Organic, open cell foam materials, their carbonized derivatives, and methods for producing same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08J-009/28
C08J-009/00
B01J-020/02
B01J-021/18
B01J-021/00
출원번호
UP-0281696
(2005-11-16)
등록번호
US-7521485
(2009-07-01)
발명자
/ 주소
Albert, Donald F
Andrews, Greg R
Bruno, Joseph W
출원인 / 주소
American Aerogel Corporaition
대리인 / 주소
Ropes & Gray LLP
인용정보
피인용 횟수 :
2인용 특허 :
47
초록▼
Organic, small pore area materials ("SPMs") are provided comprising open cell foams in unlimited sizes and shapes. These SPMs exhibit minimal shrinkage and cracking. Processes for preparing SPMs are also provided that do not require supercritical extraction. These processes comprise sol-gel polymeri
Organic, small pore area materials ("SPMs") are provided comprising open cell foams in unlimited sizes and shapes. These SPMs exhibit minimal shrinkage and cracking. Processes for preparing SPMs are also provided that do not require supercritical extraction. These processes comprise sol-gel polymerization of a hydroxylated aromatic in the presence of at least one suitable electrophilic linking agent and at least one suitable solvent capable of strengthening the sol-gel. Also disclosed are the carbonized derivatives of the organic SPMs.
대표청구항▼
We claim: 1. A method for preparing an organic, small pore area material, said method comprising the steps of: (a) forming a solution comprising a hydroxylated aromatic, an electrophilic linking agent, and a carboxylic acid; (b) allowing said solution to form a sol-gel; and, (c) removing substantia
We claim: 1. A method for preparing an organic, small pore area material, said method comprising the steps of: (a) forming a solution comprising a hydroxylated aromatic, an electrophilic linking agent, and a carboxylic acid; (b) allowing said solution to form a sol-gel; and, (c) removing substantially all of the fluid portion of said sol-gel. 2. The method of claim 1, wherein the solution formed in step (a) further comprises a catalyzing agent. 3. The method of claim 2, wherein said catalyzing agent is independently selected from the group consisting of hydrochloric acid, sulfuric acid and hydrobromic acid. 4. The method of claim 1, wherein step (b) includes the substep of subjecting said solution to either: (i) a temperature or a pressure higher than ambient; or (ii) a temperature and a pressure higher than ambient. 5. The method of claim 1, wherein step (c) includes the substep of evaporating said fluid portion at ambient conditions. 6. The method of claim 1, further including the substep of subjecting said fluid portion to either: (i) higher than ambient temperatures or lower than ambient pressures; or (ii) higher than ambient temperatures and lower than ambient pressures. 7. The method of claim 1, wherein step (c) is substantially accomplished by subjecting said sol-gel to centrifugation. 8. The method of claim 1, wherein step (c) is substantially accomplished by subjecting said sol-gel to freeze drying. 9. The method of claim 1, wherein step (c) is substantially accomplished by subjecting said sol-gel to a gas pressure differential across said sol-gel. 10. The method of claim 1, wherein step (c) is substantially accomplished by supercritical extraction of said sol-gel. 11. The method of claim 1, further comprising the step (d) of pyrolizing said low density microcellular material at a pyrolysis temperature to form a carbonized derivative of said low density microcellular material. 12. A method for preparing an organic, low density microcellular material, said method comprising the steps of: (a) forming a solution comprising a hydroxylated aromatic, an electrophilic linking agent, and a carboxylic acid; (b) allowing said solution to form a sol-gel; and, (c) removing substantially all of the fluid portion of said sol-gel. 13. The method of claim 12, wherein the solution formed in step (a) further comprises a catalyzing agent. 14. The method of claim 13, wherein said catalyzing agent is independently selected from the group consisting of hydrochloric acid, sulfuric acid and hydrobromic acid. 15. The method of claim 12, wherein step (b) includes the substep of subjecting said solution to either: (i) a temperature or a pressure higher than ambient; or (ii) a temperature and a pressure higher than ambient. 16. The method of claim 12, wherein step (c) includes the substep of evaporating said fluid portion at ambient conditions. 17. The method of claim 12, further including the substep of subjecting said fluid portion to either: (i) higher than ambient temperatures or lower than ambient pressures; or (ii) higher than ambient temperatures and lower than ambient pressures. 18. The method of claim 12, wherein step (c) is substantially accomplished by subjecting said sol-gel to centrifugation. 19. The method of claim 12, wherein step (c) is substantially accomplished by subjecting said sol-gel to freeze drying. 20. The method of claim 12, wherein step (c) is substantially accomplished by subjecting said sol-gel to a gas pressure differential across said sol-gel. 21. The method of claim 12, wherein step (c) is substantially accomplished by supercritical extraction of said sol-gel. 22. The method of claim 12, further comprising the step (d) of pyrolizing said low density microcellular material at a pyrolysis temperature to form a carbonized derivative of said low density microcellular material. 23. The method of claim 1 or 12, wherein said hydroxylated aromatic comprises a hydroxylated benzene compound. 24. The method of claim 1 or 12, wherein said hydroxylated aromatic comprises a phenolic novolak compound. 25. The method of claim 1 or 12, wherein said electrophilic linking agent comprises an aldehyde. 26. The method of claim 1 or 12, wherein said electrophilic linking agent comprises furfural. 27. The method of claim 1 or 12, wherein said carboxylic acid comprises acetic acid, formic acid, propionic acid, butyric acid, pentanoic acid or an isomer thereof. 28. The method of claim 1 or 12, wherein said carboxylic acid comprises acetic acid.
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이 특허에 인용된 특허 (47)
Ramamurthi Sangeeta (West Worthington OH) Ramamurthi Mukund (West Worthington OH), Aerogel matrix composites.
Mayer Steven T. (San Leandro CA) Pekala Richard W. (Pleasant Hill CA) Morrison Robert L. (Modesto CA) Kaschmitter James L. (Pleasanton CA), Doping of carbon foams for use in energy storage devices.
Shmidt Creston D. ; Suh Kyung W. ; Imeokparia Daniel D. ; Malone Bruce A. ; Franklin Ken, Extruded, open-cell microcellular alkenyl aromatic polymer forms, process for making, and articles made therefrom.
Rilling Ken (Hamilton CAX) Dickson James (Hamilton CAX) Childs Ronald (Dundas CAX) Gagnon David R. (St. Paul MN), Interfacial polymerization in a porous substrate and substrates functionalized with photochemical groups.
Arnold ; Jr. Charles (Albuquerque NM) Aubert James H. (Albuquerque NM) Clough Roger L. (Albuquerque NM) Rand Peter B. (Albuquerque NM) Sylwester Alan P. (Albuquerque NM), Low density microcellular carbon foams and method of preparation.
Coronado Paul R. (Livermore CA) Poco John F. (Livermore CA) Hrubesh Lawrence W. (Pleasanton CA) Hopper Robert W. (Danville CA), Method for rapidly producing microporous and mesoporous materials.
Mayer Steven T. (San Leandro CA) Kaschmitter James L. (Pleasanton CA) Pekala Richard W. (Pleasant Hill CA), Method of low pressure and/or evaporative drying of aerogel.
Deshpande Ravindra (51 Michelle Dr. Apt. A 11 Lancaster PA 17603) Smith Douglas M. (1412 Marquette Pl. NE. Albuquerque NM 87122) Brinker C. Jeffrey (14 Eagle Nest Dr. NE. Albuquerque NM 87122), Preparation of high porosity xerogels by chemical surface modification..
Miller Larry M. ; Breindel Raymond M. ; Weekley Mitchell Z., Process for producing extruded foam products with higher levels of CO2 as a blowing agent.
Albert, Donald F.; Andrews, Greg R.; Bruno, Joseph W., Organic, open cell foam materials, their carbonized derivatives, and methods for producing same.
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