Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Process for the preparation of vinylic polymers, polymerization initiator for vinylic monomers, and styrene resin composition










Image Number 2 for United States Patent #6429273.

A process for producing a vinyl polymer which comprises carrying out anionic polymerization under the condition that the polymerization temperature is not lower than 45.degree. C. and not higher than 250.degree. C. and the concentration of the vinyl monomer based on the polymerization solvent is 45-100% by weight, wherein the metal of the cation forming a counterpart to the carbonic anion at the polymerization propagating species consists essentially of Mg, or Mg and M.sup.1 wherein M.sup.1 is at least one alkali metal selected from the group consisting of Li, Na and K, and the molar concentrations of the metals of Mg and M.sup.1 satisfy the relation of [Mg]/[M.sup.1 ].gtoreq.4, the invention also relates to a vinyl monomer polymerization initiator comprising (R.sup.2).sub.2 Mg wherein R.sup.2 is a hydrocarbon group.








 
 
  Recently Added Patents
Secure provisioning of a portable device using a representation of a key
System for wireless local area network (WLAN) transmission and for coexistence of WLAN and another type of wireless transmission and methods thereof
MIM capacitor and associated production method
Vending machine
Cellulose derivative and hydrogel thereof
Emulsions containing arylboronic acids and medical articles made therefrom
Encoder that optically detects positional information of a moving body from different optical paths lengths
  Randomly Featured Patents
Fail-safe thermostat for vehicular cooling systems
Apparatus and method for synchronizing multichannel extension data with an audio signal and for processing the audio signal
Coarse-fine ultrasound transducer array for medical imaging
Central station synchronization system
Method for integrating genes at specific sites in mammalian cells via homologous recombination and vectors for accomplishing the same
Mounting apparatus for fan
Transport pallet
Disposable mouth props
Method of making thin alloy wire
Device for measuring posture-determining parameters of a human body