Low-modulus silylated polyurethanes

    公开(公告)号:US10370570B2

    公开(公告)日:2019-08-06

    申请号:US14741758

    申请日:2015-06-17

    Abstract: A method for producing a silylated polyurethane that comprises the following steps: (1) reacting at least one polyether polyol having a number average molecular weight of at least 2,000 g/mol with at least one polyisocyanate in the presence of at least one solvent; (2) reacting the reaction product of step (1) with at least one silane of formula (I) A-R—SiXYZ (I), where A means —NH2 or —NHB, wherein B stands for a branched or linear alkyl radical with 1-12 C atoms, possibly having functional groups, a cyclic alkyl radical having 5-8 C atoms, or an aryl radical, R is a divalent hydrocarbon radical having 1-12 C atoms, and X, Y, Z are substituents on the Si atom and are independently of each other C1-C8 alkyl, C1-C8 alkoxy or C1-C8 acyloxy groups, wherein at least one of radicals X, Y, Z is a C1-C8 alkoxy or C1-C8 acyloxy group, in the presence of at least one solvent. Further disclosed is a silylated polyurethane that can be produced by the method, a curable composition based thereon, and the use of such a composition as an adhesive, sealant and/or coating material.

    Silylated Polyurethanes, Their Preparation and Use

    公开(公告)号:US20190031812A1

    公开(公告)日:2019-01-31

    申请号:US16152599

    申请日:2018-10-05

    Abstract: A silylated polyurethane obtainable by a process comprising the following steps: (a) reacting at least one polyol with at least one triisocyanate to form a hydroxyl-terminated polyurethane prepolymer, and (b) reacting said polyurethane prepolymer with at least one isocyanatosilane of the formula (1): OCN—R—Si—(X)m(R1)3-m, wherein m is 0, 1 or 2, each R1 is independently from each other a hydroxyl group, an alkoxy group having 1 to 10 carbon atoms, an acyloxy group having 1 to 10 carbon atoms, or —OCH(R2)COOR3, wherein R2 is hydrogen or an alkyl group having 1 to 4 carbon atoms and R3 is a straight-chain or branched alkyl group having 1 to 8 carbon atoms, each X is independently from each other and optionally substituted hydrocarbon group having 1 to 10 carbon atoms, which can be interrupted by at least one heteroatom, and R is a difunctional organic group, to endcap the hydroxyl groups on said prepolymer with said isocyanatosilane. The silylated polyurethanes are suitable for use in a preparation as an adhesive, sealant, or coating agent.

    Silylated polyurethanes and methods for preparing thereof

    公开(公告)号:US11560445B2

    公开(公告)日:2023-01-24

    申请号:US16894290

    申请日:2020-06-05

    Abstract: The invention relates to a silylated polyurethane obtainable by reacting: d) at least one polyol having a number average molecular weight of from 1000 to 50,000 g/mol; e) at least one polyisocyanate, preferably diisocyanate; and f) at least one tertiary hydroxyl functional alkoxysilane of the general formula (I) wherein R1 is selected from the group consisting of hydrogen and a linear or branched, substituted or unsubstituted hydrocarbon residue having 1 to 20 carbon atoms; R2 and R3 are same or different and are, independent from one another, selected from a linear or branched, substituted or unsubstituted hydrocarbon residue having 1 to 20 carbon atoms; R4 is selected from a linear or branched, substituted or unsubstituted hydrocarbon residue having 1 to 20 carbon atoms; R5 is selected from a linear or branched, substituted or unsubstituted hydrocarbon residue having 1 to 20 carbon atoms; R6 and R7 are same or different and are, independent from one another, selected from a linear or branched, substituted or unsubstituted hydrocarbon residue having 1 to 20 carbon atoms; and n is 1, 2 or 3, a method for preparing thereof, a curable composition comprising the thereby obtained silylated polyurethane, and its use.

    Paramagnetic titanium mixtures as vulcanization catalysts

    公开(公告)号:US11370916B2

    公开(公告)日:2022-06-28

    申请号:US16890994

    申请日:2020-06-02

    Abstract: The invention relates to a curable composition comprising a) at least one polymer having at least one silicon-containing group of formula (1) —Si(R1)k(Y)3-k  (1), wherein each R1 is independently selected from a hydrocarbon radical containing 1 to 20 C atoms or a triorganosiloxane group of formula —O—Si(R2)3, wherein each R2 is independently selected from a hydrocarbon radical containing 1 to 20 C atoms; each Y is independently selected from a hydroxy group or a hydrolysable group; and k is 0, 1, or 2; b) at least one mixture of paramagnetic titanium complexes, characterized by a Landé g-factor of less than 2 detected by Electron Paramagnetic Resonance Spectroscopy; c) optionally, at least one compound which has a hydrolysable silicon-containing group and a molecular weight in the range of 100 to 1000 g/mol, an aminosilane preparations containing these compositions thereof.

    Tertiary Hydroxyl Functional Alkoxysilanes and Methods for Preparing Thereof

    公开(公告)号:US20200299314A1

    公开(公告)日:2020-09-24

    申请号:US16898579

    申请日:2020-06-11

    Abstract: Disclosed is a tertiary hydroxyl functional alkoxysilane of the general formula (I) wherein R1 is selected from the group consisting of hydrogen and a linear or branched, substituted or unsubstituted hydrocarbon residue having 1 to 20 carbon atoms; R2 and R3 are same or different and are, independent from one another, selected from a linear or branched, substituted or unsubstituted hydrocarbon residue having 1 to 20 carbon atoms; R4 is selected from a linear or branched, substituted or unsubstituted hydrocarbon residue having 1 to 20 carbon atoms; R5 is selected from a linear or branched, substituted or unsubstituted hydrocarbon residue having 1 to 20 carbon atoms; R6 and R7 are same or different and are, independent from one another, selected from a linear or branched, substituted or unsubstituted hydrocarbon residue having 1 to 20 carbon atoms; and n is 1, 2 or 3, a method for preparing thereof, and the use of the tertiary hydroxyl functional alkoxysilane of the general formula (I).

    Highly Active Double Metal Cyanide Compounds

    公开(公告)号:US20210122878A1

    公开(公告)日:2021-04-29

    申请号:US17123758

    申请日:2020-12-16

    Abstract: The present invention is directed to supported catalyst having utility in the polymerization and co-polymerization of epoxide monomers, said supported catalyst having the general Formula (I): [DMCC]*b Supp  (I) wherein: [DMCC] denotes a double metal cyanide complex which comprises a double metal cyanide (DMC) compound, at least one organic complexing agent and a metal salt; Supp denotes a hydrophobic support material; and, b represents the average proportion by weight of said support material, based on the total weight of [DMCC] and Supp, and is preferably in the range 1 wt. %≤b≤99 wt. %.

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