BLOWING AGENT POWDER AND PROCESS FOR PRODUCING THE SAME

摘要

BLOWING AGENT POWDER AND PROCESS FOR PRODUCING THE SAME , A POWDER COMPRISING A BLOWING AGENT POWDER CORE WHICH IS COATED WITH AT LEAST ONE OIL-LIKE SUBSTANCE ON ITS SURFACE, AND A PROCESS FOR PRODUCING A POWDER COMPRISING A BLOWING AGENT POWDER CORE WHICH IS COATED WITH AT LEAST ONE OIL-LIKE SUBSTANCE ON ITS SURFACE, COMPRISING THE FOLLOWING STEPS (A) AND (B): (A) ADDING AT LEAST ONE OIL-LIKE SUBSTANCE IN THE FORM OF A MIST TO A BLOWING AGENT POWDER; AND (B) MIXING THE OIL-LIKE SUBSTANCE WITH THE BLOWING AGENT POWDER UNDER SUCH MIXING CONDITIONS THAT THE BLOWING AGENT POWDER IS LESS SUSCEPTIBLE TO PULVERIZATION.