Patent ID: 6099774
Filing Date: 2000-08-08
Classification: B29C,B29K,C08J,C08L,Y10T

Abstract:
A process for the preparation of a non-free flowable, non-dusting molding powder having a bulk density of at least 450 g/l which comprises grinding a suspension polymer with units of tetrafluoroethylene and 0.01 to 1% by weight of units of at least one perfluoro(alkyl-vinyl) ether with an alkyl group of 1 to 4 carbon atoms to a particle diameter d.sub.50 of 10 to 50 .mu.m and agglomerating the particles in a medium of water without the presence of organic solvent to give an average agglomerate diameter d.sub.50 of about 30 to about 100 .mu.m.