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公开(公告)号：EP2828232B1
公开(公告)日：2016-04-20
申请号：EP13710583.9
申请日：2013-02-25
Applicant: Sumitomo Chemical Company Limited
Inventor： KANAZAWA, Hideo , KAWAMURA, Masato , MIURA, Naoki
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公开(公告)号：EP2828232A1
公开(公告)日：2015-01-28
申请号：EP13710583.9
申请日：2013-02-25
Applicant: Sumitomo Chemical Company Limited
Inventor： KANAZAWA, Hideo , KAWAMURA, Masato , MIURA, Naoki
Abstract: An object of the present invention is to provide a process for efficiently producing an alkyl methacrylate. The present invention provides a process for producing an alkyl methacrylate comprising reacting carbon monoxide and an alcohol having 1 to 3 carbon atoms with methylacetylene in the presence of a catalyst comprising a Group 10 metal compound, a protonic acid and a phosphine compound, wherein the methylacetylene has a propadiene content of 50 ppm by weight or less, the use amount of the methylacetylene is 200000 mol or more based on 1 mol of the Group 10 metal compound, and the reaction is performed in the presence of water in an amount of 40000 mol or less based on 1 mol of the Group 10 metal compound.
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公开(公告)号：EP4513124A1
公开(公告)日：2025-02-26
申请号：EP23791633.3
申请日：2023-03-29
Applicant: Sumitomo Chemical Company, Limited
Inventor： HATANO, Ryo , MIURA, Naoki , KINOSHITA, Masahiro
Abstract: A heat medium storage apparatus 10 including a heat medium tank defining an airtight inside space 22 and a preheating device 30 including a temperature adjusting portion 32 capable of melting the heat medium in solid form, wherein the temperature adjusting portion has a first part 32a and a second part 32b,when the temperature adjusting portion is provided so as to extend in the inside space, the first part is in contact with the heat medium so as to be covered with the heat medium, and the second part is provided so as to protrude into a gap area in which the heat medium is absent in the inside space and thereby the second part is exposed, and when the temperature adjusting portion is provided so as to extend in contact with the outer surface of the heat medium tank, the temperature adjusting portion extends in a contact manner so as to stretch from a first area corresponding to an area in contact with the heat medium in the inside space to a second area corresponding to an area not in contact with the heat medium in the inside space, the areas forming the outer surface of the heat medium tank, the first part being in contact with the first area, the second part being in contact with the second area.
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公开(公告)号：EP2960228B1
公开(公告)日：2018-09-12
申请号：EP14775559.9
申请日：2014-03-19
Applicant: Sumitomo Chemical Company, Limited
Inventor： SEKI, Kohei , SUZUTA, Tetsuya , MIURA, Naoki
CPC classification number: C07C67/38 , C07C1/2076 , C07C1/24 , C07C5/2506 , C07C2521/04 , C07C2521/08 , C07C2523/04 , Y02P20/582 , C07C69/54 , C07C11/24 , C07C11/14
Abstract: The method for producing a methacrylic acid ester of the present invention comprises a dehydration reaction step of having acetone undergo a dehydration reaction in the presence of a dehydration reaction catalyst to obtain a reaction mixture; a propyne/propadiene separation step of separating a mixture containing propyne and propadiene as main components from the obtained reaction mixture; a propyne purification step of separating the separated mixture containing propyne and propadiene as main components into a liquid, gas, or gas-liquid mixture containing propyne as a main component, and a liquid, gas, or gas-liquid mixture containing propadiene as a main component; and a carbonylation reaction step of bringing the obtained liquid, gas, or gas-liquid mixture containing propyne as a main component into contact with carbon monoxide and an alcohol having 1 to 3 carbon atoms in the presence of a catalyst containing at least one selected from the group consisting of Group 8 metal elements, Group 9 metal elements, and Group 10 metal elements to obtain a methacrylic acid ester. According to the method of the present invention, it is possible to provide a method for producing a methacrylic acid ester, which is less likely to receive location restrictions and is also economically and industrially advantageous.
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