公开(公告)号：US5521252A

公开(公告)日：1996-05-28

申请号：US390038

申请日：1995-02-17

申请人： Kaoru Matsuda ,  Hirofumi Uno ,  Akihiro Toritani ,  Jun Nakauchi

发明人： Kaoru Matsuda ,  Hirofumi Uno ,  Akihiro Toritani ,  Jun Nakauchi

IPC分类号： C08J3/16

CPC分类号： C08J3/16 ,  C08J2333/00 ,  Y10S525/902

摘要： Acrylic multilayer polymer powders containing coagulated powders of emulsified latexes of acrylic multilayer polymers, which are suitable for drying methods using pressure dehydration extruders, etc, comprises not more than 40 wt % of a fine powder of a particle size of 212 .mu.m or less after drying, and have a volume of gaps of a pore size of 5 .mu.m or less after drying of not more than 0.7 cc per unit weight as measured by a mercurial pressure method. A desired monomer is subjected to emulsion polymerization to produce an emulsified latex of an acrylic multilayer polymer, which is then poured into a coagulating solution for coagulation.

摘要翻译： 含有适用于使用压力脱水挤出机的干燥方法的丙烯酸多层聚合物的乳化胶乳的凝固粉末的丙烯酸多层聚合物粉末包含不超过40重量％的粒径为212μm以下的细粉末， 干燥后，通过汞压法测定，干燥后的孔径为5μm以下的间隙的体积为不大于0.7cc /单位重量。 将所需的单体进行乳液聚合以产生丙烯酸多层聚合物的乳化胶乳，然后将其倒入用于凝固的凝固溶液中。

公开(公告)号：US4814157A

公开(公告)日：1989-03-21

申请号：US012494

申请日：1987-02-09

申请人： Hirofumi Uno ,  Hajime Asai ,  Fujio Nakao

发明人： Hirofumi Uno ,  Hajime Asai ,  Fujio Nakao

IPC分类号： D06M10/00 ,  D01F9/22 ,  D06M101/00 ,  D06M101/40

CPC分类号： D01F9/22

摘要： Disclosed are polyacrylonitrile carbon fibers excellent in substrate strength and adhesion to matrix resin wherein average nitrogen content in the whole carbon fibers which is measured by elementary analysis is 0.5-4.5% by weight and average nitrogen concentration (N/C atom number ratio) in the whole carbon fibers which is measured by elementary analysis and surface silicon concentration (Si.sub.2p /C.sub.1s atom number ratio), surface nitrogen concentration (N.sub.1s /C.sub.1s atom number ratio) and surface oxygen concentration (O.sub.1s /C.sub.1s atom number ratio) which are measured by X-ray photoelectron spectroscopy satisfy the following formulas:0.ltoreq.Si.sub.2p /C.sub.1s .ltoreq.0.020.67 N/C+0.08.ltoreq.O.sub.1s /C.sub.1s -2 Si.sub.2p /C.sub.1s .ltoreq.0.40.ltoreq.N.sub.1s /C.sub.1s -N/C.ltoreq.0.04and method for producing the carbon fibers.

摘要翻译： 公开了基材强度和基体树脂粘合性优异的聚丙烯腈碳纤维，其中通过元素分析测定的全碳纤维中的平均氮含量为0.5-4.5重量％，平均氮浓度（N / C原子数比） 通过元素分析和表面硅浓度（Si2p / C1s原子数比），表面氮浓度（N1s / C1s原子数比）和表面氧浓度（O1s / C1s原子数比）测量的全碳纤维，其通过X 射线光电子能谱满足下列公式：0 <= Si2p / C1s

公开(公告)号：US06310137B1

公开(公告)日：2001-10-30

申请号：US09424851

申请日：1999-12-06

申请人： Hirofumi Uno ,  Jun Nakauchi

发明人： Hirofumi Uno ,  Jun Nakauchi

IPC分类号： C08L5106

CPC分类号： C08F285/00 ,  C08F220/12

摘要： A multilayered acrylic polymer comprising an innermost layer polymer (A) formed from a C1-4 alkyl methacrylate, a C1-8 alkyl acrylate, etc., an intermediate layer polymer (B) formed from a C1-8 alkyl acrylate, an aromatic vinyl monomer, etc., and an outermost layer polymer (C) formed from a C1-4 alkyl methacrylate, a C1-8 alkyl acrylate, etc., and wherein the average value of the coating ratio, i.e. [(minimum thickness of the intermediate layer)÷(maximum thickness of the intermediate layer)]×100, is not less than 30%; and a methacrylic resin composition containing the same. This multilayered acrylic polymer can improve the falling-ball or falling-weight impact strength, resistance to impact whitening, transparency and other properties of the methacrylic resin composition.

摘要翻译： 包括由甲基丙烯酸C 1-4烷基酯，丙烯酸C 1-8烷基酯等形成的最内层聚合物（A），丙烯酸C 1-8烷基酯形成的中间层聚合物（B），芳香族乙烯基 单体等，以及由甲基丙烯酸C 1-4烷基酯，丙烯酸C 1-8烷基酯等形成的最外层聚合物（C），并且其中涂布比的平均值，即[（中间体的最小厚度 层）÷（中间层的最大厚度）]×100，不小于30％; 和含有它们的甲基丙烯酸系树脂组合物。 这种多层丙烯酸类聚合物可以改善甲基丙烯酸树脂组合物的落球或落锤冲击强度，耐冲击增白，透明度等特性。

公开(公告)号：US4839006A

公开(公告)日：1989-06-13

申请号：US199453

申请日：1988-05-27

申请人： Fujio Nakao ,  Hirofumi Uno

发明人： Fujio Nakao ,  Hirofumi Uno

IPC分类号： C25D11/34 ,  D01F11/16

CPC分类号： D01F11/16 ,  C25D11/34

摘要： A process for surface treatment of carbon fiber of which modulus is not lower than 30 ton/mm.sup.2, in two steps, which comprises the steps of subjecting a carbon fiber as an anode to a first electrolytic treatment in an aqueous solution of inorganic acidic electrolyte or of neutral salt electrolyte, and then subjecting the treated fiber to a second electrolytic treatment in an aqueous solution of ammonium salt of carbonic acid or of inorganic alkaline electrolyte.