AROMATIC POLYAMIDE FILM
    9.
    发明专利

    公开(公告)号:JPS5842649A

    公开(公告)日:1983-03-12

    申请号:JP14034581

    申请日:1981-09-08

    Abstract: PURPOSE:To provide a film which is used for a magnetic tape and hardly suffers envenomation due to copper, consisting of a reaction product between a dicarboxylic acid component and a diamine component composed of diaminodiphenylsulfone and an arom. diamine having a Cl substituent on a benzene ring. CONSTITUTION:A polymer consisting of 20-90mol% basic unit of formulaI (wherein m, n are each 0-3 with the proviso that m+n>=1), 10-80mol% copolymer unit of formula II (r is 0-3) and 0-70mol% structural unit of formula III (wherein X is O, S, CO, CH2, a group of formula IV or V; S is 0-3) is dissolved in an org. solvent, and then molded into a film by a wet process or a dry process. The film is heat-treated to obtain the titled film. Said polymer can be obtd. by subjecting terephthalyl chloride, 2-chloro-p-phenylene-diamine and 4,4- diaminodiphenyl sulfone to a solution polymn. or an interfacial polymn. EFFECT:Good heat resistance, solubility and hygroscopicity.

    AROMATIC POLYAMIDE FILM
    10.
    发明专利

    公开(公告)号:JPS56104937A

    公开(公告)日:1981-08-21

    申请号:JP774080

    申请日:1980-01-28

    Abstract: PURPOSE:To obtain the titled film with high rigidity and thermal shrinkage, capable of being easily prepared, which is composed of a polymer containing a basic component unit obtained from an acid chloride such as terephthalic acid chloride, and a diamine, and a specified copolymer unit. CONSTITUTION:An polyamide of intrinsic viscosity 0.5-6, containing 50-60% of a basic component unit of formula I (wherein m and n are 0-3 and m+n>=1), obtained from an acid component such as terephthalic acid chloride, and an amine component such as p-phenylenediamine; and 50-40% of at least one component unit such as formula II, III or IV (wherein X is O, S, SO2, CH2, etc.), is prepared. The titled film, containing a residual ionic inorganic compound in an amount

Patent Agency Ranking