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 4 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
Plants and seeds of hybrid corn variety CH450823
Differentiated PSIP table update interval technology
Waterproof wound protector
Isolated nucleic acid molecule encoding an antibody that reduces GDF-8 activity
Information processing apparatus and power supply controlling method
Method and apparatus for a cryptographically assisted commercial network system designed to facilitate buyer-driven conditional purchase offers
Image forming apparatus having exhaust fan
  Randomly Featured Patents
Transtympanic vibration device for implantable hearing aid and apparatus for installing the same
Lens arrangement
Electronic stethoscope
1-(2-Naphthyl)-2,3-butadien-1-ols
Rotary compressor apparatus
Steam separating apparatus
Laser modulation controller using additive and amplitude modulation control tones
Pad integrity improvement by replacing the constructive adhesive with ultrasonic compressions
Insulation piercing electrical clamp connector
Manufacturing method for dynamic damper