Abstract: In one aspect, methods of depolymerization are described herein comprising providing a synthetic polymer including a hydroxylated aliphatic backbone or hydroxylated backbone segments, and homolytically activing O—H bonds of the hydroxyl groups. Homolytic activation induces the formation of alkoxy radical intermediates followed by C—C bond ?-scission events breaking the polymer backbone into depolymerization products. In some embodiments, depolymerization products comprise alkyl radical intermediates reduced by hydrogen atom transfer. Moreover, in some embodiments, the depolymerization products are further reacted into difunctionalized products or comprise functionalities derived from the polymer structure. The difunctionalized products can subsequently be employed in polymerization processes for the production of additional synthetic polymers.

Abstract: Continuously operating batch system for proportioning concentrate for blood treatment through the use of a proportioning tank and means for filling and emptying the same dependent upon pressure and flow in the mixing tank.

Abstract: A dispensing brush for discrete material e.g. powder comprising a bristle tray having an outstanding rim and a bottom having longitudinal interrupted slots therein; slidingly attached thereto within the tray there is a powder container having a bottom with cross slots therein; said cross slots being alignable with the slots in the tray member or misaligned therewith for applying powder, i.e. to the body e.g. of an animal while at the same time brushing the animal's fur.