公开(公告)号：US4842927A

公开(公告)日：1989-06-27

申请号：US198867

申请日：1988-05-26

申请人： Kiichi Itoh ,  Takeshi Shibano

发明人： Kiichi Itoh ,  Takeshi Shibano

IPC分类号： C08J7/16 ,  A61F13/49 ,  A61F13/53 ,  C08F2/00 ,  C08F2/44 ,  C08F26/06 ,  C08F220/04 ,  C08F220/06 ,  C08F226/06 ,  C08F289/00 ,  C08F291/00 ,  D06M13/02 ,  D06M13/224 ,  D06M13/228 ,  D06M14/00 ,  D06M14/04 ,  D06M14/14 ,  D06M15/263 ,  D06M101/00 ,  D06M101/02 ,  D06M101/06 ,  D06M101/08 ,  D06M101/16 ,  D06M101/30 ,  D06M101/32

CPC分类号： D06M14/14 ,  D06M14/04 ,  Y10T428/31895 ,  Y10T428/31906 ,  Y10T442/3325 ,  Y10T442/469 ,  Y10T442/647

摘要： A process for preparing a water absorptive composite consisting of a highly water absorptive polymer and a prefabricated fibrous substrate, which comprises applying an aqueous solution containing (a) a polymerizable monomer comprising as a main component acrylic acid, of which 20% or more of the carboxyl groups have been neutralized to its alkali metal salt or ammonium salt, (b) 2-vinylpyridine or(and) 4-vinylpyridine or(and) their salts, (c) a crosslinking agent and (d) an oxidative radical polymerization initiator to a prefabricated fibrous substrate, and then carrying out polymerization with addition of a reducing agent.

公开(公告)号：US4365087A

公开(公告)日：1982-12-21

申请号：US116445

申请日：1980-01-29

申请人： Koju Kadowaki ,  Kohei Sarumaru ,  Takeshi Shibano

发明人： Koju Kadowaki ,  Kohei Sarumaru ,  Takeshi Shibano

IPC分类号： B01J23/00 ,  C07B61/00 ,  C07C45/35 ,  C07C51/00 ,  C07C51/25 ,  C07C57/05 ,  C07C67/00 ,  C07C57/04 ,  C07C57/055

CPC分类号： C07C45/35 ,  C07C51/252 ,  B01J2523/00

摘要： In the production of acrylic acid by a two-stage, vapor-phase catalytic oxidation of propylene, a composite oxide catalyst expressed by the formula Mo.sub.a Bi.sub.b Ni.sub.c Co.sub.d Fe.sub.e Na.sub.f Mn.sub.g B.sub.h K.sub.i Si.sub.j O.sub.x is used in the first-stage reaction, which is carried out under specific reaction and operational conditions, and the second-stage reaction is carried under specific reaction and operational conditions while oxygen is supplied by a specific mode.

摘要翻译： 在通过丙烯的两阶段气相催化氧化生产丙烯酸的过程中，在特定反应和操作条件下进行的第一阶段反应中使用由式MoaBibNicCodFeeNafMngBhKiSijOx表示的复合氧化物催化剂， 第二阶段反应在特定反应和操作条件下进行，同时通过特定模式供给氧气。