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    Endcapped Curable Polyorganosiloxanes
    3.
    发明申请
    Endcapped Curable Polyorganosiloxanes 有权

    公开(公告)号：US20210054148A1

    公开(公告)日：2021-02-25

    申请号：US17091269

    申请日：2020-11-06

    申请人： Henkel AG & Co. KGaA

    发明人： Therese Hemery ,  Helene Boudet ,  Johann Klein

    IPC分类号： C08G77/12 ,  C09J183/04

    摘要： The invention relates to curable polyorganosiloxanes with special silicon-containing terminal groups and curable compositions based on these polyorganosiloxanes, a capped adhesion promoter, and a curing catalyst. These compositions have improved adhesion properties and excellent storage stability. The invention also relates to the use thereof.

    Preparation of Polysiloxane Polyalkyleneglycol Brush Copolymers
    9.
    发明申请
    Preparation of Polysiloxane Polyalkyleneglycol Brush Copolymers 有权

    公开(公告)号：US20210292488A1

    公开(公告)日：2021-09-23

    申请号：US17338123

    申请日：2021-06-03

    申请人： Henkel AG & Co. KGaA

    发明人： Andrea Gutacker ,  Johann Klein ,  Annika Dietrich ,  Esteban Mejia ,  Therese Hemery ,  Nayereh Mohebbati

    IPC分类号： C08G77/46

    摘要： The present invention relates a hydroxyl-functionalized unimodal polysiloxane polyalkyleneglycol brush copolymer of the structure [A(-X—B)]s, wherein: A represents said polysiloxane backbone; B represents said polyalkyleneglycol side chain; X is a linker group characterized by including the moiety Si—C—C— of which said Si is a part of the polysiloxane backbone A; and s is an integer of from 1 to 100, wherein the polysiloxane backbone A contains less than 500 ppm mol % of SiH moiety based on the total moles of the silicon atom which constitutes the polysiloxane backbone, and said copolymer has a polydispersity index of from 1.3 to 5.0; and a method for producing said hydroxyl-functionalized unimodal polysiloxane polyalkyleneglycol brush copolymer.

    Method for Preparing Halogen-Functionalized Polysiloxanes
    10.
    发明申请
    Method for Preparing Halogen-Functionalized Polysiloxanes 有权

    公开(公告)号：US20210292486A1

    公开(公告)日：2021-09-23

    申请号：US17335258

    申请日：2021-06-01

    申请人： Henkel AG & Co. KGaA

    发明人： Andrea Gutacker ,  Johann Klein ,  Annika Dietrich ,  Esteban Mejia ,  Therese Hemery

    IPC分类号： C08G77/385 ,  B01J23/42 ,  C08G77/12 ,  C08G77/08 ,  C08G77/04

    摘要： The present invention relates to a procedure in which a functionalized polysiloxane is synthesized in the presence of a platinum catalyst, and halogen-functionalized polysiloxanes obtained according to the procedure. The procedure is defined herein by reacting a) at least one polysiloxane comprising at least one hydrogen atom bonded to a silicon atom; b) at least one heterocyclic compound; and c) at least one halogen-containing compound, wherein the reaction is catalyzed by at least one platinum catalyst. The synthetic pathway is described as a halosilation reaction in which a heterocyclic molecule is ring-opened in the presence of a platinum catalyst and a halogen source, resulting in a formal insertion of the opened heterocycle into the SiH bond. On the final product, the heteroatom of the former heterocycle is bonded to the silicon atom from the former hydrosiloxane moiety while the halogen is bonded to the last carbon atom of the opened chain.