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    Process for the Preparation of Hydroxyl-Functionalized Polysiloxanes
    33.
    发明申请
    Process for the Preparation of Hydroxyl-Functionalized Polysiloxanes 审中-公开

    公开(公告)号：US20190322808A1

    公开(公告)日：2019-10-24

    申请号：US16441451

    申请日：2019-06-14

    Applicant: Henkel AG & Co. KGaA

    Inventor： Marleen Winterberg ,  Marta Woznicka ,  Annika Dietrich ,  Esteban Mejia ,  Udo Kragl ,  Christina Despotopoulou ,  Ralf Dunekake ,  David Briers ,  Johann Klein ,  Henrik Lund

    IPC: C08G77/16 ,  C08G77/08 ,  C07F7/08

    Abstract: A method for producing a hydroxyl-functionalized polysiloxane having secondary or tertiary hydroxyl groups, said method comprising the steps of: i) reacting a hydroxyalkyl allyl ether having a secondary or tertiary alcohol group with a siloxane under anhydrous conditions and under transition metal catalysis, said hydroxylalkyl allyl ether conforming to Formula (I) wherein n is 0, 1, 2, 3, 4 or 5, preferably 0; m is 1, 2, 3, 4 or 5, preferably 1; spacer group A is constituted by a covalent bond or a C1-C20 alkylene group; R1 is hydrogen, a C1-C8 alkyl group, a C3-C10 cycloalkyl group, a C6-C18 aryl group or an aralkyl group; Ra, Rb, Rc, Rd, R2, R3, R4 and R5 may be the same or different and each is independently selected from hydrogen, a C1-C8 alkyl group, a C6-C18 aryl group or a C6-C18 aralkyl group, with the proviso that at least one of R3 and R4 is not hydrogen; and said siloxane conforming to Formula (II) wherein m is 1, 2, 3, 4 or 5, preferably 1; R6, R7, R8 and R9 may be the same or different and each represent a C1-C8 alkyl group, a C3-C10 cycloalkyl group, a C6-C18 aryl group or a C6-C18 aralkyl group; and ii) in the presence of the reaction product of step i), performing a ring opening polymerization of at least one cyclic siloxane monomer.

    Low-modulus silylated polyurethanes
    34.
    发明授权
    Low-modulus silylated polyurethanes 有权

    公开(公告)号：US10370570B2

    公开(公告)日：2019-08-06

    申请号：US14741758

    申请日：2015-06-17

    Applicant: Henkel AG & Co. KGAA

    Inventor： Lars Zander ,  Helmut Loth ,  Marc Pascal Burmeister ,  Rolf Tenhaef ,  Johann Klein ,  Jan-Erik Damke

    IPC: C08G18/08 ,  C08G18/10 ,  C08G18/12 ,  C08K5/00 ,  C09J175/08 ,  C09K3/10

    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
    35.
    发明申请
    Silylated Polyurethanes, Their Preparation and Use 审中-公开

    公开(公告)号：US20190031812A1

    公开(公告)日：2019-01-31

    申请号：US16152599

    申请日：2018-10-05

    Applicant: Henkel AG & Co. KGaA

    Inventor： Ralf Baetzgen ,  Jan-Erik Damke ,  David Briers ,  Johann Klein

    IPC: C08G18/10 ,  C08G18/79 ,  C08G18/48 ,  C08G18/22 ,  C08G18/71

    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.

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