Patents Assigned to Tamara Kurmangazievna Musina
  • Process for producing polyimide fiber
    Patent number: 5716567
    Abstract: A process for the production of polyimide fibers includes having the fiber spun from a fully aromatic polyamide acid solution in an aprotic amide solvent in an aqueous-organic bath and subjected to plasticization drafting. It is washed until a 2-4 wt. % content of the organic solvent per fiber is attained and treated with organic or inorganic acids until a 0.5-1.0 wt. % content thereof per fiber is attained. Thereafter, fibers are dried and heat-treated.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: February 10, 1998
    Assignee: Tamara Kurmangazievna Musina
    Inventors: Tamara Kurmangazievna Musina, Zinaida Grigorievna Oprits, Alexandr Mikhailovich Schetinin, Alexandr Ivanovich Andriashin, Ruslan Rustemovich Musin