| Patent Number |
Title Of Patent |
Date Issued |
| 5990232 |
Stabilizers for polymer polyols |
November 23, 1999 |
| Unique, well defined polyethers containing both hydroxyl-functionality and unsaturation-functionality are prepared by oxyalkylating an unsaturated monomer having at least two free carboxylic acid groups in the presence of an effective amount of a double metal cyanide complex catalyst, |
| 5854386 |
Stabilizers for polymer polyols |
December 29, 1998 |
| Unique, well defined polyethers containing both hydroxyl-functionality and unsaturation-functionality are prepared by oxyalkylating an unsaturated monomer having at least one oxyalkylatable hydrogen in the presence of an effective amount of a double metal cyanide complex catalyst, option |
| 5783513 |
Process for making double metal cyanide catalysts |
July 21, 1998 |
| A process for making substantially non-crystalline double metal cyanide (DMC) catalysts having improved activity and performance is disclosed. The process comprises using a metal salt having an alkalinity within the range of about 0.2 to about 2.0 wt. % as metal oxide based on the amount |
| 5780584 |
Highly active double metal cyanide complex catalysts |
July 14, 1998 |
| Highly active double metal cyanide (DMC) complex catalysts and methods for making them are disclosed. The catalysts contain less than about 0.2 moles of metal salt per mole of DMC compound in the catalyst, and unlike other highly active DMC catalysts, are substantially crystalline. Polye |
| 5714639 |
Double metal cyanide catalysts and methods for making them |
February 3, 1998 |
| Improved double metal cyanide (DMC) catalysts useful for making epoxide polymers are disclosed. One catalyst is a paste of a double metal cyanide (DMC) compound, an organic complexing agent, and water. The paste comprises at least about 90 wt. % of particles having a particle size wi |
| 5712216 |
Highly active double metal cyanide complex catalysts |
January 27, 1998 |
| Improved double metal cyanide catalysts are disclosed. The substantially amorphous catalysts of the invention are more active for polymerizing epoxides than conventional DMC catalysts, which have a substantial crystalline component. Polyol products made with the catalysts are unusual |
| 5639705 |
Double metal cyanide catalysts and methods for making them |
June 17, 1997 |
| Improved double metal cyanide (DMC) catalysts useful for making epoxide polymers are disclosed. One catalyst is a paste of a double metal cyanide (DMC) compound, an organic complexing agent, and water. The paste comprises at least about 90 wt. % of particles having a particle size wi |
| 5627122 |
Highly active double metal cyanide complex catalysts |
May 6, 1997 |
| Highly active double metal cyanide (DMC) complex catalysts and methods for making them are disclosed. The catalysts contain less than about 0.2 moles of metal salt per mole of DMC compound in the catalyst, and unlike other highly active DMC catalysts, are substantially crystalline. Polye |
| 5248833 |
Process for purifying polyols made with double metal cyanide catalysts |
September 28, 1993 |
| A process for purifying polyether polyols prepared using double metal cyanide (DMC) catalysts is disclosed. The process involves combining a mixture of the polyol and a C.sub.1 -C.sub.6 aliphatic alcohol with an amount of a chelating agent effective to form an insoluble complex with |
| 5200434 |
Amide derivatives of alkylene oxide polyethers and their uses in polyurethane foam manufacture |
April 6, 1993 |
| Amine-containing amide derivatives of polyethers, and the use of such materials as catalysts in manufacture of polyurethane foam. The derivatives may be represented by the general formula ##STR1## wherein: R is CH.sub.2 when the amino-amide-containing moiety is located on an end |
| 5158922 |
Process for preparing metal cyanide complex catalyst |
October 27, 1992 |
| Highly active double metal cyanide complex catalysts suitable for use in ring-opening polymerization reactions may be prepared in filterable form by controlling the order of reagent addition, the temperature of the reaction medium, and the stoichiometric ratio of the reactants. |
