Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
A polymetallosilazane having a number molecular weight of 200-500,000, obtained by reacting (i) a polysilazane having a number molecular weight of 100-50,000 and having a main skeletal structure containing the following recurring unit: wherein R¹, R² and R³ are the same or different and each is hydrogen, a hydrocarbyl group, a group other than a hydrocarbyl group and having a carbon atom bonded to the silicon atom of the above formula, an alkylsilyl group, an alkylamino group or an alkoxy group, with (ii) a metal alkoxide of the formula: M(OR⁴) n wherein M is a metal, each R₄ is the same or different and is hydrogen, an alkyl group having 1-20 carbon atoms or an aryl group, and n is the valence of the metal M with the proviso that at least one of the R₄ groups is an alkyl or aryl group.
Claim 2
Dependent Claim
143 words
A polymetallosilazane having a number molecular weight of 200-500,000, obtained by reacting (i) a polysilazane having a number molecular weight of 100-50,000 and having a main skeletal structure containing the following recurring unit: wherein R¹, R² and R³ are the same or different and each is hydrogen, a hydrocarbyl group, a group other than a hydrocarbyl group and having a carbon atom bonded to the silicon atom of the above formula, an alkylsilyl group, an alkylamino group or an alkoxy group, with (ii) a metal alkoxide of the formula: M(OR⁴) n wherein M is a metal, each R₄ is the same or different and is hydrogen, an alkyl group having 1-20 carbon atoms or an aryl group, and n is the valence of the metal M with the proviso that at least one of the R₄ groups is an alkyl or aryl group.
Claim 3
Dependent Claim
31 words
A polymetallosilazane as set forth in Claim 1, wherein said metal M is selected from metals of the groups IIa, IIIa, IIIb, IVa, IVb, Va and Vb of the Periodic Table.
Claim 4
Dependent Claim
44 words
A polymetallosilazane as set forth in Claim 2, wherein said metal M is selected from Be, Mg, Ca, Sr, Ba, Sc, Y, lanthanoid elements, actinoid elements, B, Al, Ga, In, Tl, Ti, Zr, Hf, Ge, Sn, Pb, V, Nb, Ta, As, Sb and Bi.
Claim 5
Dependent Claim
21 words
A polymetallosilazane as set forth in Claim 3, wherein said metal M is selected from Y, B, Al, Ti and Zr.
Claim 6
Dependent Claim
22 words
A polymetallosilazane as set forth in any preceding claim, wherein said hydrocarbyl group is an alkyl, alkenyl, aryl, cycloalkyl or aralkyl group.
Claim 7
Dependent Claim
29 words
A polymetallosilazane as set forth in any preceding claim, wherein R¹, R², R³ are independently selected from hydrogen and C₁-C₅ alkyl groups, and R⁴ is a C₁-C₁₀ alkyl group.
Claim 8
Dependent Claim
28 words
A polymetallosilazane as set forth in Claim 6, wherein R¹, R² and R³ are independently selected from hydrogen, methyl or ethyl, and R⁴ is a C₁-C₄ alkyl group.