Abstract: This invention relates to novel macromers containing dithiocarbonate (or xanthate) groups, novel preformed stabilizers comprising macromers, and novel polymer polyols comprising the novel macromers and/or novel preformed stabilizers. This invention also relates to processes for the preparation of these materials. Other aspects of this invention include foams comprising the novel polymer polyols and a process for preparing foam comprising the novel polymer polyols.

Abstract: A method for the reduction organic molecules comprising a Ruthenium-Triphosphine complex with aromatic ligands at the phosphors which are ortho or meta substituted.

Abstract: The invention provides a process for preparing polyether carbonate polyols by addition of alkylene oxides and carbon dioxide onto H-functional starter substance in the presence of a double metal cyanide (DMC) catalyst or in the presence of a metal complex catalyst based on the metals zinc and/or cobalt, wherein (?) alkylene oxide and carbon dioxide are added onto H-functional starter substance in a reactor in the presence of a double metal cyanide catalyst or in the presence of a metal complex catalyst based on the metals zinc and/or cobalt, wherein a reaction mixture comprising the polyether carbonate polyol is obtained, and wherein (?) the reaction mixture obtained in step (?) remains in the reactor or is transferred continuously into a postreactor, wherein the content of free alkylene oxide in the reaction mixture is reduced in each case in the manner of a postreaction, characterized in that a component K is added during the postreaction, component K being selected from at least one compound containing a p

Abstract: The present invention relates to a method for producing polyether carbonate polyols, the polyether carbonate polyols having electron-poor and electron-rich double bonds, said method preferably comprising the steps of (a) providing a suspending agent and/or an H-functional starter compound and a DMC catalyst, 03) adding at least one epoxide and (y) adding carbon dioxide, an epoxide that does not contain an unsaturated group, and at least two unsaturated compounds, the unsaturated compounds in method step (y) being selected from the group comprising unsaturated epoxides and unsaturated cyclic anhydrides, and one of the unsaturated compounds having an electron-rich double bond and one of the unsaturated compounds having an electron-poor double bond. The invention also relates to the crosslinking of polyether carbonate polyols, the polyether carbonate polyols having electronpoor and electron-rich double bonds, and to the crosslinked polyether carbonates obtainable therefrom.

Abstract: The present invention relates to a process for preparing aromatic polycarbonates, comprising the step of reacting bisphenols with dithiocarbonates or selenium analogs thereof in the presence of a catalyst. It further relates to the use of dithiocarbonates or selenium analogs thereof as transesterifying reagents for the preparation of polycarbonates.

Abstract: A method for the reduction organic molecules comprising a Ruthenium-Triphosphine complex with aromatic ligands at the phosphors which are ortho or meta substituted.

Abstract: The invention relates to a method for producing polyether carbonate polyols by agglomeration of alkyl oxides and carbon dioxide on carboxylic acid in the presence of a double metal cyanide (DMC) catalyst, wherein one or more carboxylic acids are continually added to the reactor during the reaction, characterized in that the carboxylic acid is at least difunctional and has a pKa value greater than or equal to 1.5, and the adding of the one or more carboxylic acids occurs such that, at any time in the method according to the invention, the molar concentration of unconverted carboxylic acid in the reaction mixture does not exceed a value in the amount of 0.001 mol/g multiplied by the mass of the catalyst used per liter of reaction mixture, specified in grams, and two carboxylic acid groups present in the same molecule are separated from each other at least by one carbon atom. The method further relates to the polyether carbonate polyols obtained according to the invention.

Abstract: The present invention provides a method for producing low viscosity polyether carbonate polyols having side chains. A double metal cyanide catalyst and a suspension medium, with or without an H-functional starter compound, are initially introduced as a reaction mixture, and alkylene oxides are metered into the reaction mixture in two steps. The difference between the molecular weights of the lightest and the heaviest of the alkylene oxides metered in the two steps is greater than or equal to 24 g/mol, and the lightest alkylene oxide is a C2-C4 alkylene oxide. The alkylene oxides metered in the two steps can be the same or different. The invention also relates to the low viscosity polyether carbonate polyols produced by the method and to the use thereof.

Abstract: The present invention relates to a method for producing higher functional polyether carbonate polyols, said method preferably comprising the steps of ([alpha]) providing a DMC catalyst and; ([alpha][alpha]) a suspending agent that does contain any H-functional groups and/or ([alpha][beta]) an H-functional starter compound ([beta]) adding carbon dioxide and at least one alkylene oxide ([gamma]) adding carbon dioxide and at least two alkylene oxides, wherein these alkylene oxides can be the same as or different from the alkylene oxide or alkylene oxides added in step ([beta]), and ([delta]) adding carbon dioxide and at least one alkylene oxide, wherein this alkylene oxide or these alkylene oxides can be the same as or different from the alkylene oxides added in steps ([beta]) and ([gamma]), at least one of the alkylene oxides in step ([gamma]) having an epoxy functionality of >=2 and, in addition, in the case that no H-functional starter compound is provided in ([alpha]), step ([delta]) includes the addition

Abstract: The present invention relates to a process for preparing aromatic polycarbonates, comprising the step of reacting bisphenols with dithiocarbonates or selenium analogues thereof in the presence of a catalyst. It further relates to the use of dithiocarbonates or selenium analogues thereof as transesterifying reagents for the preparation of polycarbonates.

Abstract: The present invention relates to polyoxazolidinone compounds, a method for the production of polyoxazolidinone compounds, comprising the step of reacting a biscarbamate compound with a bisepoxide compound in the presence of a mono-carbamate, a mono-isocyanate and/or a mono-epoxide compound as chain regulator and a suitable base having a pKb value of ?9 as catalyst. The invention further relates to the use of polyoxazolidinone compounds with high thermal stability.

Abstract: The invention provides a process for preparing polyether carbonate polyols by addition of alkylene oxides and carbon dioxide onto H-functional starter substance in the presence of a double metal cyanide (DMC) catalyst or in the presence of a metal complex catalyst based on the metals zinc and/or cobalt, wherein (?) alkylene oxide and carbon dioxide are added onto H-functional starter substance in a reactor in the presence of a double metal cyanide catalyst or in the presence of a metal complex catalyst based on the metals zinc and/or cobalt, wherein a reaction mixture comprising the polyether carbonate polyol is obtained, and wherein (?) the reaction mixture obtained in step (?) remains in the reactor or is transferred continuously into a postreactor, wherein the content of free alkylene oxide in the reaction mixture is reduced in each case in the manner of a postreaction, characterized in that a component K is added during the postreaction, component K being selected from at least one compound containing a p

Abstract: A method for the reduction organic molecules comprising a Ruthenium-Triphosphine complex with aromatic ligands at the phosphors which are ortho or meta substituted.

Abstract: The invention relates to a method for producing isocyanurates and isocyanurate-containing polyurethanes, comprising the step of reacting an isocyanate in the presence of a catalyst.

Abstract: The present invention relates to a method for producing polyethercarbonate-polyoxymethylene block copolymers, comprising the step of polymerizing formaldehyde, wherein formaldehyde is polymerized in the presence of a polyethercarbonate having at least one Zerewitinoff-active H atom, obtaining an intermediate product. The obtained intermediate product can be further reacted with a cyclic carboxylic acid ester or carbonic acid ester, a cyclic anhydride, an epoxide, and/or an isocyanate, wherein a hydroxyl- or carboxy-functional or NCO-modified polyethercarbonate-polyoxymethylene block copolymer is obtained. The present invention further relates to polyethercarbonate-polyoxymethylene block copolymers that can be obtained by means of such a method and to the use of same to produce polyurethane polymers.

Abstract: A process for the preparation of polyethercarbonate polyols comprises the reaction of a reaction mixture comprising one or more H-functional starter compounds, one or more alkylene oxides, carbon dioxide and a double metal cyanide (DMC) catalyst. The reaction is conducted in a reactor under stirring with a specific power input into the reaction mixture, expressed as Watts per liter (W/L), of ?0.07 to ?5.00.

Abstract: The present invention relates to a process for preparing mercapto-crosslinked polyethercarbonate and sees polyethercarbonate polyols containing double bonds being reacted with polyfunctional mercaptans and/or sulfur with the involvement of initiator compounds.

Abstract: The invention relates to a method for producing functionalized polyoxymethylene block copolymers comprising the step of polymerizing formaldehyde in a reaction vessel in the presence of a catalyst, the polymerization of formaldehyde in addition taking place in the presence of a starter compound comprising at least 2 Zerewitinoff active H atoms, to obtain an intermediate product. The intermediate product obtained is subsequently reacted with a cyclic carboxylic acid ester or carbonic acid ester, thus obtaining a functionalized polyoxymethylene block copolymer. The invention further relates to functionalized polyoxymethylene block copolymers obtained by such a method and to the use of said copolymers.

Abstract: The invention relates to a method for producing polyether ester carbonate polyols by attaching at least one alkylene oxide, at least one cyclical anhydride, and carbon dioxide to one or more H-functional starter substances in the presence of a double metal cyanide catalyst. The method is characterized in that (?) a suspension agent, which does not contain H-functional groups, is provided in a reactor, and (?) one or more H-functional starter substances are continuously metered into the reactor during the reaction process, and the one or more alkylene oxides, the cyclical anhydride, and optionally the carbon dioxide are metered simultaneously or sequentially.

Abstract: A method for the methylation of amines, amides and imines comprises the step of reacting these compounds with CO2 and H2 in the presence of a Ruthenium-phosphine complex.