JPS6247846B2 - - Google Patents
Info
- Publication number
- JPS6247846B2 JPS6247846B2 JP58157469A JP15746983A JPS6247846B2 JP S6247846 B2 JPS6247846 B2 JP S6247846B2 JP 58157469 A JP58157469 A JP 58157469A JP 15746983 A JP15746983 A JP 15746983A JP S6247846 B2 JPS6247846 B2 JP S6247846B2
- Authority
- JP
- Japan
- Prior art keywords
- monomer
- liquid
- gas
- storage tank
- top plate
- 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
- 239000000178 monomer Substances 0.000 claims description 30
- 238000010438 heat treatment Methods 0.000 claims description 16
- 230000005494 condensation Effects 0.000 claims 1
- 238000009833 condensation Methods 0.000 claims 1
- 238000012719 thermal polymerization Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 19
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 16
- 238000006116 polymerization reaction Methods 0.000 description 15
- 238000001816 cooling Methods 0.000 description 12
- 239000007791 liquid phase Substances 0.000 description 12
- 229920000642 polymer Polymers 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000012071 phase Substances 0.000 description 11
- 239000003112 inhibitor Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical group C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- VAPKHDZBJXRVNG-UHFFFAOYSA-N 1-ethenyl-3-methylbenzene;1-ethenyl-4-methylbenzene Chemical group CC1=CC=C(C=C)C=C1.CC1=CC=CC(C=C)=C1 VAPKHDZBJXRVNG-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical group CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
【発明の詳細な説明】
本発明はポリマー生成原料である熱重合性モノ
マーの貯蔵装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a storage device for thermally polymerizable monomers, which are raw materials for producing polymers.
熱重合性モノマーをタンクに貯蔵する際、従来
は、重合防止剤をモノマー液体中に添加したり、
モノマー液体を低温に保つて重合を防止すること
が広くおこなわれていた。しかし、重合防止剤に
よるときは、熱重合性モノマーが貯蔵中に蒸発し
てタンクの天板や側壁に凝縮した場合には熱重合
性モノマーの重合を防止できなかつた。これは、
熱重合性モノマー体よりも重合防止剤の方が揮発
性が通常低いので、この凝縮したモノマー液体中
には重合防止剤がほとんど含まれていないからで
ある。また、モノマー液体を低温に保つことによ
る重合防止方法にあつても、やはり、タンクの天
板や側壁に凝縮した熱重合性モノマーの重合を防
止できなかつた。これは、かかる凝縮液体を常時
低温に保つことが難しいからである。いずれにし
ろ、重合したポリマーは、自然落下したり、熱重
合性モノマーの液面が上昇する際に熱重合性モノ
マー液体中に溶解する。この結果、これらの熱重
合性モノマーを使用すると、重合反応に悪影響を
あたえ、また、得られる製品ポリマーの品質が劣
化してしまう。 When storing thermally polymerizable monomers in tanks, conventionally, polymerization inhibitors were added to the monomer liquid, or
It was widely practiced to keep monomer liquids at low temperatures to prevent polymerization. However, when a polymerization inhibitor was used, polymerization of the thermally polymerizable monomer could not be prevented if the thermally polymerizable monomer evaporated during storage and condensed on the top plate or side wall of the tank. this is,
This is because the polymerization inhibitor usually has lower volatility than the thermally polymerizable monomer, so the condensed monomer liquid contains almost no polymerization inhibitor. Furthermore, even with the method of preventing polymerization by keeping the monomer liquid at a low temperature, polymerization of the thermally polymerizable monomer condensed on the top plate and side walls of the tank could not be prevented. This is because it is difficult to keep such condensed liquid at a low temperature all the time. In any case, the polymerized polymer dissolves in the thermally polymerizable monomer liquid when it falls naturally or when the liquid level of the thermally polymerizable monomer rises. As a result, the use of these thermally polymerizable monomers has an adverse effect on the polymerization reaction, and the quality of the resulting product polymer deteriorates.
例えば、スチレンモノマーは熱重合性が大きい
ので、通常10〜15℃に冷却しパラ―ｔ―ブチカテ
コール等の重合防止剤を加えて重合を防止しなが
ら貯槽に貯蔵されている。外気温がスチレンモノ
マーの液体温度よりも低くなる春・秋・冬には、
タンクの器壁もスチレンモノマーの液体温度より
も低くなるので、スチレンモノマーガスがタンク
の天板や側壁に凝縮し易くなる。特に、タンクの
天板や側壁の溜り部、或いは角部等に著しくスチ
レンモノマーが凝縮する。パラ―ｔ―ブチルカテ
コールはスチレンモノマーよりも揮発性が小さい
ので凝縮したスチレンモノマーにはほとんどパラ
―ｔ―ブチルカテコールが含まれておらず、スチ
レンモノマーの重合がかかる凝縮液部分で進行す
る。この重合によつて生成したポリスチレンはス
チレンモノマー液中に落下溶解することになる。
かかるスチレンモノマー液を使用するとポリマー
濃度が上昇し製品ポリマーの色調が不良となる。 For example, styrene monomer is highly thermally polymerizable, so it is usually cooled to 10 to 15°C and stored in a storage tank while adding a polymerization inhibitor such as para-t-buticatechol to prevent polymerization. In spring, autumn, and winter when the outside temperature is lower than the liquid temperature of styrene monomer,
Since the temperature of the tank wall is also lower than the liquid temperature of the styrene monomer, styrene monomer gas tends to condense on the top plate and side walls of the tank. In particular, styrene monomer condenses significantly on the tank top plate, pools on side walls, corners, etc. Since para-t-butylcatechol has lower volatility than styrene monomer, the condensed styrene monomer contains almost no para-t-butylcatechol, and the polymerization of the styrene monomer proceeds in the condensate portion. The polystyrene produced by this polymerization falls and dissolves in the styrene monomer liquid.
When such a styrene monomer liquid is used, the polymer concentration increases and the color tone of the product polymer becomes poor.
本発明の目的は、熱重合性モノマー気体が貯槽
の器壁に接しても前記モノマー気体が凝縮してポ
リマーが生成されてしまうことのない熱重合性モ
ノマーの貯蔵装置を提供することにある。 An object of the present invention is to provide a storage device for thermally polymerizable monomers that does not cause the monomer gas to condense and produce a polymer even if the gas is in contact with the wall of a storage tank.
そのため本発明は、熱重合性モノマーを貯蔵す
る貯槽の、例えば天板外周部や天板付近の側壁等
の気相部と接する器壁の外周部に加温手段を設
け、この加温手段により前記器壁を加熱して器壁
に接する熱重合性モノマー気体を凝縮させないよ
うにして、前記目的を達成しようとするものであ
る。 Therefore, the present invention provides a heating means at the outer periphery of the container wall in contact with the gas phase part, such as the outer periphery of the top plate or the side wall near the top plate, of the storage tank storing the thermopolymerizable monomer. The purpose is to achieve the above object by heating the vessel wall to prevent the thermally polymerizable monomer gas in contact with the vessel wall from condensing.
以下、本発明の実施例を図面に基づいて説明す
る。 Embodiments of the present invention will be described below based on the drawings.
第１図において貯槽１１は器壁としての例えば
円筒状の側壁１１Ａと、この側壁１１Ａの上端部
に設けられた同じく器壁としての例えば円板状或
いは陣笠状の天板１１Ｂとから構成され、内部に
はスチレンモノマー液体、α―メチルスチレンモ
ノマー液体、アクリロニトリルモノマー液体等
の、熱重合性モノマー液体が所定量貯蔵され、こ
の貯蔵部分が液相部１２とされている。また、こ
の液相部１２の上部にはスチレモノマーガス、α
―メチルスチレンモノマーガス、アクリロニトリ
ルモノマーガス等の熱重合性モノマー気体が前記
液相部１２と平衡状態を保ちながら充満されてお
り、この熱重合性モノマー気体が充満された部分
が気相部１３とされている。 In FIG. 1, the storage tank 11 is composed of, for example, a cylindrical side wall 11A as a container wall, and a top plate 11B, for example, in the shape of a disc or a cap, provided at the upper end of the side wall 11A. A predetermined amount of thermally polymerizable monomer liquid such as styrene monomer liquid, α-methylstyrene monomer liquid, acrylonitrile monomer liquid, etc. is stored inside, and this storage portion is used as a liquid phase portion 12. Moreover, in the upper part of this liquid phase part 12, styrene monomer gas, α
- A thermally polymerizable monomer gas such as methylstyrene monomer gas or acrylonitrile monomer gas is filled while maintaining an equilibrium state with the liquid phase portion 12, and the portion filled with this thermally polymerizable monomer gas is the gas phase portion 13. has been done.
貯槽１１の液相部１２、別言すれば貯槽１１の
比較的底部側には冷却手段１４が設けられてい
る。この冷却手段１４は、貯槽１１内に敷設され
た冷却パイプ１５を有し、この冷却パイプ１５内
には冷却用熱媒体としてのフロンガス等が循環さ
れるようになつている。また、冷却パイプ１５は
貯槽１１の外部に取出され、冷却パイプ１５内の
冷却用熱媒体はフロン冷凍器等の冷却用熱交換器
１６により冷却され、かつ、循環ポンプ１７によ
り循環されるようになつている。このように構成
された前記冷却手段１４により液相部１２の温度
は、熱重合性モノマーがスチレンモノマーである
場合には通常、常に15℃以下に維持されるように
なつている。なお、液相部１２の適宜位置には温
度計１８が設けられ、この温度計１８により前記
冷却手段１４の運転が自動若しくは手動により制
御されるようになつている。 A cooling means 14 is provided in the liquid phase portion 12 of the storage tank 11, in other words, at a relatively bottom side of the storage tank 11. The cooling means 14 has a cooling pipe 15 laid in the storage tank 11, and a fluorocarbon gas or the like as a cooling heat medium is circulated within the cooling pipe 15. Further, the cooling pipe 15 is taken out to the outside of the storage tank 11, and the cooling heat medium in the cooling pipe 15 is cooled by a cooling heat exchanger 16 such as a fluorocarbon refrigerator, and is circulated by a circulation pump 17. It's summery. The temperature of the liquid phase portion 12 is normally maintained at 15° C. or lower by the cooling means 14 configured in this manner when the thermally polymerizable monomer is a styrene monomer. A thermometer 18 is provided at an appropriate position in the liquid phase portion 12, and the operation of the cooling means 14 is automatically or manually controlled by this thermometer 18.
貯槽１１の気相部１３側の内周面には何ら突出
する部品、部材等は設けられておらず、即ち前記
内周面は溜り部、或いは角部（液滴を生じさせ易
い部分）等のない極めて平坦な構成となつてい
る。従つて、気相部１３を構成するスチレンモノ
マーガス等が凝縮しにくい構成となつているわけ
である。 The inner peripheral surface of the storage tank 11 on the side of the gas phase section 13 is not provided with any protruding parts, members, etc., that is, the inner peripheral surface is a pool part, a corner part (a part where droplets are likely to occur), etc. It has an extremely flat structure with no ridges. Therefore, the structure is such that the styrene monomer gas and the like constituting the gas phase section 13 are difficult to condense.
貯槽１１の気相部１３の外周部には、加温手段
１９が設けられている。この加温手段１９は、側
壁１１Ａの上部側および天板１１Ｂの夫々に敷設
された電気ヒータ２１を有している。この電気ヒ
ータ２１は側壁１１Ａの上部側外周部を取巻くと
ともに天板１１Ｂの外周面に、第２図に示される
ように、例えば螺旋状に所定間隔で幾回か巻かれ
た状態で配置されている。このように構成された
電気ヒータ２１は、スイツチ２２，ヒユーズ２３
を介して電源２４に接続され、これにより発熱用
電流が電気ヒータ２１に通ずるようになつてい
る。また、前記スイツチ２２には貯槽１１の気相
部１３の所定位置に複数若しくは単数設けられた
表面温度計２５により開閉制御されるようになつ
ており、これにより気相部１３を構成する熱重合
性モノマーがスチレンモノマーガスである場合に
は、常に25℃程度に加温されるようになつてお
り、従つて、温度計１８で検出される液相部１２
の温度よりも天板１１Ｂの温度が10℃程度高くな
るよう設定されている。 A heating means 19 is provided on the outer periphery of the gas phase section 13 of the storage tank 11 . This heating means 19 includes electric heaters 21 installed on the upper side of the side wall 11A and on the top plate 11B, respectively. The electric heater 21 is arranged around the upper outer circumference of the side wall 11A and on the outer circumferential surface of the top plate 11B, for example, in a spiral shape wound several times at predetermined intervals, as shown in FIG. There is. The electric heater 21 configured in this way includes a switch 22 and a fuse 23.
The electric heater 21 is connected to a power source 24 through the electric heater 21, so that a heat generating current is passed to the electric heater 21. Further, the switch 22 is controlled to open and close by a plurality of surface thermometers 25 or a single surface thermometer 25 provided at a predetermined position in the gas phase section 13 of the storage tank 11. When the monomer is styrene monomer gas, it is always heated to about 25°C, so that the liquid phase part 12 detected by the thermometer 18
The temperature of the top plate 11B is set to be approximately 10° C. higher than the temperature of the top plate 11B.
前記天板１１Ｂの外周面にはその周方向に沿つ
て所定間隔、例えば円周を13等分する間隔で補強
材としてのアングル鋼２６が設けられている。ま
た、貯槽１１の外周部は断熱材２７により覆われ
ている。 Angle steels 26 as reinforcing members are provided on the outer peripheral surface of the top plate 11B at predetermined intervals along the circumferential direction, for example, at intervals dividing the circumference into 13 equal parts. Further, the outer peripheral portion of the storage tank 11 is covered with a heat insulating material 27.
このような本実施例によれば、外気温度の低い
春・秋・冬にあつても、スチレンモノマーガス等
の熱重合モノマー気体が貯槽１１の器壁（側壁１
１Ａ，天板１１Ｂ）上で凝縮して自然重合するこ
とがない。従つて、貯槽１１内に自然重合したポ
リマーが付着しないため、貯槽１１の汚れが少な
く、清掃費用も低減されるという効果がある。 According to this embodiment, even in spring, autumn, and winter when the outside air temperature is low, thermally polymerized monomer gas such as styrene monomer gas flows through the container wall (side wall 1) of the storage tank 11.
1A, top plate 11B) and will not condense and spontaneously polymerize. Therefore, since the naturally polymerized polymer does not adhere to the inside of the storage tank 11, there is an effect that the storage tank 11 is less contaminated and cleaning costs are also reduced.
また、気相部１３内において自然重合が生じな
いため、自然重合したポリマーが液相部１２に滴
下することがなく、従つて液相部１２の品質が劣
化せず、液相部１２を原料として生成されるポリ
マーは、ポリマー濃度が上昇せず、色調不良とも
ならず、優れた品質を有するのもとすることがで
きる。 In addition, since spontaneous polymerization does not occur in the gas phase section 13, naturally polymerized polymer does not drip into the liquid phase section 12, so the quality of the liquid phase section 12 does not deteriorate and the liquid phase section 12 is used as raw material. The polymer produced as a polymer does not have an increase in polymer concentration or poor color tone, and can have excellent quality.
更に、加温手段１９や表面温度計２５は全て貯
槽１１の外周側に設けられており、気相部１３内
には溜り部、或いは角部となるような何らの突出
部分はなく極めて平担なものとなつており、この
点からも熱重合性モノマー気体が凝縮しにくくな
つている。 Furthermore, the heating means 19 and the surface thermometer 25 are all provided on the outer circumferential side of the storage tank 11, and the gas phase section 13 is extremely flat without any protruding parts that may become pools or corners. This also makes it difficult for the thermally polymerizable monomer gas to condense.
第３図には前記以外の実施例の要部が示されて
いる。図中、加温手段３９は前記加温手段１９が
電気ヒータ構造であつたのと異なり、温水等の熱
媒体液循環構造となつている。即ち、加温手段３
９は、天板１１Ｂ上に同芯状に配置された円管状
の分配管４１および集合管４２を有し、これら分
配管４１と集合管４２は天板１１Ｂの径方向に沿
つて複数配置された連結管４３により互いに連通
されている。また、各連結管４３には絞り弁４４
が設けられており、各絞り弁４４を調整してこれ
ら各分配管４１，集合管４２，および連結管４３
内を流れる温水等の流量の均等化が図られてい
る。 FIG. 3 shows the main parts of an embodiment other than the above. In the figure, the heating means 39 has a heating medium liquid circulation structure such as hot water, unlike the heating means 19 which has an electric heater structure. That is, the heating means 3
9 has a circular distribution pipe 41 and a collecting pipe 42 arranged concentrically on the top plate 11B, and a plurality of these distribution pipes 41 and collecting pipes 42 are arranged along the radial direction of the top plate 11B. They are communicated with each other by a connecting pipe 43. In addition, each connecting pipe 43 has a throttle valve 44.
are provided, and by adjusting each throttle valve 44, these respective distribution pipes 41, collecting pipes 42, and connecting pipes 43
Efforts are being made to equalize the flow rate of hot water, etc. flowing inside.
前記分配管４１には途中にポンプ４５を有する
送り管４６を介して温水槽４７が連結され、一
方、集合管４２には戻し管４８を介して温水槽４
７が連通されている。温水槽４７内には所定量の
温水等が貯槽され、かつ、温水計４９により適宜
加熱制御される加熱器５１が設けられ、これによ
り、温水槽４７内の温水は最高でも40℃程度の温
度の状態に維持されている。また、温水槽４７に
は液面計５２が設けられており、この液面計５２
により検知された液面位により常時一定の温水が
収容されるようになつている。 A hot water tank 47 is connected to the distribution pipe 41 via a feed pipe 46 having a pump 45 in the middle, while a hot water tank 47 is connected to the collecting pipe 42 via a return pipe 48.
7 are connected. A predetermined amount of hot water is stored in the hot water tank 47, and a heater 51 is provided which is appropriately heated and controlled by a hot water meter 49, so that the hot water in the hot water tank 47 has a maximum temperature of about 40°C. is maintained in a state of Further, a liquid level gauge 52 is provided in the hot water tank 47, and this liquid level gauge 52
A constant amount of hot water is always stored depending on the liquid level detected by the system.
このような温水循環方式による加温手段３９に
あつては、前記電気発熱方式による加温手段１９
に比して建造費が安価である一方、温度制御等が
若干困難なものとなるが、前記実施例と略同様の
作用、効果を奏するものである。 In the case of the heating means 39 using such a hot water circulation method, the heating means 19 using the electric heating method
Although the construction cost is lower than that of the above example, temperature control etc. are somewhat difficult, but it provides substantially the same functions and effects as the above embodiment.
なお実施にあたり、加温手段１９，３９を、温
度計１８で検出される液相部１２の温度よりも常
に10℃程度以上となるよう自動制御させてもよ
い。また、貯槽１１の気相部１側の内周面は極め
て平担に構成されているものとしたが、これに限
らず、例えば温度計等が内部側に突出していても
よい。但し、平担に構成されていれば、前述のよ
うな効果がある。 In addition, in implementation, the heating means 19 and 39 may be automatically controlled so that the temperature of the liquid phase portion 12 is always about 10° C. or higher than the temperature detected by the thermometer 18. Further, although the inner circumferential surface of the storage tank 11 on the side of the gas phase section 1 is configured to be extremely flat, the present invention is not limited to this, and for example, a thermometer or the like may protrude inside. However, if it is configured flatly, the above-mentioned effects can be obtained.
上述のように本発明によれば、気相部の熱重合
性モノマー気体が凝縮して自然重合によるポリマ
ーを生成することのない熱重合性モノマーの貯蔵
装置を提供することができる。 As described above, according to the present invention, it is possible to provide a storage device for a thermally polymerizable monomer in which the gaseous thermally polymerizable monomer in the gas phase does not condense and produce a polymer through spontaneous polymerization.
第１図は本発明に係る熱重合性モノマーの貯蔵
装置の一実施例を示す断面図、第２図は前記実施
例の加温手段を示す概略構成図、第３図は前記以
外の実施例の加温手段の構成を示す概略構成図で
ある。
１１……貯槽、１１Ａ……器壁としての側壁、
１１Ｂ……器壁としての天板、１２……液相部、
１３……気相部、１４……冷却手段、１９，３９
……加温手段。
FIG. 1 is a sectional view showing an embodiment of a storage device for thermally polymerizable monomers according to the present invention, FIG. 2 is a schematic diagram showing the heating means of the above embodiment, and FIG. 3 is an embodiment other than the above. FIG. 2 is a schematic configuration diagram showing the configuration of a heating means. 11...Storage tank, 11A...Side wall as vessel wall,
11B...Top plate as vessel wall, 12...Liquid phase part,
13... Gas phase part, 14... Cooling means, 19, 39
...Heating means.
Claims (1)
接する部分の器壁に、器壁に接する熱重合性モノ
マー気体を凝縮させないための加温手段が設けら
れていることを特徴とする熱重合性モノマーの貯
蔵装置。1. Thermal polymerization characterized in that a heating means is provided on the wall of the tank in contact with the gas phase portion of the storage tank for storing the thermopolymerizable monomer in order to prevent condensation of the thermopolymerizable monomer gas in contact with the container wall. Storage device for monomers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58157469A JPS6048938A (en) | 1983-08-29 | 1983-08-29 | Apparatus for storing thermally polymerizable monomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58157469A JPS6048938A (en) | 1983-08-29 | 1983-08-29 | Apparatus for storing thermally polymerizable monomer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6048938A JPS6048938A (en) | 1985-03-16 |
| JPS6247846B2 true JPS6247846B2 (en) | 1987-10-09 |
Family
ID=15650351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58157469A Granted JPS6048938A (en) | 1983-08-29 | 1983-08-29 | Apparatus for storing thermally polymerizable monomer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6048938A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01255016A (en) * | 1988-04-01 | 1989-10-11 | Shimadzu Corp | Gas density stabilizer |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61275232A (en) * | 1985-05-30 | 1986-12-05 | Idemitsu Petrochem Co Ltd | Storage of polymerizable substance |
| JP4451552B2 (en) * | 2000-08-02 | 2010-04-14 | 株式会社日本触媒 | Reservoir apparatus containing liquid material with easy polymerization and solidification and pressure control method therefor |
| JP2005336061A (en) * | 2004-05-24 | 2005-12-08 | Mitsubishi Chemicals Corp | Method for detecting formation and/or deposition of polymer in apparatus for handling readily polymerizable substance, apparatus for handling readily polymerizable substance used therefor and method for producing readily polymerizable substance using the same |
| JP6237563B2 (en) * | 2014-10-09 | 2017-11-29 | 三菱ケミカル株式会社 | Storage tank equipment and storage method for easily polymerizable compounds |
-
1983
- 1983-08-29 JP JP58157469A patent/JPS6048938A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01255016A (en) * | 1988-04-01 | 1989-10-11 | Shimadzu Corp | Gas density stabilizer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6048938A (en) | 1985-03-16 |
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