Davidson, R. Stephen published the artcileThe efficiency of reaction between reactive fluorescent whitening agents and wool, Application In Synthesis of 18791-02-1, the publication is Journal of the Society of Dyers and Colourists (1988), 104(2), 86-93, database is CAplus.
Three potential fluorescent whitening agents (I; R = A, COCH2Cl, or COCBr:CH2) containing halogen atoms which intramol. quench fluorescence were prepared and applied to wool serge by 4 different methods to evaluate the effect of method of application on the extent to which bonds are established. The particular pad-batch method of application exerted considerable influence on the extent of covalent reaction between the wool and reactive fluorescent whitener. Complete displacement of all halogen atoms by nucleophilic groups in wool did not occur when the fluorescent whiteners were applied by cold pad-batch methods. Treatment with morpholine, Na2CO3, or water was necessary to develop the full potential fluorescence yield of whitener on the fabric. No fluorescence was observed when com. fluorescent whiteners, e.g., Photine HV and Blankophor BA, were applied to brominated wool, confirming that the presence of halogen atoms leads to fluorescence quenching via the heavy atom effect. The fluorescence of the whiteners was restored when the brominated fabrics were subjected to a reduction treatment. Application of the whiteners by exhaustion, with thiourea present in the liquor, at high temperatures always produced strongly fluorescent fabrics, implying that the halogen atoms were completely displaced using this application method. It is not yet possible to state whether reactions leading to covalent bonds with the fiber or hydrolysis are occurring.
Journal of the Society of Dyers and Colourists published new progress about 18791-02-1. 18791-02-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is 2,3-Dibromopropionylchloride, and the molecular formula is C3H3Br2ClO, Application In Synthesis of 18791-02-1.
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