CHROMIUM-BASED CATALYST COMPOSITION FOR PRODUCING CONJUGATED DIENE POLYMERS
申请人:Bridgestone Corp.
公开号:US20020115558A1
公开(公告)日:2002-08-22
A catalyst composition that is the combination of or the reaction product of ingredients comprising (a) a chromium-containing compound; (b) an organomagnesium compound; and (c) a silyl phosphonate. also, a process for forming conjugated diene polymers by using the catalyst composition.
Flame retardant epoxy prepregs, laminates, and printed wiring boards of enhanced thermal stability
申请人:Ranken F. Paul
公开号:US20050075024A1
公开(公告)日:2005-04-07
Boehmite (alumina monohydrate) when used with a typical epoxy resin advanced with phosphorus makes it possible to improve thermal stability and to increase the ignition time of laminates formed from prepregs made using this fortified resin. Such laminates have exceptionally high thermal stability and showed similar longer times to ignition as compared to corresponding resins in which alumina trihydrate was used.