摘要:
A continuous method of treating a polymer reaction mixture for continuously separating a styrene polymer and volatile ingredient by flowing down, for example, a mixture of low molecular weight styrene polisher and high molecular weight styrene polymer through a circular-ring-shaped space formed between a jacketed double pipe and a concentrically located inner pipe of a heat-exchanger, and flashing into a vacuum chamber connected with said heat-exchanger, is provided.The polymer is useful for the preparation of electrophotographic toner.
摘要:
Cylinders of a diesel engine 1 are provided with cylinder pressure sensors 29a to 29d for detecting combustion chamber pressures. An electronic control unit (ECU) 20 of the engine selects optimum combustion parameters in accordance with a fuel injection mode of fuel injectors 10a to 10d of the engine and a combustion mode determined by the amount of EGR gas supplied from the EGR valve 35 from among a plurality of types of combustion parameters expressing the combustion state of the engine calculated based on the cylinder pressure sensor output and feedback controls the fuel injection amount and fuel injection timing so that the values of the combustion parameters match target values determined in accordance with the engine operating conditions. Due to this, the engine combustion state is controlled to the optimum state at all times regardless of the fuel injection mode or combustion mode.
摘要:
A toner resin suitable for being used in toner compositions or developer compositions for electrostatic imaging is prepared by polymerization of styrene and butadiene in the presence of a mixture of n-dodecyl mercaptan and t-dodecyl mercaptan. The toner resin has defined weight average and number average molecular weights and a defined polydispersity that provide an improved toner resin that can be attained without blending different copolymers while using conventional apparatus. Additionally, the toner resin can exhibit a suitable melt index and glass transition temperature.