NOPR Collection:

Synthesis and dyeing characteristics of new 2-methyl-3-arylazo-6-phenyl-7- amino- and 7-acetamido-pyrazolo- [1,5-a]pyrimidines

2016-07-20T06:39:27Z

Title: Synthesis and dyeing characteristics of new 2-methyl-3-arylazo-6-phenyl-7- amino- and 7-acetamido-pyrazolo- [1,5-a]pyrimidines Authors: Rangnekar, D W; Puro, S S Abstract: Six monoazo disperse dyes, 2-methyl-3-arylazo-6-phenyl-7-amino- and 7-acetamido-pyrazolo[1,5-a]pyrimidines, were prepared by the condensation of 3-methyl-4- arylazo-5-aminopyrazoles and phenylcyanoacetaldehyde and subsequent acetylation. The dyeing performance of these dyes on polyester was also assessed. The dyeings on polyester had deep yellow shades with excellent pick-up, moderate light fastness and good sublimation fastness. Page(s): 37-38

Evaluation of suitable cooking recipe for oak tasar cocoons

2016-07-20T06:39:18Z

Title: Evaluation of suitable cooking recipe for oak tasar cocoons Authors: Manna, S S; Tikoo, B L Abstract: Two cooking recipes, one of 1.40% soda plus 0.60% Pears glycerin soap and the other of 1% soda (conventional, taken as control) were tested on oak tasar cocoons with respect to yield/1000 cocoons, reelability and production/ 8h/reeler and it was observed that the former not only gave higher values of the parameters but also required lower cost of production over the latter. Page(s): 35-36

Influence of fibre breakage and sliver cleanliness on open-end yarn properties

2016-07-20T06:34:31Z

Title: Influence of fibre breakage and sliver cleanliness on open-end yarn properties Authors: Bhatnagar, Sunil Abstract: Slivers prepared by double carding technique give less fibre breakage at rotor and thus better yarn properties as compared to slivers prepared by other techniques. Page(s): 33-34

Influence of process parameters on the characteristics of nylon-viscose core-spun plied yarns

2016-07-20T06:37:30Z

Title: Influence of process parameters on the characteristics of nylon-viscose core-spun plied yarns Authors: Kaushik, R C D; Tyagi, G K; Salhotra, K R Abstract: The plying of core-spun yarns leads to a significant improvement in tenacity and breaking extension. The increase in the tenacity of Z/Z ply yarns is more sensitive to the change in doubling ratio than the increase in the tenacity of corresponding Z/S ply yarns; the former, however, decreases with increase in doubling ratio. Diameter of Z/Z ply yarns is much less and it decreases with an increase in doubling ratio. Page(s): 30-32