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 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 polyether carbonates containing alkoxysilyl groups in which (a) an unsaturated polyether carbonate polyol is reacted with (b) an alkoxysilane compound of formula (II) Si(X)m(R1)n(R2)o (II), where X=H, Y—S—H and Y=C1-C22 alkylene, C6-C14 arylene, C7-C14 aralkylene, C7-C14 alkylarylene; R1=C1-C8 alkoxy, C7-C20-aralkoxy, C6-C14 aroxy, C7-C20 alkylaroxy; R2=C1-C22 alkyl, C6-C14 aryl, C7-C14 aralkyl, C7-C14 alkylaryl, and m and n represent, independently of one another, an integer ?1, o is zero or an integer ?1 and m+n+o=4. The invention further relates to the production of a polyurethane polymer using such a polyether carbonate, a cross-linked, siloxane group containing polymer and a molded part containing or consisting of said cross-linked polymer.

Abstract: The present invention relates to a method that includes providing a formulation having an isocyanate-functional prepolymer and a curing component comprising an amino-functional aspartic ester of the general formula (I) applying the formulation to a cell tissue; and curing the formulation such that the loss of blood (haemostatic) or tissue fluids is staunched or leaks in cell tissues are sealed.

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 present invention relates to a process for preparing branched polyether carbonate polyols, comprising the step of reacting an alkylene oxide and carbon dioxide with an H-functional starter compound in the presence of a catalyst, wherein the reaction is additionally conducted in the presence of a branching compound comprising a functional group polymerizable by ring-opening and an H-functional group. The branching compound is added during the reaction in such a way that the proportion of the branching compound in the reaction mixture obtained, at any time during the addition, is <=7.5% by weight, based on the amount of H-functional starter compound, alkylene oxide and branching compound added at this time. The invention further relates to a polyether carbonate polyol preparable by the process according to the invention, and to crosslinked polyether carbonate polymers based thereon.

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 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 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 the preparation of polyether carbonate polyols by catalytic copolymerization of carbon dioxide (CO2) with alkylene oxides in the presence of one or more H-functional starter substances with the aid of double metal cyanide (DMC) catalysts and in the presence of additives A) chosen from the group consisting of sterically non-hindered phenols, catechols, pyrocatechols, thiazines, phenothiazines, thiazoles, benzothiazoles, oxazines, phenoxazines, 2,2,6,6-tetramethylpiperidine 1-oxyl and nitrostyrenes and optionally in the presence of metal salts B).

Abstract: The present invention relates to a process for the activation of double metal cyanide (DMC) catalysts with heterocumulenes for the preparation of polyether carbonate polyols by catalytic copolymerization of carbon dioxide (CO2) with alkylene oxides in the presence of one or more H-functional starter substances, and to a process for the preparation of polyether carbonate polyols from one or more H-functional starter substances, one or more alkylene oxides and carbon dioxide in the presence of a double metal cyanide catalyst, characterized in that (?) under an inert gas atmosphere, under an atmosphere of an inert gas/carbon dioxide mixture or under a pure carbon dioxide atmosphere, at temperatures of from 90 to 150° C., the DMC catalyst is mixed with a heterocumulene and H-functional starter substance, (?) alkylene oxide is added at temperatures of from 100 to 150° C.

Abstract: The invention relates to a process for the preparation of polycarbonate polyols, characterized in that cyclic carbonates are polymerized in the presence of DMC catalysts and chain-transfer agents consisting of polyether carbonate polyols.

Abstract: The invention relates to multi-amine functional oligomers and multi-oxime functional oligomers in addition to a method for producing the same by means of the co-polymerization of carbonyl carriers such as olefins or dienes, reaction with hydroxylamine and a subsequent selective catalytic hydrogenation.

Abstract: The present invention relates to a method for producing linear and/or cyclic carbonate esters, involving the step of reacting an epoxide with carbon dioxide in the presence of a catalyser. The invention further relates to the use of special catalysers for reacting epoxides with carbon dioxide, special catalysers and special reaction products. The catalyser comprises a complex of a metal M or M-A with a ligand L, the metal M being present in an oxidation state of >=0, A standing for halide, carboxylate, phenolate, sulfonate, phosphonate, alkyl, alkoxy or amido, and the ligand L having the subsequent structure (Ia) or (Ib), wherein one or both of the OH groups shown in (Ia) and/or (Ib) can also be deprotonated.

Abstract: The invention relates to bimetallic complexes in which the ligand contains a salophen unit which complexes copper, manganese or cobalt and a phenanthroline unit which complexes palladium and the two systems are linked by a continuous conjugated system. The invention further relates to the use of these bimetallic complexes as catalysts for the oxidative carbonylation of aromatic hydroxy compounds to form diaryl carbonates, a process for preparing diaryl carbonates using the bimetallic complex as catalyst and also diaryl carbonates prepared by oxidative carbonylation of aromatic hydroxy compounds using the bimetallic complexes of the invention as catalysts.

Abstract: The present invention relates to a process for the activation of double metal cyanide (DMC) catalysts with heterocumulenes for the preparation of polyether carbonate polyols by catalytic copolymerization of carbon dioxide (CO2) with alkylene oxides in the presence of one or more H-functional starter substances, and to a process for the preparation of polyether carbonate polyols from one or more H-functional starter substances, one or more alkylene oxides and carbon dioxide in the presence of a double metal cyanide catalyst, characterized in that (?) under an inert gas atmosphere, under an atmosphere of an inert gas/carbon dioxide mixture or under a pure carbon dioxide atmosphere, at temperatures of from 90 to 150° C., the DMC catalyst is mixed with a heterocumulene and H-functional starter substance, (?) alkylene oxide is added at temperatures of from 100 to 150° C.

Abstract: The invention relates to a process for the preparation of polycarbonate polyols, characterised in that cyclic carbonates are polymerised in the presence of DMC catalysts and chain-transfer agents consisting of polyether carbonate polyols.

Abstract: The present invention relates to a process for the preparation of polyether carbonate polyols by catalytic copolymerization of carbon dioxide (CO2) with alkylene oxides in the presence of one or more H-functional starter substances with the aid of double metal cyanide (DMC) catalysts and in the presence of additives A) chosen from the group consisting of sterically non-hindered phenols, catechols, pyrocatechols, thiazines, phenothiazines, thiazoles, benzothiazoles, oxazines, phenoxazines, 2,2,6,6-tetramethylpiperidine 1-oxyl and nitrostyrenes and optionally in the presence of metal salts B).