Abstract
An exhaustion method to shrink-resist unchlorinated wool fabrics is described. This method uses complex coacervate dispersions prepared by mixing dilute aqueous solutions of Synthappret BAP (a poly(carbamoyl sulphonate)) and the acetate salt of Versamine 552 (a C36-diamine derived from dimerized fatty acids). The conditions for the exhaustion of the coacervate dispersions onto wool were quite critical, but the range of conditions could be extended by the addition of neutral polyacrylamide flocculants. Particle-size measurements indicated that coalescence occurred during exhaustion. The level of shrink-resistance depended on both the exhaustion conditions and the curing conditions. A simple titration method was adapted for the analysis of the cationic and anionic polymers used in this study.
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