THREAD MADE FROM POLY(VINYLIDENE SULFIDE), KNITTED MESH AND A METHOD FOR MANUFACTURE THEREOF Russian patent published in 2006 - IPC D01F11/04 C08J7/12 D06M11/38 D04G1/04 A61F2/02 B01D39/08 D01F6/12 

FIELD: polymer materials.

SUBSTANCE: invention relates to technology of fabrication and modification of man-made fibers and threads, in particular poly(vinylidene sulfide) threads, and can be used in chemical industry for manufacture of filter materials and in medicine as novel surgical threads and implants (endoprostheses) showing biological activity and thrombosis resistance. Thread made from poly(vinylidene sulfide) with carbine coating has diameter 0.10-0.15 mm, linear density from 13.81 to 31.09 tex, knot strength 621-640 MPa, and rupture strength 632-648 MPa. Knitted mesh is made from monofilament poly(vinylidene sulfide) thread and its structure is characterized by density 12-13 courses per 1 cm and contains loops from two thread systems with first system parameters: 6/7, 3/2, 4,5, 1/0, 3/2 and second system parameters: 1/0, 2/3, 1,0, 2/3, 1/0, 2/3. Method of manufacturing knitted mesh comprises making indicated knitted material from indicated thread with density 12-13 course/cm and two indicated thread systems, impregnating the mesh with dimethylsulfoxide or dimethylformamide during 1-4 h, and treating it with 15-17% n-butanol or n-propanol solution of potassium hydroxide. Optimal treatment time is 0.5 to 4 h.

EFFECT: improved physico-mechanical characteristics of articles, to which such properties as chemical stability, thrombosis resistance, biocompatibility, catalytic activity are imparted.

4 cl, 1 tbl, 48 ex