专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

91. 发明授权

US06423811B1 Low dielectric constant materials with polymeric networks 失效
公开(公告)号：US06423811B1
公开(公告)日：2002-07-23
申请号：US09619237
申请日：2000-07-19
申请人： Kreisler S. Lau , Feng Quan Liu , Boris Korolev , Emma Brouk , Ruslan Zherebin , David Nalewajek
发明人： Kreisler S. Lau , Feng Quan Liu , Boris Korolev , Emma Brouk , Ruslan Zherebin , David Nalewajek
IPC分类号： C08G802
CPC分类号： C08G69/48 , C08G61/02 , C08G61/12 , C08G65/4012 , C08G2650/20 , C08G2650/60 , C08L2312/00
摘要： A low dielectric constant material has a polymeric network that is fabricated from a first and a second component. The first component comprises a polymeric strand, and the second component comprises a molecule having a central portion with at least three arms extending from the central portion, wherein each of the arms includes a backbone with a reactive group. The first component and the second component form the polymeric network in a reaction that involves at least one of the reactive groups when the first and second components are thermally activated. Contemplated low dielectric constant materials are advantageously employed in the fabrication of electronic devices, and particularly contemplated devices include integrated circuits.

92. 发明授权

US06423757B1 Process for producing polymer foam using mixtures of pentafluoropropane and a hydrofluorocarbon having 3 to 6 carbon atoms 有权
标题翻译：使用五氟丙烷和具有3至6个碳原子的氢氟烃的混合物制备聚合物泡沫的方法
公开(公告)号：US06423757B1
公开(公告)日：2002-07-23
申请号：US09233721
申请日：1998-08-31
申请人： David P. Wilson , Rajiv R. Singh , Rajat S. Basu , Ellen L. Swan , David Nalewajek
发明人： David P. Wilson , Rajiv R. Singh , Rajat S. Basu , Ellen L. Swan , David Nalewajek
IPC分类号： C08J914
CPC分类号： C09K5/045 , C08J9/14 , C09K2205/22 , C09K2205/32 , Y10S521/902 , Y10S521/91
摘要： The invention discloses novel azeotrope-like mixtures of fluorinated compounds which are useful for heating and cooling as heat transfer agents and/or refrigerants. The azeotrope-like mixture comprises: (a) pentafluoropropane; and (b) a hydrofluorocarbon of the formula: CxFyHz, wherein x is 3, 4, 5, or 6 and y and z are each independently 1 or a positive whole number such that the result of y/(y+z) is greater than 0.67.
摘要翻译：本发明公开了可用作加热和冷却作为传热剂和/或制冷剂的氟化化合物的类似新颖的混合物。共沸混合物包含：（a）五氟丙烷; 和（b）下式的氢氟烃，其中x为3,4,5或6，y和z各自独立地为1或正整数，使得y /（y + z）的结果更大大于0.67。

93. 发明授权

US5856594A Process for the preparation of 1,1,2,2,3-pentafluoropropane 失效
标题翻译：制备1,1,2,2,3-五氟丙烷的方法
公开(公告)号：US5856594A
公开(公告)日：1999-01-05
申请号：US728537
申请日：1996-10-09
申请人： Alagappan Thenappan , Michael Van Der Puy , David Nalewajek
发明人： Alagappan Thenappan , Michael Van Der Puy , David Nalewajek
IPC分类号： C07C17/23 , C07C19/08
CPC分类号： C07C17/23
摘要： A process for the preparation of 1,1,2,2,3-pentafluoropropane is provided. In the process of the present invention, 1,3-dichloro-1,1,2,2,3-pentafluoropropane is catalytically reduced, using a platinum group metal supported on alumina, to 1,1,2,2,3-pentafluoropropane.
摘要翻译：提供了制备1,1,2,2,3-五氟丙烷的方法。在本发明的方法中，使用负载在氧化铝上的铂族金属，将1,3-二氯-1,1,2,2,3-五氟丙烷催化还原成1,1,2,2,3-五氟丙烷。

94. 发明授权

US5243080A Method of fluorinating by using N-fluoropyridinium pyridine heptafluorodiborate 失效
标题翻译：使用N-氟吡啶鎓吡啶七氟二硼酸酯进行氟化的方法
公开(公告)号：US5243080A
公开(公告)日：1993-09-07
申请号：US910461
申请日：1992-07-08
申请人： Michael Van Der Puy , David Nalewajek , George A. Shia , William J. Wagner
发明人： Michael Van Der Puy , David Nalewajek , George A. Shia , William J. Wagner
IPC分类号： C07D213/89 , C07F5/02
CPC分类号： C07D213/89 , C07F5/022
摘要： The present invention provides a novel compound represented as ##STR1## The present novel compound is prepared by reacting fluorine with pyridine-boron trifluoride and is useful as a fluorinating agent in the fluorination of organic compounds.
摘要翻译：本发明提供了一种新化合物，其表示为本发明的新化合物，其通过氟与吡啶 - 三氟化硼反应制备，并且可用作有机化合物的氟化中的氟化剂。

95. 发明授权

US4975212A Fluorinated lubricating compositions 失效
标题翻译：氟化润滑组合物
公开(公告)号：US4975212A
公开(公告)日：1990-12-04
申请号：US290120
申请日：1988-12-27
申请人： Raymond H. P. Thomas , David P. Wilson , David Nalewajek , Hang T. Pham
发明人： Raymond H. P. Thomas , David P. Wilson , David Nalewajek , Hang T. Pham
IPC分类号： C09K5/04 , C07C43/12 , C08G65/32 , C10M105/54 , C10M107/34 , C10M107/38 , C10M111/04 , C10M171/00 , C10N20/02 , C10N20/04 , C10N40/30
CPC分类号： C10M171/008 , C10M107/38 , C10M111/04 , C10M2203/06 , C10M2203/10 , C10M2203/102 , C10M2203/104 , C10M2203/106 , C10M2203/108 , C10M2205/00 , C10M2205/026 , C10M2205/04 , C10M2207/021 , C10M2207/026 , C10M2207/027 , C10M2207/028 , C10M2207/125 , C10M2207/129 , C10M2207/144 , C10M2207/146 , C10M2207/262 , C10M2207/28 , C10M2209/084 , C10M2209/086 , C10M2209/102 , C10M2211/003 , C10M2211/022 , C10M2211/06 , C10M2211/08 , C10M2213/00 , C10M2213/02 , C10M2213/023 , C10M2213/04 , C10M2213/043 , C10M2213/06 , C10M2213/0606 , C10M2213/062 , C10M2213/0623 , C10M2215/06 , C10M2215/065 , C10M2215/086 , C10M2215/28 , C10M2217/023 , C10M2217/028 , C10M2217/06 , C10M2219/02 , C10M2219/022 , C10M2219/024 , C10M2219/044 , C10M2219/046 , C10M2219/082 , C10M2223/04 , C10M2223/042 , C10M2223/045 , C10M2223/047 , C10M2223/065 , C10M2225/00 , C10M2225/02 , C10M2227/09 , C10M2229/02 , C10M2229/05 , C10M2229/051 , C10N2210/06 , C10N2240/00 , C10N2240/22 , C10N2240/30 , C10N2240/50 , C10N2240/52 , C10N2240/54 , C10N2240/56 , C10N2240/58 , C10N2240/60 , C10N2240/66
摘要： The present invention provides a novel lubricating composition comprising a polyoxyalkylene glycol having a cap of a fluorinated alkyl group on at least one end thereof. The composition has a molecular weight between 300 and 3,000, a viscosity of about 5 to about 150 centistokes at 37.degree. C., and a viscosity index of at least 20. The composition is miscible in combination with tetrafluoroethane in the range between -40.degree. C. and at least +20.degree. C.The novel lubricating composition is particularly useful with tetrafluoroethane in refrigeration and air-conditioning applications. As such, the present invention also provides a composition for use in refrigeration and air-conditioning comprising: (a) tetrafluoroethane; and (b) a sufficient amount to provide lubrication of at least one polyoxyalkylene glycol having a cap of fluorinated alkyl group on at least one end thereof. The lubricant has a molecular weight of about 300 to about 3,000, a viscosity of about 5 to about 150 centistokes at 37.degree. C., and a viscosity index of at least 20. The lubricant is miscible in combination with the tetrafluoroethane in the range between about -40.degree. C. and at least about +20.degree. C.
摘要翻译：本发明提供一种新型的润滑组合物，其包含在其至少一端具有氟化烷基的盖的聚氧亚烷基二醇。该组合物的分子量为300至3,000，在37℃下的粘度为约5至约150厘沲，粘度指数为至少20.该组合物可与四氟乙烷混合在-40℃范围内 C.和至少+20℃。新型润滑组合物在制冷和空调应用中特别适用于四氟乙烷。因此，本发明还提供了一种用于制冷和空调的组合物，其包含：（a）四氟乙烷; 和（b）足够的量以在其至少一端上提供具有氟化烷基的帽的至少一种聚氧亚烷基二醇的润滑。润滑剂的分子量为约300至约3,000，在37℃下的粘度为约5至约150厘沲，粘度指数为至少20.润滑剂可与四氟乙烷混合在一起，范围在约-40℃和至少约+20℃

96. 发明授权

US4405568A Recovery of gadolinium and gallium oxides 失效
标题翻译：回收钆和氧化镓
公开(公告)号：US4405568A
公开(公告)日：1983-09-20
申请号：US451297
申请日：1982-12-20
申请人： David Nalewajek
发明人： David Nalewajek
IPC分类号： C01F17/00 , C01G15/00
CPC分类号： C01G15/00 , C01F17/0043 , C01P2006/80
摘要： A process is described whereby the "saw kerf" can be reprocessed in sufficient purity to be re-used in the process, thereby improving the economics of production of GGG wafers significantly. Gadolinium and gallium oxides are recovered and separated from transition metal impurities introduced during fabrication of GGG wafers. The process "saw kerf" produced from slicing the crystal boule is dissolved by refluxing in HNO.sub.3, treated with oxalic acid and the resulting oxalates and nitrates separated. Pyrolysis of these salts at temperatures of at least 850.degree. C. resulted in their conversion to Ga.sub.2 O.sub.3 of purity >99.99%. The process can be extended to include purification and re-use of by-products generated in other grinding and polishing operations which may result in the recycling of the order of 80% of the generated by-products.
摘要翻译：描述了一种方法，其中“锯切”可以以足够的纯度重新加工以在该过程中重新使用，从而显着提高了GGG晶片的生产经济性。钆和镓氧化物被回收并与制造GGG晶片期间引入的过渡金属杂质分离。通过在HNO 3中回流溶解通过切片晶体棒产生的过程“锯切”，用草酸处理，所得草酸盐和硝酸盐分离。这些盐在至少850℃的温度下热分解，导致其转化为纯度> 99.99％的Ga 2 O 3。该方法可以扩展到包括在其它研磨和抛光操作中产生的副产物的纯化和再利用，这可能导致生成的副产物的80％的量级的再循环。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式