Compositions: coating or plastic – Coating or plastic compositions – Contains fireproofing or biocidal agent
Patent
1973-10-24
1976-03-30
Morris, Theodore
Compositions: coating or plastic
Coating or plastic compositions
Contains fireproofing or biocidal agent
106168, 8181, C08L 124, C09D 518
Patent
active
039472760
ABSTRACT:
A method is disclosed for producing cellulosic and/or polynosic fibres hag 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.
REFERENCES:
patent: 2345345 (1944-03-01), Koch
patent: 2768997 (1956-10-01), Reeves
patent: 2809941 (1957-10-01), Reeves et al.
patent: 3645936 (1972-02-01), Gardner
patent: 3704144 (1972-11-01), Toy et al.
Rossi Pietro Paolo
Siclari Francesco
Morris Theodore
Snia Viscosa Societa' Nazionale Industria Applicazioni Viscosa S
LandOfFree
Method for the production of cellulose-based fibres and polynosi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for the production of cellulose-based fibres and polynosi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the production of cellulose-based fibres and polynosi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-519088