JPH0748413A - Production of chlorinated vinyl chloride resin - Google Patents
Production of chlorinated vinyl chloride resinInfo
- Publication number
- JPH0748413A JPH0748413A JP19337493A JP19337493A JPH0748413A JP H0748413 A JPH0748413 A JP H0748413A JP 19337493 A JP19337493 A JP 19337493A JP 19337493 A JP19337493 A JP 19337493A JP H0748413 A JPH0748413 A JP H0748413A
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- JP
- Japan
- Prior art keywords
- vinyl chloride
- chloride resin
- weight
- chlorinated
- polymerization
- 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.)
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- Polymerisation Methods In General (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、塩素化塩化ビニル系樹
脂の製造方法に関する。FIELD OF THE INVENTION The present invention relates to a method for producing a chlorinated vinyl chloride resin.
【０００２】[0002]
【従来の技術】塩素化塩化ビニル樹脂（以下「ＣＰＶ
Ｃ」という）は、塩化ビニル樹脂（以下「ＰＶＣ」とい
う）を塩素化して得られる（特開昭６３−１２２７１５
号公報）。2. Description of the Related Art Chlorinated vinyl chloride resin (hereinafter "CPV"
C) is obtained by chlorinating a vinyl chloride resin (hereinafter referred to as "PVC") (JP-A-63-122715).
Issue).
【０００３】ＣＰＶＣは、ＰＶＣの長所といわれる優れ
た特性をそのまま保有し、かつＰＶＣの欠点といわれる
性質が改良されているので、有用な樹脂として多方面の
用途に使用されている。即ち、ＣＰＶＣは、ＰＶＣの長
所といわれる優れた耐候性、耐薬品性などを保有し、さ
らにＰＶＣよりも熱変形温度が２０〜４０℃も高いた
め、ＰＶＣの使用可能な上限温度が６０〜７０℃付近で
あるのに対して、ＣＰＶＣは１００℃近くでも使用可能
であり、耐熱パイプ、耐熱継手、耐熱バルブなどに好適
に使用されている。[0003] CPVC is used as a useful resin in various fields because it retains the excellent characteristics of PVC as it is and has improved properties of PVC called defects. That is, CPVC has excellent weather resistance, chemical resistance, etc., which are said to be advantages of PVC, and since the heat distortion temperature is 20 to 40 ° C. higher than that of PVC, the upper limit temperature at which PVC can be used is 60 to 70. Although the temperature is in the vicinity of 0 ° C, CPVC can be used even in the vicinity of 100 ° C, and is suitably used for heat resistant pipes, heat resistant joints, heat resistant valves and the like.
【０００４】しかしながら、上述したように、ＣＰＶＣ
はＰＶＣより熱変形温度が高いため、ＰＶＣより高温で
加熱溶融しなければ成形加工することができない。とこ
ろが、ＣＰＶＣは高温での加熱により分解し易く、分解
によって成形体の着色や性能低下が起こる。従って、Ｃ
ＰＶＣは加熱によって十分にゲル化させることが困難で
あり、得られた成形体は十分にゲル化されていないの
で、ＰＶＣに比べて衝撃強度が劣るという問題点があっ
た。そこで、ＣＰＶＣが低い温度で溶融するような、ゲ
ル化特性の改良が要望されている。However, as mentioned above, CPVC
Since PVC has a higher heat distortion temperature than PVC, it cannot be molded unless it is heated and melted at a temperature higher than PVC. However, CPVC is easily decomposed by heating at a high temperature, and the decomposition causes coloring of the molded body and deterioration of performance. Therefore, C
Since it is difficult to sufficiently gelate PVC by heating and the obtained molded body is not sufficiently gelated, there is a problem that impact strength is inferior to PVC. Therefore, there is a demand for improvement in gelation characteristics such that CPVC melts at a low temperature.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、上記問題点
に鑑み、その目的は、従来の塩化ビニル樹脂が持ってい
る優れた性を保有すると共に、ゲル化特性が大幅に改良
され、低温で十分なゲル化が可能な塩素化塩化ビニル系
樹脂の製造方法を提供することにある。SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention has the object of retaining the excellent properties of conventional vinyl chloride resins, significantly improving the gelling property, and improving the low temperature. To provide a method for producing a chlorinated vinyl chloride resin capable of sufficiently gelling.
【０００６】[0006]
【課題を解決するための手段】本発明の塩素化塩化ビニ
ル系樹脂の製造方法は、塩化ビニル系単量体を水性媒体
中で、高級脂肪酸の存在下で重合して塩化ビニル系樹脂
を得た後、該塩化ビニル系樹脂を塩素化する方法であ
る。The method for producing a chlorinated vinyl chloride resin according to the present invention is to obtain a vinyl chloride resin by polymerizing a vinyl chloride monomer in an aqueous medium in the presence of a higher fatty acid. And then chlorinating the vinyl chloride resin.
【０００７】上記塩化ビニル系単量体とは、塩化ビニル
単量体単独；塩化ビニル単量体と共重合可能な他の単量
体と塩化ビニル単量体との混合物であって、混合物は塩
化ビニル単量体を９０重量％以上含有するものが好まし
い。ここで、塩化ビニルと共重合可能な他の単量体とし
ては、エチレン、プロピレン、塩化アリル、アクリル
酸、メタクリル酸、アクリル酸エステル、メタクリル酸
エステル、酢酸ビニル、無水マレイン酸、アクリロニト
リル等公知の単量体が挙げられ、これらは単独又は２種
以上混合して使用される。The above vinyl chloride-based monomer is a vinyl chloride monomer alone; a mixture of another monomer copolymerizable with the vinyl chloride monomer and the vinyl chloride monomer, and the mixture is Those containing 90% by weight or more of a vinyl chloride monomer are preferable. Here, as the other monomer copolymerizable with vinyl chloride, known are ethylene, propylene, allyl chloride, acrylic acid, methacrylic acid, acrylic acid ester, methacrylic acid ester, vinyl acetate, maleic anhydride, acrylonitrile, etc. Examples thereof include monomers, which may be used alone or in combination of two or more.
【０００８】上記高級脂肪酸の炭素数は、小さくなって
も大きくなっても、異常重合を起こしてＰＶＣ粒子が得
られなくなるので、１２〜２２に限定され、好ましくは
１５〜２０である。The carbon number of the higher fatty acid is limited to 12 to 22, and preferably 15 to 20, regardless of whether it is small or large, because abnormal polymerization occurs and PVC particles cannot be obtained.
【０００９】このような高級脂肪酸としては、ラウリン
酸、パルミチン酸、ステアリン酸等の脂肪族飽和カルボ
ン酸；マレイン酸、オレイン酸等の脂肪族不飽和カルボ
ン酸等が挙げられる。Examples of such higher fatty acids include aliphatic saturated carboxylic acids such as lauric acid, palmitic acid and stearic acid; and aliphatic unsaturated carboxylic acids such as maleic acid and oleic acid.
【００１０】上記高級脂肪酸の使用量は、少なくなると
ＣＰＶＣのゲル化特性を改良する効果が小さく、多くな
ると得られるＣＰＶＣの熱安定性が悪くなるので、塩化
ビニル系単量体１００重量部に対して０．１〜１重量部
であり、好ましくは０．２〜０．７重量部である。When the amount of the higher fatty acid used is small, the effect of improving the gelling property of CPVC is small, and when it is large, the thermal stability of the obtained CPVC is poor, so that 100 parts by weight of the vinyl chloride monomer is used. 0.1 to 1 part by weight, preferably 0.2 to 0.7 part by weight.
【００１１】上記水性媒体としては、脱イオン水に懸濁
剤を加えたものが用いられる。懸濁剤としては、水溶性
セルロースエーテル類、部分ケン化ポリビニルアルコー
ル、アクリル酸重合体、ゼラチン等が好適に用いられ
る。As the above-mentioned aqueous medium, deionized water containing a suspending agent is used. As the suspending agent, water-soluble cellulose ethers, partially saponified polyvinyl alcohol, acrylic acid polymers, gelatin and the like are preferably used.
【００１２】上記水溶性セルロースエーテル類として
は、例えば、メチルセルロース、エチルセルロース、ヒ
ドロキシエチルセルロース、ヒドロキシプロピルメチル
セルロース等が挙げられ、これらは単独で用いられても
よく、２種以上が混合して用いられてもよい。Examples of the above water-soluble cellulose ethers include methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, etc. These may be used alone or in combination of two or more kinds. Good.
【００１３】上記水性媒体には、必要に応じて他の助
剤、例えば、重合調整剤、連鎖移動剤、ｐＨ調整剤、帯
電防止剤、架橋剤、安定剤、充填剤、酸化防止剤等が添
加されてもよい。If necessary, other auxiliary agents such as a polymerization modifier, a chain transfer agent, a pH adjuster, an antistatic agent, a cross-linking agent, a stabilizer, a filler, an antioxidant, etc. may be added to the above aqueous medium. It may be added.
【００１４】上記塩化ビニル系単量体の重合に用いられ
る触媒としては、従来より公知の油溶性又は水溶性のい
ずれのものも使用可能である。As the catalyst used for the polymerization of the vinyl chloride-based monomer, any conventionally known oil-soluble or water-soluble catalyst can be used.
【００１５】油溶性の触媒としては、パーカーボネート
化合物、パーエステル化合物、過酸化物、アゾ化合物等
が好適に使用される。As the oil-soluble catalyst, percarbonate compounds, perester compounds, peroxides, azo compounds and the like are preferably used.
【００１６】上記パーカーボネート化合物としては、ジ
−２−エチルヘキシルパーオキシジカーボネート；パー
エステル化合物としては、ｔ−ブチルパーオキシネオデ
カーボネート；過酸化物としては、アセチルシクロヘキ
シルスルホニルパーオキシド；アゾ化合物としては、ア
ゾビス−２，４−ジメチルバレロニトリルが、それぞれ
挙げられる。The above-mentioned percarbonate compound is di-2-ethylhexyl peroxydicarbonate; the perester compound is t-butyl peroxyneodecarbonate; the peroxide is acetylcyclohexylsulfonyl peroxide; the azo compound is Examples include azobis-2,4-dimethylvaleronitrile.
【００１７】上記水溶性の触媒としては、過硫酸カリウ
ム、過硫酸アンモニウム、過酸化水素、キュメンハイド
ロパーオキシド等が挙げられる。上記水溶性の触媒は、
油溶性の触媒と組み合わせて用いてもよい。Examples of the water-soluble catalyst include potassium persulfate, ammonium persulfate, hydrogen peroxide and cumene hydroperoxide. The water-soluble catalyst is
It may be used in combination with an oil-soluble catalyst.
【００１８】上記塩化ビニル単量体を水性媒体中、高級
脂肪酸の存在下で重合して塩化ビニル系重合体を従来の
方法に従って取り出した後、この重合体を塩素化する。
塩素化は、懸濁状態、溶液状態又は固塊状態のいずれの
状態でも行うことができる。The vinyl chloride monomer is polymerized in an aqueous medium in the presence of a higher fatty acid to take out a vinyl chloride polymer according to a conventional method, and then the polymer is chlorinated.
Chlorination can be carried out in any of a suspended state, a solution state and a solid state.
【００１９】懸濁状態で塩素化を行う方法としては、水
性懸濁状態の塩化ビニル系重合体に塩素を導入して塩素
化反応を行う方法；水性懸濁状態の塩化ビニル系重合体
を一旦水性媒体から分離した後、該重合体を再び別の水
中に分散して、これに塩素を導入して塩素化反応を行う
方法が挙げられる。この際、紫外線を照射することによ
り塩素化を促進させてもよい。As a method of chlorinating in a suspension state, chlorine is introduced into an aqueous suspension vinyl chloride polymer to carry out a chlorination reaction; After separating from the aqueous medium, the polymer is dispersed again in another water, and chlorine is introduced into this to carry out a chlorination reaction. At this time, chlorination may be promoted by irradiating with ultraviolet rays.
【００２０】また、上記塩素化反応において、水中に少
量のアセトン、メチルエチルケトン等のケトン類を加え
てもよく、さらに必要に応じて、塩酸；トリクロロエチ
レン、四塩化炭素等の塩素系溶媒を加えてもよい。Further, in the above chlorination reaction, a small amount of ketones such as acetone and methyl ethyl ketone may be added to water, and if necessary, a chlorine-based solvent such as hydrochloric acid; trichlorethylene and carbon tetrachloride may be added. Good.
【００２１】本発明において、塩素化反応は、得られる
ＣＰＶＣの塩素含有量が６０〜７０重量％となるように
行うのが好ましい。In the present invention, the chlorination reaction is preferably carried out so that the chlorine content of the obtained CPVC is 60 to 70% by weight.
【００２２】[0022]
【実施例】次に、本発明の実施例を説明する。 （実施例１）塩化ビニル重合体の製造 内容積６６０リットルの重合反応容器に、脱イオン水１
２０重量部、懸濁剤としてケン化度７２モル％の部分ケ
ン化ポリビニルアルコール０．０４重量部及びヒドロキ
シプロピルメチルセルロース０．０１重量部ならびに高
級脂肪酸として炭素数１２のラウリン酸０．５重量部を
投入し、重合反応容器内の酸素を減圧除去した後、さら
に、塩化ビニル単量体１００重量部、重合触媒としてジ
−２−エチルヘキシルパーオキシジカーボネート０．０
８重量部を投入した。次いで、重合反応容器を５８℃の
温度に保持して重合を行い、重合反応容器の内圧が７．
５ｋｇ／ｃｍ2 に達したとき、未反応の塩化ビニル単量
体を回収し、水相から重合体を濾別して塩化ビニル重合
体を得た。この塩化ビニル重合体の平均重合度は１００
０であった。EXAMPLES Next, examples of the present invention will be described. (Example 1) Production of vinyl chloride polymer In a polymerization reaction vessel having an internal volume of 660 liters, deionized water 1 was added.
20 parts by weight, 0.04 part by weight of partially saponified polyvinyl alcohol having a saponification degree of 72 mol% and 0.01 part by weight of hydroxypropylmethylcellulose as a suspending agent, and 0.5 part by weight of lauric acid having 12 carbon atoms as a higher fatty acid. After being charged and oxygen in the polymerization reaction vessel was removed under reduced pressure, 100 parts by weight of vinyl chloride monomer was further added, and di-2-ethylhexyl peroxydicarbonate 0.0 was added as a polymerization catalyst.
8 parts by weight was added. Then, the polymerization reaction container was maintained at a temperature of 58 ° C. to carry out polymerization, and the internal pressure of the polymerization reaction container was adjusted to 7.
When the amount reached 5 kg / cm 2 , unreacted vinyl chloride monomer was recovered, and the polymer was filtered off from the aqueous phase to obtain a vinyl chloride polymer. The average degree of polymerization of this vinyl chloride polymer is 100.
It was 0.
【００２３】塩素化塩化ビニル樹脂の製造 内容積３００リットルのグラスライニング製反応槽に、
脱イオン水５００重量部と上記塩化ビニル重合体１００
重量部を投入し、攪拌して塩化ビニル重合体を水中に分
散させた後、反応槽を加熱して槽内温度を７０℃に保っ
た。次いで、反応槽に窒素ガスを吹き込み槽内を窒素ガ
スで置換した後、塩素ガスを吹き込み、水銀ランプで槽
内に紫外線を照射しながら、塩化ビニル重合体の塩素化
を行った。槽内の塩酸濃度を測定して塩素化反応を進行
状況を検討し、得られた塩素化塩化ビニル樹脂の塩素含
有量が約６６．５重量％に達した時点で塩素ガスの供給
を停止し、塩素化反応を終了した。その後、槽内に窒素
ガスを吹き込みながら未反応塩素を除去し、得られた分
散物を水酸化ナトリウムで中和し、水で洗浄して脱水し
た後、乾燥して粉状塩素化塩化ビニル樹脂を得た。 Production of chlorinated vinyl chloride resin In a glass-lined reaction tank having an internal volume of 300 liters,
500 parts by weight of deionized water and 100 parts of the above vinyl chloride polymer
After adding a part by weight and stirring to disperse the vinyl chloride polymer in water, the reaction tank was heated to maintain the temperature in the tank at 70 ° C. Then, nitrogen gas was blown into the reaction tank to replace the inside of the tank with nitrogen gas, and then chlorine gas was blown into the tank, and the inside of the tank was irradiated with ultraviolet rays to chlorinate the vinyl chloride polymer. The progress of the chlorination reaction was examined by measuring the concentration of hydrochloric acid in the tank, and when the chlorine content of the obtained chlorinated vinyl chloride resin reached about 66.5% by weight, the supply of chlorine gas was stopped. The chlorination reaction was completed. Then, unreacted chlorine was removed while blowing nitrogen gas into the tank, the obtained dispersion was neutralized with sodium hydroxide, washed with water, dehydrated, and then dried to obtain powdered chlorinated vinyl chloride resin. Got
【００２４】（実施例２）高級脂肪酸として炭素数１８
のステアリン酸を使用したこと以外は、実施例１と同様
にして、平均重合度１０００の塩化ビニル樹脂を得た
後、この塩化ビニル樹脂を実施例１と同様にして塩素化
し、塩素含有率６６．５重量％の塩素化塩化ビニル樹脂
を得た。(Example 2) C18 as higher fatty acid
After obtaining a vinyl chloride resin having an average degree of polymerization of 1000 in the same manner as in Example 1 except that the stearic acid was used, the vinyl chloride resin was chlorinated in the same manner as in Example 1 to give a chlorine content of 66. A chlorinated vinyl chloride resin of 0.5% by weight was obtained.
【００２５】（実施例３）高級脂肪酸として炭素数２２
のベヘニン酸を使用したこと以外は、実施例１と同様に
して、平均重合度１０００の塩化ビニル樹脂を得た後、
この塩化ビニル樹脂を実施例１と同様にして塩素化し、
塩素含有率６６．５重量％の塩素化塩化ビニル樹脂を得
た。(Example 3) Carbon number of 22 as higher fatty acid
After obtaining a vinyl chloride resin having an average polymerization degree of 1000 in the same manner as in Example 1 except that the behenic acid of
This vinyl chloride resin was chlorinated in the same manner as in Example 1,
A chlorinated vinyl chloride resin having a chlorine content of 66.5% by weight was obtained.
【００２６】（実施例４）高級脂肪酸としてステアリン
酸０．１重量部を使用したこと以外は、実施例１と同様
にして、平均重合度１０００の塩化ビニル樹脂を得た
後、この塩化ビニル樹脂を実施例１と同様にして塩素化
し、塩素含有率６６．５重量％の塩素化塩化ビニル樹脂
を得た。Example 4 A vinyl chloride resin having an average degree of polymerization of 1000 was obtained in the same manner as in Example 1 except that 0.1 part by weight of stearic acid was used as the higher fatty acid. Was chlorinated in the same manner as in Example 1 to obtain a chlorinated vinyl chloride resin having a chlorine content of 66.5% by weight.
【００２７】（実施例５）高級脂肪酸としてステアリン
酸１重量部を使用したこと以外は、実施例１と同様にし
て、平均重合度１０００の塩化ビニル樹脂を得た後、こ
の塩化ビニル樹脂を実施例１と同様にして塩素化し、塩
素含有率６６．５重量％の塩素化塩化ビニル樹脂を得
た。Example 5 A vinyl chloride resin having an average degree of polymerization of 1000 was obtained in the same manner as in Example 1 except that 1 part by weight of stearic acid was used as the higher fatty acid. Chlorination was carried out in the same manner as in Example 1 to obtain a chlorinated vinyl chloride resin having a chlorine content of 66.5% by weight.
【００２８】（比較例１）高級脂肪酸を全く使用しなか
ったこと以外は、実施例１と同様にして、平均重合度１
０００の塩化ビニル樹脂を得た後、この塩化ビニル樹脂
を実施例１と同様にして塩素化し、塩素含有率６６．５
重量％の塩素化塩化ビニル樹脂を得た。Comparative Example 1 An average degree of polymerization of 1 was obtained in the same manner as in Example 1 except that no higher fatty acid was used.
After obtaining 000 vinyl chloride resin, this vinyl chloride resin was chlorinated in the same manner as in Example 1 to give a chlorine content of 66.5.
A weight percent chlorinated vinyl chloride resin was obtained.
【００２９】（比較例２）高級脂肪酸としてステアリン
酸０．０５重量部を使用したこと以外は、実施例１と同
様にして、平均重合度１０００の塩化ビニル樹脂を得た
後、この塩化ビニル樹脂を実施例１と同様にして塩素化
し、塩素含有率６６．５重量％の塩素化塩化ビニル樹脂
を得た。Comparative Example 2 A vinyl chloride resin having an average degree of polymerization of 1000 was obtained in the same manner as in Example 1 except that 0.05 part by weight of stearic acid was used as the higher fatty acid. Was chlorinated in the same manner as in Example 1 to obtain a chlorinated vinyl chloride resin having a chlorine content of 66.5% by weight.
【００３０】（比較例３）高級脂肪酸としてステアリン
酸１．５重量部を使用したこと以外は、実施例１と同様
にして、平均重合度１０００の塩化ビニル樹脂を得た
後、この塩化ビニル樹脂を実施例１と同様にして塩素化
し、塩素含有率６６．５重量％の塩素化塩化ビニル樹脂
を得た。Comparative Example 3 A vinyl chloride resin having an average degree of polymerization of 1000 was obtained in the same manner as in Example 1 except that 1.5 parts by weight of stearic acid was used as the higher fatty acid. Was chlorinated in the same manner as in Example 1 to obtain a chlorinated vinyl chloride resin having a chlorine content of 66.5% by weight.
【００３１】（比較例４）高級脂肪酸として炭素数１０
のヘプタン酸０．５重量部を使用したこと以外は、実施
例１と同様にして、平均重合度１０００の塩化ビニル樹
脂を得ようとしたが、異常重合により得ることができな
かった。(Comparative Example 4) C10 as higher fatty acid
A vinyl chloride resin having an average degree of polymerization of 1000 was tried to be obtained in the same manner as in Example 1 except that 0.5 part by weight of heptanoic acid was used, but it could not be obtained by abnormal polymerization.
【００３２】（比較例５）高級脂肪酸として炭素数２６
のセロチン酸０．５重量部を使用したこと以外は、実施
例１と同様にして、平均重合度１０００の塩化ビニル樹
脂を得ようとしたが、異常重合により得ることができな
かった。(Comparative Example 5) C26 as higher fatty acid
An attempt was made to obtain a vinyl chloride resin having an average degree of polymerization of 1000 in the same manner as in Example 1 except that 0.5 part by weight of cerotic acid was used, but it could not be obtained by abnormal polymerization.
【００３３】塩素化塩化ビニル樹脂の物性評価 上記実施例及び比較例で得られた塩素化塩化ビニル樹脂
１００重量部、三塩基性硫酸鉛３重量部、二塩基性ステ
アリン酸鉛１重量部及びＭＢＳ樹脂１０重量部からなる
配合物を２本の８インチロールに供給し、１９０℃で３
分間混練して厚さ０．５ｍｍのシートを得た。このシー
トを重ね合わせ、１９５℃の温度、１５０ｋｇ／ｃｍ2
の圧力で８分間プレス成形して、厚さ３ｍｍと６．４ｍ
ｍのプレス板を得た。 Evaluation of Physical Properties of Chlorinated Vinyl Chloride Resin 100 parts by weight of the chlorinated vinyl chloride resin obtained in the above Examples and Comparative Examples, 3 parts by weight of tribasic lead sulfate, 1 part by weight of dibasic lead stearate and MBS. The compound consisting of 10 parts by weight of resin was fed to two 8-inch rolls, and the mixture was heated at 190 ° C. for 3 hours.
Kneading was carried out for a minute to obtain a sheet having a thickness of 0.5 mm. This sheet is piled up and the temperature is 195 ° C. and 150 kg / cm 2
Press molding with pressure of 8 minutes, thickness 3mm and 6.4m
m press plate was obtained.
【００３４】上記配合物及びプレス板につき下記の物性
評価を行い、その結果を表１に示した。 （１）熱安定性 上記配合物を表面温度２０５℃の８インチロールで混練
し、混練物をロールに巻き付けた。巻き付け開始時から
３０秒毎に巻き付いたシートを切り返しながら、３分毎
に少量のシートを切り出して、シートの着色度を比較
し、黒褐色に変わる時間で熱安定性を示した。The following physical properties were evaluated for the above-mentioned compound and pressed plate, and the results are shown in Table 1. (1) Thermal Stability The above composition was kneaded with an 8-inch roll having a surface temperature of 205 ° C., and the kneaded product was wound around the roll. While turning back the wound sheet every 30 seconds from the start of winding, a small amount of the sheet was cut out every 3 minutes to compare the coloring degree of the sheet, and the heat stability was shown at the time when it turned blackish brown.
【００３５】（２）ゲル化温度 プラストミル（Ｈａａｋ社製「Ｒ−９０」）を使用し
て、上記配合物５５ｇを回転数４０ｒｐｍ、試験温度を
１５０℃から毎分５℃の昇温スピードで昇温しながら混
練し、混練トルクがピークになる時の温度をゲル化温度
とした。(2) Gelation temperature Using a plastomill ("R-90" manufactured by Haak Co.), 55 g of the above compound was heated at a rotation speed of 40 rpm and a test temperature was raised from 150 ° C to 5 ° C per minute. The mixture was kneaded while warming, and the temperature at which the kneading torque reached its peak was taken as the gelling temperature.
【００３６】（３）熱変形温度 厚さ６．４ｍｍのプレス板を試験片として、ＡＳＴＭ
Ｄ６４８に準拠し、負荷荷重１８．６ｋｇ／ｃｍ2 で熱
変形温度を測定した。(3) Heat Deformation Temperature Using a press plate having a thickness of 6.4 mm as a test piece, ASTM
According to D648, the heat distortion temperature was measured under a load of 18.6 kg / cm 2 .
【００３７】（４）シャルピー衝撃強度 厚さ３ｍｍのプレス板を試験片として、ＪＩＳ Ｋ７１
１１に準拠し、２３℃の温度下でシャルピー衝撃強度を
測定した。(4) Charpy impact strength Using a press plate having a thickness of 3 mm as a test piece, JIS K71
According to 11, the Charpy impact strength was measured at a temperature of 23 ° C.
【００３８】[0038]
【表１】 [Table 1]
【００３９】[0039]
【発明の効果】本発明の塩素化塩化ビニル樹脂の製造方
法は、上述の通りであり、難燃性、耐候性、耐薬品性な
どの塩化ビニル樹脂がもつ優れた特性をそのまま保有す
る共に、低温で十分にゲル化させることができるので、
加熱溶融による着色や物性低下がなく、品質の優れた成
形体を提供することができる。The method for producing a chlorinated vinyl chloride resin of the present invention is as described above, and retains the excellent characteristics of the vinyl chloride resin such as flame retardancy, weather resistance and chemical resistance as they are. Since it can be sufficiently gelled at low temperature,
It is possible to provide a molded product having excellent quality without coloring or deterioration of physical properties due to heating and melting.
Claims (1)
体中で、炭素数１２〜２２の高級脂肪酸０．１〜１重量
部の存在下で重合して塩化ビニル系樹脂を得た後、該塩
化ビニル系樹脂を塩素化することを特徴とする塩素化塩
化ビニル系樹脂の製造方法。1. A vinyl chloride resin is obtained by polymerizing 100 parts by weight of a vinyl chloride monomer in an aqueous medium in the presence of 0.1 to 1 part by weight of a higher fatty acid having 12 to 22 carbon atoms. A method for producing a chlorinated vinyl chloride resin, which comprises chlorinating the vinyl chloride resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19337493A JP2818101B2 (en) | 1993-08-04 | 1993-08-04 | Method for producing chlorinated vinyl chloride resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19337493A JP2818101B2 (en) | 1993-08-04 | 1993-08-04 | Method for producing chlorinated vinyl chloride resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0748413A true JPH0748413A (en) | 1995-02-21 |
| JP2818101B2 JP2818101B2 (en) | 1998-10-30 |
Family
ID=16306860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19337493A Expired - Fee Related JP2818101B2 (en) | 1993-08-04 | 1993-08-04 | Method for producing chlorinated vinyl chloride resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2818101B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006322013A (en) * | 2006-09-08 | 2006-11-30 | Sekisui Chem Co Ltd | Method for producing chlorinated vinyl chloride-based resin |
-
1993
- 1993-08-04 JP JP19337493A patent/JP2818101B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006322013A (en) * | 2006-09-08 | 2006-11-30 | Sekisui Chem Co Ltd | Method for producing chlorinated vinyl chloride-based resin |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2818101B2 (en) | 1998-10-30 |
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