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    HYDROSILYLATION CURE INHIBITORS AND USE THEREOF
    31.
    发明公开
    HYDROSILYLATION CURE INHIBITORS AND USE THEREOF 审中-公开

    公开(公告)号：US20230392012A1

    公开(公告)日：2023-12-07

    申请号：US18038826

    申请日：2021-11-23

    Applicant: DOW SILICONES CORPORATION ,  DOW TORAY CO., LTD.

    Inventor： Patrick BEYER ,  Michael BACKER ,  Tomoko TASAKI

    IPC: C08L83/04 ,  C08G77/12 ,  C08G77/20 ,  C08G77/08 ,  C08F222/10 ,  B29C64/124

    CPC classification number: C08L83/04 ,  C08G77/12 ,  C08G77/20 ,  C08G77/08 ,  C08F222/103 ,  C08F222/104 ,  B29C64/124 ,  C08L2312/08 ,  B33Y10/00

    Abstract: The present disclosure relates to hydrosilylation curable silicone rubber compositions having polyorganosiloxane cross-linkers containing at least two or at least three terminal silicon bonded hydrogen groups and one or more hydrosilylation cure inhibitor compounds selected from multiacrylates having at least three acrylate groups per molecule. Cured products resulting from the cure of such compositions and which may include elastomeric products are also disclosed. A hydrosilylation curable silicone composition comprises: (A) one or more polyorganosiloxanes containing at least two unsaturated groups per molecule, which unsaturated groups are selected from alkenyl and alkynyl groups and having a viscosity in a range of 1,000 to 200,000 mPa·s at 25° C.; (B) a polyorganosiloxane containing at least two terminal silicon bonded hydrogen groups; (C) at least one hydrosilylation catalyst; and (D) a hydrosilylation cure inhibitor comprising a multiacrylate compound having at least three acrylate groups per molecule.

    RAPID-CURING TWO-COMPONENT SILICONE COMPOSITION HAVING A LONGER MIXER OPEN TIME
    33.
    发明公开
    RAPID-CURING TWO-COMPONENT SILICONE COMPOSITION HAVING A LONGER MIXER OPEN TIME 审中-公开

    公开(公告)号：US20230357510A1

    公开(公告)日：2023-11-09

    申请号：US18026158

    申请日：2021-11-29

    Applicant: SIKA TECHNOLOGY AG

    Inventor： Riccardo SUTER

    IPC: C08G77/08 ,  C08G77/18

    CPC classification number: C08G77/08 ,  C08G77/18 ,  C08G2150/00 ,  C08G2170/00 ,  C08G2190/00

    Abstract: A two-component silicone composition including a component (A) including at least one hydroxyl-terminated polydiorganosiloxane (P); preferably at least one filler; between 0.05% and 5.0% by weight of emulsified water, based on component (A); and a component (B) including at least one noncondensable polydiorganosiloxane (W) as a plasticizer; at least one organosilane (V) as a crosslinker; at least one catalyst (K) for the crosslinking of polydiorganosiloxanes; wherein all organosilanes (V) preferably have the same hydrolyzable alkoxysilane groups, preferably methoxysilane groups; and catalyst (K) is a tin complex having two mercaptide ligands of formula (V), where ligands (L1) are each independently alkyl mercaptides coordinated via sulfur, especially C6 to C16 alkyl mercaptides, where ligands (L1) optionally have methyldialkoxysilane groups, preferably methyldimethoxysilane groups, and ligands (L2) are each independently alkyl ligands, especially C6 to C14 alkyl ligands; and component (B) contains less than 5% by weight of carbon black based on component (B).

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