濁法、溶液塩素化法等の従来公知の方法等を採
用することができるが、工業的には、水懸濁塩素化法が
好適に実施される。The method for chlorinating the above-mentioned vinyl chloride resin into a chlorinated vinyl chloride resin is not particularly limited, and for example, conventionally known methods such as a water suspension method and a solution chlorination method can be employed. However, industrially, the water suspension chlorination method is suitably performed.
【００１０】本発明においては、上記塩素化塩化ビニル
樹脂の塩素含有量は、６０〜７０重量％である。６０重
量％未満であると、充分な耐熱性が得られず、７０重量
％を超えると、成形が困難となり熱安定性が悪くなるの
で、上記範囲に限定される。In the present invention, the chlorinated vinyl chloride resin has a chlorine content of 60 to 70% by weight. If it is less than 60% by weight, sufficient heat resistance cannot be obtained, and if it exceeds 70% by weight, molding becomes difficult and thermal stability deteriorates, so that it is limited to the above range.
【００１１】上記塩素化塩化ビニル樹脂の塩素含有量を
所定の範囲に調整する方法としては、例えば、上記塩化
ビニル樹脂を塩素化する段階で調整してもよく、高塩素
化度の塩素化塩化ビニル樹脂と、低塩素化度の塩素化塩
化ビニル樹脂又は通常の塩化ビニル樹脂とをブレンドす
ることにより調整してもよい。As a method of adjusting the chlorine content of the chlorinated vinyl chloride resin to a predetermined range, for example, the chlorine content may be adjusted at the stage of chlorinating the vinyl chloride resin. It may be adjusted by blending a vinyl resin with a chlorinated vinyl chloride resin having a low chlorination degree or a normal vinyl chloride resin.
【００１２】本発明においては、上記塩素化塩化ビニル
樹脂の平均重合度は、６００〜１４００である。６００
未満であると、耐衝撃性等の物性が低下し、１４００を
超えると、成形性が悪くなるので、上記範囲に限定され
る。好ましくは、７００〜１０００である。In the present invention, the average degree of polymerization of the chlorinated vinyl chloride resin is from 600 to 1,400. 600
If it is less than 1, the physical properties such as impact resistance decrease, and if it exceeds 1,400, the moldability deteriorates, so it is limited to the above range. Preferably, it is 700-1000.
【００１３】本発明のスプリンクラー配管用塩素化塩化
ビニル樹脂管は、上記塩素化塩化ビニル樹脂と、衝撃改
質剤とからなるものであることが好ましい。本発明にお
いては、上記衝撃改質剤として、メチルメタクリレート
−ブタジエン−スチレン（ＭＢＳ）樹脂、アクリル樹
脂、又は、塩素化ポリエチレンが用いられる。また、こ
れらを２種以上併用してもよい。[0013] The chlorinated vinyl chloride resin tube for sprinkler piping of the present invention preferably comprises the above chlorinated vinyl chloride resin and an impact modifier. In the present invention, methyl methacrylate-butadiene-styrene (MBS) resin, acrylic resin, or chlorinated polyethylene is used as the impact modifier. Further, two or more of these may be used in combination.
【００１４】上記衝撃改質剤の添加量は、上記塩素化塩
化ビニル樹脂１００重量部に対して、２〜１２重量部が
好ましい。２重量部未満であると、充分な衝撃強度を発
現せず、１２重量部を超えると、成形性が悪化する。The addition amount of the impact modifier is preferably 2 to 12 parts by weight based on 100 parts by weight of the chlorinated vinyl chloride resin. If the amount is less than 2 parts by weight, sufficient impact strength will not be exhibited, and if it exceeds 12 parts by weight, moldability will deteriorate.
【００１５】本発明のスプリンクラー配管用塩素化塩化
ビニル樹脂管は、押出成形により得られるものであるこ
とが好ましい。上記押出成形は、例えば、単軸押出機、
二軸押出機等を用いることにより実施することができ
る。The chlorinated vinyl chloride resin tube for sprinkler piping of the present invention is preferably obtained by extrusion molding. The extrusion molding is, for example, a single screw extruder,
It can be carried out by using a twin screw extruder or the like.
【００１６】本発明のスプリンクラー配管用塩素化塩化
ビニル樹脂管は、成形時に必要に応じて、熱安定剤、安
定化助剤、滑剤、加工助剤、酸化防止剤、充填剤、顔料
等の配合剤を添加することができる。The chlorinated vinyl chloride resin pipe for a sprinkler pipe of the present invention may contain a heat stabilizer, a stabilizing aid, a lubricant, a processing aid, an antioxidant, a filler, a pigment, etc., as required during molding. Agents can be added.
【００１７】上記熱安定剤としては特に限定されず、例
えば、ジメチル錫メルカプト、ジブチル錫メルカプト、
ジオクチル錫メルカプト、ジブチル錫マレート、ジオク
チル錫マレート、ジブチル錫ラウレート等の有機錫化合
物等が挙げられる。これらは単独で用いてもよく、２種
以上を併用してもよい。The heat stabilizer is not particularly restricted but includes, for example, dimethyltin mercapto, dibutyltin mercapto,
Examples thereof include organic tin compounds such as dioctyltin mercapto, dibutyltin malate, dioctyltin malate, and dibutyltin laurate. These may be used alone or in combination of two or more.
【００１８】上記滑剤としては特に限定されず、例え
ば、モンタン酸ワックス、パラフィンワックス、ポリエ
チレンワックス、ステアリン酸、ステアリルアルコー
ル、ステアリン酸ブチル等が挙げられる。これらは単独
で用いてもよく、２種以上を併用してもよい。The lubricant is not particularly restricted but includes, for example, montanic acid wax, paraffin wax, polyethylene wax, stearic acid, stearyl alcohol, butyl stearate and the like. These may be used alone or in combination of two or more.
【００１９】上記加工助剤としては特に限定されず、例
えば、高重合度のアクリル系加工助剤等が挙げられる。
具体的には、例えば、ｎ−ブチルアクリレート−メチル
メタクリレート共重合体、２−エチルヘキシルアクリレ
ート−メチルメタクリレート−ブチルメタクリレート共
重合体等が挙げられる。これらは単独で用いてもよく、
２種以上を併用してもよい。The processing aid is not particularly restricted but includes, for example, acrylic processing aids having a high degree of polymerization.
Specifically, for example, an n-butyl acrylate-methyl methacrylate copolymer, a 2-ethylhexyl acrylate-methyl methacrylate-butyl methacrylate copolymer and the like can be mentioned. These may be used alone,
Two or more kinds may be used in combination.
【００２０】上記充填剤としては特に限定されず、例え
ば、炭酸カルシウム、タルク、酸化チタン等が挙げられ
る。上記顔料としては特に限定されず、例えば、アゾ
系、フタロシアニン系、スレン系等の有機顔料；酸化物
系、クロム酸モリブデン系、硫化物・セレン化物系、フ
ェロシアン化物系統の無機顔料等が挙げられる。The filler is not particularly restricted but includes, for example, calcium carbonate, talc, titanium oxide and the like. The pigment is not particularly limited, and includes, for example, azo-based, phthalocyanine-based, sulene-based organic pigments; oxide-based, molybdenum chromate-based, sulfide / selenide-based, ferrocyanide-based inorganic pigments, and the like. Can be
【００２１】[0021]
【実施例】以下に実施例を掲げて本発明を更に詳しく説
明するが、本発明はこれら実施例のみに限定されるもの
ではない。The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.
【００２２】実施例１ 下記の材料を用い、内容量１００リッターのヘンシェル
ミキサーで表１及び表２に示した配合組成物を調整し
た。塩素化塩化ビニル樹脂は原則として既存製品を使用
したが、高重合度品及び高塩素化度品等の製品の存在し
ない樹脂については試作により得た樹脂を使用した。Example 1 Using the following materials, the composition shown in Tables 1 and 2 was prepared using a Henschel mixer having a content of 100 liters. As the chlorinated vinyl chloride resin, an existing product was used in principle, but a resin obtained by trial production was used for a resin having no product such as a high polymerization degree product and a high chlorination degree product.
【００２３】樹脂 塩素化塩化ビニル樹脂（徳山積水工業社製） 平均重合度 ５４０、７５０、１５００（試作） 塩素化度（％） ５８、６６．５、７１．０（試作） Resin Chlorinated vinyl chloride resin (manufactured by Tokuyama Sekisui Industry Co., Ltd.) Average degree of polymerization 540, 750, 1500 (prototype) Chlorination degree (%) 58, 66.5, 71.0 (prototype)
【００２４】衝撃改質剤 ＭＢＳ樹脂（ＢＴＡ−７５１、呉羽化学工業社製） アクリル樹脂（ＦＭ、鐘淵化学工業社製） 塩素化ポリエチレン（エスミックＣＥ、徳山積水工業社
製） Impact modifier MBS resin (BTA-751, manufactured by Kureha Chemical Industry Co., Ltd.) Acrylic resin (FM, manufactured by Kanegabuchi Chemical Industry Co., Ltd.) Chlorinated polyethylene (ESMIC CE, manufactured by Tokuyama Sekisui Industry Co., Ltd.)
【００２５】安定剤 有機錫安定剤（ＳＮＴ−４６１Ｋ、三共有機社製）滑剤 ポリエチレン系滑剤（Ｈｉｗａｘ２２０ＭＰ、三井石油
化学社製） エステル系滑剤（ＳＬ−０２、理研ビタミン社製）加工助剤 アクリル系加工助剤（メタブレンＰ−５０１Ａ、三菱レ
ーヨン社製） Stabilizer Organotin stabilizer (SNT-461K, manufactured by Sankyoki Co., Ltd.) Lubricant Polyethylene lubricant (Hiwax220MP, manufactured by Mitsui Petrochemical Co., Ltd.) Ester lubricant (SL-02, manufactured by Riken Vitamin Co., Ltd.) Processing aid Acrylic Processing aid (METABLEN P-501A, manufactured by Mitsubishi Rayon Co., Ltd.)
【００２６】[0026]
【表１】 [Table 1]
【００２７】[0027]
【表２】 [Table 2]
【００２８】上記実施例及び比較例で得られた樹脂組成
物を、５０ｍｍ二軸押出機（ＳＬＭ−５０、長田製作所
社製）に供給し、直径２０ｍｍの管を押出成形した。更
に下記の基本性能評価を行い、結果を表３及び表４に示
した。評価の基準は消化設備用合成樹脂管の性能評定に
従った。The resin compositions obtained in the above Examples and Comparative Examples were supplied to a 50 mm twin screw extruder (SLM-50, manufactured by Nagata Seisakusho) to extrude a tube having a diameter of 20 mm. Further, the following basic performance evaluation was performed, and the results are shown in Tables 3 and 4. Evaluation criteria were in accordance with the performance evaluation of synthetic resin tubes for digestion facilities.
【００２９】（１）軟化温度 ＪＩＳ Ｋ ７２０６に準拠して、ビカット軟化温度を
測定した。 （２）耐衝撃性 ＪＩＳ Ｋ ６７４２に準拠して、０℃における耐衝撃
性を３ｋｇ錘を用いた落錘衝撃試験で測定した。 （３）成形性 押出成形時の成形性については、成形上問題のないもの
を○、押出負荷高による成形困難なものを×とした。(1) Softening Temperature Vicat softening temperature was measured in accordance with JIS K 7206. (2) Impact Resistance Impact resistance at 0 ° C. was measured by a falling weight impact test using a 3 kg weight in accordance with JIS K 6742. (3) Moldability Regarding the moldability at the time of extrusion molding, ○ indicates that there is no problem in molding, and X indicates that molding is difficult due to high extrusion load.
【００３０】（４）スプリンクラー配管としての評価 上記塩素化塩化ビニル管をスプリンクラー配管として疑
似配管し、以下の試験を実施し、管の破裂、亀裂等の異
常の有無を目視により評価した。 １）繰り返し圧力試験 ３．５ｋｇｆ／ｃｍ2 から３５ｋｇｆ／ｃｍ2 の圧力変
動を毎秒１回の割合で１００回加えた後に、１５ｋｇｆ
／ｃｍ2 の水圧を３分間加える。 ２）破壊試験 ４０ｋｇｆ／ｃｍ2 の水圧を１分間加える。 （５）外観 得られた管の外観を目視観察し、外観の良好なものを
○、若干スジ、波打ちのあるものを△、外観不良のもの
を×とした。(4) Evaluation as a sprinkler pipe The above chlorinated vinyl chloride pipe was simulated as a sprinkler pipe, and the following test was carried out, and the presence or absence of an abnormality such as rupture or crack of the pipe was visually evaluated. 1) Repetitive pressure test A pressure fluctuation of 3.5 kgf / cm 2 to 35 kgf / cm 2 was applied 100 times per second at a rate of 15 kgf / cm 2.
/ Cm 2 of water pressure for 3 minutes. 2) Breaking test A water pressure of 40 kgf / cm 2 is applied for 1 minute. (5) Appearance The appearance of the obtained tube was visually observed, and those with good appearance were rated as ○, those with slight streaking and wavy were rated as Δ, and those with poor appearance were rated as ×.
【００３１】[0031]
【表３】 [Table 3]
【００３２】[0032]
【表４】 [Table 4]
【００３３】[0033]
【発明の効果】本発明のスプリンクラー配管用塩素化塩
化ビニル樹脂管は、上述の構成からなるものであるの
で、耐衝撃性、耐熱性に優れたものであり、また、成形
性に優れているので、通常の一般的な方法で容易に成形
することができるものである。The chlorinated vinyl chloride resin tube for sprinkler piping according to the present invention has the above-described structure, and therefore has excellent impact resistance and heat resistance, and also has excellent moldability. Therefore, it can be easily formed by an ordinary general method.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｂ２９Ｌ 23:00 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI B29L 23:00
Claims (3)
００〜１４００の塩素化塩化ビニル樹脂からなることを
特徴とするスプリンクラー配管用塩素化塩化ビニル樹脂
管。1. A chlorine content of 60 to 70% by weight and a degree of polymerization of 6
A chlorinated vinyl chloride resin tube for sprinkler piping, comprising a chlorinated vinyl chloride resin of from 0 to 1400.
００〜１４００の塩素化塩化ビニル樹脂１００重量部
と、メチルメタクリレート−ブタジエン−スチレン樹
脂、アクリル樹脂、及び、塩素化ポリエチレンからなる
群より選択される少なくとも１種の衝撃改質剤２〜１２
重量部と、からなることを特徴とするスプリンクラー配
管用塩素化塩化ビニル樹脂管。2. A chlorine content of 60 to 70% by weight and a degree of polymerization of 6
100 to 1100 parts by weight of a chlorinated vinyl chloride resin of at least one, and at least one impact modifier selected from the group consisting of methyl methacrylate-butadiene-styrene resin, acrylic resin, and chlorinated polyethylene.
A chlorinated vinyl chloride resin tube for sprinkler piping, comprising: a weight part.
項１又は２記載のスプリンクラー配管用塩素化塩化ビニ
ル樹脂管。3. The chlorinated vinyl chloride resin pipe for a sprinkler pipe according to claim 1, which is obtained by extrusion molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9109000A JPH10296821A (en) | 1997-04-25 | 1997-04-25 | Chlorinated vinyl chloride resin pipe for sprinkler piping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9109000A JPH10296821A (en) | 1997-04-25 | 1997-04-25 | Chlorinated vinyl chloride resin pipe for sprinkler piping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10296821A true JPH10296821A (en) | 1998-11-10 |
Family
ID=14499039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9109000A Pending JPH10296821A (en) | 1997-04-25 | 1997-04-25 | Chlorinated vinyl chloride resin pipe for sprinkler piping |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10296821A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105694316A (en) * | 2016-04-14 | 2016-06-22 | 叶青 | Chlorinated polyvinyl chloride water supply pipe |
| CN105860386A (en) * | 2016-04-11 | 2016-08-17 | 叶青 | Formula of CPVC gas pipe |
| WO2019065742A1 (en) * | 2017-09-27 | 2019-04-04 | 積水化学工業株式会社 | Resin composition for molding |
| US11692091B2 (en) | 2017-09-27 | 2023-07-04 | Sekisui Chemical Co., Ltd. | Resin composition for injection molding |
-
1997
- 1997-04-25 JP JP9109000A patent/JPH10296821A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105860386A (en) * | 2016-04-11 | 2016-08-17 | 叶青 | Formula of CPVC gas pipe |
| CN105694316A (en) * | 2016-04-14 | 2016-06-22 | 叶青 | Chlorinated polyvinyl chloride water supply pipe |
| WO2019065742A1 (en) * | 2017-09-27 | 2019-04-04 | 積水化学工業株式会社 | Resin composition for molding |
| JPWO2019065742A1 (en) * | 2017-09-27 | 2019-11-14 | 積水化学工業株式会社 | Molding resin composition |
| CN110621737A (en) * | 2017-09-27 | 2019-12-27 | 积水化学工业株式会社 | Resin composition for molding |
| KR20200055685A (en) * | 2017-09-27 | 2020-05-21 | 세키스이가가쿠 고교가부시키가이샤 | Molding resin composition |
| US11692091B2 (en) | 2017-09-27 | 2023-07-04 | Sekisui Chemical Co., Ltd. | Resin composition for injection molding |
| US11866574B2 (en) | 2017-09-27 | 2024-01-09 | Sekisui Chemical Co., Ltd. | Resin composition for molding |
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