1 |
Inhibiting scale in vinyl monomer polymerization |
US09862799 |
2001-05-22 |
US20020015692A1 |
2002-02-07 |
Ramesh
Krishnamurti; Sandor
Nagy; Qi
Wang; Habib
Hichri |
Disclosed is a solution that comprises (A) a solvent; (B) about 0.001 to about 20 wt % of a terpolymer that comprises the condensation reaction product of (1) an aromatic compound that contains a benzene or naphthalene ring substituted with the group OR or SR, where R is hydrogen, alkyl from C1 to C15, or aryl, alkaryl, or aralkyl from C6 to C15; (2) about 0.1 to about 10 moles of a carbonyl compound per mole of said aromatic compound; and (3) about 0.1 to about 10 moles of a thiourea per mole of said aromatic compound (C) about 1 to about 5 wt % of a base; (D) about 0.1 wt % to saturation of a salt; and (E) 0 to about 20 wt % of an alcohol. Also disclosed is a method of making the terpolymer in the absence of an acid catalyst and a method of inhibiting the formation of scale on reactor components in contact with polymerizing vinyl chloride monomer. |
2 |
Apparatus for continuous stirring and process for continuous polycondensation of polymer resin |
US10229070 |
2002-08-28 |
US06846103B2 |
2005-01-25 |
Naruyasu Okamoto; Seiji Motohiro; Yukika Itou; Susumu Harada |
An apparatus for continuous stirring comprising a horizontal elongated cylindrical vessel and two rotating blade assemblies rotatable in the direction opposite to each other provided in parallel to each other in the vessel, where a liquid feed is moved from one end to another therethrough by rotation of the two rotating blade assemblies in the direction opposite to each other, while stirring and mixing the liquid feed, the two rotating blade assemblies each comprising rotor shafts (3a-3b or 3c-3d) supported at both ends of the rotating blade assemblies, support members (4) each fixed to the rotor shafts, connecting members (5) span between the support members (4) and in positions far from the substantial rotating shaft center and a plurality of plate-shaped stirring blades (6) arranged in parallel in the longitudinal direction of the substantial rotating shaft center and fixed to the connecting members (5). |
3 |
Apparatus for continuous stirring and process for continuous polycondensation of polymer resin |
US10229070 |
2002-08-28 |
US20030227816A1 |
2003-12-11 |
Naruyasu
Okamoto; Seiji
Motohiro; Yukika
Itou; Susumu
Harada |
An apparatus for continuous stirring comprising a horizontal elongated cylindrical vessel and two rotating blade assemblies rotatable in the direction opposite to each other provided in parallel to each other in the vessel, where a liquid feed is moved from one end to another therethrough by rotation of the two rotating blade assemblies in the direction opposite to each other, while stirring and mixing the liquid feed, the two rotating blade assemblies each comprising rotor shafts (3a-3b or 3c-3d) supported at both ends of the rotating blade assemblies, support members (4) each fixed to the rotor shafts, connecting members (5) span between the support members (4) and in positions far from the substantial rotating shaft center and a plurality of plate-shaped stirring blades (6) arranged in parallel in the longitudinal direction of the substantial rotating shaft center and fixed to the connecting members (5). |
4 |
Inhibiting scale in vinyl monomer polymerization |
US09862799 |
2001-05-22 |
US06506854B2 |
2003-01-14 |
Ramesh Krishnamurti; Sandor Nagy; Qi Wang; Habib Hichri |
Disclosed is a solution that comprises (A) a solvent; (B) about 0.001 to about 20 wt % of a terpolymer that comprises the condensation reaction product of (1) an aromatic compound that contains a benzene or naphthalene ring substituted with the group OR or SR, where R is hydrogen, alkyl from C1 to C15, or aryl, alkaryl, or aralkyl from C6 to C15; (2) about 0.1 to about 10 moles of a carbonyl compound per mole of said aromatic compound; and (3) about 0.1 to about 10 moles of a thiourea per mole of said aromatic compound (C) about 1 to about 5 wt % of a base; (D) about 0.1 wt % to saturation of a salt; and (E) 0 to about 20 wt % of an alcohol. Also disclosed is a method of making the terpolymer in the absence of an acid catalyst and a method of inhibiting the formation of scale on reactor components in contact with polymerizing vinyl chloride monomer. |
5 |
Continuous heavy condensation method of continuous stirring device and a polycondensation resin |
JP2002167388 |
2002-06-07 |
JP4112908B2 |
2008-07-02 |
幸香 伊藤; 原田 進; 成恭 岡本; 誠二 本廣 |
An apparatus for continuous stirring comprising a horizontal elongated cylindrical vessel and two rotating blade assemblies rotatable in the direction opposite to each other provided in parallel to each other in the vessel, where a liquid feed is moved from one end to another therethrough by rotation of the two rotating blade assemblies in the direction opposite to each other, while stirring and mixing the liquid feed, the two rotating blade assemblies each comprising rotor shafts (3a-3b or 3c-3d) supported at both ends of the rotating blade assemblies, support members (4) each fixed to the rotor shafts, connecting members (5) span between the support members (4) and in positions far from the substantial rotating shaft center and a plurality of plate-shaped stirring blades (6) arranged in parallel in the longitudinal direction of the substantial rotating shaft center and fixed to the connecting members (5). |
6 |
Continuous stirring apparatus and method for continuous polycondensation of polycondensation resin |
JP2002167388 |
2002-06-07 |
JP2004010791A |
2004-01-15 |
OKAMOTO SHIGEYASU; MOTOHIRO SEIJI; ITOU YUKITAKA; HARADA SUSUMU |
PROBLEM TO BE SOLVED: To obtain a high-quality polymer over a wide operation range by minimizing the retention of the treating liquid on the surface of a rotary shaft in a vessel and suppressing the formation of scale.
SOLUTION: The continuous stirring apparatus has two rotary blades rotating opposite to each other and parallelly placed in horizontal direction in a long horizontal cylindrical vessel, and the treating liquid is stirred/mixed by the reverse rotations of the two rotary blades while moving the liquid from one end to the other end of the vessel. Supporting members 4 fixed to the rotary shafts (3a-3b and 3c-3d) supported to both ends of the rotary blades are connected through a connection member at a position separated from the center of the rotary shaft. A plurality of plate stirring blades 6 are attached to the connection member 5 in a state aligned in the longitudinal direction of the rotary shaft. Parts such as shafts are eliminated at the center of the solid rotary blade by this structure.
COPYRIGHT: (C)2004,JPO |
7 |
Continuous processing method and apparatus of the highly viscous substance |
JP25081585 |
1985-11-11 |
JPH0621159B2 |
1994-03-23 |
ODA CHIKAO; YOSHIMATSU YUKYOSHI; ISHIDA KAZUO; KINOSHITA TAKATOSHI; SHINDO HIROHIKO |
|
8 |
JPH0311299B2 - |
JP25071685 |
1985-11-11 |
JPH0311299B2 |
1991-02-15 |
ODA CHIKAO; HIRATSUKA YUKYA; NAKAMOTO HIDEKAZU; KINOSHITA TAKATOSHI; ISHIDA KAZUO |
|
9 |
Apparatus for continuous treatment of highly viscous material |
JP25081585 |
1985-11-11 |
JPS62112624A |
1987-05-23 |
ODA CHIKAO; YOSHIMATSU YUKIYOSHI; ISHIDA KAZUO; KINOSHITA TAKATOSHI; SHINDO HIROHIKO |
PURPOSE: To improve the quality of a treated product by decreasing the dead space, thereby preventing scale formation a and by allowing juxtaposed trunnions to rotate in such a manner that the edge of one of the rod-like square frames of partner impellers may sweep the zone near the rotation center of the other impeller.
CONSTITUTION: While a highly viscous liquid to be treated, fed to the body 1 of a vessel from an entrance nozzle 6, is subjected to agitation and mixing actions by impellers 4a and 4b, it is transferred toward the direction of an exit nozzle 7 and continuously discharged from the exit nozzle 8 after the desired treatment operation has been performed during transfer. At this time, the impellers rotate in such a manner that the edges of the impellers 4a and 4b may sweep the zones near the rotation centers of partner rod-like square frames 3b and 3a and may scrape the inside wall of the body 1 without leaving any area unscraped. In addition, the dead space can be remarkably decreased because the mixing and agitation actions can be performed by the rod-like structure. Therefore, the adhesion to the surface of rotary shafts or to the surfaces of flat impellers or concomitant rotation of the liquid can be substantially eliminated.
COPYRIGHT: (C)1987,JPO&Japio |
10 |
Effective polymerization reactor to the polymer scale adhesion prevention |
JP27118492 |
1992-09-14 |
JP3115953B2 |
2000-12-11 |
卓也 上田; 敏明 丸山; 美博 代田; 正 天野; 善彦 平井 |
|
11 |
Polymerizer effective in prevention of adhesion of polymer scale |
JP27118492 |
1992-09-14 |
JPH0693003A |
1994-04-05 |
UEDA TAKUYA; SHIROTA YOSHIHIRO; HIRAI YOSHIHIKO; MARUYAMA TOSHIAKI; AMANO TADASHI |
PURPOSE:To obtain a polymerizer capable of effectively preventing adhesion/growth of polymer scales and producing a polymer reduced in fish eye by providing piping communicating to a vapor phase part in the polymerizer therein so as to project the top of the piping in the vapor phase. CONSTITUTION:The polymerizer is characterized by projecting the top 2a of piping 2 communicating to a vapor phase part in the polymerizer, e.g. piping for charging, a lower connecting pipe of reflux condenser, lower connecting pipe of reflux condenser or piping for recovering discharge gas by >=1cm, preferably 1-10cm from the inner wall la of the polymerizer 1 to the vapor phase part 5 in the polymerizer. In this polymerizer, a condensed liquid is dropped in the direction of the arrow 6 without directly bringing into contact with the inner wall 1a of the polymerizer. As a result, adhesion/growth of polymer scale can effectively be prevented and a high-quality polymer can be produced in high productivity without impairing effect of coating film of an agent for preventing adhesion of polymer scales on the inner wall (1a) of the polymerizer even in the case of long-term operation and a high quality polymer reduced in fish eye can be produced in high productivity. This polymerizer is useful for polymerization of a monomer, especially having an ethylenic double bond. |
12 |
Reaction apparatus |
JP6388889 |
1989-03-17 |
JPH02245034A |
1990-09-28 |
ICHIHASHI TETSUO; SAITO YASUHIKO |
PURPOSE: To make it possible to construct a reaction apparatus substantially free of a problem of the deposition of scale and excellent in productivity and product quality by positively utilizing the heat of shearing generated during the agitation and mixing of the reactions.
CONSTITUTION: A reaction apparatus for performing a reaction at an elevated temperature by heating, wherein the following structure is adopted. Namely, the body 1 of a reaction tank is connected to an external recirculation pipe 5, and a heat-generating agitator 6 is provided in this pipe 5 to supply the heat generated by the operation of the agitator 6 to the reaction solution to heat it to an elevated temperature. The agitator 6 is desirably of a high-shearing type. It is desirable that a means for heating the body 1 is provided, and this heating means is provided with a means for regulating the body 1 itself to a temperature substantially equivalent to or slightly lower than the temperature of the reaction solution in the tank.
COPYRIGHT: (C)1990,JPO&Japio |
13 |
Apparatus for continuous treatment of highly viscous material |
JP25071685 |
1985-11-11 |
JPS62112623A |
1987-05-23 |
ODA CHIKAO; HIRATSUKA YUKIYA; NAKAMOTO HIDEKAZU; KINOSHITA TAKATOSHI; ISHIDA KAZUO |
PURPOSE: To improve the quality of a treated product by preventing scale formation by decreasing the dead space, by allowing juxtaposed trunnions so rotate in such a manner that the edge of the helical member of the impeller of one trunnion may sweep the zone near the rotation center of the other impeller.
CONSTITUTION: While a highly viscous liquid to be treated, such as polyethylene terephthalate, which is fed to the body 1 of a vessel from an entrance nozzle 7, is subjected to a mixing action by impellers 5a and 5b, it is subjected to a liquid transfer action and is transferred toward the direction of an exit nozzle 8 and continuously discharged from the exit nozzle 8 after the desired treatment operation has been performed during transfer. At this time, the impellers rotate in such a manner that the edges of the helical members 4a and 4b of the impellers 5a and 5b may sweep each other and may scrape the inside wall of the body 1 without leaving any area unscraped and transfer the liquid toward the exit. In addition, the dead space can be remarkably decreased because the mixing and liquid transfer actions can be performed by a rod-like structure. Thus, the adhesion to the surface of rotary shafts or to the surfaces of flat impellers or concomitant rotation of the liquid can be substantially eliminated.
COPYRIGHT: (C)1987,JPO&Japio |
14 |
연속교반장치 및 중축합계수지의 연속중축합방법 |
KR1020020051424 |
2002-08-29 |
KR100884365B1 |
2009-02-17 |
오카모토나루야스; 모토히로세이지; 이토유키카; 하라다스스무 |
An apparatus for continuous stirring comprising a horizontal elongated cylindrical vessel and two rotating blade assemblies rotatable in the direction opposite to each other provided in parallel to each other in the vessel, where a liquid feed is moved from one end to another therethrough by rotation of the two rotating blade assemblies in the direction opposite to each other, while stirring and mixing the liquid feed, the two rotating blade assemblies each comprising rotor shafts (3a-3b or 3c-3d) supported at both ends of the rotating blade assemblies, support members (4) each fixed to the rotor shafts, connecting members (5) span between the support members (4) and in positions far from the substantial rotating shaft center and a plurality of plate-shaped stirring blades (6) arranged in parallel in the longitudinal direction of the substantial rotating shaft center and fixed to the connecting members (5). |
15 |
연속교반장치 및 중축합계수지의 연속중축합방법 |
KR1020020051424 |
2002-08-29 |
KR1020030095169A |
2003-12-18 |
오카모토나루야스; 모토히로세이지; 이토유키카; 하라다스스무 |
본 발명의 목적은 용기내에서의 피처리액의 회전축 표면에의 체류를 매우 적게 하고, 스케일 발생을 억제함으로써, 넓은 운전범위에 있어서, 품질이 좋은 중합물을 얻는 것이다.
가로로 긴 원통형상 용기의 내부에 수평방향으로 나열하여 서로 역회전하는 2개의 회전날개체를 설치하고, 그 2개의 회전날개체의 서로의 역회전에 의해 피처리액을 한쪽 끝으로부터 다른쪽 끝을 향하여 이동시키면서 교반·혼합하는 연속교반장치에 있어서, 2개의 회전날개체의 각각을 회전날개체의 양쪽 끝에 지지된 회전축(3a-3b 및 3c-3d)에 고정된 지지부재(4) 사이를 회전축 중심으로부터 떨어진 위치에 연결부재(5)로 연결하고, 그 연결부재(5) 상에 복수매의 판형상 교반날개(6)를 회전축심 길이방향으로 나열하여 설치하여 구성하고, 실질 회전날개체의 중심으로부터 축 등의 부재를 없앤다. |