Abstract: The invention relates to a method for producing a polymer which contains organooxysilyl end groups. The method first has the step of reacting a polyoxyalkylene polyol which contains carbon-carbon multiple bonds with a organooxysilyl compound of the formula Si(X)n(R)4-n in the presence of a catslyst, wherein X independently of one another represents C1-C8-alkoxy, C7-C20-aralkoxy, C6-C14-aroxy, C7-C20-alkylaroxy, C1-C20-acyloxy; R independently of one another represents a saturated or unsaturated C1-C22-alkyl, C6-C14-aryl, C7-C14-aralkyl, C7-C14-alkylaryl; and n is 2, 3, or 4. The invention additionally relates to a method for producing an elastomer precursor from the polymer which contains organooxysilyl end groups and to products which can be obtained using said method.

Abstract: A method for preparing polyoxyalkylene monomers, comprising the step of the reaction of one or more H-functional starter substance(s), one or more alkylene oxides and carbon dioxide in the presence of a DMC catalyst is characterized in that at least one of the H-functional starter substance(s) comprises a carbon-carbon double bond, wherein the carbon-carbon double bond is part of a cyclic structure. The macromonomers obtained can be used in a method for preparing polyoxyalkylene brush polymers, wherein this method comprises the step of the reaction with an olefin metathesis catalyst. The polyoxyalkylene brush polymers obtained may subsequently be crosslinked.

Abstract: A process for making microwave-irradiated nanocomposites comprising graphene nanoplatelets dispersed in a polymer matrix, showing improved structural and electrical properties, is provided. The nanocomposites may be made using a solution casting technique, and may have a bilayer structure comprising a graphene-enriched layer in contact with a polymer-enriched layer. The nanocomposite may be used as a shielding material on electrical devices to decrease electromagnetic interference.

Abstract: A process for making microwave-irradiated nanocomposites comprising graphene nanoplatelets dispersed in a polymer matrix, showing improved structural and electrical properties, is provided. The nanocomposites may be made using a solution casting technique, and may have a bilayer structure comprising a graphene-enriched layer in contact with a polymer-enriched layer. The nanocomposite may be used as a shielding material on electrical devices to decrease electromagnetic interference.

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 process for preparing a phosphorus-functional polyethercarbonate polyol, comprising reacting a polyethercarbonate polyol having unsaturated groups with a phosphorus-functional compound of formula (Ia): wherein X=O or S; and wherein R1 and R2 are selected from the group consisting of C1-C22 alkyl, C1-C22 alkoxy, C1-C22 alkylsulfanyl, C6-C70 aryl, C6-C70 aryloxy, C6-C70 arylsulfanyl, C7-C70 aralkyl, C7-C70 aralkyloxy, C7-C70 aralkylsulfanyl, C7-C70 alkylaryl, C7-C70 alkylaryloxy, C7-C70 alkylarylsulfanyl, or wherein R1 and R2 are bridged to one another directly and/or via heteroatoms and are selected from the group consisting of C1-C22 alkylene, oxygen, sulfur, and NR5, wherein R5 is hydrogen, C1-C22 alkyl, C1-C22 acyl, C7-C22 aralkyl, or C6-C70 aryl radical. A process for preparing a phosphorus-functional polyurethane polymer is disclosed.

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: The present invention relates to a method for producing a prepolymer that contains carbon-carbon multiple bonds, a polyol component A) being reacted with component B) that contains isocyanate groups and the polyol component comprising a polyether carbonate polyol that contains carbon-carbon multiple bonds.

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 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: 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: 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: A process for making microwave-irradiated nanocomposites comprising graphene nanoplatelets dispersed in a polymer matrix, showing improved structural and electrical properties, is provided. The nanocomposites may be made using a solution casting technique, and may have a bilayer structure comprising a graphene-enriched layer in contact with a polymer-enriched layer. The nanocomposite may be used as a shielding material on electrical devices to decrease electromagnetic interference.

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: 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 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: Techniques for determining conditions of power lines in a power distribution system based on measurements collected by a plurality of sensor units deployed in the power distribution system. Techniques include obtaining first transformed data associated with a first set of one or more measurements collected by a first sensor unit in the plurality of sensor units and second transformed data associated with a second set of one or more measurements collected by a second sensor unit in the plurality of sensor units, and determining, by using at least one processor and based at least in part on one or more features calculated from the first transformed data and the second transformed data, at least one condition of at least one power line in the power distribution system.

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: The invention relates to a method for producing polyether carbonate polyols by attaching alkylene oxides and carbon dioxide to one or more H-functional starters in the presence of a double-metal cyanide catalyst, characterized in that (alpha) a suspending agent which contains no H-functional groups and is selected from among one or more compounds from the group consisting of aliphatic lactones, aromatic lactones, lactides, cyclic carbonates comprising at least three optionally substituted methylene groups between the oxygen atoms of the carbonate group, aliphatic cyclic anhydrides, and aromatic cyclic anhydrides, is provided in a reactor; (ss) optionally, a moiety of alkylene oxide is added to the mixture from step (alpha) at temperatures of 90 to 150 DEG C., and the addition of the alkylene oxide compound is then interrupted; and (gamma) one or more H-functional starters are continuously metered into the reactor during the reaction.

Abstract: The present invention relates to a process for the activation of double metal cyanide (DMC) catalysts and to a process for the preparation of polyethercarbonate polyols from one or more H-functional starter compounds, one or more alkylene oxides and carbon dioxide in the presence of a double metal cyanide catalyst, characterized in that (?) (?1) the DMC catalyst and one or more H-functional starter compounds are placed in a reactor, (?2) an inert gas, an inert gas/carbon dioxide mixture or carbon dioxide is passed through the reactor at a temperature of 50 to 200° C. and at the same time a reduced pressure (absolute) of 10 mbar to 800 mbar is established in the reactor by removal of the inert gas or carbon dioxide, (?) under an atmosphere of inert gas/carbon dioxide mixture or under a pure carbon dioxide atmosphere, alkylene oxide is added to the mixture from step (?) at temperatures of 50 to 200° C.