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    ALDIMINE-UREA OLIGOMER
    6.
    发明公开
    ALDIMINE-UREA OLIGOMER 审中-公开

    公开(公告)号：US20240209139A1

    公开(公告)日：2024-06-27

    申请号：US18288491

    申请日：2022-04-14

    Applicant: SIKA TECHNOLOGY AG

    Inventor： Urs BURCKHARDT ,  Andreas KRAMER ,  Michael SCHLUMPF ,  Alex COUPE

    IPC: C08G18/32 ,  C08G18/12 ,  C08G18/30

    CPC classification number: C08G18/3256 ,  C08G18/12 ,  C08G18/307 ,  C08G2150/00 ,  C08G2170/00 ,  C08G2190/00

    Abstract: A process of manufacturing an aldimine preparation, characterized in that at least one aldimine of the formula (I), at least one isocyanate of the formula (II), optionally at least one alcohol of the formula (III) and water are reacted until at least 95% of all the initially present isocyanate groups are converted, whereby the initial molar ratio of aldimine groups to [isocyanate groups minus hydroxyl groups of the alcohol of formula (III)] in the reaction mixture is in the range of 2/1 to 10/1. The obtained aldimine preparation is particularly suitable for the use as latent hardener for moisture-curing polyurethane compositions. It enables moisture-curing polyurethane compositions with a very low content of diisocyanate monomers, which cure to an elastic material of surprisingly high strength, e-modulus and low surface tack.

    POLYMER CONTAINING SILANE GROUPS
    8.
    发明申请
    POLYMER CONTAINING SILANE GROUPS 有权

    公开(公告)号：US20230072857A1

    公开(公告)日：2023-03-09

    申请号：US17792876

    申请日：2021-02-03

    Applicant: SIKA TECHNOLOGY AG

    Inventor： Andreas KRAMER ,  Marcel OERTLI ,  Ursula STADELMANN ,  Sven REIMANN

    IPC: C08L75/08

    Abstract: A silane group-containing polymer obtained from reacting (i) an isocyanate group-containing polymer having an NCO content in the range of 0.3 to 4% by weight and a monomeric diisocyanate content of at most 0.3 wt. % obtained from the reaction of at least one monomeric diisocyanate with at least one polyether polyol in a molar NCO/OH ratio of at least 3/1 and subsequent removal of a major part of the unreacted monomeric diisocyanates by means of a suitable separation process, (ii) with at least one amino-, mercapto- or hydroxysilane in a stoichiometric ratio of at least 1 mole of amino-, mercapto- or hydroxysilane per mole equivalent of isocyanate groups.

    CURABLE COMPOSITION COMPRISING AN ACETAL PLASTICIZER
    9.
    发明申请
    CURABLE COMPOSITION COMPRISING AN ACETAL PLASTICIZER 有权

    公开(公告)号：US20210163667A1

    公开(公告)日：2021-06-03

    申请号：US16772922

    申请日：2019-01-24

    Applicant: SIKA TECHNOLOGY AG

    Inventor： Andreas KRAMER ,  Urs BURCKHARDT ,  Rita CANNAS

    IPC: C08G18/50 ,  C08G18/30 ,  C08G18/16 ,  C08G18/75 ,  C08G18/48 ,  C08K5/06

    Abstract: Curable compositions include at least one organic polymer which contains silane groups and/or isocyanate groups, at least one compound which contains acetal groups and has a molecular weight of at least 280 g/mol, and at least one basic catalyst. The composition is particularly storage-stable and can be readily processed. Using moisture the composition cures rapidly, and with very little residual tackiness, to form a resilient material that has good adhesive and mechanical properties, in particular a high level of malleability and elasticity, is heat resistant and exhibits hardly any odour formation or migration effects. In particular, the composition has very consistent product properties during storage in respect of viscosity, curing rate and odour.

    ALDIMINOSILANES
    10.
    发明申请
    ALDIMINOSILANES 审中-公开

    公开(公告)号：US20200148707A1

    公开(公告)日：2020-05-14

    申请号：US16614061

    申请日：2018-06-19

    Applicant: SIKA TECHNOLOGY AG

    Inventor： Urs BURCKHARDT ,  Andreas KRAMER

    IPC: C07F7/18 ,  C08G18/10 ,  C08G18/28 ,  C09D175/04 ,  C09J175/04

    Abstract: An aldiminosilane of the formula (I), to the use thereof as adhesion promoters and/or crosslinking agents, and to curable compositions including same. The aldiminosilane of the formula (I) is odorless, pH-neutral, liquid at room temperature, and has a low sensitivity to heat. The hydrolysis of the aldiminosilane proceeds relatively slowly, and the aldiminosilane is highly effective as an adhesion promoter. Furthermore, the aldiminosilane exhibits excellent compatibility with curable compositions based on isocyanates, epoxides, or silanes, whereby such compositions do not exhibit a propensity for migration effects such as bleeding or substrate soiling after being cured. In particular, isocyanate group-containing compositions containing the aldiminosilane of the formula (I) are highly storage-stable regardless of the storage temperature and the isocyanate used.

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