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    TWO-PART CONDENSATION CURABLE SILICONE COMPOSITIONS AND THEIR APPLICATIONS
    1.
    发明公开
    TWO-PART CONDENSATION CURABLE SILICONE COMPOSITIONS AND THEIR APPLICATIONS 审中-公开

    公开(公告)号：US20230391960A1

    公开(公告)日：2023-12-07

    申请号：US18036048

    申请日：2021-11-16

    申请人： DOW SILICONES CORPORATION

    发明人： Frederic GUBBELS

    IPC分类号： C08G77/58 ,  C08K5/541

    CPC分类号： C08G77/58 ,  C08K5/541

    摘要： Two-part condensation curable silicone compositions and their applications are provided. Also provided is a new titanium-based reaction product, which, because of its incorporation as a catalyst, is able to provide compositions having both improved stability in the presence of water and accelerated cure processes when compared to conventional titanium catalysts. The titanium-based reaction product is obtained or obtainable from a process comprising the steps of: (i) mixing a first ingredient, an alkoxy titanium compound having from 2 to 4 alkoxy groups with a second ingredient, a linear or branched polydiorganosiloxane polymer having at least two terminal silanol groups per molecule; (ii) enabling the first and second ingredients to react together by stirring under vacuum to form a reaction product; and collecting the reaction product of step (ii).

    Aqueous pretreatment for bonded joints with increased heat stability
    3.
    发明授权
    Aqueous pretreatment for bonded joints with increased heat stability 有权

    公开(公告)号：US11479676B2

    公开(公告)日：2022-10-25

    申请号：US16495780

    申请日：2018-05-09

    申请人： SIKA TECHNOLOGY AG

    发明人： Reto Dohner ,  Sara Fornera

    IPC分类号： C09D5/00 ,  C09D7/63 ,  C03C17/30 ,  C08G77/14 ,  C08G77/28 ,  C08G77/58 ,  C08K5/09 ,  C08K5/17 ,  C08K5/3415 ,  C09D183/08

    摘要： An aqueous composition including: a) at least one epoxy silane containing at least one epoxy group and at least one hydrolysable group bound to Si, b) at least one non-ionic wetting agent and either c1) between 0.2 and 2 wt. % of at least one mercapto silane containing at least one mercapto group and at least one hydrolysable group bound to Si, and as many water-soluble acids as required for the pH of resulting composition to be between 1 and 6, on the condition that epoxy silane content amounts to between 0.2 and 1 wt. %, or c2) between 0.1 and 1 wt. % of a water-soluble organotitanate, in relation to entire weight of aqueous composition, and as many water-soluble bases as required for the pH of resulting composition to be between 8 and 14, on the condition that the epoxy silane content amounts to between 0.2 and 0.5 wt. %.

    Soluble corrosion resistant sol-gel
    7.
    发明授权
    Soluble corrosion resistant sol-gel 有权

    公开(公告)号：US10926237B2

    公开(公告)日：2021-02-23

    申请号：US16226992

    申请日：2018-12-20

    申请人： THE BOEING COMPANY

    发明人： Waynie M. Schuette ,  Patrick J. Kinlen

    IPC分类号： B01J13/00 ,  C08G77/58 ,  C09D5/08 ,  C09D183/14 ,  C09D7/63 ,  C09D163/00 ,  C09D175/04 ,  C23C18/04 ,  C23C18/12 ,  C08K5/00

    摘要： Aspects described herein generally relate to a sol-gel that is the reaction product of an organosilane, a metal alkoxide, an acid, and chromium (III) salt and/or a lanthanide salt having a solubility of about 1 gram or greater per gram of sol-gel at 23° C. The lanthanide salt includes a cation and a ligand. The cation can be lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, yttrium, cobalt, calcium, strontium, barium, and zirconium. A ligand can be a nitrate, a trifluoromethane sulfonate, a sulfate, a phosphate, a hydroxide, or hydrate forms thereof. The chromium (III) salt includes a cation and a ligand. The cation is chromium (III) and the ligand can be a nitrate, a trifluoromethane sulfonate, a sulfate, a phosphate, a hydroxide, or hydrate forms thereof.