TH47897A - Process for fabricating aromatic long fibers Metha type polyamide - Google Patents

Abstract

DC60 (02/02/44) This invention involves the production of aromatic long fibers. Good quality methanol based polymers from the polymer solution of aromatic polyamide methanol. Produced by the method of birth High efficiency solution polymers (1) The aromatic polyamide methas was prepared by processing. Polymerization reaction Of aromatic diamine, metha type with aromatic dicarboxylic acid chloride, metha type in polar organic solvent (2) hydrogen chloride with are In the resulting polymer solution is neutralized the solution. Neutralized Containing alkaline metal hydroxides that can react with hydrogen chloride to make their salts. Insoluble in solvents. Polymerization. (3) Salts that accumulate on polymer solutions. It is removed by filtration. (4) The resulting polymer solution is mixed with water. And polar amide organic solvent for preparation of agitation solution. (5) Aromatic spinning solution Metha type polyamide Will be extruded directly In the form of a fiber stream Longitudinal into the liquid. For the integration of the fiber stream The extruded lengths of the polymer solution to form long fibers (6) the coalescent fibers are immersed in water. To remove salt and solvent from long fibers (7) washed long fibers With water it is rolled and heated.This invention involves the production of aromatic long fibers. Good quality methanol based polymers from the polymer solution of aromatic polyamide methanol. Produced by the method of birth High efficiency solution polymers (1) The aromatic polyamide methas was prepared by processing. Polymerization reaction Of aromatic diamine, metha type with aromatic dicarboxylic acid chloride, metha type in polar organic solvent (2) hydrogen chloride with are In the resulting polymer solution is neutralized the solution. Neutralized Containing alkaline metal hydroxides that can react with hydrogen chloride to make their salts. Insoluble in solvents. Polymerization. (3) Salts that accumulate on polymer solutions. (4) The resulting polymer solution is mixed with water and polar solvent organic solvent to form a agitating solution. (5) Aromatic agitation solution. Metha type polyamide Will be extruded directly In the form of a fiber stream Longitudinal into the liquid. For the integration of the fiber stream The extruded lengths of the polymer solution to form long fibers (6) the coalescent fibers are immersed in water. To remove salt and solvent from long fibers (7) washed long fibers With water it is rolled and heated.

Claims (1)

1.process to produce aromatic long fibers Metha type polyamide By preparation Dissolve aromatic polymers Liameth type By birth method Aqueous polymers and Production of aromatic long fibers Metha-type polyamide from a polymer solution whose process consists of a sequence of steps (1) to (7) of: (1) polymerization step. Where the methanol-type aromatic polyamide is prepared by The aromatic reaction was Amines of metha and aromatics Dicarboxylic Metha chloride in the digestive agent: