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公开(公告)号：JP5374774B2
公开(公告)日：2013-12-25
申请号：JP2009538311
申请日：2007-11-02
申请人： エルジー・ケム・リミテッド
发明人： ヨン−ギュ・ハン , キ−スー・イ , ホン−ヨン・クウォン , ジョン−サン・パク , ニコラ・マジアローザ
摘要： The present invention relates to a synthesis method of metal cyclopentadienide by direct reaction of dicyclopentadiene with a group 1 metal in the presence of an aprotic solvent. Unlike the conventional method depending on retro Diels-Alder reaction of dicyclopentadiene to generate indirectly cyclopentadiene, the method of the present invention favors generation of cyclopentadiene and metal cyclopentadienide as well by adding dicyclopentadiene directly when the reaction temperature reaches to the boiling point of a reaction solvent.
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公开(公告)号：JP2002121318A
公开(公告)日：2002-04-23
申请号：JP2000316923
申请日：2000-10-17
发明人： UEMICHI YOSHIO , SHOBU AKEMI , SUGIOKA MASATOSHI , ITOU MASAAKI , NISHINO JUNYA
IPC分类号： F25J3/02 , B01D3/14 , B01D5/00 , B29B17/00 , B29B17/04 , C07B61/00 , C07C2/42 , C07C4/22 , C07C11/02 , C07C15/02 , C08J11/12 , C08J11/16
摘要： PROBLEM TO BE SOLVED: To effectively recover an olefin gas, hydrogen, and BTX from a waste plastic. SOLUTION: This method comprises a pretreatment step (I) for separating a waste plastic into a polyolefin plastic and other plastics; a thermal decomposition step (II) for thermally decomposing the polyolefin plastic; a catalytic decomposition step (III) wherein 2-4C olefins are formed from a thermal decomposition gas 5 (generated at step II) by the action of a boron-containing silicate catalyst 7 of a first catalytic decomposition section 8 and BTX and hydrogen are formed by the action of a gallium-containing silicate catalyst 9 of a second catalytic decomposition section 10; a high-boiling-point component separation step (IV) for separating a high-boiling-point component from a gas 13 coming out of step III; and a gas-liquid separation step (V) wherein the gas 13 freed of the high-boiling-point component is cooled to be separated into a gas phase 16 mainly comprising a 2-4C olefin gas and hydrogen and a liquid phase 17 mainly comprising BTX.
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公开(公告)号：JP2001335514A
公开(公告)日：2001-12-04
申请号：JP2000157048
申请日：2000-05-26
申请人： KOBE STEEL LTD
发明人： NAGASE YOSHIYUKI , FUKUSATO RYUICHI
摘要： PROBLEM TO BE SOLVED: To increase the recovery ratio of styrene monomer by raising the decomposition ratio and suppressing the side reactions of the styrene monomer when polystyrene is decomposed in high-temperature and high-pressure water. SOLUTION: This method is to decompose the polystyrene in the high- temperature and high-pressure water in a reactor. The temperature of the high- temperature and high-pressure water is 250-550 deg.C and the pressure thereof is the saturated steam pressure or above or the critical pressure or above at the temperature. An aqueous solution in which low-molecular compound components produced by the decomposition are dissolved therein is continuously led out to a region under conditions of a lower temperature than that in a decomposition reaction region while continuously feeding the high-temperature and high-pressure water to the reactor. Thereby, the time for the low-molecular compound component to stay in the decomposition reaction region is reduced.
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公开(公告)号：JP2001302560A
公开(公告)日：2001-10-31
申请号：JP2000128699
申请日：2000-04-28
发明人： KIDA MASATSUGU , SUZUKI HIROAKI
摘要： PROBLEM TO BE SOLVED: To provide a method and an apparatus for producing a high purity cyclopentadiene or a high-purity cyclopentadiene derivative and further a method for producing a high purity metallocene or a high-purity metallocene derivative used as a raw material for chemical vapor deposition(CVD). SOLUTION: This method is to produce the cyclopentadiene and the cyclopentadiene derivative by heating a mixture containing dicylopentadiene and/or a dicyclopentadiene derivative and the method comprises a first step of heating the mixture and providing a vapor, a second step of heating and maintaining the vapor at a higher temperature than the boiling point of the cyclopentadiene or the cyclopentadiene derivative, condensing and removing high-boiling components and recovering the residual vapor and a third step of heating and maintaining the recovered vapor at a lower temperature than the boiling point of the cyclopentadiene or the cyclopentadiene derivative, condensing and recovering the cyclopentadiene or the cyclopentadiene derivative. The yield of the cyclopentadiene or the cyclopentadiene derivative is improved by bringing the vapor into contact with nitrogen gas in the third step.
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公开(公告)号：JP2001200092A
公开(公告)日：2001-07-24
申请号：JP2000007546
申请日：2000-01-17
申请人： ASAHI KASEI CORP
发明人： FUJISAWA TAKESHI , ARAI YOSHIYUKI
摘要： PROBLEM TO BE SOLVED: To provide a chemically recycling method of effectively recovering a styrene monomer from a styrenic resin without forming a carbide. SOLUTION: By the use of decomposition reaction at a decomposition temperature of 280-600 deg.C at a degree of depressurization of =90% can be achieved, and with the styrene monomer thus obtained, the repolymerization can be effected.
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公开(公告)号：JPH0848640A
公开(公告)日：1996-02-20
申请号：JP11166195
申请日：1995-05-10
申请人： SUMITOMO CHEMICAL CO
发明人： OI NOBUO , KIMURA KAZUO , NARIYAMA KENICHI
摘要： PURPOSE:To provide the method for producing the subject compound by thermally decomposing dicyclopentadiene in a liquid phase and subsequently subjecting the produced cyclopentadiene to a Diels Alder reaction with butadiene, capable of reducing the loss of the dicyclopentadiene and the cyclopentadiene. CONSTITUTION:In the method for producing the 5-vinyl-2-norbornene by thermally decomposing (A) dicyclopentadiene and subsequently reacting (B) the obtained cyclopentadiene with butadiene, the raw material solution comprising (C) tetrahydroindene and the compound A in a C/A weight ratio of 5/100 to 80/100 is thermally decomposed in an aromatic hydrocarbon solvent having a boiling point of 250-300 deg.C at a reaction temperature of 200-240 deg.C for 10-120min, and the reaction mixture is distilled to obtain a fraction consisting mainly of the compound B and a fraction containing the compounds A and C. The latter fraction is further distilled to separate the compound A from the compound C. The compound A is circulated to the thermal decomposition process, and the compound C is removed to the outside. Then, the compound B is subjected to a Diels Alder reaction with butadiene, and the obtained reaction mixture is distilled into the objective compound and the compound A. The compound A is circulated to the thermal decomposition process.
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公开(公告)号：JPH07309790A
公开(公告)日：1995-11-28
申请号：JP10670694
申请日：1994-05-20
申请人： MITSUI NORIO
发明人： MITSUI NORIO
IPC分类号： C08J11/00 , B29B13/10 , B29B17/00 , B29K25/00 , B29K105/26 , C07C4/22 , C07C15/46 , C10G1/10
摘要： PURPOSE:To provide a resin processing apparatus capable of directly decomposing crushed resin pieces with heat to continuously extract and recover raw material components from the resin by using a crushing mechanism to crush a resin material and a decomposition treatment means to effect the thermal decomposition of resin pieces crushed by the crushing mechanism. CONSTITUTION:A resin material 3 placed on a feeding conveyor 10 is supplied through an introducing part 10a and a guide plate 11 to a crushing part composed of rotary crushing shafts 12, 13. The crushing of the resin 3 is surely and efficiently performed by rotating a pull-in rotor 14 placed above the crushing part and pulling the resin material 3 into the gap between the rotary crushing shafts 12, 13 by the pull-in arms 141 of the rotor. The resin pieces formed by the crushing action of the rotary crushing shafts 12, 13 are dropped into a container 16, transferred through a transfer pipe by a screw conveyor 17 and directly thrown into a decomposition furnace. The decomposition furnace is charged with calcium hydroxide as a catalyst or oxygen to promote the decomposition of the polymer.
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公开(公告)号：JPH06507647A
公开(公告)日：1994-09-01
申请号：JP51525193
申请日：1993-03-12
摘要： PCT No. PCT/DE93/00226 Sec. 371 Date Jan. 12, 1994 Sec. 102(e) Date Jan. 12, 1994 PCT Filed Mar. 12, 1993 PCT Pub. No. WO93/18112 PCT Pub. Date Sep. 16, 1993The instant invention relates to a process for the production of olefins from plastic waste, which comprises adjustment of a desired viscosity by thermal pretreatment of plastic waste in a temperature range of 350 DEG to 550 DEG C. and thermal treatment of the product obtained by the thermal pretreatment in a temperature range of 700 DEG to 1100 DEG C.
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