公开(公告)号：US5235030A

公开(公告)日：1993-08-10

申请号：US870150

申请日：1992-04-17

申请人： Shunichi Koide

发明人： Shunichi Koide

IPC分类号： C08G69/26 ,  C08G69/32

CPC分类号： C08G69/32 ,  C08G69/265

摘要： Linear aromatic copolyamides having good processability, superior thermal stability and excellent mechanical properties are provided. They comprise 55-90 mole % of a repearing unit of ##STR1## and 45-10 mole % of a repeating unit of ##STR2## wherein R.sub.1 and R.sub.2 each is a C.sub.4-12 aliphatic alkylene.

摘要翻译： 提供了具有良好加工性，优异的热稳定性和优异的机械性能的线性芳族共聚酰胺。 它们包含55-90摩尔％的“IMAGE”的驱除单位和45-10摩尔％的重复单元“IMAGE”，其中R 1和R 2各自为C 4-12脂族亚烷基。

公开(公告)号：US5747122A

公开(公告)日：1998-05-05

申请号：US709663

申请日：1996-09-09

申请人： Norio Yamamoto ,  Takayuki Fujikawa ,  Shunichi Koide ,  Yoshiichi Suzuki

发明人： Norio Yamamoto ,  Takayuki Fujikawa ,  Shunichi Koide ,  Yoshiichi Suzuki

IPC分类号： G02F1/1337

CPC分类号： G02F1/133723 ,  Y10T428/1055

摘要： Aligning films formed on electrode plates of a liquid crystal cell containing an antiferroelectric liquid crystal are each made of a polyimide film represented by the following chemical formula: ##STR1## wherein x.sub.1 and Y.sub.1 are 4,4'-diaminoterphenyl and pyromellitic dianhydride each represented by the following chemical formulas: ##STR2##

摘要翻译： 在含有反铁电液晶的液晶单元的电极板上形成的对准膜均由以下化学式表示的聚酰亚胺膜制成：其中x1和Y1分别为4,4'-二氨基苯基和均苯四甲酸二酐，分别由 以下化学式：

公开(公告)号：US5102982A

公开(公告)日：1992-04-07

申请号：US591057

申请日：1990-10-01

申请人： Shunichi Koide

发明人： Shunichi Koide

IPC分类号： C08G69/26 ,  C08G69/32

CPC分类号： C08G69/26 ,  C08G69/32

摘要： Aromatic polyamides of the invention are polyamides comprising a recurring unit ##STR1## and a recurring unit [--NH--Ar.sub.1 --NH--] and copolyamides comprising a recurring unit ##STR2## and a recurring unit [--NH--Ar.sub.2 --NHCO--Ar.sub.3 --CO--] wherein Ar.sub.1 and Ar.sub.2 are, for example, phenylene group, naphthylene group, biphenylene group, and 4,4'-methylenediphenylene group and Ar.sub.3 is, for example, phenylene group, naphthylene group and biphenylene group in which both the bonding chains extend in the coaxial direction or in the parallel direction to axis.The aromatic polyamide of the invention has high glass transition temperature and has heat resistance, high strength, and high elasticity and besides is soluble in various solvents and is excellent in spinnability and film-formability. The aromatic polyamide is molded into fibers or films and can be utilized as electric insulating materials, laminates, varnishes, fabrics, synthetic papers, etc.

公开(公告)号：US4992619A

公开(公告)日：1991-02-12

申请号：US320008

申请日：1989-03-07

申请人： Shunichi Koide ,  Shinji Aihara ,  Hiroshi Takeshita ,  Harumasa Tanabe ,  Masami Takao ,  Hitoshi Hatakeyama

发明人： Shunichi Koide ,  Shinji Aihara ,  Hiroshi Takeshita ,  Harumasa Tanabe ,  Masami Takao ,  Hitoshi Hatakeyama

IPC分类号： C07C1/00 ,  C07C7/00 ,  C07C7/14 ,  C07C7/177 ,  C07C15/24 ,  C07C67/00

CPC分类号： C07C7/14 ,  C07C7/005 ,  C07C7/177

摘要： The invention intends to separating a methyl derivative of naphthalene (2,6-dimethyl naphthalene or 2-methyl naphthalene) from a mixture material in a high purity more than 98 weight %. The starting material is preliminarily treated at a raised temperature up to 220.degree. c. at the highest and with LHSV of 0.1-6 Hr.sup.-1 in the presence of an acid catalyst usually used for olefin polymerization. The treated material is distillated to remove the polymerized impurities and to raise the naphthalene derivative content at least up to 50 weight %. And then the obtained material is subjected to the crystallization under a pressure of 500-2500 kgf/cm.sup.2 at a temperature of 80.degree.-150.degree. C. (for 2,6-DMN) or 10.degree.-35.degree. C. (for 2-MN).