C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
402/10, 261/41
C08L 83/10 (2006.01) C08G 77/60 (2006.01) C08L 83/16 (2006.01)
Patent
CA 1263797
ABSTRACT OF THE DISCLOSURE A method of forming preceramic polymers using an organosilicon polymers containing Si-H repeat units by reacting it with alkali metal silylamids is disclosed. Preferably, the alkali metal silylamide is a polymeric alkali metal silylamide of the formula [(R1SiHNH)a(R1SiN)b(R1SiHNM)c]m (where a + b + c = 1; R1 is a lower alkyl group having from 1 to about 6 carbon atoms, a substituted or unsubstituted alkenyl group having from 2 to about 6 carbon atoms, a substituted or unsubstituted lower aryl group having from 6 to about 10 carbon atoms, a tri(lower)alkyl- or di(lower)alkylsilyl group or a di(lower)alkylamino group; M is an alkali metal or one-half equivalent of an alkaline earth metal; and n and m are integers greater than 1). The Si-H containing organosilicon polymer is preferably selected from the group consisting of organopolysilanes of the formula [(RSiH)x(RSi)y]n (where R is a lower alkyl group having from 1 to about 6 carbon atoms, a lower alkenyl group having from 2 to about 6 carbon atoms, or a substituted or unsubstituted lower aryl group having from 6 to about 10 carbon atoms, and n is greater than 1), and polycarbosilanes having repeat units of the formula [RaSi(H)-(CH2)q] (where Ra is H, a lower alkyl group having from 1 to about 6 carbon atoms, a cycloalkyl group having from 3 to about 6 carbon atoms, or a substituted or unsubstituted lower aryl group having from 6 to about 10 carbon atoms, q is an integer 1 or greater). Novel preceramic polymers formed by this method are also disclosed.
514060
Seyferth Dietmer
Wood Timothy
Yu Yuan-Fu
Massachusetts Institute Of Technology
Seyferth Dietmer
Swabey Ogilvy Renault
Wood Timothy
Yu Yuan-Fu
LandOfFree
Method for forming new preceramic polymers for sic and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for forming new preceramic polymers for sic and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for forming new preceramic polymers for sic and... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1282706