12/7/2010
7,846,996
Polymer concentrates with improved processability
Pask, Damman and Schroeder of LANXESS Deutschland, Germany has developed new polymer concentrates on the basis of polymer additives, like e.g. fillers and flame-retardants, are provided which have in particular an increased bulk density compared to the polymer additives as such. This increased bulk density leads to a substantial improvement in the processability of such concentrates, their dispersibility during compounding and the properties of the resulting polymer compound. Processing improvements include less dust, faster processing and more homogeneous additive dispersion. The invention also provides a process for preparing such new polymer concentrates, a process for preparing polymer compounds containing the new polymer concentrates, the respective polymer compounds and a process for preparing formed parts thereof. Such formed parts have more uniform properties such as density, wall thickness, and in case of the flame-retardants more homogeneous and consistent flame retardancy.  (RDC 5/12/2011)

11/30/2010
7,842,748
Master batch composition, polyolefin resin composition comprising the same, and molded product thereof
Takebe  et al of Idemitsu Kosan , Japan, have developed  a master batch with  10 to 95 wt% an additive, 1 to 50 wt% of an olefin polymer with desired properties and  1 to 89 wt% of a polyolefin carrier.  This is especially useful of injection molded polypropylene enabling high density filling of various additives in the master batch composition, and which is free of blocking.  (RDC 4/20/2011)