초록

Strong, stable, free-flowing agglomerates of sodium carbonate peroxide are produced by contacting rotary agitated sodium carbonate peroxide with an aqueous agglomerating solution having a viscosity of at least 30 centipoise and containing less than 20% by weight agglomerating agent.

대표청구항 ▼

A process for producing strong, stable, free-flowing agglomerates of sodium carbonate peroxide, which comprises: subjecting particles of sodium carbonate peroxide having a size below about 50 mesh to rotary agitation; contacting the rotating particles with an aqueous agglomerating solution having a

A process for producing strong, stable, free-flowing agglomerates of sodium carbonate peroxide, which comprises: subjecting particles of sodium carbonate peroxide having a size below about 50 mesh to rotary agitation; contacting the rotating particles with an aqueous agglomerating solution having a viscosity of at least 30 centipoise and containing less than 20% by weight agglomerating agent selected from the group consisting of salts of carboxymethylcellulose; interpolymer of methyl vinyl ether and maleic anhydride; crosslinked or esterfied interpolymer of methyl vinyl ether and maleic anhydride; polyvinylpyrollidone; crosslinked or comonomers of polyvinylpyrollidone; guar gum; crosslinked or substituted guar gum; and carboxypolymethylenes; continuing the rotary agitation of the resultant wet particles until they become agglomerated; drying the resulting wet agglomerated particles at temperatures from about 20°C to about 150°C; and recovering dry agglomerated particles of sodium carbonate peroxide having bulk densities of about 0.4 to about 1.0 g/cc and at least 70% particle sizes of about 16 to about 50 mesh.