[특허]Silicon nitride-containing ceramic material prepared by pyrolysis of hydrosilazane polymers from (R.sub.3 Si).sub.2 NH and HSiCl.sub.3

Silicon nitride-containing ceramic material prepared by pyrolysis of hydrosilazane polymers from (R.sub.3 Si).sub.2 NH and HSiCl.sub.3 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C04B-035/58
출원번호	US-0689258 (1985-01-07)
발명자 / 주소	Cannady, John P.
출원인 / 주소	Dow Corning Corporation
대리인 / 주소	Kaba, Richard A.
인용정보	피인용 횟수 : 29 인용 특허 : 3

초록 ▼

A process is disclosed for preparing R 3 SiNH-containing hydrosilazane polymer by contacting and reacting trichlorosilane with a disilazane (R 3 Si) 2 NH where R is vinyl, hydrogen, phenyl, or alkyl radicals containing 1 to 3 carbon atoms. These hydrosilazane polymers are useful, when fired at high

대표청구항 ▼

1. A method of preparing a silicon nitride-containing ceramic material which method consists of heating a R 3 SiNH-containing hydrosilazane polymer in an inert atmosphere or in a vacuum to a temperature of at least 750° C. until said R 3 SiNH-containing hydrosilazane polymer is converted to a silicon nitride-containing ceramic material, said R 3 SiNH-containing hydrosilazane polymer having been obtained by a process which consisted of contacting and reacting, in an inert, essentially anhydrous atmosphere, trichlorosilane with a disilazane at a temperature in the range of 25° to 300° C. while distilling by-produced volatile products, wherein said disilazane had the general formula ##EQU##(R 3 Si) 2 NH where R is selected from the group consisting of vinyl, hydrogen, phenyl, and alkyl radicals containing 1 to 3 carbon atoms. 2. A method as defined in claim 1 wherein said trichlorosilane was purified prior to contacting and reacting with said disilazane at a temperature in the range of 125° to 175° C. 3. A method as defined in claim 1 wherein said trichlorosilane and said disilazane were contacted in such a manner that the initial reaction temperature resulting from the initial exotherm was less than 50° C. 4. A method as defined in claim 2 wherein said trichlorosilane and said disilazane were contacted in such a manner that the initial reaction temperature resulting from the initial exotherm was less than 50° C. 5. A method as defined in claim 3 wherein the initial reaction temperature resulting from the initial exotherm was less than 35° C. 6. A method as defined in claim 4 wherein the initial reaction temperature resulting from the initial exotherm was less than 35° C. 7. A method as defined in claim 1 wherein (R 3 Si) 2 NH was [(CH 3 ) 3 Si] 2 NH. 8. A method as defined in claim 1 wherein (R 3 Si) 2 NH was [(CH 3 ) 2 CH 2 =CHSi] 2 NH. 9. A method as defined in claim 1 wherein (R 3 Si) 2 NH was [CH 3 (C 6 H 5 ) 2 Si] 2 NH. 10. A method as defined in claim 1 wherein (R 3 Si) 2 NH was [C 6 H 5 (CH 3 ) 2 Si] 2 NH. 11. A method as defined in claim 1 wherein (R 3 Si) 2 NH was [H(CH 3 ) 2 Si] 2 NH. 12. A method as defined in claim 2 wherein (R 3 Si) 2 NH was [(CH 3 ) 3 Si] 2 NH. 13. A method as defined in claim 2 wherein (R 3 Si) 2 NH was [(CH 3 ) 2 CH 2 =CHSi] 2 NH. 14. A method as defined in claim 2 wherein (R 3 Si) 2 NH was [CH 3 (C 6 H 5 ) 2 Si] 2 NH. 15. A method as defined in claim 2 wherein (R 3 Si) 2 NH was [C 6 H 5 (CH 3 ) 2 Si] 2 NH. 16. A method as defined in claim 2 wherein (R 3 Si) 2 NH was [H(CH 3 ) 2 Si] 2 NH. 17. A method as defined in claim 4 wherein (R 3 Si) 2 NH was [(CH 3 ) 3 Si] 2 NH. 18. A method as defined in claim 4 wherein (R 3 Si) 2 NH was [(CH 3 ) 2 CH 2 =CHSi] 2 NH. 19. A method as defined in claim 4 wherein (R 3 Si) 2 NH was [CH 3 (C 6 H 5 ) 2 Si] 2 NH. 20. A method as defined in claim 4 wherein (R 3 Si) 2 NH was [C 6 H 5 (CH 3 ) 2 Si] 2 NH. 21. A method as defined in claim 4 wherein (R 3 Si) 2 NH was [H(CH 3 ) 2 Si] 2 NH. 22. A silicon nitride-containing ceramic material as prepared by the method of claim 1. 23. A silicon nitride-containing ceramic material as prepared by the method of claim 2. 24. A silicon nitride-containing ceramic material as prepared by the method of claim 4.

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Gaul ; Jr. John H. (Midland MI), Process for the preparation of poly(disilyl)silazane polymers and the polymers therefrom.
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Crosbie Gary M. (Dearborn MI), Method of making a special purity silicon nitride powder.
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Haluska Loren A. (Midland MI), Method of preparing ceramics from polymers derived from cyclic silazanes, and halosilanes.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Silicon nitride-containing ceramic material prepared by pyrolysis of hydrosilazane polymers from (R.sub.3 Si).sub.2 NH and HSiCl.sub.3 원문보기

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연합인증

Silicon nitride-containing ceramic material prepared by pyrolysis of hydrosilazane polymers from (R.sub.3 Si).sub.2 NH and HSiCl.sub.3 원문보기

초록 ▼

대표청구항 ▼

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이 특허에 인용된 특허 (3)

이 특허를 인용한 특허 (29)

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