Particle composition, useful as a disintergrating agent in compact, particulate wash- and cleaning agents, contains cross-linked polyvinylprrolidone having a specified particle size distribution

摘要

A particle composition (I) contains particles of cross-linked polyvinylprrolidone having a particle size distribution in which as greater than 10 wt.% of particles have a particle size of less than 63 mu m, 0.1-30 wt.% of particles have a particle size greater than 1000 mu m and at least 10 wt.% of particles have a particle size of less than 200 mu m. Independent claims are included for: (i) a compact particulate wash and cleaning agent (II) containing 0.5-20 wt.% of the particle composition (I); (ii) a process for the production of the cleaning agent (II) by mixing 0.5-20 wt.% of the particle composition (I) with the other powdered ingredients; (iii) a process for the production of the particle composition (I) by means of popcorn polymerization by polymerization of a reaction mixture comprising N-vinylpyrrolidone and cross-linking agent in the absence of oxygen and polymerization initiators at upto 200 deg C in substance or using water as a precipitation agent and the particle size the popcorn polymer is controlled by introduction of an inert gas stream into the reaction mixture.