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 5 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
User control of replacement television advertisements inserted by a smart television
Cosmetic composition based on a supramolecular polymer and a hyperbranched functional polymer
Satellite fleet deployment
Circuit for and method of enabling communication of cryptographic data
System and method for reliable packet data transport in a computer network
Cascode circuit device with improved reverse recovery characteristic
Method for driving bistable display device
  Randomly Featured Patents
Active medical device having protected memory registers for storing adjustable parameter values
Low temperature method for making a photovoltaic material
Composite articles made by process for joining stainless steel part and silicon carbide ceramic part
Compositions comprising azelastine and methods of use thereof
Microwave oscillator with temperature compensation
Light-emitting device
Flow control for multi-level buffering schemes
Organizer
Coreless pressure sensitive label supply roll
OB polypeptides, modified forms and compositions