sumithrin as a dyebath mothproofer

sumithrin is an insecticide used in homes as a fabric protectant. studies were conducted to determine the mothproofing effectiveness of the synthetic pyrethroid insecticide sumithrin when applied under the conditions of an acid dyebath. when applied at 100 c and ph 4. 5 for a treating period of 60 minutes, sumithrin was an effective mothp..

silk finishing - the revival of an old art

the finishing of silk is a relatively 'old art', but experts in this field among the young generation are a rarity. this article reports on the peculiarities and special requirements that finishing of this fiber involves, bearing in mind that for reasons of economy, the manufacturers of dyestuffs and auxiliaries unfortunately only have a ..

decoloring waste water with ozone in a filter with a floating media

the possibility is investigated of using in a single device a media of polystyrene foam modified with mno//2 to decolor and simultaneously remove suspended solids from dyeing-finishing plant waste water. it is shown that coating the polystyrene foam with mno//2 catalyzes the process, increasing the ozone absorption to 100. optimal paramet..

recent developments in textile dyeing

the objects of the development of improved systems of the application of dyes are considered to include the production of improvements in the dyed substrate with regard to leveling, penetration, hue and fastness, reproducibility, reduction in redyes and cost savings in energy, water, processing time, labor and materials - all of which are..

thermal study of dyed chrome-treated keratin fibres

dta, tg and tma were used to study wool samples of 64 quality, dyed and chromed in a dyeing bath at a low temperature (353 k), as well as by the conventional method involving boiling (369 k). the tma data allowed establishment of the basic temperatures connected with the $alpha$ $minus$ $beta$ transition of the wool keratin, the melting o..

colour-difference ellipsoids for five cie colour centres

following the cie guidelines for coordinated research on colour-difference evaluation, sets of dyed wool samples were produced near each of the five cie reference colours, the colour differences within each set ranging from 1 to 9 cie-lab units. ratio assessments were used to determine discrimination ellipsoids for illuminants d//6//5 and..

effects of infiltration on chemical transport into overland flow

the effect of raindrop impact and infiltration on the mixing process between surface runoff and tracer dye is a saturated porous medium (ottawa sand) was studied in the laboratory. experiments were conducted in a tilting plexiglass flume 10 cm wide, 200 cm long, and 30 cm deep. infiltration and rainfall rate and energy could be closely co..

continuous process of dye removal from liquid effluents using carbonised wool waste

industrial dyeworks are often conspicuous due to discoloration of rivers and streams into which they discharge waste materials. the adsorption process presented for the treatment of such effluent makes use of woll-carbonising waste made up of carbonised keratinic fibres and a hydrolysed vegetable material rich in ionic groups. this agro-i..

laser-induced fluorescence and optical reflection spectra of japanese natural dyes on silk

fluorescence spectra under nitrogen-laser excitation were measured for silk cloth dyed with japanese natural dyes. an identification of the dyes on silk was carried out using a laser-induced fluorescence (lif) technique since dyed cloth has a characteristic fluorescence spectra. moreover, it is possible to identify dyes on faded cloth and..

application of distributed control to batch/kamyr digester operation

in 1981, james river corporation converted twenty year old instrumentation on six batch and one kamyr digester to modern digital distributed control. two geographically separated control rooms were combined and located next to existing washer and bleaching control rooms to achieve centralized control of pulp mill operations. crt based reg..