A non-caking, non-tacky and free-flowing particulate bleaching detergent composition includes a synthetic organic nonionic detergent, such as a polyethoxylated higher fatty alcohol or alkylphenol, a builder for the nonionic detergent, such as sodium tripolyphosphate, sodium silicate, sodium carbonate...http://www.google.com.au/patents/US4741851?utm_source=gb-gplus-sharePatent US4741851 - Non-caking bleaching detergent composition containing a lower hydrate of sodium perborate
