Patent ID: 6184270
Filing Date: 2001-02-06
Classification: C08J,C09D

Abstract:
A method for producing a powder comprising the steps of:a. charging a vessel with a mixture of at least two solid components, at least one of the solid components comprising a polymeric resin;b. charging the vessel with a fluid in which the polymeric resin is not substantially soluble, which swells the polymeric resin and which lowers the glass transition temperature of the polymeric resin, the fluid selected such that the density of the fluid can be adjusted upon adjustment of temperature and pressure in the vessel to enable creation of a suspension of the mixture within the vessel upon agitation of the contents of the vessel;c. maintaining the temperature of the mixture to a temperature above the glass transition temperature of the polymeric resin in the fluid;d. adjusting the pressure of the fluid such that the density of the fluid enables creation of the suspension of the mixture within the vessel upon agitation of the contents of the vessel;e. agitating the contents of the vessel; andf. reducing the temperature to a temperature below the glass transition temperature of the polymeric resin component in the fluid.