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Anionic copolymerization of 1, ldiphenylethylene and rn-and p divinylbenzenes gave soluble copolymers having pendant vinyl groups when an excess amount of 1,ldiphenylethylene over divinylbenzenes was used. The copolymers hardly formed cross-linked polymers, as compared with the homopolymers of divinylbenzenes, and were easlly converted to polymer anions by adding sec-butyllithlum in THF at -78 "C. The anions were reacted with several methacrylates or other vinyl monomers to give the graft copolymers with the corresponding polymer branches. The number of branches could be controlled by partially quenching the completely anionized copolymer with a certain amount of methanol before the addition of the monomers or by changing the amount of sec-butyllithium. Practical applications of the graft copolymers to polymeric emulsifier and negative electron-beam resist were examined.

This paper describes an automatic pursuit routing capability necessary for a public land mobile network because mobile stations move freely through service areas. The purpose of pursuit routing is to automatically deliver calls to the called mobile station through the best route. Callers can dial without knowing the actual location of the called mobile station. Automatic pursuit routing requires three logical functions of the mobile communication control center (MCC): the gateway MCC, the home MCC, and the visited MCC. The charging method, numbering plan, and the signaling architecture for implementation are also described, and the effects of the APR and the MCC logical function capabilities are discussed.

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