| http://www.w3.org/ns/prov#value | - The present invention, in part, is a process for preparing in an economical, simple manner hollow plastic microspheres or small or large spheres which are substantially spherical in shape, uniform in size, wall thickness, and strength characteristics. [0021] The present invention, in part, is drawn to a process for the preparation of hollow plastic microspheres or small or large spheres or large b
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