| Patent Number |
Title Of Patent |
Date Issued |
| 7553917 |
Technique for selecting polymerization modifiers cross reference statement |
June 30, 2009 |
| A combinatorial method for identifying a catalyst composition for use in the homogeneous addition polymerization of an olefin monomers, said catalyst composition comprising a transition metal compound, a cocatalyst and a polymerization modifier, as well as catalyst compositions and i |
| 7214638 |
Olefin polymerization catalyst composition comprising group 13 amide derivatives |
May 8, 2007 |
| Catalyst compositions that are highly tolerant of catalyst poisons for use in addition polymerizations comprising a catalytic derivative of a Group 4 metal complex, a cocatalyst, and a Group 13 metal amide compound. |
| 6255499 |
Process for the hydro-oxidation of olefins to olefin oxides using oxidized gold catalyst |
July 3, 2001 |
| A process and catalyst for the hydro-oxidation of an olefin having three or more carbon atoms, such as propylene, to form an olefin oxide, such as propylene oxide. The process involves contacting the olefin with oxygen under reaction conditions in the presence of hydrogen and a catalyst. |
| 5336750 |
Process for the preparation of polycarbonates |
August 9, 1994 |
| A process for the preparation of a polycarbonate comprising reacting a diaryl carbonate with a bisphenol to produce a polycarbonate and a phenol, regenerating the diaryl carbonate by reacting the phenol byproduct with a carbonyl halide, and optionally recycling the hydrogen halide using |
| 5276134 |
Process for the preparation of phenyl carbonates or polycarbonates |
January 4, 1994 |
| A process for the preparation of an aromatic carbonate or polycarbonate from a phenol or bisphenol, methanol, carbon monoxide and oxygen comprising the steps of 1) reacting phenol or bisphenol with acetic anhydride to form (bis)phenyl acetate; 2) reacting dimethyl carbonate with (bis |
| 5189139 |
Preparation of polycarbonates comprising separating bisphenol, converting bisphenol to diaryl ca |
February 23, 1993 |
| A process for the preparation of a polycarbonate comprising reacting a diaryl carbonate with a bisphenol to produce a polycarbonate and a phenol, regenerating the diaryl carbonate by reacting the phenol byproduct with a carbonyl halide, and optionally recycling the hydrogen halide using |
| 4973728 |
Preparation of aromatic carbonates |
November 27, 1990 |
| Aromatic carbonates useful for the preparation of high molecular weight polycarbonate resins are prepared by reacting methanol, carbon monoxide and oxygen to prepare dimethyl carbonate; reacting a methyl silyl ether with a phenol or bisphenol to prepare an aryl silyl ether, and reacting |
| 4794155 |
Process for forming arylether polymers |
December 27, 1988 |
| A moiety with the formula:reacts in the presence of a catalyst with a moiety of the formula:to form a linkage of the formula:wherein Ar.sup.1, Ar.sup.2 and Ar.sup.3 are aromatic moieties, X is an activating group, Y is a hydrogen, a trihydrocarbylsilyl, a trihydrocarbyltin, or a carbonyl moi |
| 4775943 |
Method and apparatus for determining polymer molecular weight distribution parameters |
October 4, 1988 |
| Method and apparatus for determining various molecular weight distribution parameters by concurrent measurement of hydrodynamic volume, specific viscosity and mass. Essentially concurrent viscosity and mass detectors are described, as are improved methods for viscosity detection, which |
