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    PROCESS FOR PRODUCING ELASTIC AND TEAR-RESISTANT POLYURETHANE FOAMS AND USES
    3.
    发明申请
    PROCESS FOR PRODUCING ELASTIC AND TEAR-RESISTANT POLYURETHANE FOAMS AND USES 审中-公开

    公开(公告)号：US20190218330A1

    公开(公告)日：2019-07-18

    申请号：US16245470

    申请日：2019-01-11

    Applicant: Covestro Deutschland AG

    Inventor： Jan Suetterlin ,  Marc-Stephan WEISER ,  Sascha PLUG ,  Sebastian DÖRR ,  Claudine STOYE

    IPC: C08G18/10 ,  C08G18/08 ,  C08G18/48 ,  C08G18/73

    CPC classification number: C08G18/10 ,  A61F2013/0074 ,  A61L15/26 ,  A61L15/425 ,  C08G18/14 ,  C08G18/4833 ,  C08G18/485 ,  C08G18/722 ,  C08G18/73 ,  C08G18/792 ,  C08G2101/0008 ,  C08G2101/0058 ,  C08G2101/0066 ,  C08G2101/0083 ,  C08G18/302 ,  C08L75/04

    Abstract: The invention provides a process for producing polyurethane foams, the foams thus produced and the uses thereof. In the inventive process compositions comprising A) isocyanate-functional prepolymers obtainable by the reaction of A1) aliphatic, low molecular weight diisocyanates of molar mass from 140 to 278 g/mol with A2) polyalkylene oxides having an OH functionality of two or more, A3) optionally further isocyanate-reactive components not covered by A2), B) water in an amount of at least 2% by weight, based on the total weight of the composition; C) optionally heterocyclic 4-membered or 6-membered ring oligomers of low molecular weight, aliphatic diisocyanates having a molar mass of 140 to 278 g/mol; D) optionally catalysts; E) optionally salts of weak acids, the corresponding free acids of which have a pKA in water at 25° C. of ≥3.0 and ≤14.0; F) optionally surfactants; G) optionally mono- or polyhydric alcohols or polyols, and H) optionally hydrophilic polyisocyanates obtainable by reaction of H1) low molecular weight, aliphatic diisocyanates of molar mass from 140 to 278 g/mol and/or polyisocyanates preparable therefrom and having an isocyanate functionality of 2 to 6 with H2) monofunctional polyalkylene oxides of OH number from 10 to 250 and of ethylene oxide content from 50 to 100 mol %, based on the total amount of the oxyalkylene groups present, are provided, foamed and cured, wherein the isocyanate-containing components, especially components A), C) and H), have a total isocyanate content within a range from 2% to 8% by weight and a content of urethane groups of 1.0 to 3.5 mol/kg, based in each case on the total amount of the isocyanate-containing components.

    PROCESS FOR PRODUCING LOW-SWELLING POLYUREHTANE FOAMS AND USES THEREOF
    4.
    发明申请
    PROCESS FOR PRODUCING LOW-SWELLING POLYUREHTANE FOAMS AND USES THEREOF 审中-公开

    公开(公告)号：US20190218329A1

    公开(公告)日：2019-07-18

    申请号：US16245393

    申请日：2019-01-11

    Applicant: Covestro Deutschland AG

    Inventor： Jan Suetterlin ,  Marc-Stephan Weiser ,  Sascha Plug ,  Sebastian Dörr ,  Claudine Stoye

    IPC: C08G18/10 ,  C08G18/48 ,  C08G18/73 ,  C08G18/08 ,  A61L15/26 ,  A61L15/42

    CPC classification number: C08G18/10 ,  A61F2013/0074 ,  A61L15/26 ,  A61L15/425 ,  C08G18/14 ,  C08G18/4833 ,  C08G18/485 ,  C08G18/722 ,  C08G18/73 ,  C08G18/792 ,  C08G2101/0008 ,  C08G2101/0058 ,  C08G2101/0066 ,  C08G18/302 ,  C08L75/04

    Abstract: The invention provides a process for producing polyurethane foams, the foams thus produced and the uses thereof. In the inventive process compositions comprising A) isocyanate-functional prepolymers obtainable by the reaction of A1) aliphatic, low molecular weight diisocyanates of molar mass from 140 to 278 g/mol with A2) polyalkylene oxides having an OH functionality of two or more, A3) optionally further isocyanate-reactive components not covered by A2), B) water in an amount of at least 2% by weight, based on the total weight of the composition; C) optionally heterocyclic 4-membered or 6-membered ring oligomers of low molecular weight, aliphatic diisocyanates having a molar mass of 140 to 278 g/mol; D) optionally catalysts; E) optionally salts of weak acids, the corresponding free acids of which have a pKA in water at 25° C. of ≥3.0 and ≤14.0; F) optionally surfactants; G) optionally mono- or polyhydric alcohols or polyols, and H) optionally hydrophilic polyisocyanates obtainable by reaction of H1) low molecular weight, aliphatic diisocyanates of molar mass from 140 to 278 g/mol and/or polyisocyanates preparable therefrom and having an isocyanate functionality of 2 to 6 with H2) monofunctional polyalkylene oxides of OH number from 10 to 250 and of ethylene oxide content from 50 to 100 mol %, based on the total amount of the oxyalkylene groups present, are provided, foamed and cured, wherein the isocyanate-containing components, especially components A), C) and H), have a total isocyanate content within a range from 2% to 8% by weight and a content of urethane groups of 1.0 to 3.5 mol/kg, based in each case on the total amount of the isocyanate-containing components.

    Process for producing elastic and tear-resistant polyurethane foams and uses
    6.
    发明授权
    Process for producing elastic and tear-resistant polyurethane foams and uses 有权

    公开(公告)号：US10988565B2

    公开(公告)日：2021-04-27

    申请号：US16245470

    申请日：2019-01-11

    Applicant: Covestro Deutschland AG

    Inventor： Jan Suetterlin ,  Marc-Stephan Weiser ,  Sascha Plug ,  Sebastian Dörr ,  Claudine Stoye

    IPC: C08G18/10 ,  C08G18/48 ,  C08G18/72 ,  C08G18/79 ,  C08G18/08 ,  C08G18/73 ,  A61F13/00 ,  A61L15/26 ,  A61L15/42 ,  C08G101/00

    Abstract: The invention provides a process for producing polyurethane foams, in which compositions comprising A) isocyanate-functional prepolymers obtainable by the reaction of A1) low molecular weight diisocyanates of molar mass from 140 to 278 g/mol with A2) polyalkylene oxides having an OH functionality of two or more, A3) optionally further isocyanate-reactive components not covered by A2), B) water in an amount of at least 2% by weight, based on the total weight of the composition; C) optionally heterocyclic 4-membered or 6-membered ring oligomers of low molecular weight diisocyanates having a molar mass of 140 to 278 g/mol; D) optionally catalysts; E) optionally salts of weak acids, the corresponding free acids of which have a pKA in water at 25° C. of ≥3.0 and ≤14.0; F) optionally surfactants; G) optionally mono- or polyhydric alcohols or polyols, and H) optionally hydrophilic polyisocyanates obtainable by reaction of H1) low molecular weight diisocyanates of molar mass from 140 to 278 g/mol and/or polyisocyanates preparable therefrom and having an isocyanate functionality of 2 to 6 with H2) monofunctional polyalkylene oxides of OH number from 10 to 250 and of ethylene oxide content from 50 to 100 mol %, based on the total amount of the oxyalkylene groups present, are provided, foamed and cured, wherein the isocyanate-containing components, especially components A, C and H, have a total isocyanate content within a range from 2% to 8% by weight and a content of urethane groups of 1.0 to 3.5 mol/kg, based in each case on the total amount of the isocyanate-containing components, and also the foams thus produced and the uses thereof.

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