Composition and process for drying and expanding microspheres

摘要: Microsphere wet cake is mixed with a processing aid effective to prevent agglomeration and surface bonding of the microspheres, thereafter removing water by drying continuous mixing, optionally also under reduced pressure, i.e. vacuum drying. By control application heat balancing temperture it possible expansion microspheres from substantially none theoretical limits expansion. The in present invention any one wide diversity materials which meet requirements intended function, i.e., during process. Suitable include, way example, dry inorganic pigments or filler materials, like, related organic materials.