公开(公告)号：US5371280A

公开(公告)日：1994-12-06

申请号：US788326

申请日：1991-11-05

申请人： Hidefumi Haramaki ,  Kazuhiko Sakamoto ,  Masatoshi Ueoka ,  Yohji Akazawa ,  Masao Baba

发明人： Hidefumi Haramaki ,  Kazuhiko Sakamoto ,  Masatoshi Ueoka ,  Yohji Akazawa ,  Masao Baba

IPC分类号： C07C7/20 ,  C07C51/50 ,  C07C57/075 ,  C07C67/62 ,  C07C57/04 ,  B01D3/34

CPC分类号： C07C7/20 ,  C07C51/50 ,  C07C67/62

摘要： This invention is directed to a polymerization inhibitor and a polymerization inhibiting method which enables the continuous operation of a device for producing vinyl compounds over a long period of time and virtually eliminates corrosion. Further, the polymerization inhibitors according to the present invention are superior in polymerization inhibition when transferring and storing the vinyl compound products and in other cases. The polymerization inhibitor according to the present invention contains manganese dithiocarbamate or a thiuram compound as an effective component. The polymerization inhibiting method of this invention comprises individual or joint use of said inhibitors, or joint use of a copper salt, another manganese salt, or quinones in addition to said inhibitors. Further, the method may comprise jointly using copper dithiocarbamates in a manganese salt as polymerization inhibitors, or jointly using quinones in addition to the salts.

摘要翻译： 本发明涉及聚合抑制剂和聚合抑制方法，其能够长时间地连续操作用于生产乙烯基化合物的装置，并且实际上消除了腐蚀。 此外，根据本发明的聚合抑制剂在转移和储存乙烯基化合物产品时的聚合抑制性优异，在其它情况下也是优异的。 本发明的阻聚剂含有二硫代氨基甲酸锰或秋兰姆化合物作为有效成分。 除了所述抑制剂之外，本发明的聚合抑制方法包括单独或联合使用所述抑制剂，或联合使用铜盐，另一种锰盐或醌。 此外，该方法可以包括在锰盐中联合使用二硫代氨基甲酸铜作为聚合抑制剂，或者除了盐之外共同使用醌。

公开(公告)号：US5785821A

公开(公告)日：1998-07-28

申请号：US759219

申请日：1996-12-05

申请人： Kazuhiko Sakamoto ,  Sei Nakahara ,  Takahiro Takeda ,  Masatoshi Ueoka ,  Yohji Akazawa

发明人： Kazuhiko Sakamoto ,  Sei Nakahara ,  Takahiro Takeda ,  Masatoshi Ueoka ,  Yohji Akazawa

IPC分类号： C07C57/05 ,  C07C51/42 ,  C07C51/46 ,  C07C57/055 ,  C07C57/07 ,  B01D3/34

CPC分类号： C07C51/46

摘要： The present invention provides an improved process for production of acrylic acid by subjecting propylene and/or acrolein to catalytic gas-phase oxidation with a molecular oxygen-containing gas. In the process, the mixed gas obtained by the catalytic gas-phase oxidation is contacted with an aqueous collecting agent containing acrylic acid, acetic acid and a poorly-soluble-in-water solvent, to form an aqueous acrylic acid solution; and the aqueous acrylic acid solution is subjected to azeotropic distillation in the presence of a poorly-soluble-in-water solvent to remove by-products and obtain high-purity acrylic acid.

摘要翻译： 本发明提供通过使丙烯和/或丙烯醛与含分子氧的气体进行催化气相氧化来生产丙烯酸的改进方法。 在此过程中，将通过催化气相氧化获得的混合气体与含丙烯酸，乙酸和难溶于水的溶剂的含水收集剂接触，形成丙烯酸水溶液; 在难溶于水的溶剂的存在下，将丙烯酸水溶液进行共沸蒸馏，除去副产物，得到高纯度丙烯酸。

公开(公告)号：US5288790A

公开(公告)日：1994-02-22

申请号：US82525

申请日：1993-06-25

申请人： Saburo Nakahara ,  Yasuhiro Yamamoto ,  Yohji Akazawa ,  Masao Baba ,  Yoshikuni Mori

发明人： Saburo Nakahara ,  Yasuhiro Yamamoto ,  Yohji Akazawa ,  Masao Baba ,  Yoshikuni Mori

IPC分类号： C08J3/20 ,  C08J3/22 ,  C09C1/56 ,  C09C3/10 ,  C08J5/10 ,  C08K3/04 ,  C08L61/26

CPC分类号： C08J3/20 ,  C08J3/226 ,  C09C1/56 ,  C09C3/10 ,  C01P2004/03 ,  C01P2004/32 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/22 ,  C01P2006/60 ,  C01P2006/80 ,  C01P2006/90 ,  C08J2361/20 ,  C08J2461/00

摘要： Spherical fine particles of colored resin are provided. The fine particles are of a spherical shape and are superior in heat resistance, solvent resistance, and chemical resistance, and sufficiently satisfactory in durability and coloring, and industrially advantageous. The spherical fine particles of colored resin are made by incorporating an amino resin cured matter and an inorganic pigment into one body, and a ratio of the inorganic pigment against a total amount of the amino resin cured matter and inorganic pigment is in a range of from about 1 to 30% by weight.

摘要翻译： 提供有色树脂的球形细颗粒。 细颗粒为球形，耐热性，耐溶剂性和耐化学性优异，耐久性和着色性能充分满足，在工业上具有优势。 着色树脂的球状微粒通过将氨基树脂固化物和无机颜料并入一体而制成，无机颜料与氨基树脂固化物和无机颜料的总量的比例在 约1〜30重量％。