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公开(公告)号：CA1250689A
公开(公告)日：1989-02-28
申请号：CA502181
申请日：1986-02-19
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KOUNO MASAHIRO , MIZUTANI KAZUMI , OSAWA MASANORI , SHIZUKA KOHEI , TOYODA TOSHIHIRO , NAKANO HIROMI
Abstract: A polyamide and/or polyimide is prepared by using N,N'-dimethylethyleneurea or N,N'-dimethyl-propyleneurea as a solvent upon polycondensation of a polycarboxylic acid and a diisocyanate at a temperature above 100.degree.C in the presence of an alkali metal carbonate, alkali metal hydrogencarbonate, alkali metal hydroxide or an alkali metal salt of a polycarboxylic acid.
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公开(公告)号：NO961750D0
公开(公告)日：1996-04-30
申请号：NO961750
申请日：1996-04-30
Applicant: MITSUI TOATSU CHEMICALS
Inventor： SHINGU JYUNICHI , MORITA KATSUYUKI , TOYODA TOSHIHIRO , TACHIHARA SHINJI , MOTAI KOJIRO , KISHI SATORU
Abstract: A fiber-reinforced thermoplastic resin sheet is obtained in advance by forming continuous fibers into a sheet with the fibers oriented in one direction and then impregnating the fiber sheet with a thermoplastic resin. The resin sheet is successively cut into predetermined dimensions. The cut sheets so obtained are successively fed into a butting apparatus, and adjacent end faces of the cut sheets are brought into abutment against each other without any space therebetween while aligning corresponding cut end faces of the cut sheets together. The resulting cut sheet group and a continuous sheet, which is another fiber-reinforced thermoplastic resin sheet and is caused to run in a superposed relationship with the cut sheet group, are fed into a laminating section, and are caused to cling to a heating roller, whereby they are subjected to melt welding. The melt-welded cut sheet group and continuous sheet are supported and joined under pressure between nip rollers, and are then caused to cling to a cooling roller to cool and harden them. The present process provides a laminated sheet which is physically uniform without joints and has no appreciable warp.
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公开(公告)号：DE3666828D1
公开(公告)日：1989-12-14
申请号：DE3666828
申请日：1986-02-14
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KOUNO MASAHIRO , MIZUTANI KAZUMI , OSAWA MASANORI , SHIZUKA KOHEI , TOYODA TOSHIHIRO
Abstract: A polyamide and/or polyimide is prepared by using N,N'- dimethylethyleneurea or N,N'-dimethylpropyleneurea as a solvent for polycondensation of a polycarboxylic acid and a diisocyanate at a temperature above 100°C in the presence of an alkali metal carbonate, alkali metal hydrogencarbonate, alkali metal hydroxide or an alkali metal salt of a polycarboxylic acid. Where an alkali metal salt of a polycarboxylic acid is employed, the salt is preferably of an acid having the same or a similar structure to the polycarboxylic acid participating in the polycondensation reaction.
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公开(公告)号：NO961750L
公开(公告)日：1996-11-04
申请号：NO961750
申请日：1996-04-30
Applicant: MITSUI TOATSU CHEMICALS
Inventor： SHINGU JYUNICHI , MORITA KATSUYUKI , TOYODA TOSHIHIRO , TACHIHARA SHINJI , MOTAI KOJIRO , KISHI SATORU
Abstract: A fiber-reinforced thermoplastic resin sheet is obtained in advance by forming continuous fibers into a sheet with the fibers oriented in one direction and then impregnating the fiber sheet with a thermoplastic resin. The resin sheet is successively cut into predetermined dimensions. The cut sheets so obtained are successively fed into a butting apparatus, and adjacent end faces of the cut sheets are brought into abutment against each other without any space therebetween while aligning corresponding cut end faces of the cut sheets together. The resulting cut sheet group and a continuous sheet, which is another fiber-reinforced thermoplastic resin sheet and is caused to run in a superposed relationship with the cut sheet group, are fed into a laminating section, and are caused to cling to a heating roller, whereby they are subjected to melt welding. The melt-welded cut sheet group and continuous sheet are supported and joined under pressure between nip rollers, and are then caused to cling to a cooling roller to cool and harden them. The present process provides a laminated sheet which is physically uniform without joints and has no appreciable warp.
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公开(公告)号：CA1175195A
公开(公告)日：1984-09-25
申请号：CA398194
申请日：1982-03-12
Applicant: MITSUI TOATSU CHEMICALS
Inventor： TOYODA TOSHIHIRO , KAWAMATA MOTOO , OSAWA MASANORI , ITOH MASAYOSHI , MIZUTANI KAZUMI , KONO MASAHIRO
Abstract: SPECIFICATION Title of the Invention Process for the Preparation of Polyamide Compounds Disclosed is a process for the preparation of polyamide compounds by reacting at least one polycarboxylic acid with at least one diisocyanate in the presence of a catalyst comprising at least one mono-alkali metal salt of dicarboxylic acid. The polyamide compounds prepared by this process have a substantially linear configuration and a high degree of polymerization and, therefore, are suitable for the manufacture of fibers, films and molded articles.
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Patent Agency Ranking
公开(公告)号：FR2501698A1
公开(公告)日：1982-09-17
申请号：FR8204256
申请日：1982-03-12
Applicant: MITSUI TOATSU CHEMICALS
Inventor： TOYODA TOSHIHIRO , KAWAMATA MOTOO , OSAWA MASANORI , ITOH MASAYOSHI , MIZUTANI KAZUMI , KONO MASAHIRO
Abstract: Disclosed is a process for the preparation of polyamide compounds by reacting at least one polycarboxylic acid with at least one diisocyanate in the presence of a catalyst comprising at least one mono-alkali metal salt of dicarboxylic acid. The polyamide compounds prepared by this process have a substantially linear configuration and a high degree of polymerization and, therefore, are suitable for the manufacture of fibers, films and molded articles.
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公开(公告)号：NO961750A
公开(公告)日：1996-11-04
申请号：NO961750
申请日：1996-04-30
Applicant: MITSUI TOATSU CHEMICALS
Inventor： SHINGU JYUNICHI , MORITA KATSUYUKI , TOYODA TOSHIHIRO , TACHIHARA SHINJI , MOTAI KOJIRO , KISHI SATORU
CPC classification number: B29C70/504 , B29C70/202 , B32B37/08 , B32B37/1027 , B32B2305/10 , Y10T156/1077 , Y10T156/1079 , Y10T156/1084 , Y10T156/1095 , Y10T156/1098 , Y10T156/13 , Y10T156/133
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公开(公告)号：CH654844A5
公开(公告)日：1986-03-14
申请号：CH156382
申请日：1982-03-12
Applicant: MITSUI TOATSU CHEMICALS
Inventor： TOYODA TOSHIHIRO , KAWAMATA MOTOO , OSAWA MASANORI , ITOH MASAYOSHI , MIZUTANI KAZUMI , KONO MASAHIRO
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公开(公告)号：DE3208697A1
公开(公告)日：1982-10-07
申请号：DE3208697
申请日：1982-03-11
Applicant: MITSUI TOATSU CHEMICALS
Inventor： TOYODA TOSHIHIRO , KAWAMATA MOTOO , OSAWA MASANORI , ITOH MASAYOSHI , MIZUTANI KAZUMI , KONO MASAHIRO
Abstract: Disclosed is a process for the preparation of polyamide compounds by reacting at least one polycarboxylic acid with at least one diisocyanate in the presence of a catalyst comprising at least one mono-alkali metal salt of dicarboxylic acid. The polyamide compounds prepared by this process have a substantially linear configuration and a high degree of polymerization and, therefore, are suitable for the manufacture of fibers, films and molded articles.
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公开(公告)号：IT8220148D0
公开(公告)日：1982-03-12
申请号：IT2014882
申请日：1982-03-12
Applicant: MITSUI TOATSU CHEMICALS
Inventor： TOYODA TOSHIHIRO , KAWAMATA MOTOO , OSAWA MASANORI , ITOH MASAYOSHI , MIZUTANI KAZUMI , KONO MASAHIRO
Abstract: Disclosed is a process for the preparation of polyamide compounds by reacting at least one polycarboxylic acid with at least one diisocyanate in the presence of a catalyst comprising at least one mono-alkali metal salt of dicarboxylic acid. The polyamide compounds prepared by this process have a substantially linear configuration and a high degree of polymerization and, therefore, are suitable for the manufacture of fibers, films and molded articles.
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