Organo-lithium compounds and a process for their preparation
Preparation of conjugated diene-monoalkenyl arene block copolymers having a low polydispersity index
1,5-diethenylnaphthalene compounds and bifunctional primers for anionic polymerization prepared therefrom Patent #: 5674799
ApplicationNo. 09/959431 filed on 01/10/2002
US Classes:526/340, Interpolymerized with aromatic hydrocarbon260/665R, C-metal502/157, Alkali metal bonded to carbon525/331.9, Polymer derived from monomer containing at least two ethylenic groups or diene rubber525/332.9, Interpolymer with aromatic hydrocarbon526/173, Material contains elemental alkali metal, hydride thereof, or alkali metal to carbon atom bond (Li, Na, K, Rb, Cs, Fr)526/335From hydrocarbon monomer containing at least two ethylenic groups, e.g., butadiene, etc.
ExaminersPrimary: Teskin, Fred
Attorney, Agent or Firm
International ClassesC08F 36/04 (20060101)
C08F 36/00 (20060101)
C08F 297/00 (20060101)
C08F 297/04 (20060101)
Foreign Application Priority Data1998-08-31 JP
AbstractA block copolymer having narrow molecular weight distribution and excellent symmetrical property or a telechelic polymer having, equally at both terminals thereof, a functional group can be produced by using a polymerization initiator solution which comprises a dilithium polymerization initiator having an average number of functional groups of 1.8 to 2.0/molecule and a solvent selected from aliphatic hydrocarbon compounds and alicyclic compounds and is free of a polar substance.