Polymerization of ethylene oxide using metal cyanide catalysts

Ethoxylations of various initiator compounds are performed in the presence of metal cyanide catalysts. The catalysts surprisingly form a wide variety of polyether products that in most cases contain only small amounts of high molecular weight poly(ethylene oxide).

Complexing agent-modified hexacyanometallate hexanitrometallate catalysts

Metal [hexacyanometallate hexanitrometallate] complexes are useful alkylene oxide polymerization catalysts. The metal is any that forms a precipitate with hexacyanometallate and hexanitrometallate groups. These catalysts are made from less expensive raw materials than the common zinc hexacyanocobaltate catalysts, and provide short induction periods and in many cases more controlled exotherms.

Complexing agent-modified trimetal cyanide catalyst

Metal [hexacyanocobaltate, cobalthexanitrite nitroferricyanide] complexes are useful alkylene oxide polymerization catalysts. The metal is any that forms a precipitate with the hexacyanocobaltate, cobalthexanitrite and nitroferricyanide groups. These catalysts are made from less expensive raw materials than the common zinc hexacyanocobaltate catalysts, and provide short induction periods and many cases more controlled exotherms. In addition, the metal [hexacyanocobaltate, cobalthexanitrite nitroferricyanide] catalysts often provide poly(propylene oxide) polymers having very low unsaturations, even when the catalyst is complexed with a complexing agent such as glyme.

Metal hexacyanocobaltate nitroferricyanide complexes

Metal hexacyanocobaltate nitroferricyanide catalysts are active polymerization catalysts for alkylene oxides. These catalysts tend to have short induction periods, followed by rapid polymerization of alkylene oxides to polyethers.

Metal catalysts complexed with sulfone or sulfoxide compounds

Metal cyanide catalysts are complexed with organic sulfone or sulfoxide compounds. The catalysts are active alkylene oxide polymerization catalysts that tend to have short induction periods and moderate exotherms.

Polymerization of ethylene oxide using metal cyanide catalysts

Ethoxylations of various initiator compounds are performed in the presence of metal cyanide catalysts. The catalysts surprisingly form a wide variety of polyether products that in most cases contain only small amounts of high molecular weight poly(ethylene oxide).

Polymerization of ethylene oxide using metal cyanide catalysts

Polyurethane foam formulations having improved flowability and flexible polyurethane foams prepared therewith

The disclosed invention is a low viscosity, high solids copolymer polyol formulation, and the method of making the same. The invention is also related to polyurethane molded foams prepared using the disclosed copolymer polyols. The copolymer polyols of the present invention were prepared from low molecular weight diols and low molecular weight triols, and have increased flowability and enhanced processability in polyurethane forming reactions. The copolymer polyols of the present invention were also characterized as having a low level of unsaturated impurities.

A process for the preparation of polyether polyols with a reduced unsaturation content

Polyether polyols are prepared by reacting an alkylene oxide comprising propylene oxide with an initiator containing at least three active hydrogen atoms per molecule. The reaction is conducted in the presence of an alkoxylation catalyst which is barium, strontium and their oxides, hydroxides, hydrated hydroxides or monohydroxides salts, or mixtures thereof; and in the presence of from 1 to 10 weight percent, based on total weight of initiator, of a processing aid that is an organic monohydroxyl-or dihydroxyl-containing substance having a molecular weight of at least 30, or a mixture thereof. The processing aid enhances the ability to obtain polyether polyols having a reduced unsaturation content.

Polymerization of ethylene oxide using metal cyanide catalsyts

Complexing agent-modified hexacyanometallate hexanitrometallate catalysts

Metal [hexacyanometallate hexanitrometallate] complexes are useful alkylene oxide polymerization catalysts. The metal is any that forms a precipitate with hexacyanometallate and hexanitrometallate groups. These catalysts are made from less expensive raw materials than the common zinc hexacyanocobaltate catalysts, and provide short induction periods and in many cases more controlled exotherms.

Polyurethane foam formulations having improved flowability and flexible polyurethane foams prepared therewith

Polymerization of ethylene oxide using metal cyanide catalysts

Ethoxylations of various initiator compounds are performed in the presence of metal cyanide catalysts. The catalysts surprisingly form a wide variety of polyether products that in most cases contain only small amounts of high molecular weight poly(ethylene oxide).

Polymerization of ethylene oxide using metal cyanide catalsyts

Ethoxylations of various initiator compounds are performed in the presence of metal cyanide catalysts. The catalysts surprisingly form a wide variety of polyether products that in most cases contain only small amounts of high molecular weight poly(ethylene oxide).

Complexing agent-modified trimetal cyanide catalyst

Metal [hexacyanocobaltate, cobalthexanitrite nitroferricyanide] complexes ar e useful alkylene oxide polymerization catalysts. The metal is any that forms a precipitate with the hexacyanocobaltate, cobalthexanitrite and nitroferricyanide groups. These catalysts are made from less expensive raw materials than the common zinc hexacyanocobaltate catalysts, and provide sho rt induction periods and in many cases more controlled exotherms. In addition, the metal [hexacyanocobaltate, cobalthexanitrite nitroferricyanide] catalyst s often provide poly(propylene oxide) polymers having very low unsaturations, even when the catalyst is complexed with a complexing agent such as glyme.</ SDOAB>

Polymerisierung von ethylenoxid mit der verwendung von metallcyanidkatalysatoren

A metal hexacyanocobaltate cobalthexanitrite nitroferricyanide catalyst complexed with one or more organic complexing agents, in a process for polymerizing an epoxide compound in the presence of a catalyst and a method of making an active polymerization

Complexing agent-modified trimetal cyanide catalyst

Metal catalysts complexed with sulfone or sulfoxide compounds