Abstract: The invention relates to melt spun multifilaments based on thermoplastic polyurethane, their production and the use of said melt spun multifilaments to produce technical textiles and clothing such as socks, stockings, compression textiles like medical bandage, surgical hose, orthopedic elastic bandage, sport textiles, underwear etc.

Abstract: A method for the production of polyoxazolidinone compounds, comprising the step of reacting an isocyanate compound (A) with an epoxide compound (B) in the presence of a catalyst (C), wherein the isocyanate compound (A) comprises a isocyanate compound (A1) wherein the a isocyanate compound (A1) comprising at least two isocyanate groups (I1?2), preferred two isocyanate groups (I1=2), wherein the epoxide compound (B) comprises a epoxide compound (B1) and an epoxide compound (B2), wherein the epoxide compound (B2) is different from the epoxide compound (B1) wherein the epoxide compound (B1) comprising at least two terminal epoxide groups (F1?2), preferred two terminal epoxide groups (F1=2), linked together by a linking group (L1) and the epoxide compound (B2) comprising at least two terminal epoxide groups (F2?2)), preferred two terminal epoxide groups (F2=2), linked together by a linking group (L2), wherein the linking group (L2) comprises acyclic and covalent bonds to each other free of conjugated multiple bond

Abstract: Method for the production of polyoxazolidinone compounds, comprising the reaction of at least one biscarbamate compound (A) with at least one bisepoxide compound (B) in the presence of at least one base (D), at least one Lewis acid catalyst (E), and optionally at least one compound (C), wherein the compound (C) comprising a mono-carbamate group, a mono-isocyanate group and/or a mono-epoxide group, and wherein the base (D) having a pKb-value of ?9. The invention is also related to the resulting polyoxazolidinone compounds.

Abstract: The present invention describes a process for producing an elastomer, preferably a polyurethane-containing elastomer, by reacting a polyol component (A) comprising at least one polyether carbonate polyol (A-1) containing carbon-carbon double bonds with a component (B) which is reactive with OH groups and contains at least one compound reactive toward OH groups, preferably an isocyanate component (B-1) containing NCO groups, in the presence of a free-radical initiator (C), preferably at least one peroxide (C-1), and optionally a catalyst (D), where the molar ratio of the OH-reactive groups of component (B) reactive with groups, to the OH groups of the polyol component (A) containing carbon-carbon double bonds, is greater than 1.0. It further relates to elastomers obtainable by such a process, preferably polyurethane elastomers, the use thereof, and two-component systems for production of elastomers, preferably polyurethane elastomers.

Abstract: A process for producing polyoxymethylene polymers comprises the reaction of aqueous formaldehyde solution with an aqueous solution of a base, wherein A) a starter solution comprising formaldehyde is initially charged and B) an aqueous formaldehyde solution and a base are added to the starter solution to obtain a reaction mixture. The starter solution in step A) has a temperature of ?40° C. to ?46° C. and the additions of the solutions in step B) are performed at a temperature of the reaction mixture of ?40° C. to ?46° C. The base is an alkali metal hydroxide and/or an alkaline earth metal hydroxide and the molar ratio of formaldehyde to base is ?55:1 to ?90:1 based on the total amounts of formaldehyde and base employed in the process. The base in step B) is added in aqueous solution.

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 production of polyoxazolidinone compounds, comprising the step of reacting an isocyanate compound (A) with an epoxide compound (B) in the presence of a catalyst (C), wherein the isocyanate compound (A) comprises a isocyanate compound (A1) wherein the a isocyanate compound (A1) comprising at least two isocyanate groups (I1?2), preferred two isocyanate groups (I1=2), wherein the epoxide compound (B) comprises a epoxide compound (B1) and an epoxide compound (B2), wherein the epoxide compound (B2) is different from the epoxide compound (B1) wherein the epoxide compound (B1) comprising at least two terminal epoxide groups (F1?2), preferred two terminal epoxide groups (F1=2), linked together by a linking group (L1) and the epoxide compound (B2) comprising at least two terminal epoxide groups (F2?2)), preferred two terminal epoxide groups (F2=2), linked together by a linking group (L2), wherein the linking group (L2) comprises acyclic and covalent bonds to each other free of conjugated multiple bond

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: A process for preparing polyether thiocarbonate polyols comprising the step of reacting carbon disulfide and at least one alkylene oxide in the presence of a double metal cyanide catalyst and at least one H-functional starter compound, wherein before first contact with carbon disulfide the double metal cyanide catalyst has previously been contacted with at least one alkylene oxide the the invention likewise relates to a polyol obtainable by the process according to the invention.

Abstract: Method for the production of polyoxazolidinone compounds, comprising the reaction of at least one biscarbamate compound (A) with at least one bisepoxide compound (B) in the presence of at least one base (D), at least one Lewis acid catalyst (E), and optionally at least one compound (C), wherein the compound (C) comprising a mono-carbamate group, a mono-isocyanate group and/or a mono-epoxide group, and wherein the base (D) having a pKb-value of ?9. The invention is also related to the resulting polyoxazolidinone compounds.

Abstract: The invention relates to a method for producing a polyurethane polymer, comprising the step of reacting a polyol component with a polyisocyanate component, the polyol component comprising an oxymethylene polyol. The ratio of the polyol component to the polyisocyanate component is selected such that the polyurethane polymer obtained by the reaction has a content of oxymethylene groups from the oxymethylene polyol of ?11 wt. % to ?50 wt. %, preferably ?11 wt. % to ?45 wt. %, and the content of oxymethylene groups from the oxymethylene polyol is defined by means of proton resonance spectroscopy.

Abstract: The present invention relates to the use of diblock copolymers as surfactants, and to a method for producing diblock copolymers, containing a hydrocarbon-containing block A and a polyether carbonate-containing block B, by attaching alkylene oxide and carbon dioxide to H-functional starters in the presence of a double metal cyanide catalyst, characterized in that the H-functional starter has an OH functionality of 1, and the H-functional starter is selected from one or more compounds of the group of monofunctional alcohols having 10 to 20 carbon atoms, and no further catalyst is used in addition to the DMC catalyst.

Abstract: The invention relates to a process for producing polyoxymethylene block copolymers, comprising the step of activating the DMC catalyst in the presence of an OH-terminated polymeric formaldehyde starter compound by means of a defined amount of alkylene oxide, optionally followed by polymerization with alkylene oxides, if necessary in the presence of other comonomers. The invention further relates to polyoxymethylene block copolymers that can be obtained by means of such a process and to the use of these for producing polyurethane polymers.

Abstract: The invention relates to a method for adding a compound (A) to an H-functional starting compound (BH) in the presence of a catalyst, wherein the at least one compound (A) is selected from at least one group consisting of alkylene oxide (A-1), lactone (A-2), lactide (A-3), cyclic acetal (A-4), lactam (A-5), cyclic anhydride (A-6) and oxygen-containing heterocyclic compound (A-7) different from (A-1), (A-2), (A-3), (A-4) and (A-6), wherein the catalyst comprises an organic, n-protic Brønsted acid (C), wherein n?2 and is an element of the natural numbers and the degree of protolysis D is 0<D<n, with n as the maximum number of transferable protons and D as the calculated proton fraction of the organic, n-protic Brønsted acid (C). The invention further relates to an n-protic Brønsted acid (C) having a degree of protolysis D of 0<D<n, wherein n is the maximum number of transferable protons, with n=2, 3 or 4, and D is the calculated proton fraction of the organic, n-protic Brønsted acid (C).

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: 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 also relates to thermoplastic polyurethanes and to a method for the production and use thereof.

Abstract: The present invention describes a process for producing an elastomer, preferably a polyurethane-containing elastomer, by reacting a polyol component (A) comprising at least one polyether carbonate polyol (A-1) containing carbon-carbon double bonds with a component (B) which is reactive with OH groups and contains at least one compound reactive toward OH groups, preferably an isocyanate component (B-1) containing NCO groups, in the presence of a free-radical initiator (C), preferably at least one peroxide (C-1), and optionally a catalyst (D), where the molar ratio of the OH-reactive groups of component (B) reactive with groups, to the OH groups of the polyol component (A) containing carbon-carbon double bonds, is greater than 1.0. It further relates to elastomers obtainable by such a process, preferably polyurethane elastomers, the use thereof, and two-component systems for production of elastomers, preferably polyurethane elastomers.

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.