Covestro Deutschland Ag

Bayer Materialscience Ag

Bayer Intellectual Property Gmbh

Covestro LLC

Covestro Intellectual Property Gmbh & Co. Kg

Bert Klesczewski

Jörg Hofmann

Hartmut Nefzger

Klaus Lorenz

Kai Laemmerhold

Erika Bauer

Aurel Wolf

Urs Rauwald

Monika Heinz

Peter Haas

Thomas Ernst Müller

Jack R Reese

Jose F Pazos

Gundolf Jacobs

Jens Langanke

Matthaeus Gossner

Andreas Hoffmann

Sven Meyer-Ahrens

Nicole Welsch

Matthäus Gossner

Harald Knaup

Heinz-Dieter Ebert

Sebastien Triouleyre

Alice Mosbach-Rosenberger

Karsten Malsch

Michael Schneider

Angelika Schulz

Manduela Otten

Sascha Fahlenkamp

Christopher Klasen

Bernard Halupczok

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 polyether carbonate polyols, wherein (i) in a first step a polyether carbonate polyol is produced from one or more H-functional starter substances, one or more alkylene oxides, and carbon dioxide in the presence of at least one DMC catalyst, and (ii) in a second step the polyether carbonate polyol is chain-extended with a mixture of at least two different alkylene oxides in the presence of at least one DMC catalyst. The invention further relates to polyether carbonate polyols that contain a terminal mixed block of at least two alkylene oxides and to a method for producing soft polyurethane foams, wherein a polyol component containing a polyether carbonate polyol according to the invention is used.

Process for the preparation of polyether polyols

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 present invention concerns a method for producing polyurethane foams by reacting an isocyanate component with a component that is reactive to isocyanates and that comprises at least one polyether carbonate polyol, the reaction taking place in the presence of a non-amine antioxidant and an amine antioxidant. The invention also concerns polyurethane foams produced using the claimed method and the use of said foams.

Polyurethane foams based on polyether carbonate polyols

The invention relates to a method for producing polyurethane soft foam by reacting an isocyanate component with a component which is reactive towards isocyanates. The component which is reactive towards isocyanates comprises a mixture of at least one polyether carbonate polyol and a polyether polyol as the constituents. In the component which is reactive towards isocyanates, the total proportion of polyether carbonate polyols is =20 wt. % to =80 wt. % and the total proportion of polyether polyol is =20 wt. % to =80 wt. %, based on the total weight of the provided polyols. The invention further relates to a polyurethane soft foam produced using said method.

Mixtures of polyether carbonate polyols and polyether polyols for producing polyurethane soft foams

The present invention relates to a method for preparing polyether carbonate polyols by the addition of alkylene oxides and carbon dioxide onto H-functional starter compounds. The method is characterized in that at least one urethane alcohol according to formula (II) is used as an H-functional starter compound, wherein R 1 represents a linear or branched C2 to C24-alkylene which can be optionally interrupted by heteroatoms such as O, S or N and can be substituted; R2 represents a linear or branched C2 to C24-alkylene which can be optionally interrupted by heteroatoms such as O, S or N and can be substituted; R3 represents H, linear or branched C1 to C24-alkyl, C3 to C24-cycloalkyl, C4 to C24-aryl, C5 to C24-arylalkyl, C2 to C24-alkenyl, C2 to 24-alkinyl, that can each be optionally interrupted by heteroatoms such as O, S, or N and/or may each be substituted with alkyl, aryl, and/or hydroxyl.

Use of urethane alcohols for preparing polyether carbonate polyols

The present invention relates to a process for preparing polyether polyols by addition of alkylene oxides onto H-functional starter substances, characterized in that at least one urethane alcohol of formula (II) 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, Ris linear or branched Cto C-alkylene which may optionally be interrupted by heteroatoms such as O, S or N and may be substituted, R is 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, is used as H-functional starter compound. The invention further provides the polyether polyols containing a urethane group, the polyether polyols obtainable by the process according to the invention, for the use of the inventive polyether polyols for preparation of a polyurethane polymer, and the resulting polyurethane polymers.

Use of urethane alcohols for preparation of polyether polyols

The present invention relates to a process for the preparation of polyricinoleic acid ester polyols having primary hydroxyl end groups. It furthermore relates to polyricinoleic acid ester polyols obtainable according to the invention and polyurethane polymers prepared using these polyols. The process comprises the steps: a) polycondensation of ricinoleic acid until a hydroxyl number of &#x3e;0 mg of KOH/g to &#x3c;60 mg of KOH/g is reached; and b) reaction of the product obtained in step a) or of a secondary product of the product obtained in step a) comprising carboxyl groups with an epoxide of the general formula (I), wherein R1 represents hydrogen, an alkyl radical or an aryl radical, with the proviso that &#x3e;80% by weight to &#x3c;100% by weight, based on the total amount of the epoxide (I) employed, is ethylene oxide and the reaction is carried out in the presence of an amine as the catalyst.

Process for the preparation of polyricinoleic acid ester polyols having primary hydroxyl end groups

The invention relates to a process for producing polyester polyols with secondary hydroxyl end groups, including the step of the reaction of a polyester including carboxyl end groups with an epoxide of the general formula (1): wherein R1 stands for an alkyl residue or an aryl residue and the reaction is carried out in the presence of a catalyst that includes at least one nitrogen atom per molecule. The process is distinguished in that the polyester including carboxyl end groups exhibits an acid value from &#x2267;25 mg KOH/g to &#x2266;400 mg KOH/g and a hydroxyl value from &#x2266;5 mg KOH/g and in that the polyester including carboxyl end groups is produced by &#x2267;1.03 mol to &#x2266;1.90 mol carboxyl groups or carboxyl-group equivalents of an acid component being employed per mol hydroxyl groups of an alcohol. The polyester polyols obtained, including secondary hydroxyl end groups, can be used for the purpose of producing polyurethane polymers.

Process for producing polyester polyols having secondary OH end groups

The invention relates to a process for the preparation of a polyurethane polymer, comprising the step of reaction of A) polyester polyols with secondary hydroxyl end groups, which are obtainable from the reaction of a polyester comprising carboxyl end groups with an epoxide of the general formula (1): wherein R1 represents an alkyl radical or an aryl radical and wherein the polyester comprising carboxyl end groups has an acid number of from &#x2267;25 mg of KOH/g to &#x2266;400 mg of KOH/g and a hydroxyl number of &#x2266;5 mg of KOH/g, withB) polyisocyanates which are chosen from the group comprising toluoylene-diisocyanate, diphenylmethane-diisocyanate, polymeric diphenylmethane-diisocyanate, xylylene-diisocyanate, naphthylene-diisocyanate, hexamethylene-diisocyanate, diisocyanatodicyclohexylmethane and/or isophorone-diisocyanate. The invention furthermore relates to polyurethane polymers prepared by such a process.

Process for the preparation of a polyurethane polymer with secondary hydroxyl end groups comprising polyester polyols

The present invention relates to ballast which have a high stability and a long service life and to a process for the production of ballast. These ballast are suitable for railway track laying and road construction and dike systems used for example in costal protection. These ballast comprise ballast stones and polyurethane foams based on a reaction mixture of selected polyisocyanates and selected compounds with isocyanate-reactive groups.

Ballast and process for the production of ballast

The present invention relates to polyether polyol compositions containing renewable raw materials, a process for preparing visco-elastic polyurethane foams using such compositions, correspondingly prepared visco-elastic foam materials, and the use thereof.

Growing community of inventors

Kö'ln, Germany

Bert Klesczewski