The Search for Effective New Dyes for Chemical Fibres

Promising new approaches to manufacture of dyes for chemical fibres based on colored compounds of natural origin and products of chemical modification of trinitrotoluene (Trotil) and trinitrobenzene are demonstrated. Synthesis of dyes that protect textile materials from biodamage based on incorporation of pharmacophoric groups in the molecule is described.__________Translated from Khimicheskie Volokna, No. 2, pp. 5–9, March–April, 2005.     

Methyl phloroglucinol-based dyes for chemical fibres

The results obtained indicate the promise of using MPG as the azo constituent for fabrication of azo dyes of different structure that can be used to dye polycaproamide and polyester fabrics in the yellow, brown, and claret range and ensure high resistance of the color to physicochemical effects. __________ Translated from Khimicheskie Volokna, No. 3, pp. 8–10, May–June, 2006.     

Nanomodified textile materials with biocidal properties: Development and pilot testing of manufacturing technology

Theoretical Foundations of Chemical Engineering - The results of a study aimed at developing a method and technology for modifying textile materials with nanosized silver particles have been...     

Methylphloroglucinol as an available semiproduct for azo dye synthesis

A technologically convenient method is suggested for the high-yield synthesis of 2,4,6-trihydroxytoluene (methylphloroglucinol) from 2,4,6-trinitrotoluene. A number of structurally different azo dyes have been synthesized. The dyes are applicable to various textiles, ensuring high colorfastness to laundering and rubbing.     

New aroyleneimidazoles as dyes for thermoplastic polymeric materials

New perinone dyes for bulk dyeing synthetic polymers were synthesized. The synthesized dyes are characterized by high thermal stability. The possibility of dyeing Macrolon 28/08 polycarbonate with some of the synthesized dyes was investigated. It was shown that the dyes were uniformly distributed in the bulk of the polymer. It was found that incorporation of a perinone dye containing a pyridine radical in the polycarbonate during formation increases the glass transition temperature, decreases thermooxidative degradation of the polymer, and yields films with elevated physicomechanical indexes. __________ Translated from Khimicheskie Volokna, No. 3, pp. 5–8, May–June, 2006.     

Thermal Stabilization of Polycaproamide Composites Containing Flame Retardants

It was found that the degree of polymerization in heating PCA containing 10% TS-1 thermostabilizer varies to a smaller degree than for the initial polymer and polymer containing Stabilin. This is confirmed by the results of determining the content of terminal amino groups and melt flow index after prolonged heating of the composites. The effect of the thermostabilizers on thermooxidative degradation of PCA composites containing aminotrismethylenephosphonic acid ammonium salt as flame retardant was studied. It was shown that incorporation of TS-1 together with AMP AS to PCA increases the thermal stability of the composites. TS-1 stabilizer is recommended for treatment of PCA in the presence of flame retardants to obtain a polymer with high performance properties.     

Protection of textile materials made of different types of fibres from biodeterioration with special dyes

A direct correlation was found between the biological activity of the starting heteryl-containing azo components, azo compounds based on them, and samples dyed with them. With a high proportion of probability, it is possible to note that incorporation of 3,5-dichloropyridyl radical in the molecule of an azo compound causes the appearance of fungicidal activity in the compound. It was found that the biocidal properties of these dyes are a function of the structure of the compound to a greater degree (presence of a concrete heteryl fragment) than of the method of attaching the dye to the fibre. Moscow State Textile Academy; State Scientific-Research Institute of Renovation. Translated fromKhimicheskie Volokna, No. 4, pp. 38–40. July–August, 1999.     

Characteristics of the Macromolecular Reaction of the Graft Copolymer of Polyvinyl Alcohol and Polyglycidyl Methacrylate with Hydroxyethylamine

The kinetics of the macromolecular reaction of amination of PVA—PGMA graft copolymer is quantitatively described. The initial rate of the process, order of the reaction rate in amine, and effective activation energy are determined. The effect of the nature of the polymer matrix on the kinetic parameters of conversion of graft PGMA -oxide groups under the effect of hydroxyethylamine is established.