METHOD TO PRODUCE THREADS FROM AROMATIC POLYAMIDE Russian patent published in 2010 - IPC D01F6/60 D01F6/74 D01D5/06 C08F2/01 

FIELD: process engineering.

SUBSTANCE: proposed method comprises preparing spinning solution during production of polymer consisting only of aromatic polyamide, aromatic diamine, aromatic diatomic chloride and polymerisation solution fed into reactor (20), mixing them by mixer arranged inside reactor (20). Said mixer consists of rotor (3) driven by motor (2) and comprising multiple pins (3a); and stator (4) with multiple pins (4a). Note that rotor rpm is adjusted to vary from 10-fold to 100-fold rate of feed of aromatic diatomic chloride and aromatic diamine in polymerisation solution into reactor (20). Uniform and homogeneous polymerisation are effected over the entire space of polymerisation reactor (20) that results in reduction of deviances in polymerisation degree, since polymer monomers are mixed together to produce their good interaction directly after introducing them into reactor (20). Now the solution is forced through spinnerets.

EFFECT: higher strength of thread and higher modulus.

4 cl, 2 dwg, 1 tbl, 4 ex