Abstract: New thiadiazole ureas are provided for the control of plant growth, especially of undesirable weeds and grasses. Particularly effective are compounds which contain an organic substituent in the 5-position of the thiadiazole portion.

Abstract: Water based coatings have been developed comprising water containing dispersed liquid droplets of water immiscible, hydroxy functional organic material, which are emulsified in the water, the water having dispersed therein an amine salt constituted by a salt of a solubilizing acid with a polyamide having a plurality of terminal primary amine groups. About one of the primary amine groups in the polyamide is unsubstituted, and at least about 70% of the isocyanate-reactive amino hydrogen atoms in the polyamide other than in the unsubstituted primary amine group are reacted with one isocyanate group of an organic polyisocyanate, the remaining isocyanate groups of which are blocked by a volatile blocking agent. The blocked isocyanate groups are nonreactive at room temperature and the unblocked isocyanate groups are reactive with the hydroxy functionality of the organic hydroxy functional material at elevated temperature.

Abstract: High solids, low viscosity, radiation curable, aqueous coatings compositions are provided by adding a small proportion of water to a polyethylenically unsaturated resin, preferably a liquid polyester containing acrylate groups and carboxyl functionality enabling improved dispersibility with water in the presence of a base, and a water soluble monoethylenically unsaturated monomer selected from acrylamide and N-methylol acrylamide is added to lower the viscosity of the composition and also to improve the cure. An ultraviolet photosensitizer, such as benzophenone, is added, preferably together with a tertiary amine cosensitizer, to enable ultraviolet cure.

Abstract: The specific embodiments provide for pelletizing plastic material in a system including a device for compacting the plastic material through a plurality of orifices. Air is vented from the compacting device by a conduit, and a pressurized gaseous stream is supplied in the conduit in a direction away from the compacting device. A signal is generated indicative of the temperature of a portion of the compacting device, and the flow rate of gaseous stream is controlled in response to the signal.

Abstract: Method for cooling and pelletizing thermoplastic material including compacting the plastic material through a plurality of orifices. Air is vented from the compacting device by a conduit, and a pressurized gaseous stream is supplied in the conduit in a direction away from the compacting device. A signal is generated indicative of the temperature of a portion of the compacting device, and the flow rate of gaseous stream is controlled in response to the signal.