| 摘要 |
<p>A silicone composition comprising a polymer having siloxane units and two or more silicon bonded hydroxyl or hydrolysable groups per molecule; a crosslinker; an extender material which is either an alkyl substituted aryl compound such as a heavy alkylate, or an alkylcycloaliphatic compound; and a u.v. light stabiliser comprising a benzotriazole moiety. These compositions are useful, for example as room temperature vulcanisable sealants. They retain colour clarity or transparency, even on ageing.</p> |
