Covestro Deutschland Ag

Bayer Materialscience Ag

Bayer Aktiengesellschaft

Adhesys Medical Gmbh

Bayer Corporation

Bayer Intellectual Property Gmbh

Medical Adhesive Revolution Gmbh

Bayer Materialscience, LLC

Covestro Intellectual Property Gmbh & Co. Kg

Getzner Werkstoffe Holding Gmbh

Hartmut Nefzger

Erika Bauer

Klaus Lorenz

Jörg Hofmann

Bert Klesczewski

Heike Heckroth

Jens Krause

Kai Laemmerhold

Jorg Hofmann

Aurel Wolf

Christoph Eggert

Manfred Schmidt

Erhard Michels

Christian Wamprecht

Hans-Josef Laas

Reinhard Halpaap

Jens Langanke

Werner Rasshofer

James W Rosthauser

Walter Meckel

Bernd Quiring

Wolfgang Kaufhold

Gerhard Klein

Robert L Cline

Edward P Browne

Christoph Gürtler

Helmut Reiff

Frank Richter

Thomas Ernst Müller

Stefan Lindner

Sebastian Dörr

Siegfried R Waldvogel

Dorota Greszta-Franz

Joachim Wagner

Rolf William Albach

Thomas Munzmay

Florian Hupka

Matthias Wohak

Andreas Ruckes

Hans-Georg Pirkl

Reinhard Albers

Ulrich Liman

Henricus Peerlings

Marcel Schornstein

Stefan Penninger

Torsten Hagen

Andreas Hoffmann

Yi Hua Shen

Eduard Mayer

Sven Meyer-Ahrens

James-Michael Barnes

Urs Rauwald

Johannes Van De Braak

Jürgen Schloβmacher

Persefoni Hilken

Stephan Reiter

Stefanie Braun

Stephan Schleiermacher

Uwe Kuenzel

Lutz Brassat

Petra Venner

Monika Haselbach

Nicole Welsch

Monika Heinz

Harald Knaup

Michael Traving

Hans-Dieter Ruprecht

Torsten Heinemann

Hans J Scholl

Paul Heinz

Wolfgang Bräuer

Gernot Jäger

Peter Nordmann

Rolf Roers

Werner Jenninger

Ronald P Taylor

Swantje Behnken

Evelyn Peiffer

Karl-Heinz Dorner

Ernst Felske

Lars Krueger

Markus Broich

Stephanie Vogel

Gesa Behnken

Norbert Hahn

Niklas Meine

Jeffrey A Dodge

Markus Meuresch

Natalie Bittner

Zhiping Zhou

Michael Schedler

Jochen Norwig

Lukas Reisky

Michael Baecker

Jürgen Schlossmacher

Silvia Kasperek

Rene Abels

James Michael Barnes

Thomas Schultz

Heinrich Lutz

The present invention relates to new urethanases for the enzymatic breakdown of polyurethanes and to an enzymatic process for the complete breakdown of polyurethanes into defined monomers.

Urethanases for the enzymatic degradation of polyurethanes

The present invention relates to novel high-value polycarbonate polyols, to processes for the production thereof, to polyisocyanate prepolymers obtainable therefrom and also polyurethane (PUR) and polyurethane urea elastomers which under particularly demanding applications show unique combinations of processing characteristics, hydrolysis and oxidation stability, mechanical and dynamic mechanical properties.

Polycarbonate polyols, polyisocyanate prepolymers and polyurethane and polyurethane urea elastomers based thereon

A process for producing rigid PUR/PIR foams via the reaction of a reaction mixture comprising A1 an isocyanate-reactive component, A2 a flame retardant, A3 a blowing agent, A4 a catalyst, and A5 optionally auxiliaries and additives with B an organic polyisocyanate component. Component A1 comprises a diurethane diol A1.1 and a compound A1.2 selected from the group consisting of polyether polyol, polyester polyol, polyether carbonate polyol, and polyether ester polyol. Also disclosed is a rigid PUR/PIR foam, an insulating material, a composite element, and a mixture.

Flame-retardant polyurethane rigid foams

A process for producing rigid PUR/PIR foams comprising A1 an isocyanate-reactive component, A2 a flame retardant, A3 a blowing agent, A4 a catalyst, A5 optionally auxiliaries and additives, and B an organic polyisocyanate component. Component A1 comprises a triurethane triol A1.1 and a compound A1.2 selected from the group consisting of polyether polyol, polyester polyol, polyether carbonate polyol, and polyether ester polyol. Also disclosed is a rigid PUR/PIR foam, an insulating material, a composite element, and a mixture.

Flame-retarded rigid polyurethane foams

The present invention relates to a method for producing polyurethane foams by reacting an isocyanate component with an isocyanate-reactive component comprising at least one polyethercarbonate polyol, the reaction taking place in the presence of a component K selected from one or more compounds from the group consisting of K1 esters of mono- or polybasic carboxylic acids whose (first) dissociation has a pKa of 0.5 to 4.0, K2 mono-, di- and polysulfonates of mono- and polyfunctional alcohols, and K3 one or more compounds from the group consisting of K 3.1 esters of phosphoric acid, phosphonic acid, phosphorous acid, phosphinic acid, phosphonous acid and phosphinous acid, these esters each containing no P&#x2014;OH group, K3.2 oligomeric alkyl phosphates of the general formula (II), where a is an integer from 1 to 10, b is an integer from 1 to 10, R1, R2, R3 and R4 are alkyl groups having at least one carbon, and R1, R2, R3 and R4 are alike or, independently of one another, different, and R5 is a linear alkylene group having at least two carbons or is a branched alkylene group having at least three carbons, and K3.3 comprises oligomeric alkyl phosphates of the general formula (III), where a is an integer from 1 to 10, b is an integer from 1 to 10, R1, R4 and R5 are linear alkylene groups having at least two carbons or are branched alkylene groups having at least three carbons, and R1, R4 and R5 are alike or, independently of one another, different, and R2 and R3 are alkyl groups having at least one carbon, and R2 and R3 are alike or, independently of one another, different. The invention also relates to polyurethane foams produced by the method of the invention and to the use thereof.

Polyurethane foams based on polyethercarbonate polyols

The invention relates to a method for producing PUR/PIR rigid foam materials, having the steps of reacting at least one polyester polyol (a), which can be obtained by reacting a. I.) at least one cyclic carboxylic acid anhydride; a.2.) at least one low-molecular dial with a molecular mass of 62 to 450 Da; and a.3.) at least one alkylene oxide; by esterifying the components a.I.) and a.2.) and subsequently oxalkylating the resulting carboxylic acid half-ester using component a.3.); wherein at least the oxalkylation is carried out using a.4.) at least one amine catalyst in which (the) nitrogen atom(s) is/are part of an aromatic ring system, with (b) at least one polyisocyanate-containing component, (c) at least one propellant, (d) at least one or more catalysts, (e) optionally at one flameproofing agent and/or other auxiliary agents, and (f) optionally at least one additional compound with at least two groups which are reactive towards isocyanates and which differ from polyester polyol (a). The invention also relates to a PUR/PIR rigid foam material which can be obtained using a method according to the invention, to a composite element comprising the PUR/PIR rigid foam material according to the invention, at least one cover layer selected from concrete, wood, press board, aluminum, copper, steel, stainless steel, paper, non-wovens, and plastic, and multilayer composites or a combination thereof. The invention also relates to the use of the PUR/PIR rigid foam materials according to the invention or the composite element according to the invention for heat damping.

PUR/PIR rigid foams made of polyaddition oligoesters

The invention relates to a method for producing polyurethane foams by reacting the following components A a polyol component containing A1 40 to 100 parts by weight of polyether carbonate polyol with a hydroxyl number according to DIN 53240-1 June 2013 of 20 mg KOH/g to 120 mg KOH/g, A2 0 to 60 parts by weight of polyether polyol with a hydroxyl number according to DIN 53240-1 June 2013 of 20 mg KOH/g to 250 mg KOH/g and an ethylene oxide content of 0 to 60 wt. %, wherein polyether polyol A2 is free from carbonate units, B B1 a catalyst and B2 optionally auxiliary and additional materials, C water and/or physical blowing agents with D di- and/or polyisocyanates, wherein the production occurs at a characteristic value of 90 to 120, characterised in that the component A contains a component A5 of 0.05 to 10.00 parts by weight of polyester polyol, in relation to the sum of the parts by weight of the components A1+A2=100 parts by weight, said polyester polyol containing units derived from malonic acid.

The invention relates to a method for producing polyether carbonate polyols by adding alkylene oxides and carbon dioxide to an 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 (&#x3b3;) alkylene oxide and carbon dioxide are added to an H-functional starter substance in a reactor with a total pressure (absolute) of 5 to 120 bar 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, and a reaction mixture containing the polyether carbonate polyol is obtained, (&#x3b4;) the reaction mixture obtained in step (&#x3b3;) remains in the reactor or is optionally continuously transferred to a downstream reactor at a starting total pressure (absolute) of 5 to 120 bar, the content of free alkylene oxide in the reaction mixture being reduced in the course of a downstream reaction in each case, and the total pressure (absolute) can be reduced by up to 50% during the step (&#x3b4;), and (&#x3b6;) the content of highly volatile components of the obtained reaction mixture is thermally reduced at a temperature of 80&#xb0; C. to 200&#xb0; C. The invention is characterized in that (&#x3b5;) the reaction mixture resulting from step (&#x3b4;) is brought to a total pressure (absolute) of &#x2264;2.0 bar, preferably 0.5 bar to 2.0 bar, particularly preferably 0.9 bar to 1.1 bar, prior to step (&#x3b6;) and then left at a temperature of 80 to 180&#xb0; C. for a dwell time of at least 0.5 h. After the dwell time has expired, 5 to 100 ppm of component K is added to the resulting mixture, component K being selected from at least one compound which contains a phosphorus-oxygen-hydrogen group.

Method for producing polyether carbonate polyols

The invention relates to a method for producing polyether carbonate polyols, (i) one or more alkylene oxide(s) and carbon dioxide being added to one or more H-functional starter substance(s) 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, a reaction mixture containing the polyether carbonate polyol being obtained, characterized in that (ii) at least one component K is added to the obtained reaction mixture containing the polyether carbonate polyol, wherein component K is selected from at least one compound that contains a phosphorus-oxygen bond or a compound of phosphorus that can form one or more P&#x2014;O bonds by reaction with OH-functional compounds.

Polyurea systems comprising: (a) an amino-functional aspartic ester of the general formula (I) wherein X represents an n-valent organic radical derived from a corresponding n-functional primary amine X(NH), Rand Reach independently represent an organic radical having no Zerevitinov active hydrogens and n represents an integer of at least 2; and (b) an isocyanate functional prepolymer having a residual monomer content of less than 1% by weight, the prepolymer prepared by reacting: (b1) an aliphatic isocyante; and (b2) a polyol component having a number average molecular weight of &#x2265;400 g/mol and an average OH functionality of 2 to 6, wherein the polyol component comprises one or more constituents selected from the group consisting of polyester polyols, polyester-polyether polyols and mixtures thereof; processes for making the same; postoperative adhesions barriers prepared therewith and dispensing systems for such polyurea systems.

Polyurea systems, processes for preparing the same and use thereof for postoperative adhesion barriers

The present invention relates to a method for producing polyether carbonate polyols by attaching alkyloxides and carbon dioxide to H-functional starter compounds, characterized in that at least one alcohol containing at least two urethane groups is used as the H-functional starter compound. The invention further relates to polyether carbonate polyols containing a structural unit of the formula (IV), wherein: Rdenotes a linear or branched Cto C-alkylene, which optionally can be interrupted by heteroatoms of O, S or N and can be substituted, preferably by CH&#x2014;CHor CH&#x2014;CH(CH); Rdenotes a linear or branched Cto C-alkylene, Cto C-cycloalkylene, Cto C-alkylene, Cto C-aralkylene, Cto C-alkenylene, Cto C-alkynylene, each of which can optionally be interrupted by heteroatoms such as O, S or N and/or can be substituted with alkyl, aryl and/or hydroxyl groups, preferably Cto C-alkyls; Rdenotes H, linear or branched Cto C-alkyl, Cto C-cycloalkyl, Cto C-aryl, Cto C-aralkyl, Cto C-alkenyl, Cto C-alkynyl, each of which can optionally be interrupted by heteroatoms such as O, S or N and/or can each be substituted with alkyl, aryl and/or hydroxyl groups, preferably H; Rdenotes H, a linear of branched Cto C-alkyl, Cto C-cycloalkyl, Cto C-aryl, Cto C-aralkyl, Cto C24-alkenyl, C2 to C-alkynyl, each of which can optionally be interrupted by heteroatoms such as O, S or N and/or can each be substituted with alkyl, aryl and/or hydroxyl groups, preferably H; Rdenotes a linear or branched Cto C-alkylene, which can optionally be interrupted by heteroatoms such as O, S or N and can be substituted, preferably by CH&#x2014;CHor CH&#x2014;CH(CH); and wherein R1 to R5 can be identical or different to each other.

Use of alcohols which contain at least two urethane groups for producing polyether carbonate polyols

The present invention relates to a process for preparing polyether polyols by adding alkylene oxides onto H-functional starter compounds, characterized in that at least one alcohol containing at least two urethane groups is used as H-functional starter compound. The invention further provides the polyether polyols containing a structural unit of the formula (IV) where Ris linear or branched Cto C-alkylene which may optionally be interrupted by heteroatoms such as O, S or N and may be substituted, preferably CH&#x2014;CHor CH&#x2014;CH(CH), Ris linear or branched Cto C-alkylene, Cto C-cycloalkylene, Cto C-arylene, Cto C-aralkylene, Cto C-alkenylene, Cto C-alkynylene, each of which may optionally by interrupted by heteroatoms such as O, S or N and/or may each be substituted by alkyl, aryl and/or hydroxyl, preferably Cto CM alkylene, Ris H, linear or branched Cto C-alkyl, Cto C-cycloalkyl, Cto C-aryl, Cto C-aralkyl, Cto C-alkenyl, Cto C-alkynyl, each of which may optionally be interrupted by heteroatoms such as O, S or N and/or each of which may be substituted by alkyl, aryl and/or hydroxyl, preferably H, R, is H, linear or branched O to C-alkyl, C-cycloalkyl, Cto C-aryl, Cto C-aralkyl, Cto C-alkenyl, Cto C-alkynyl, each of which may be interrupted by heteroatoms such as O, S or N and/or each of which may be substituted by alkyl, aryl and/or hydroxyl, preferably H, IV is linear or branched Cto C-alkylene which may optionally be interrupted by heteroatoms such as O, S or N and may be substituted, preferably CH&#x2014;CHor CH&#x2014;CH(CH), and where Rto Rmay be identical or different from one another, and the polyether polyols obtainable by the process according to the invention.

Use of alcohols containing at least two urethane groups for preparation of polyether polyols

The invention concerns a new polyol composition from isopropylidenediphenol-based polyethers, which are used in an advantageous manner for the production of polyurethane-polyisocyanurate (PUR-/PIR) rigid foams, as well as their production and use in PUR/PIR rigid foams.

Rigid PUR/PIR foams of isopropylidenediphenol-based polyethers

The invention relates to a process for producing polyether carbonate polyols through an addition reaction of alkylene oxides and carbon dioxide onto one or more H-functional starter substances 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, characterized in that one or more H-functional starter substances containing at least 1000 ppm of component (K) is/are continuously metered into the reactor during the reaction, where component (K) is selected from at least one compound containing a phosphorus-oxygen bond and a phosphorus compound that can form one or more P&#x2014;O bonds through reaction with OH-functional compounds.

The present invention relates to a process for the preparation of a hydroxy-amino polymer, comprising the steps: a) reacting an H-functional starter compound carrying at least one Zerewitinoff-active H atom with an unsaturated cyclic carboxylic acid anhydride and at least one alkylene oxide compound to give a hydroxyl-group-carrying prepolymer, b) adding a primary amine and/or ammonia to the double bonds of the hydroxyl-group-carrying prepolymer obtained according to step a) to give the hydroxy-amino polymer, wherein the reaction of the H-functional starter compound with the unsaturated cyclic carboxylic acid anhydride and/or the addition of the alkylene oxide compound is carried out using a double metal cyanide catalyst (DMC catalyst). The invention relates additionally to a hydroxy-amino polymer obtainable by the above-mentioned process, wherein the ratio of the amount of alkylene oxide compound to the amount of carboxylic acid anhydride is at least 1.1:1, and further to the use of this hydroxy-amino polymer in the preparation of a polyurethane urea polymer.

Hydroxy-aminopolymers and method for producing same

Growing community of inventors

Pulheim, Germany

Hartmut Nefzger