公开(公告)号：US5037748A

公开(公告)日：1991-08-06

申请号：US559050

申请日：1990-07-30

申请人： Minoru Matsubara ,  Tohru Masukawa ,  Norihiko Adachi ,  Miki Fukuta ,  Masao Kariya ,  Tohru Kodama ,  Toshio Omori

发明人： Minoru Matsubara ,  Tohru Masukawa ,  Norihiko Adachi ,  Miki Fukuta ,  Masao Kariya ,  Tohru Kodama ,  Toshio Omori

IPC分类号： C07C62/32 ,  C12P7/44

CPC分类号： C12P7/44 ,  C07C62/32 ,  Y10S435/874

摘要： A process for producing cis-4,5-dihydro-4,5-dihydroxyphthalic acid which comprises producing cis-4,5-dihydro-4,5-dihydroxyphthalic acid and/or a salt thereof from phthalic acid and/or a salt thereof using a microorganism whose activity to decompose cis-4,5-dihydro-4,5-dihydroxyphthalic acid and/or a salt thereof has disappeared or diminished, acidifying the product system unless it is acidic, and then extracting therefrom cis-4,5-dihydro-4,5-dihydroxyphthalic acid with such an organic solvent that it is miscible with water in any proportion and the mixture of the organic solvent with water can be separated into two layers upon adding a salt thereto, in the presence of a salt, or with an alcohol having 4 carbon atoms. The process enables one to produce cis-4,5-dihydro-4,5-dihydroxyphthalic acid from phthalic acid and/or its salt in a high yield.

公开(公告)号：US5773519A

公开(公告)日：1998-06-30

申请号：US814480

申请日：1997-03-10

申请人： Nobuyuki Ito ,  Masayuki Hattori ,  Tohru Masukawa ,  Satoshi Ishikawa ,  Minori Kondoh

发明人： Nobuyuki Ito ,  Masayuki Hattori ,  Tohru Masukawa ,  Satoshi Ishikawa ,  Minori Kondoh

IPC分类号： C08F2/22 ,  C08F2/44 ,  C08F257/00 ,  C08F257/02 ,  C08F265/04 ,  C08F285/00 ,  C08F267/06 ,  C08F289/00

CPC分类号： C08F265/04 ,  C08F257/00 ,  C08F257/02 ,  C08F285/00 ,  Y10S525/902

摘要： A process for producing modified cross-linked polymer particles which comprises polymerizing 0.01 to 900 parts by weight of (B) a monomer component containing 50% by weight or more of at least one member selected from the group consisting of aromatic monoalkenyl compounds, acrylic acid esters, methacrylic acid esters, fluoroalkyl acrylates, fluoroalkyl methacrylates, unsaturated carboxylic acids, conjugated diene compounds, vinyl esters and organosilane compounds in the presence of 100 parts by weight of (A) cross-linked polymer particles obtained by polymerizing a monomer mixture comprising 50% by weight or more of at least one cross-linking monomer selected from the group consisting of divinylbenzene, ethylene glycol dimethacrylate and trimethylolpropane trimethacrylate.

摘要翻译： 一种制备改性交联聚合物颗粒的方法，其包括将（A）含有50重量％以上的至少一种选自芳香族单烯基化合物，丙烯酸 酯类，甲基丙烯酸酯，氟烷基丙烯酸酯，甲基丙烯酸氟代烷基酯，不饱和羧酸，共轭二烯化合物，乙烯基酯和有机硅烷化合物，在100重量份存在下，（A）通过聚合包含50 至少一种选自二乙烯基苯，乙二醇二甲基丙烯酸酯和三羟甲基丙烷三甲基丙烯酸酯的交联单体的重量％以上。