Oximosilicon-modified silicone sealant compositions
    7.
    发明公开
    Oximosilicon-modified silicone sealant compositions 失效
    氧化肟修饰剂Silicondichtmassen-Zusammensetzungen

    公开(公告)号:EP0798338A2

    公开(公告)日:1997-10-01

    申请号:EP97301780.9

    申请日:1997-03-17

    IPC分类号: C08K5/54 C08L83/04

    摘要: A method is disclosed of forming a seal between two or more non-porous substrates by adding an oximosilicon compound to a prepared roomtemperature-vulcanizable silicone sealant composition which is comprised of an alkoxy ended polydiorganosiloxane, a crosslinker having silicon-bonded methoxy or ethoxy, a filler, a titanate catalyst, and by-produced methanol or ethanol that is obtained during the manufacture of the silicone sealant composition. applying the sealant composition to at least two non-porous substrates forming an assembly of an uncured sealant composition bonding them together, subjecting the assembly to conditions which would ordinarily form detrimental bubbles if the oximosilicon compound were not present, and completely curing the composition to form an assembly of at least two non-porous substrates bonded by cured sealant that is essentially free of detrimental bubbles. Such a method is valuable in forming gaskets which are used in the internal combustion engine industry.

    摘要翻译: 公开了一种通过向制备的室温可硫化的硅酮密封剂组合物中加入肟基硅化合物形成两个或更多个无孔基材之间的密封的方法,该组合物由烷氧基末端聚二有机硅氧烷,具有硅键合的甲氧基或乙氧基的交联剂, 填料,钛酸酯催化剂,以及在制造硅酮密封剂组合物期间获得的副产的甲醇或乙醇。 将密封剂组合物施加到至少两个无孔基材上,形成将它们粘合在一起的未固化密封剂组合物的组合,使组合件经受不存在肟基硅化合物时通常会形成有害气泡的条件,并将组合物完全固化形成 至少两个基本上没有有害气泡的固化密封剂粘合的无孔基材的组件。 这种方法在形成用于内燃机工业的垫圈中是有价值的。