NOPR Collection:

Synthesis and dyeing characteristics of ethyl 1-(2-acetamido-3-cyano-5-carbethoxythiophen-4-yl)glyoxalate-(aryl) hydrazones

Sun, 01 Mar 1992 00:00:00 GMT

Title: Synthesis and dyeing characteristics of ethyl 1-(2-acetamido-3-cyano-5-carbethoxythiophen-4-yl)glyoxalate-(aryl) hydrazones Authors: Sabnis, R W; Rangnekar, D W Abstract: Five monoazo disperse dyes, ethyl 1-(2-acetamido-3-cyano-5-carbethoxythiophen-4-yl)glyoxalate-(aryl)hydrazones, were prepared and their dyeing performance on polyester fibres was assessed. The dyeings on polyester had orange red and bright red shades with low pickup, moderate light fastness and good sublimation fastness. Page(s): 62-64

Synthesis of 2-azobenzo[b]thiophenes and their application on polyester fibres as disperse dyes

Sun, 01 Mar 1992 00:00:00 GMT

Title: Synthesis of 2-azobenzo[b]thiophenes and their application on polyester fibres as disperse dyes Authors: Sabnis, R W; Rangnekar, D W Abstract: Seven monoazo disperse dyes, 2-(hetaryl or aryl]azo- 4,5,6, 7-tetrahydrobenzo[b]thiophene-3-carboxamides, were prepared and their dyeing performance on polyester fibres was assessed. The dyeings on polyester had golden yellow, orange, red, pink, violet and blue shades with good pick-up and good to excellent light fastness and sublimation fastness. Page(s): 58-61

Evaluation of potential insect repellents as insectproofing agents for wool fabrics

Sun, 01 Mar 1992 00:00:00 GMT

Title: Evaluation of potential insect repellents as insectproofing agents for wool fabrics Authors: Prasad, Rameshwar; Veer, Vijay; Rao, K M Abstract: Three insect repellents, viz. N,N-diethylphenylacetamide (DEPA), N,N-diethyl-m-toluamide (DEET) and dimethylphthalate (DMP) have been evaluated against the larvae of Anthrenus flavipes LeConte (the furniture carpet beetle) and Tinea translucens Meyrick (the case making clothes-moth) through impregnation of wool fabric. Of these, only DEPA at 5% owf (effective conc., 1.45% owf) provides protection to the fabric from larval feeding of textile pests. Page(s): 56-57

Fluorescence and reflectance of Indian wools at 45°

Sun, 01 Mar 1992 00:00:00 GMT

Title: Fluorescence and reflectance of Indian wools at 45° Authors: Parthasarathy, S; Chopra, S K; Gupta, D C; Surya, A K Abstract: The fluorescence and reflectance of Magra, Marwari and Nali wool bundles were studied at 45° using a photovolt multiplier fluorescence meter (model 540, New York). Fluorescence was measured by exciting the wool at 365, 405 and 436 nm with the help of suitable primary filters. The emissions were recorded using secondary filters for 450, 470 and 510 nm. Nali scored higher values for the first fluorescence at the lowest excitation wavelength. Magra and Marwari showed higher values for the two fluorescences recorded at higher wavelengths. Statistical analysis indicated that the three breeds differed significantly among themselves in the first and third fluorescence. In Magra and Nali, the transmittance values increased with the wool weight. Reflectance was recorded by removing both the primary and secondary filters and allowing the entire spectra of the source fall on the samples. Magra and Marwari wools did not differ among themselves but scored higher transmittance values than Nali. Page(s): 54-55