公开(公告)号：IT1048464B

公开(公告)日：1980-11-20

申请号：IT2843475

申请日：1975-10-20

Applicant: SNIA VISCOSA

Inventor： SICLARI F ,  ROSSI P ,  DE GAETANO M

IPC: C07C20060101 ,  C07C

公开(公告)号：ZA7404452B

公开(公告)日：1975-07-30

申请号：ZA7404452

申请日：1974-07-11

Applicant: SNIA VISCOSA

Inventor： SICLARI F ,  ROSSI P

IPC: C08G69/00 ,  C07B61/00 ,  C07C51/00 ,  C07C51/34 ,  C07C51/367 ,  C07C59/147 ,  C07C59/74 ,  C07C67/00 ,  C07C227/00 ,  C07C227/06 ,  C07C227/08 ,  C07C227/16 ,  C07C229/08 ,  C07C229/30 ,  C07D323/02 ,  C08G63/06 ,  C08G69/08 ,  C08G69/14 ,  C07C

CPC classification number: C08G69/08 ,  C07C51/34 ,  C07C51/367 ,  C07C59/147 ,  C07C59/74 ,  C07C227/08 ,  C07C227/16 ,  C07D323/02 ,  C08G63/06 ,  C07C59/42

公开(公告)号：IT969954B

公开(公告)日：1974-04-10

申请号：IT3097872

申请日：1972-10-26

Applicant: SNIA VISCOSA

Inventor： ROSSI P ,  SICLARI F

IPC: C08L1/00 ,  C07F9/54 ,  D01F2/08 ,  D01F2/10 ,  D01C

Abstract: A method is disclosed for producing cellulosic and/or polynosic fibres having flame-resisting properties, the improvement consisting in the fact that a composite viscose is spun in an acidic bath, said composite viscose being obtained by the association in an aqueous solvent, of cellulose xanthate with a phosphorus and nitrogen compound, dissolved in the same aqueous solvent and capable of being converted, while cellulose is being regenerated in said acidic bath, into a state of substantial insolubility. The phosphorus and nitrogen compound is a compound obtained by reacting a phosphonium derivative with aminoacids and amines and/or ammonia. A preferred compound is tetrakis-hydroxymethylphosphonium chloride. By so doing, an efficient flame-retarding protection is obtained for the fibre without sacrificing the physical properties thereof. Critical quantities, reaction conditions and test results are reported.