Ceramic materials from silazane polymers

Claim 1

A method of preparing a ceramic material with increased ceramic yield, said method comprising heating a modified R 3 SiNH-containing silazane polymer in an inert atmosphere or in a vacuum to a temperature of at least 750° C. until said modified R 3 SiNH-containing silazane polymer is converted to a ceramic material with increased ceramic yield relative to a non-modified R 3 SiNH-containing silazane polymer heated under the same conditions, wherein said modified R 3 SiNH-containing silazane polymer is prepared by mixing the non-modified R 3 SiNH-containing silazane polymer with an effective, ceramic yield increasing, amount of a metal or metal compound selected from the group consisting of (i) a. finely divided ruthenium metal, b. ruthenium (III) bromide, c. ruthenium (III) 2,4-pentanedionate, d. ruthenium (III) chloride, e. ruthenium (III) iodide, f. dichlorotricarbonylruthenium (II) dimer and g. dodecacarbonyltriruthenium; (ii) a. finely divided palladium metal, b. palladium (II) bromide, c. palladium (II) 2,4-pentanedionate, d. palladium (II) chloride, e. palladium (II) iodide, f. palladium (II) nitrate and g. trimer of palladium (II) acetate; (iii) a. finely divided silver metal, b. silver bromide, c. silver acetate, d. silver 2,4-pentanedionate, e. silver cyclohexanebutyrate, f. silver chloride, g. silver (I) fluoride, h. silver (II) fluoride, i. silver iodate, j. silver nitrate, k. silver carbonate and l. silver phosphate; (iv) a. indium bromide, b. indium acetate, c. indium 2,4-pentanedionate, d. indium chloride, e. indium fluoride, f. indium nitrate and g. indium isopropoxide; (v) a. finely divided iridium metal, b. iridium (III) 2,4-pentanedionate c. bis-(triphenylphosphine)iridium bromide, d. bis-(triphenylphosphine)iridium chloride, e. bis-(triphenylphosphine)iridium iodide, f. iridium (III) chloride, g. iridium (IV) chloride and h. carbonylhydrido-tri-(triphenylphosphine)iridium; (vi) a. finely divided platinum metal, ;p1 b. platinum (II) bromide, c. platinum (IV) bromide, d. dihydrogen hexachloroplatinate (IV), e. diido(cycloocta-1,5-diene)platinum (II), f. platinum (II) 2,4-pentanedionate, g. bis-(triphenylphosphine)platinum (II) chloride, h. platinum (II) chloride and i. platinum (IV) chloride.

Claim 2

A method of preparing a ceramic material with increased ceramic yield, said method comprising heating a modified R 3 SiNH-containing silazane polymer in an inert atmosphere or in a vacuum to a temperature of at least 750° C. until said modified R 3 SiNH-containing silazane polymer is converted to a ceramic material with increased ceramic yield relative to a non-modified R 3 SiNH-containing silazane polymer heated under the same conditions, wherein said modified R 3 SiNH-containing silazane polymer is prepared by mixing the non-modified R 3 SiNH-containing silazane polymer with an effective, ceramic yield increasing, amount of a metal or metal compound selected from the group consisting of (i) a. finely divided ruthenium metal, b. ruthenium (III) bromide, c. ruthenium (III) 2,4-pentanedionate, d. ruthenium (III) chloride, e. ruthenium (III) iodide, f. dichlorotricarbonylruthenium (II) dimer and g. dodecacarbonyltriruthenium; (ii) a. finely divided palladium metal, b. palladium (II) bromide, c. palladium (II) 2,4-pentanedionate, d. palladium (II) chloride, e. palladium (II) iodide, f. palladium (II) nitrate and g. trimer of palladium (II) acetate; (iii) a. finely divided silver metal, b. silver bromide, c. silver acetate, d. silver 2,4-pentanedionate, e. silver cyclohexanebutyrate, f. silver chloride, g. silver (I) fluoride, h. silver (II) fluoride, i. silver iodate, j. silver nitrate, k. silver carbonate and l. silver phosphate; (iv) a. indium bromide, b. indium acetate, c. indium 2,4-pentanedionate, d. indium chloride, e. indium fluoride, f. indium nitrate and g. indium isopropoxide; (v) a. finely divided iridium metal, b. iridium (III) 2,4-pentanedionate c. bis-(triphenylphosphine)iridium bromide, d. bis-(triphenylphosphine)iridium chloride, e. bis-(triphenylphosphine)iridium iodide, f. iridium (III) chloride, g. iridium (IV) chloride and h. carbonylhydrido-tri-(triphenylphosphine)iridium; (vi) a. finely divided platinum metal, ;p1 b. platinum (II) bromide, c. platinum (IV) bromide, d. dihydrogen hexachloroplatinate (IV), e. diido(cycloocta-1,5-diene)platinum (II), f. platinum (II) 2,4-pentanedionate, g. bis-(triphenylphosphine)platinum (II) chloride, h. platinum (II) chloride and i. platinum (IV) chloride.

Claim 3

A method of preparing a ceramic material with increased ceramic yield, said method comprising heating a modified R 3 SiNH-containing silazane polymer in an inert atmosphere or in a vacuum to a temperature of at least 750° C. until said modified R 3 SiNH-containing silazane polymer is converted to a ceramic material with increased ceramic yield relative to a non-modified R 3 SiNH-containing silazane polymer heated under the same conditions, wherein said modified R 3 SiNH-containing silazane polymer is prepared by mixing the non-modified R 3 SiNH-containing silazane polymer with an effective, ceramic yield increasing, amount of a metal or metal compound, wherein said non-modified R 3 SiNH-containing silazane polymer is prepared by contacting and reacting in an inert, essentially anhydrous atmosphere, a chlorine-containing disilane or a mixture of chlorine-containing disilanes of general formula (Cl.sub.b R.sub.c 'Si).sub.2 with a disilazane of general formula (R.sub.3 Si).sub.2 NH at a temperature in the range of 25° C. to 300° C. while distilling by-produced volatile products, wherein R' is a vinyl group, an alkyl group of 1-3 carbon atoms, or a phenyl group; R is a hydrogen atom, a vinyl group, an alkyl group of 1-3 carbon atoms, or a phenyl group; b has a value of 0.5-3; c has a value of 0-2.5; and the sum of (b+c) is equal to three and, wherein the metal or metal compound is selected from the group consisting of (i) a. finely divided ruthenium metal, b. ruthenium (III) bromide, c. ruthenium (III) 2,4-pentanedionate, d. ruthenium (III) chloride, e. ruthenium (III) iodide, f. dichlorotricarbonylruthenium (II) dimer and g. dodecacarbonyltriruthenium; (ii) a. finely divided palladium metal, b. palladium (II) bromide, c. palladium (II) 2,4-pentanedionate, d. palladium (II) chloride, e. palladium (II) iodide, f. palladium (II) nitrate and g. trimer of palladium (II) acetate; (iii) a. finely divided silver metal, b. silver bromide, c. silver acetate, d. silver 2,4-pentanedinoate, e. silver cyclohexanebutyrate, f. silver chloride, g. silver(I)fluoride, h. silver(II)fluoride, i. silver iodate, j. silver nitrate, k. silver carbonate and l. silver phosphate; (iv) a. indium bromide, b. indium acetate, c. indium 2,4-pentanedionate, d. indium chloride, e. indium fluoride, f. indium nitrate and g. indium isopropoxide; (v) a. finely divided iridium metal, b. iridium(III)2,4-pentanedionate c. bis-(triphenylphosphine)iridium bromide, d. bis-(triphenylphosphine)iridium chloride, e. bis-(triphenylphosphine)iridium iodide, f. iridium(III)chloride, g. iridium(IV)chloride and h. carbonylhydrido-tri-(triphenylphosphine)iridium; (vi) a. finely divided platinum metal, b. platinum(II)bromide, c. platinum(IV)bromide, d. dihydrogen hexachloroplatinate(IV), e. diido(cycloocta-1,5-diene)platinum(II), f. platinum(II)2,4-pentanedionate, g. bis-(triphenylphosphine)platinum(II)chloride, h. platinum(II)chloride and i. platinum(IV)chloride.

Claim 4

A method of preparing a ceramic material with increased ceramic yield, said method comprising heating a modified R 3 SiNH-containing silazane polymer in an inert atmosphere or in a vacuum to a temperature of at least 750° C. until said modified R 3 SiNH-containing silazane polymer is converted to a ceramic material with increased ceramic yield relative to a non-modified R 3 SiNH-containing silazane polymer heated under the same conditions, wherein said modified R 3 SiNH-containing silazane polymer is prepared by mixing the non-modified R 3 SiNH-containing silazane polymer with an effective, ceramic yield increasing, amount of a metal or metal compound, wherein said non-modified R 3 SiNH-containing silazane polymer is prepared by contacting and reacting in an inert, essentially anhydrous atmosphere, a chlorine-containing disilane or a mixture of chlorine-containing disilanes of general formula (Cl.sub.b R.sub.c 'Si).sub.2 with a disilazane of general formula (R.sub.3 Si).sub.2 NH at a temperature in the range of 25° C. to 300° C. while distilling by-produced volatile products, wherein R' is a vinyl group, an alkyl group of 1-3 carbon atoms, or a phenyl group; R is a hydrogen atom, a vinyl group, an alkyl group of 1-3 carbon atoms, or a phenyl group; b has a value of 0.5-3; c has a value of 0-2.5; and the sum of (b+c) is equal to three and, wherein the metal or metal compound is selected from the group consisting of (i) a. finely divided ruthenium metal, b. ruthenium (III) bromide, c. ruthenium (III) 2,4-pentanedionate, d. ruthenium (III) chloride, e. ruthenium (III) iodide, f. dichlorotricarbonylruthenium (II) dimer and g. dodecacarbonyltriruthenium; (ii) a. finely divided palladium metal, b. palladium (II) bromide, c. palladium (II) 2,4-pentanedionate, d. palladium (II) chloride, e. palladium (II) iodide, f. palladium (II) nitrate and g. trimer of palladium (II) acetate; (iii) a. finely divided silver metal, b. silver bromide, c. silver acetate, d. silver 2,4-pentanedinoate, e. silver cyclohexanebutyrate, f. silver chloride, g. silver(I)fluoride, h. silver(II)fluoride, i. silver iodate, j. silver nitrate, k. silver carbonate and l. silver phosphate; (iv) a. indium bromide, b. indium acetate, c. indium 2,4-pentanedionate, d. indium chloride, e. indium fluoride, f. indium nitrate and g. indium isopropoxide; (v) a. finely divided iridium metal, b. iridium(III)2,4-pentanedionate c. bis-(triphenylphosphine)iridium bromide, d. bis-(triphenylphosphine)iridium chloride, e. bis-(triphenylphosphine)iridium iodide, f. iridium(III)chloride, g. iridium(IV)chloride and h. carbonylhydrido-tri-(triphenylphosphine)iridium; (vi) a. finely divided platinum metal, b. platinum(II)bromide, c. platinum(IV)bromide, d. dihydrogen hexachloroplatinate(IV), e. diido(cycloocta-1,5-diene)platinum(II), f. platinum(II)2,4-pentanedionate, g. bis-(triphenylphosphine)platinum(II)chloride, h. platinum(II)chloride and i. platinum(IV)chloride.

Claim 5

A method of preparing a ceramic material with increased ceramic yield, said method comprising heating a modified R 3 SiNH-containing silazane polymer in an inert atmosphere or in a vacuum to a temperature of at least 750° C. until said modified R 3 SiNH-containing silazane polymer is converted to a ceramic material with increased ceramic yield relative to a non-modified R 3 SiNH-containing silazane polymer heated under the same conditions, wherein said modified R 3 SiNH-containing silazane polymer is prepared by mixing the non-modified R 3 SiNH-containing silazane polymer with an effective, ceramic yield increasing, amount of a metal or metal compound, wherein said non-modified R 3 SiNH-containing silazane polymer is prepared by contacting and reacting in an inert, essentially anhydrous atmosphere, an organochlorosilane or a mixture of organochlorosilanes of general formula R.sub.n 'SiCl.sub.(4-n) with disilazane of general formula (R.sub.3 Si).sub.2 NH at a temperature in the range of 25° C. to 300° C. while distilling by-produced volatile products, wherein R'is a vinyl group, an alkyl group of 1-3 carbon atoms, or a phenyl group; R is a hydrogen atom, a vinyl group, an alkyl group of 1-3 carbon atoms, or a phenyl group; and n has a value of 1 or 2 and, wherein the metal or metal compound is selected from the group consisting of (i) a. finely divided ruthenium metal, b. ruthenium(III)bromide, c. ruthenium(III)2,4-pentanedionate, d. ruthenium(III)chloride, e. ruthenium(III)iodide, f. dichlorotricarbonylruthenium(II)dimer and g. dodecacarbonyltriruthenium; (ii) a. finely divided palladium metal, b. palladium(II)bromide, c. palladium(II)2,4-pentanedionate, d. palladium(II)chloride, e. palladium(II)iodide, f. palladium(II)nitrate and g. trimer of palladium(II)acetate; (iii) a. finely divided silver metal, b. silver bromide, c. silver acetate, d. silver 2,4-pentanedinoate, e. silver cyclohexanebutyrate, f. silver chloride, g. silver(I)fluoride, h. silver(II)fluoride, i. silver iodate, j. silver nitrate, k. silver carbonate and l. silver phosphate, (iv) a. indium bromide, b. indium acetate, c. indium 2,4-pentanedionate, d. indium chloride, e. indium fluoride, f. indium nitrate and g. indium isopropoxide; (v) a. finely divided iridium metal, b. iridium(III)2,4-pentanedionate c. bis-(triphenylphosphine)iridium bromide, d. bis-(triphenylphosine)iridium chloride, e. bis-(triphenylphosphine)iridium iodide, f. iridium(III)chloride, g. iridium(IV)chloride and h. carbonylhydrido-tri-(triphenylphosphine)iridium; (vi) a. finely divided platinum metal, b. platinum(II)bromide, c. platinum(IV)bromide, d. dihydrogen hexachloroplatinate(IV), e. diido(cycloocta-1,5-diene)platinum(II), f. platinum(II)2,4-pentanedionate, g. bis-(triphenylphosphine)platinum(II)chloride, h. platinum(II)chloride and i. platinum(IV)chloride.

Claim 6

A method of preparing a ceramic material with increased ceramic yield, said method comprising heating a modified R 3 SiNH-containing silazane polymer in an inert atmosphere or in a vacuum to a temperature of at least 750° C. until said modified R 3 SiNH-containing silazane polymer is converted to a ceramic material with increased ceramic yield relative to a non-modified R 3 SiNH-containing silazane polymer heated under the same conditions, wherein said modified R 3 SiNH-containing silazane polymer is prepared by mixing the non-modified R 3 SiNH-containing silazane polymer with an effective, ceramic yield increasing, amount of a metal or metal compound, wherein said non-modified R 3 SiNH-containing silazane polymer is prepared by contacting and reacting in an inert, essentially anhydrous atmosphere, an organochlorosilane or a mixture of organochlorosilanes of general formula R.sub.n 'SiCl.sub.(4-n) with disilazane of general formula (R.sub.3 Si).sub.2 NH at a temperature in the range of 25° C. to 300° C. while distilling by-produced volatile products, wherein R'is a vinyl group, an alkyl group of 1-3 carbon atoms, or a phenyl group; R is a hydrogen atom, a vinyl group, an alkyl group of 1-3 carbon atoms, or a phenyl group; and n has a value of 1 or 2 and, wherein the metal or metal compound is selected from the group consisting of (i) a. finely divided ruthenium metal, b. ruthenium(III)bromide, c. ruthenium(III)2,4-pentanedionate, d. ruthenium(III)chloride, e. ruthenium(III)iodide, f. dichlorotricarbonylruthenium(II)dimer and g. dodecacarbonyltriruthenium; (ii) a. finely divided palladium metal, b. palladium(II)bromide, c. palladium(II)2,4-pentanedionate, d. palladium(II)chloride, e. palladium(II)iodide, f. palladium(II)nitrate and g. trimer of palladium(II)acetate; (iii) a. finely divided silver metal, b. silver bromide, c. silver acetate, d. silver 2,4-pentanedinoate, e. silver cyclohexanebutyrate, f. silver chloride, g. silver(I)fluoride, h. silver(II)fluoride, i. silver iodate, j. silver nitrate, k. silver carbonate and l. silver phosphate, (iv) a. indium bromide, b. indium acetate, c. indium 2,4-pentanedionate, d. indium chloride, e. indium fluoride, f. indium nitrate and g. indium isopropoxide; (v) a. finely divided iridium metal, b. iridium(III)2,4-pentanedionate c. bis-(triphenylphosphine)iridium bromide, d. bis-(triphenylphosine)iridium chloride, e. bis-(triphenylphosphine)iridium iodide, f. iridium(III)chloride, g. iridium(IV)chloride and h. carbonylhydrido-tri-(triphenylphosphine)iridium; (vi) a. finely divided platinum metal, b. platinum(II)bromide, c. platinum(IV)bromide, d. dihydrogen hexachloroplatinate(IV), e. diido(cycloocta-1,5-diene)platinum(II), f. platinum(II)2,4-pentanedionate, g. bis-(triphenylphosphine)platinum(II)chloride, h. platinum(II)chloride and i. platinum(IV)chloride.

Claim 7

A method of preparing a ceramic material with increased ceramic yield, said method comprising heating a modified R 3 SiNH-containing silazane polymer in an inert atmosphere or in a vacuum to a temperature of at least 750° C. until said modified R 3 SiNH-containing silazane polymer is converted to a ceramic material with increased ceramic yield relative to a non-modified R 3 SiNH-containing silazane polymer heated under the same conditions, wherein said modified R 3 SiNH-containing silazane polymer is prepared by mixing the non-modified R 3 SiNH-containing silazane polymer with an effective, ceramic yield increasing, amount of a metal or metal compound, wherein said non-modified R 3 SiNH-containing silazane polymer is prepared by contacting and reacting in an inert, essentially anhydrous atmosphere, trichlorosilane with a disilazane at a temperature in the range of 25° C. to 300° C. while distilling by-produced volatile products, wherein said disilazane has the general formula (R.sub.3 Si).sub.2 NH where R is a hydrogen atom, a vinyl group, an alkyl group containing 1-3 carbon atoms, or a phenyl group and, wherein the metal or metal compound is selected form the group consisting of (i) a. finely divided ruthenium metal, b. ruthenium(III)bromide, c. ruthenium(III)2,4-pentanedionate, d. ruthenium(III)chloride, e. ruthenium(III)iodide, f. dichlorotricarbonylruthenium(II)dimer and g. dodecacarbonyltriruthenium; (ii) a. finely divided palladium metal, b. palladium(II)bromide, c. palladium(II)2,4-pentanedionate, d. palladium(II)chloride, e. palladium(II)iodide, f. palladium(II)nitrate and g. trimer of palladium(II)acetate; (iii) a. finely divided silver metal, b. silver bromide, c. silver acetate, d. silver 2,4-pentanedinoate, e. silver cyclohexanebutyrate, f. silver chloride, g. silver(I)fluoride, h. silver(II)fluoride, i. silver iodate, j. silver nitrate, k. silver carbonate and l. silver phosphate; (iv) a. indium bromide, b. indium acetate, c. indium 2,4-pentanedionate, d. indium chloride, e. indium fluoride, f. indium nitrate and g. indium isopropoxide; (v) a. finely divided iridium metal, b. iridium(III)2,4-pentanedionate c. bis-(triphenylphosphine)iridium bromide, d. bis-(triphenylphosphine)iridium chloride, e. bis-(triphenylphosphine)iridium iodide, f. iridium(III)chloride, g. iridium(IV)chloride and h. carbonylhydrido-tri-(triphenylphosphine)iridium; (vi) a. finely divided platinum metal, b. platinum(II)bromide, c. platinum(IV)bromide, d. dihydrogen hexachloroplatinate(IV), e. diido(cycloocta-1,5-diene)platinum(II), f. platinum(II)2,4-pentanedionate, g. bis-(triphenylphosphine)platinum(II)chloride, h. platinum(II)chloride and i. platinum(IV)chloride.

Claim 8

A method of preparing a ceramic material with increased ceramic yield, said method comprising heating a modified R 3 SiNH-containing silazane polymer in an inert atmosphere or in a vacuum to a temperature of at least 750° C. until said modified R 3 SiNH-containing silazane polymer is converted to a ceramic material with increased ceramic yield relative to a non-modified R 3 SiNH-containing silazane polymer heated under the same conditions, wherein said modified R 3 SiNH-containing silazane polymer is prepared by mixing the non-modified R 3 SiNH-containing silazane polymer with an effective, ceramic yield increasing, amount of a metal or metal compound, wherein said non-modified R 3 SiNH-containing silazane polymer is prepared by contacting and reacting in an inert, essentially anhydrous atmosphere, trichlorosilane with a disilazane at a temperature in the range of 25° C. to 300° C. while distilling by-produced volatile products, wherein said disilazane has the general formula (R.sub.3 Si).sub.2 NH where R is a hydrogen atom, a vinyl group, an alkyl group containing 1-3 carbon atoms, or a phenyl group and, wherein the metal or metal compound is selected form the group consisting of (i) a. finely divided ruthenium metal, b. ruthenium(III)bromide, c. ruthenium(III)2,4-pentanedionate, d. ruthenium(III)chloride, e. ruthenium(III)iodide, f. dichlorotricarbonylruthenium(II)dimer and g. dodecacarbonyltriruthenium; (ii) a. finely divided palladium metal, b. palladium(II)bromide, c. palladium(II)2,4-pentanedionate, d. palladium(II)chloride, e. palladium(II)iodide, f. palladium(II)nitrate and g. trimer of palladium(II)acetate; (iii) a. finely divided silver metal, b. silver bromide, c. silver acetate, d. silver 2,4-pentanedinoate, e. silver cyclohexanebutyrate, f. silver chloride, g. silver(I)fluoride, h. silver(II)fluoride, i. silver iodate, j. silver nitrate, k. silver carbonate and l. silver phosphate; (iv) a. indium bromide, b. indium acetate, c. indium 2,4-pentanedionate, d. indium chloride, e. indium fluoride, f. indium nitrate and g. indium isopropoxide; (v) a. finely divided iridium metal, b. iridium(III)2,4-pentanedionate c. bis-(triphenylphosphine)iridium bromide, d. bis-(triphenylphosphine)iridium chloride, e. bis-(triphenylphosphine)iridium iodide, f. iridium(III)chloride, g. iridium(IV)chloride and h. carbonylhydrido-tri-(triphenylphosphine)iridium; (vi) a. finely divided platinum metal, b. platinum(II)bromide, c. platinum(IV)bromide, d. dihydrogen hexachloroplatinate(IV), e. diido(cycloocta-1,5-diene)platinum(II), f. platinum(II)2,4-pentanedionate, g. bis-(triphenylphosphine)platinum(II)chloride, h. platinum(II)chloride and i. platinum(IV)chloride.