| Patent Number |
Title Of Patent |
Date Issued |
| 5998672 |
Double metal cyanide catalysts |
December 7, 1999 |
| Double metal cyanide catalysts, prepared by drying a catalyst slurry by a non-agglomerative drying method such as spray drying or freeze drying, directly produces catalyst particles of fine particle size such that intensive grinding is not required. The catalysts thus produced are di |
| 5900384 |
Double metal cyanide catalysts |
May 4, 1999 |
| Double metal cyanide catalysts, prepared by drying a catalyst slurry by a non-agglomerative drying method such as spray drying or freeze drying, directly produces catalyst particles of fine particle size such that intensive grinding is not required. The catalysts thus produced are di |
| 4485210 |
Process for the continuous production of star-block copolymers of a monovinyl aromatic monomer a |
November 27, 1984 |
| A continuous process for producing star-block copolymer of a monovinyl aromatic monomer and a conjugated diene by continuously forming a vinyl aromatic polymer having a low weight average molecular weight to number average molecular weight ratio in a first reactor by anionic initiation i |
| 4442273 |
Process and apparatus for continuous polymerization of a monovinyl aromatic monomer |
April 10, 1984 |
| A process and apparatus for the continuous polymerization of monovinyl aromatic monomers, such as styrene, to produce a substantially monodisperse polymer, wherein a solution of monomer in an inert solvent and a hydrocarbyllithium initiator are fed to the bottom zone of a sealed, cyl |
| 4230877 |
Method for increasing the 4,4'dicarbamate isomer of the diphenylmethane dicarbamates during prep |
October 28, 1980 |
| A method for increasing the 4,4' disubstituted isomer of the diphenylmethane dicarbamates produced by the acid catalyzed condensation of an N-aryl carbamic acid ester, such as ethylphenylcarbamate, with a carbonyl compound, such as formaldehyde, which comprises carrying out the conde |
