公开(公告)号：US4895929A

公开(公告)日：1990-01-23

申请号：US066295

申请日：1987-06-25

申请人： Katsuhiro Abe ,  Kazunori Yano ,  Ryuhei Matsui ,  Shigeki Kiriyama ,  Yoshiharu Tatsukami ,  Kenji Nagaoka

发明人： Katsuhiro Abe ,  Kazunori Yano ,  Ryuhei Matsui ,  Shigeki Kiriyama ,  Yoshiharu Tatsukami ,  Kenji Nagaoka

IPC分类号： C08G65/38 ,  C08G65/44 ,  C08G65/46 ,  C08J3/12

CPC分类号： C08J3/12 ,  C08G65/44 ,  C08G65/46 ,  C08J2371/12

摘要： A process for producing a polyphenylene ether is disclosed, comprising oxidatively polymerizing a phenol in an organic solvent in the presence of a catalyst for oxidative polymerization, finely dispersing the resulting polyphenylene ether containing the organic solvent in an aqueous dispersion medium containing an acid compound, and heating the aqueous dispersion to remove the solvent from the polyphenylene ether. The resulting polyphenylene ether has excellent powder properties and contains a reduced amount of a catalyst residue.

公开(公告)号：US4320041A

公开(公告)日：1982-03-16

申请号：US160791

申请日：1980-06-19

申请人： Katsuhiro Abe ,  Mitsuo Tsuruoka ,  Shigeki Kiriyama ,  Kazunobu Nakamori

发明人： Katsuhiro Abe ,  Mitsuo Tsuruoka ,  Shigeki Kiriyama ,  Kazunobu Nakamori

IPC分类号： B29B7/00 ,  B29B7/48 ,  B29B7/94 ,  B29C47/00 ,  B29C47/10 ,  B29C47/40 ,  B29C47/76 ,  B29C47/80 ,  B29K23/00 ,  C08J3/02 ,  C08J3/05 ,  C08J3/20 ,  C09D123/02 ,  C08L29/04

CPC分类号： C08J3/05 ,  B29C47/0009 ,  B29C47/76 ,  C09D123/02 ,  C08J2323/02

摘要： Aqueous dispersions of olefin resins having a low film-forming temperature can be continuously produced by homogeneously mixing a mixture composed of olefin resin, partially saponified polyvinyl alcohol and water by means of an extruder having a multi-screw, and extruding the resulting dispersion.If partially saponified polyvinyl alcohol in which residual acetic acid groups are blocked is used, the film-forming temperature thereof is effectively lowered.

摘要翻译： 通过利用具有多螺杆的挤出机将由烯烃树脂，部分皂化的聚乙烯醇和水组成的混合物均匀混合，并挤出所得到的分散体，可以连续生产具有低成膜温度的烯烃树脂的水分散体。 如果使用其中残留乙酸基团被封闭的部分皂化的聚乙烯醇，则其成膜温度有效降低。