ANTI-DANDRUFF COMPOSITIONS AND HAIR CARE FORMULATIONS CONTAINING ZINC PYRITHIONE AND QUATERNARY AMMONIUM SALT

摘要

The present invention discloses a stable biocidal composition with enhanced antifungal activity at low concentration of active (s) and a process for preparing the same. The composition comprises: zinc pyrithione, C8-C18 quaternary ammonium salt (preferably cetylpyridinium chloride), water miscible glycol/polyol/glycol ether/lactam, organic amine and/or alkanol amine. The composition can be formulated into: hair care formulations, antidandruff hair care formulations, water based paints, coatings, adhesives, hard surface cleaners, fabric care compositions, wood products, plastic products and medical products. The biocidal compositions and the resulting formulations are transparent or opaque and are stable at varying pH and humidity conditions.

主权项

1. A transparent, stable biocidal composition, said composition comprising:
(i) 0.5-35% w/w of zinc pyrithione, (ii) 0-20% w/w of C8-C18 quaternary ammonium salt, (iii) 0.5-20% w/w organic amines and/or alkanol amine, (iv) 0.5-60% w/w water soluble glycol/polyol/glycol ether/lactam or mixtures thereof, (v) 0-10% w/w of a dispersant and/or a rheology modifier and/or a suspending agent, and (vi) 0-60% w/w of water.