CAS: 55635-13-7; Alloxydim-Sodium

专利信息

专利号:US-5696217-A
优先权日:1994-05-24
标题 :Synthesis of microporous ceramics by ammonia pyrolysis of ceramic precursors
发明人：DISMUKES JOHN PICKETT; BRADLEY JOHN STEWART; JOHNSON JACK WAYNE; CORCORAN JR EDWARD WILLIAM
权利人:EXXON RESEARCH ENGINEERING CO
摘要:The present invention provides for microporous ceramic materials having a surface area in excess of 100 m2/gm and an open microporous cell structure wherein the micropores have a mean width of less than 20 Angstroms and wherein said microporous structure comprises a volume of greater than about 0.05 cm3/gm of the ceramic. The pyrolysis product of ceramic precursor oligomers or polymers having a number average molecular weight in the range of from about 200 to about 100,000 g/mole in an ammonia atmosphere at temperatures of up to less than about 1200 DEG C. gives rise to the microporous ceramics of the invention. Also provided is a process for the preparation of the microporous ceramics of the invention involving pyrolysis of the ceramic precursor under controlled conditions of heating and with intermediate hold times, up to temperatures of less than 1200 DEG C., preferably less than 1000 DEG C., to form a microporous ceramic product.

专利号:US-6624228-B1
优先权日:1994-05-24
标题:Synthesis of microporous ceramics
发明人：DISMUKES JOHN PICKETT; JOHNSON JACK WAYNE; CORCORAN JR EDWARD WILLIAM; VALLONE JOSEPH
权利人:EXXONMOBIL RES & ENG CO
摘要:The present invention provides for microporous ceramic materials having a surface area in excess of 50 m<2>/gm and an open microporous cell structure wherein the micropores have a mean width of less than 20 Angstroms and wherein said microporous structure comprises a volume of greater than about 0.015 cm<3>/gm of the ceramic. The invention also provides for a preceramic composite intermediate composition comprising a mixture of a ceramic precursor and finely divided particles comprising a non-silicon containing ceramic, carbon, or an inorganic compound having a decomposition temperature in excess of 400° C., whose pyrolysis product in inert atmosphere or in an ammonia atmosphere at temperatures of up to less than about 1100° C. gives rise to the microporous ceramics of the invention. Also provided is a process for the preparation of the microporous ceramics of the invention involving pyrolysis of the ceramic intermediate under controlled conditions of heating up to temperatures of less than 1100° C. to form a microporous ceramic product.

专利号:US-5952421-A
优先权日:1995-12-27
标题:Synthesis of preceramic polymer-stabilized metal colloids and their conversion to microporous ceramics
发明人：BRADLEY JOHN STEWART; HILL ERNESTINE WILLIAMS; DISMUKES JOHN P; TINDALL PAUL JAMES
权利人:EXXON RESEARCH ENGINEERING CO
摘要:The present invention provides for microporous ceramic materials having a surface area in excess of 70 m2/gm and an open microporous cell structure wherein the micropores have a mean width of less than 20 Angstroms and wherein said microporous structure comprises a volume of greater than about 0.03 cm3/gm of the ceramic. The invention also provides for a preceramic composite intermediate composition comprising a mixture of a ceramic precursor and nanoscale size metallic particles, whose pyrolysis product in inert atmosphere or in an ammonia atmosphere at temperatures of up to less than about 1100 DEG C. gives rise to the microporous ceramics of the invention. Also provided is a process for the preparation of the microporous ceramics of the invention involving pyrolysis of the composite intermediate under controlled conditions of heating up to temperatures of less than about 1100 DEG C. to form a microporous ceramic product.

专利号:US-6787668-B2
优先权日:2000-04-13
标 题 :2-amino-4,5 heptenoic acid derivatives useful as nitric oxide synthase inhibitors
发明人：PITZELE BARNETT S; SIKORSKI JAMES A; WEBBER RONALD KEITH
权利人:PHARMACIA CORP
摘要:The present invention is directed to a compound of formula I:or a pharmaceutically acceptable salt thereof, wherein:R1 is selected from the group consisting of H and methyl; andR2 is selected from the group consisting of H and methyl.The compounds possess useful nitric oxide synthetase inhibiting activity, and are expected to be useful in the treatment or prophylaxis of a disease or condition in which the synthesis or over synthesis of nitric oxide forms a contributory part.

专利号:WO-9532164-A1
优先权日:1994-05-24
标题:Synthesis of microporous ceramics by ammonia pyrolysis

专利号:WO-9724297-A1
优先权日:1995-12-27
标题 :Synthesis of preceramic polymer-stabilized metal colloids and their conversion to microporous ceramics