公开(公告)号：US20210139390A1

公开(公告)日：2021-05-13

申请号：US17257199

申请日：2019-06-28

申请人： UNITIKA LTD.

发明人： Yumeto FUKUBAYASHI ,  Makoto NAKAI ,  Ayumi YANAKA

IPC分类号： C07B61/00 ,  C07C233/77 ,  C07C233/81 ,  C08G63/78

摘要： The present invention provides a production method of an organic compound, in which a reaction is performed between functional groups without using any solvents. The present invention relates to a production method of an organic compound, in which a reaction is performed between functional groups by using a mechanochemical effect.

公开(公告)号：US20230331987A1

公开(公告)日：2023-10-19

申请号：US18021689

申请日：2021-09-13

申请人： UNITIKA LTD.

发明人： Yusuke YAGI ,  Ami HIROTA ,  Makoto NAKAI ,  Takeshi MARUO ,  Naoki TAKAISHI

IPC分类号： C08L77/10 ,  C08G69/26

CPC分类号： C08L77/10 ,  C08G69/265 ,  C08L2203/16 ,  C08L2201/08

摘要： The present invention provides a polyamide and a polyamide film which are more sufficiently superior in all of heat-resisting properties, flexibility properties and rubber elastic properties. The present invention relates to a polyamide comprising a unit comprised of an aliphatic dicarboxylic acid (A) having 18 or more carbon atoms, a unit comprised of an aliphatic diamine (B) having 18 or more carbon atoms, a unit comprised of an aromatic dicarboxylic acid (C) having 12 or less carbon atoms and a unit comprised of an aliphatic diamine (D) having 12 or less carbon atoms, wherein the polyamide has a melting point of 240° C. or more, a crystalline melting enthalpy of 20 J/g or more and an elongation recovery rate of 50% or more in a hysteresis test, and a polyamide film comprising the polyamide.

公开(公告)号：US20180086704A1

公开(公告)日：2018-03-29

申请号：US15564667

申请日：2016-04-06

申请人： UNITIKA LTD.

发明人： Yumeto FUKUBAYASHI ,  Makoto NAKAI ,  Akira SHIGETA ,  Munenori YAMADA

IPC分类号： C07D209/48 ,  C07D403/10 ,  C07B43/06 ,  B01J19/00

CPC分类号： C07D209/48 ,  B01J19/0013 ,  C07B43/06 ,  C07D403/10

摘要： An object of the present invention is to provide an industrially advantageous method for producing a bisimide dicarboxylic acid, which uses substantially no solvent and requires no granulation after completion of the reaction.The above object can be achieved by a method for producing a bisimide dicarboxylic acid with a tricarboxylic acid anhydride and a diamine, including the following processes (i) and (ii): a process (i) in which, provided that a compound having a higher melting point is a high melting compound and a compound having a lower melting point is a low melting compound, when a melting point is compared between the tricarboxylic acid anhydride and the diamine, the high melting compound is heated at a temperature between less than the melting point of the high melting compound and not lower than the melting point of the low melting compound, and the low melting compound is added to the high melting compound while the high melting compound maintains its solid states, to give a mixture; and a process (ii) in which the resultant mixture in the process (i) is heated while its solid states are kept, to give bisimide dicarboxylic acid.

公开(公告)号：US20180072848A1

公开(公告)日：2018-03-15

申请号：US15564678

申请日：2016-04-06

申请人： UNITIKA LTD.

发明人： Yumeto FUKUBAYASHI ,  Makoto NAKAI ,  Akira SHIGETA ,  Munenori YAMADA

IPC分类号： C08G73/14

摘要： The present invention is to provide a polyamide-imide which has a high regularity of molecular structure and few branched structures, does not contain hydrogen halide, is not required to be separated and purified in post processes, and can be suitably used as a film, a varnish, or a molding material; raw material salt of polyamide-imide and production method thereof.The polyamide-imide has a repeating unit represented by the general formula (1): in which R1, R2 represent independently a divalent residue having an aromatic ring, an aliphatic ring or an aliphatic hydrocarbon; R3, R4 represent independently a trivalent residue having an aromatic ring or an aliphatic ring; and an hydrogen atom bonding to the respective rings may be replaced by another atom or an atomic group.