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특허 상세정보

Process for making an enhanced thermal and ignition stability azide gas generant

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C06B-021/00   
미국특허분류(USC) 264/34 ; 149/35 ; 149/1096
출원번호 US-0563772 (1990-08-06)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 21  인용 특허 : 14
초록

Multiple processes and apparatuses for improving the prior system of making gas generant pellets or tablets made of sodium azide, molybdenum disulfide and sulfur wherein powdered ingredients thereof are slurried in water, subjected to wet grinding, spray dried to a powdered material which is molded into pellets or tablets which find use in vehicle crash bags or inflators. The first improvement to the old process and apparatus involves adjusting the basicity of the water to a pH of greater than 8.0 up to about 12.5 via the addition of sodium hydroxide, fo...

대표
청구항

In a process of making gas generant pellets or tablets wherein powdered ingredients of a generant azide and an oxidizer and/or reactant therefor are slurried in water, subjected to wet grinding, dried to a powder material which is then further processed to produce the pellets or tablets, the improvement wherein the order of addition of the ingredients in the slurry stage comprises first adding a base to the water to adjust the pH to be within the range of greater than 8.0 up to about 12.5, then adding said oxidant/reactant and finally the azide whereby t...

이 특허에 인용된 특허 (14)

  1. Schneiter Fred E. (North Ogden UT) Taylor Robert D. (Hyrum UT). Azide gas generant formulations. USP1989064836255.
  2. Goetz George W. (Detroit MI). Azide gas generating composition. USP1977124062708.
  3. Palgrave Derek A. (Doncaster GB2) Waite Frederick A. (Farnham Common GB2) Birchall James D. (Chester GB2) Cooper John (Kilmarnock GB6) Enever James A. (Kilmarnock GB6 4). Comminution process. USP1981054265406.
  4. Cartwright Richard V. (Sussex County NJ) Hardwick Steven J. (New Castle County DE). Crash bag propellant compositions for generating high quality nitrogen gas. USP1988034734141.
  5. Schneiter, Fred E.; McDonald, Allan J.. Gas generant for air bag inflators. USP1985104547235.
  6. Flanagan ; Joseph E.. Hot nitrogen generator containing calcium oxide. USP1978054092190.
  7. Saeva Franklin D. (Webster NY) Schank Richard L. (Webster NY). Liquid crystal compositions. USP1976013931041.
  8. DiValentin Mario Angelo (Otterburn Park CA). Metal oxide/azide gas generating compositions. USP1976123996079.
  9. Knowlton Gregory D. (Chandler AZ) Pietz John F. (Mesa AZ). Method and compositions for generating nitrogen gas. USP1986084604151.
  10. Utracki Lechoslaw A. M. (Pierrefonds CAX). Multi-ingredient gas generators. USP1983034376002.
  11. Poole Donald R. (Woodinville WA). Pelletizable propellant. USP1985084533416.
  12. Kirchoff George F. (Brigham City UT) Schneiter Fred E. (Brigham City UT). Pelletizable, rapid and cool burning solid nitrogen gas generant. USP1980054203787.
  13. Pietz John F. (Mesa AZ). Porous propellant grain and method of making same. USP1988074758287.
  14. Shaw Graham C. (Garland UT). Solid non-azide nitrogen gas generant compositions. USP1983014369079.

이 특허를 인용한 특허 피인용횟수: 21

  1. Marchant Brent R. ; Hussey Brett. Airbag generant wafer design with I-beam construction. USP2000046053110.
  2. Matsuoka Kazuyuki,JPX ; Tomiyama Shogo,JPX. Gas generant composition. USP2001106302979.
  3. Mendenhall, Ivan V.; Lund, Gary K.. Gas generating compositions having glass fibers. USP2014088808476.
  4. Cox, Matthew A.; Smith, Bradley W.; Russell, K. Doyle; Jones, Michael. Generant grain assembly formed of multiple symmetric pieces. USP2015069051223.
  5. Lund, Gary K.; Bradford, Roger. High performance gas generating compositions. USP2014088815029.
  6. Hinshaw Jerald C. (Farr West UT) Doll Daniel W. (North Ogden UT) Blau Reed J. (Richmond UT) Lund Gary K. (Ogden UT). Metal complexes for use as gas generants. USP1997105673935.
  7. Hinshaw Jerald C. (Farr West UT) Doll Daniel W. (North Ogden UT) Blau Reed J. (Richmond UT) Lund Gary K. (Ogden UT). Metal complexes for use as gas generants. USP1997015592812.
  8. Hinshaw Jerald C. ; Doll Daniel W. ; Blau Reed J. ; Lund Gary K.. Metal complexes for use as gas generants. USP1998035725699.
  9. Hinshaw, Jerald C.; Doll, Daniel W.; Blau, Reed J.; Lund, Gary K.. Metal complexes for use as gas generants. USP2005116969435.
  10. Hinshaw, Jerald C.; Doll, Daniel W.; Blau, Reed J.; Lund, Gary K.. Metal complexes for use as gas generants. USP2015129199886.
  11. Jerald C. Hinshaw ; Daniel W. Doll ; Reed J. Blau ; Gary K. Lund. Metal hydrazine complexes for use as gas generants. USP2002116481746.
  12. Blau Reed J. (Richmond UT) Lund Gary K. (Ogden UT). Method for preparing anhydrous tetrazole gas generant compositions. USP1995125472647.
  13. Bradford, Roger; Cronin, Thomas; Mendenhall, Ivan; Hussey, Brett. Methods of manufacturing monolithic generant grains. USP2015119193639.
  14. Flanigan David A. ; Mancini Vincent E. ; Harper Michael R.. Methods of preparing gas generant formulations. USP1998035731540.
  15. Hussey, Brett; Mendenhall, Ivan V.; Bradford, Roger. Monolithic gas generant grains. USP2011118057610.
  16. Hussey, Brett; Mendenhall, Ivan; Bradford, Roger. Monolithic gas generant grains. USP2010077758709.
  17. Brisighella, Dario; Hussey, Brett. Multi-composition pyrotechnic grain. USP2011118057611.
  18. Ochi Koji (Aichi-Ken JPX) Narita Kazuyuki (Aichi-Ken JPX) Matsuda Kazunori (Aichi-Ken JPX) Asano Nobukazu (Handa JPX). Process for manufacturing a gas generator composition. USP1996105563367.
  19. Hamilton Brian K. (Littleton CO) Haynes Kenneth E. (Parker CO) Kirk Doug R. (Parker CO) Blomberg William J. (Parker CO). Slurry-loadable electrical initiator. USP1997115686691.
  20. Barnes, Michael W.; Smith, Gary L.. Tablet form of gas generant. USP2003016502513.
  21. Hinshaw Jerald C. ; Doll Daniel W. ; Blau Reed J. ; Lund Gary K.. Using metal complex compositions as gas generants. USP1998045735118.