COMPARISON OF NEW SYNTHETIC PYRETHROIDS FOR THE INDUSTRIAL INSECTPROOFING OF WOOL

An investigation is reported in which five new synthetic pyretisroids were evaluated in the laboratory for their effectiveness as durable insectproofing agents for wool. Their dyebath-exhaus- tion behaviour was examined under four sets of conditions. The fastness of the treatments to washing, dry-cleaning, and light was assessed by chemical analysis and assay against insects. Four or the compounds studied, WL-43479 (perniethrin 40:60 cis:trans), NRDCM43 (permethrin 25:75 eburmis), S-3206 (fenproparmte), and S-5602 (fcnvalerate), showed sufficient promise to warrant further investigation of their nse as industrial insectproofing agents. © The Textile Institute and Contributors, 1979.