18—NON-CROSS-LINKING CATIONIC POLYMERS FOR THE SHRINK-RESIST TREATMENT OF WOOL

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Abstract
Several non-cross-linking cationic polymers have been found to improve the shrink-resistance of chlorinated wool. The polymers, applied by exhaustion from neutral to alkaline liquors, do not require a curing operation. Three polymers in particular, poly(vinylbenzyltrimethyl ammonium chloride), a butyl methacrylate–trimethylammoniumethyl methacrylate copolymer, and an octyl methacrylate–trimethylammoniumethyl methacrylate copolymer, were more effective, at low treatment levels, than Hercosett 125, currently used in commercial processes. Cross-staining by dyes during laundering of fabric treated with the methacrylate copolymer was less than with fabric treated with the same level of Hercosett 125.