21-07-2016 дата публикации
Номер: US20160207781A1
Organosilicon chemistry, polymer derived ceramic materials, and methods. Such materials and methods for making polysilocarb (SiOC) and Silicon Carbide (SiC) materials having 3-nines, 4-nines, 6-nines and greater purity. Processes and articles utilizing such high purity SiOC and SiC. 1. A high purity SiOC composition comprising: silicon , carbon and oxygen; and wherein the composition is substantially free from impurities , whereby the composition is at last 99.99% pure.2. The composition of claim 1 , having a molar ratio of about 30% to 85% carbon claim 1 , about 5% to 40% oxygen claim 1 , and about 5% to 35% silicon.3. The composition of claim 1 , having a molar ratio of about 50% to 65% carbon claim 1 , about 20% to 30% oxygen claim 1 , and about 15% to 20% silicon.4. The composition of claim 1 , wherein the composition is a solid5. The composition of claim 1 , wherein the composition is a ceramic.6. The compositions of claim 1 , claim 1 , claim 1 , and claim 1 , having impurities of less than about 1 claim 1 ,000 ppm total of the elements selected from the group consisting of Al claim 1 , Fe claim 1 , B claim 1 , P claim 1 , Ca claim 1 , Li claim 1 , Na claim 1 , Ni claim 1 , Ce claim 1 , Cr claim 1 , S and As.7. The compositions of claim 1 , claim 1 , claim 1 , and claim 1 , having impurities of less than about 500 ppm total of the elements selected from the group consisting of Al claim 1 , Fe claim 1 , P claim 1 , Pt claim 1 , Mg claim 1 , Li claim 1 , Na claim 1 , Ni claim 1 , V claim 1 , Cr claim 1 , N and As.8. The compositions of claim 1 , claim 1 , claim 1 , and claim 1 , having impurities of less than about 100 ppm total of the elements selected from the group consisting of Al claim 1 , Fe claim 1 , B claim 1 , P claim 1 , Pt claim 1 , Na claim 1 , Ni claim 1 , V claim 1 , Ce claim 1 , Cr claim 1 , and S.9. The composition of claim 1 , claim 1 , claim 1 , and claim 1 , having impurities of less than about 50 ppm total of the elements selected from the ...
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