专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明授权

US4523005A Extrudable polyurethane for prosthetic devices prepared from a diisocyanate, a polytetramethylene ether polyol, and 1,4-butane diol 失效
标题翻译：由二异氰酸酯，聚四亚甲基醚多元醇和1,4-丁二醇制备的用于假体装置的可挤出聚氨酯
公开(公告)号：US4523005A
公开(公告)日：1985-06-11
申请号：US600568
申请日：1984-04-17
申请人： Michael Szycher
发明人： Michael Szycher
IPC分类号： C08G18/48 , C08G18/66 , C08G18/73 , C08G18/75 , C08G18/30
CPC分类号： C08G18/6674 , C08G18/4854 , C08G18/6607 , C08G18/73 , C08G18/75
摘要： Reaction product of an aliphatic organic diisocyanate, a high molecular weight polyether polyol (poly tetra methylene ether glycol) and 1,4 butane diol. The resulting polymers have thromboresistant properties, a long flexural life and are extrudable. The polyurethane polymer is ideal for forming transvenous cardiac pacemaker leads, blood bags, intravenous and intra-arterial catheters and tubing, and other shaped devices which must be formed of a blood compatible material.
摘要翻译：脂肪族有机二异氰酸酯，高分子量聚醚多元醇（聚四亚甲基醚二醇）和1,4-丁二醇的反应产物。所得聚合物具有抗血栓性，长的弯曲寿命并且是可挤压的。聚氨酯聚合物是形成经静脉心脏起搏器引线，血袋，静脉内和动脉内导管和管道以及必须由血液相容材料形成的其它成形装置的理想选择。

32. 发明授权

US5455516A Meter and method for in situ measurement of the electromagnetic properties of various process materials using cutoff frequency characterization and analysis 失效
标题翻译：使用截止频率表征和分析来原位测量各种工艺材料的电磁特性的仪表和方法
公开(公告)号：US5455516A
公开(公告)日：1995-10-03
申请号：US45854
申请日：1993-04-09
申请人： Buford R. Jean , Gary L. Warren , F. Lynn Whitehead
发明人： Buford R. Jean , Gary L. Warren , F. Lynn Whitehead
IPC分类号： G01R27/02 , G01N22/00 , G01N22/04 , G01R27/26 , G01R27/04
CPC分类号： G01N22/04
摘要： The present invention provides an apparatus and method for the measurement of, for example, the moisture in a material or, more generally, for the measurement of any material parameter which may be inferred by measuring the electromagnetic properties of the material under investigation. The electromagnetic properties of use in the present invention are complex electrical permittivity or the magnetic permeability of the material. The meter apparatus of the present invention comprises a controllable source of electromagnetic energy having stable selectable frequency. The controllable source of electromagnetic energy is coupled to a material measurement chamber by means of probes, loops, antennas, apertures or other structures so as to establish an electromagnetic wave inside the measurement chamber thereby causing the wave to interact with the material contained in the chamber. Its preferred structure comprises coupling of microwave energy from a coaxial transmission line to the measurement chamber over a multi-octave bandwidth via an intermediate microstrip to slotline coupling circuit.
摘要翻译：本发明提供了用于测量材料中的水分的装置和方法，或者更一般地，用于测量可以通过测量所研究的材料的电磁特性来推断的任何材料参数。本发明中使用的电磁特性是复合的介电常数或材料的磁导率。本发明的仪表装置包括具有稳定可选择频率的可控电磁能源。可控电磁能源通过探头，环，天线，孔或其他结构耦合到材料测量室，以便在测量室内建立电磁波，从而使波与包含在腔室中的材料相互作用。其优选结构包括通过中间微带至槽线耦合电路将来自同轴传输线的微波能量通过多倍频程带宽耦合到测量室。

33. 发明授权

US5391420A Fragrance-laden pouch samplers and process for their manufacture 失效
标题翻译：装满香料的小袋采样器及其制造工艺
公开(公告)号：US5391420A
公开(公告)日：1995-02-21
申请号：US59452
申请日：1993-05-07
申请人： Matthew W. Bootman , Daniel L. Brown , Elaine Trebek-Kares , Randall E. Adams
发明人： Matthew W. Bootman , Daniel L. Brown , Elaine Trebek-Kares , Randall E. Adams
IPC分类号： A45D37/00 , A45D40/00 , A47F7/28 , B65D75/30 , G09F5/04 , B32B9/00
CPC分类号： B65D75/30 , A45D37/00 , A45D40/0087 , A47F7/286 , G09F5/04 , G09F2005/046 , Y10S428/905 , Y10S428/914 , Y10T428/1443 , Y10T428/15 , Y10T428/23 , Y10T428/24793 , Y10T428/249984 , Y10T428/249997 , Y10T428/2839 , Y10T428/31993
摘要： Label-like, hermetically-sealed perfume pouch samplers with artwork on their top surface and a pressure sensitive adhesive bottom surface. The adhesive bottom surface may be employed to attach the pouch labels to pages of a magazine or other mailer, providing an efficient method of mass distribution of perfume samples. The fragrance is stored in a perfume-releasing article such as an ultraviolet radiation-cured perfume-doped polymer, or a fragrance-laden polymer gel of modified cellulosic, ethyl alcohol, fragrance oil, an antioxidant, and water, surrounded by two perfume impervious sealed barrier layers. There is disclosed a method of manufacturing the perfume pouch labels on a support web that can be wound onto rolls from which the pouch labels may be readily released and applied rapidly and precisely to advertising pages.
摘要翻译：标签式密封香水袋采样器，其顶部表面具有图案，压敏胶底面。可以使用粘合剂底表面将袋标签附接到杂志或其他邮件的页面，从而提供了一种有效的香料样品质量分配方法。将香料储存在香料释放制品中，例如紫外线辐射固化的香料掺杂聚合物或改性纤维素，乙醇，香料油，抗氧化剂和水的芳香聚合物凝胶，被两种不透水的香料包围密封阻隔层。公开了一种在支撑纤维网上制造香料袋标签的方法，其可以卷绕到卷上，从而可以容易地释放袋标签并将其迅速且准确地应用于广告页。

34. 发明授权

US5310681A Selective detection with high speed gas chromatography 失效
标题翻译：高速气相色谱法选择性检测
公开(公告)号：US5310681A
公开(公告)日：1994-05-10
申请号：US73917
申请日：1993-06-09
申请人： David P. Rounbehler , Eugenie Hainsworth , David P. Lieb
发明人： David P. Rounbehler , Eugenie Hainsworth , David P. Lieb
IPC分类号： G01N1/00 , G01N1/02 , G01N1/22 , G01N1/28 , G01N1/40 , G01N21/76 , G01N27/417 , G01N30/02 , G01N30/06 , G01N30/08 , G01N30/12 , G01N30/14 , G01N30/16 , G01N30/30 , G01N30/40 , G01N30/46 , G01N30/62 , G01N30/64 , G01N30/72 , G01N30/84 , G01N31/12 , G01N33/00 , G01N33/22 , G01V9/00 , G01N25/54
CPC分类号： G01N30/461 , G01N1/02 , G01N27/4175 , G01N30/08 , G01N30/12 , G01N30/84 , G01N33/0057 , G01V9/007 , G01N1/2214 , G01N1/2226 , G01N1/28 , G01N1/40 , G01N2001/022 , G01N2001/028 , G01N2030/025 , G01N2030/065 , G01N2030/085 , G01N2030/121 , G01N2030/122 , G01N2030/123 , G01N2030/125 , G01N2030/126 , G01N2030/143 , G01N2030/167 , G01N2030/3007 , G01N2030/3046 , G01N2030/3053 , G01N2030/3061 , G01N2030/3069 , G01N2030/3076 , G01N2030/3084 , G01N2030/626 , G01N2030/642 , G01N2030/8405 , G01N21/76 , G01N30/14 , G01N30/40 , G01N30/62 , G01N30/72 , Y10T436/17 , Y10T436/179228
摘要： A highly selective, sensitive, fast detection system and method are disclosed for detecting vapors of specific compounds in air. Vapors emanating from compounds such as explosives, or stripped from surfaces using heat and suction from a hand-held sample gun, are collected on surfaces coated with gas chromatograph (GC) material which trap explosives vapors but repel nitric oxide, then are desorbed and concentrated in one or more cold spot concentrators. A high speed gas chromatograph (GC) separates the vapors, after which specific vapors are decomposed in two pyrolyzers arranged in parallel and the resulting nitric oxide is detected. A low temperature pyrolyzer with silver produces NO from nitramines or nitrite esters; a high temperature pyrolyzer decomposes all explosives vapors to permit detection of the remaining explosives. Also disclosed is a series arrangement of pyrolyzers and gas chromatographs and an NO detector to time-shift detection of certain vapors and facilitate very fast GC analyses. The use of hydrogen as a carrier gas, plus unique collectors and concentrators, high speed heaters, NO detectors, and very fast, temperature-programmable GC's enhance selectivity, sensitivity and speed of detection.
摘要翻译：公开了一种高选择性，灵敏，快速的检测系统和方法，用于检测空气中特定化合物的蒸气。从化合物如爆炸物或从手持式样品枪吸取热量从表面剥离的蒸气被收集在涂有气相色谱（GC）材料的表面上，该气相色谱（GC）材料捕获爆炸物蒸气但排斥一氧化氮，然后被解吸和浓缩在一个或多个冷点浓缩器中。高速气相色谱仪（GC）分离蒸汽，之后特定的蒸汽在平行排列的两个热解器中分解，并检测到所产生的一氧化氮。含有银的低温热解器由硝胺或亚硝酸酯产生NO; 高温热解器分解所有炸药蒸气，以便检测剩余的炸药。还公开了热解器和气相色谱仪的串联布置和用于某些蒸气的时移检测的NO检测器，并且促进非常快速的GC分析。使用氢气作为载气，加上独特的收集器和浓缩器，高速加热器，NO检测器，以及非常快速的温度可编程GC增强了选择性，灵敏度和检测速度。

35. 发明授权

US5268302A Selective, high speed detection of vapors with analysis of multiple GC-separated portions 失效
标题翻译：通过分析多个GC分离部分，选择性，高速检测蒸汽
公开(公告)号：US5268302A
公开(公告)日：1993-12-07
申请号：US35541
申请日：1993-03-22
申请人： David P. Rounbehler , David P. Lieb
发明人： David P. Rounbehler , David P. Lieb
IPC分类号： G01N1/22 , G01N21/76 , G01N30/12 , G01N30/16 , G01N30/30 , G01N30/46 , G01N30/84 , G01N31/12 , G01N30/08 , G01N1/18 , G01N30/88 , G01N33/94
CPC分类号： G01N30/84 , G01N30/12 , G01N31/12 , G01N2030/121 , G01N2030/128 , G01N2030/3046 , G01N2030/8405 , G01N21/76 , G01N30/16 , G01N30/461 , Y10S436/816 , Y10S436/901 , Y10T436/145555 , Y10T436/147777 , Y10T436/170769 , Y10T436/173845 , Y10T436/255
摘要： A method and apparatus for selective, high speed detection of vapors of specific gas-chromatographically-separable compounds. In the disclosed method separate analyses are performed on two portions of a gas sample formed by flash-heating trapped vapors to successively higher temperatures while flowing hydrogen carrier gas over coatings in/on which the vapors are held. Within a total time interval of about twenty seconds 1) two sample portions are formed, 2) each portion is rapidly separated in two series-connected, high speed, temperature-programmed gas chromatographs, and 3) specific compounds are identified by detection of NO gas formed during an oxidative pyrolysis of each separated portion. One application of the described method and apparatus is the rapid, selective, and sensitive detection of nitrogen-containing compounds such as the drugs methamphetamine, cocaine, and heroin.
摘要翻译：用于选择性，高速检测特定气相色谱分离化合物的蒸气的方法和装置。在所公开的方法中，将通过闪蒸加热捕获的蒸气形成的气体样品的两部分分别进行分析，同时使氢载体气体流过其上保持蒸汽的涂层。在大约20秒的总时间间隔内1）形成两个样品部分，2）每个部分在两个串联连接的高速，温度程序化的气相色谱仪中快速分离，3）通过检测NO 在每个分离部分的氧化热解期间形成气体。所述方法和装置的一个应用是对含氮化合物如甲基苯丙胺，可卡因和海洛因的快速，选择性和灵敏的检测。

36. 发明授权

US5092218A Selective detection of explosives vapors 失效
标题翻译：炸药蒸气的选择性检测
公开(公告)号：US5092218A
公开(公告)日：1992-03-03
申请号：US81919
申请日：1987-07-08
申请人： David H. Fine , David P. Rounbehler
发明人： David H. Fine , David P. Rounbehler
IPC分类号： G01N1/00 , G01N1/02 , G01N1/22 , G01N1/28 , G01N1/40 , G01N21/76 , G01N27/417 , G01N30/02 , G01N30/06 , G01N30/08 , G01N30/12 , G01N30/14 , G01N30/16 , G01N30/30 , G01N30/40 , G01N30/46 , G01N30/62 , G01N30/64 , G01N30/72 , G01N30/84 , G01N31/12 , G01N33/00 , G01N33/22 , G01V9/00
CPC分类号： G01N30/461 , G01N1/02 , G01N30/08 , G01N30/12 , G01N30/84 , G01N33/0057 , G01V9/007 , G01N1/2214 , G01N1/2226 , G01N1/28 , G01N1/40 , G01N2001/022 , G01N2001/028 , G01N2030/025 , G01N2030/065 , G01N2030/085 , G01N2030/121 , G01N2030/122 , G01N2030/123 , G01N2030/125 , G01N2030/126 , G01N2030/143 , G01N2030/167 , G01N2030/3007 , G01N2030/3046 , G01N2030/3053 , G01N2030/3061 , G01N2030/3069 , G01N2030/3076 , G01N2030/3084 , G01N2030/626 , G01N2030/642 , G01N2030/8405 , G01N21/76 , G01N30/14 , G01N30/40 , G01N30/62 , G01N30/72
摘要： A highly selective, sensitive, fast detection system and method are disclosed for detecting vapors of specific compounds in air. Vapors emanating from compounds such as explosives, or stripped from surfaces using heat and suction from a hand-held sample gun, are collected on surfaces coated with gas chromatograph (GC) material which trap explosives vapors but repel nitric oxide, then are desorbed and concentrated in one or more cold spot concentrators. A high speed gas chromatograph (GC) separates the vapors, after which specific vapors are decomposed in two pyrolyzers arranged in parallel and the resulting nitric oxide is detected. A low temperature pyrolyzer with silver produces NO from nitramines or nitrite esters; a high temperature pyrolyzer decomposes all explosives vapors to permit detection of the remaining explosives. Also disclosed is a series arrangement of pyrolyzers and gas chromatographs and an NO detector to time-shift detection of certain vapors and facilitate very fast GC analyses. The use of hydrogen as a carrier gas, plus unique collectors and concentrators, high speed heaters, NO detectors, and very fast, temperature-programmable GC's enhance selectivity, sensitivity and speed of detection.
摘要翻译：公开了一种高选择性，灵敏，快速的检测系统和方法，用于检测空气中特定化合物的蒸气。从化合物如爆炸物或从手持式样品枪吸取热量从表面剥离的蒸气被收集在涂有气相色谱（GC）材料的表面上，该气相色谱（GC）材料捕获爆炸物蒸气但排斥一氧化氮，然后被解吸和浓缩在一个或多个冷点浓缩器中。高速气相色谱仪（GC）分离蒸汽，之后特定的蒸汽在平行排列的两个热解器中分解，并检测到所产生的一氧化氮。含有银的低温热解器由硝胺或亚硝酸酯产生NO; 高温热解器分解所有炸药蒸气，以便检测剩余的炸药。还公开了热解器和气相色谱仪的串联布置和用于某些蒸气的时移检测的NO检测器，并且促进非常快速的GC分析。使用氢气作为载气，加上独特的收集器和浓缩器，高速加热器，NO检测器和非常快速的温度可编程GC增强了选择性，灵敏度和检测速度。

37. 发明授权

US5092217A Method of calibrating a vapor detector 失效
标题翻译：校准蒸汽检测器的方法
公开(公告)号：US5092217A
公开(公告)日：1992-03-03
申请号：US081914
申请日：1987-07-08
申请人： Eugene K. Achter , Gregory J. Wendell
发明人： Eugene K. Achter , Gregory J. Wendell
IPC分类号： G01N1/00 , G01N1/02 , G01N1/22 , G01N1/28 , G01N1/40 , G01N21/76 , G01N27/417 , G01N30/02 , G01N30/06 , G01N30/08 , G01N30/12 , G01N30/14 , G01N30/16 , G01N30/30 , G01N30/40 , G01N30/46 , G01N30/62 , G01N30/64 , G01N30/72 , G01N30/84 , G01N31/12 , G01N33/00 , G01N33/22 , G01V9/00
CPC分类号： G01N30/461 , G01N1/02 , G01N30/08 , G01N30/12 , G01N30/84 , G01N33/0057 , G01V9/007 , G01N1/2214 , G01N1/2226 , G01N1/28 , G01N1/40 , G01N2001/022 , G01N2001/028 , G01N2030/025 , G01N2030/065 , G01N2030/085 , G01N2030/121 , G01N2030/122 , G01N2030/123 , G01N2030/125 , G01N2030/126 , G01N2030/143 , G01N2030/167 , G01N2030/3007 , G01N2030/3046 , G01N2030/3053 , G01N2030/3061 , G01N2030/3069 , G01N2030/3076 , G01N2030/3084 , G01N2030/626 , G01N2030/642 , G01N2030/8405 , G01N21/76 , G01N30/14 , G01N30/40 , G01N30/62 , G01N30/72
摘要： A highly selective, sensitive, fast detection system and method are disclosed for detecting vapors of specific compounds in air. Vapors emanating from compounds such as explosives, or stripped from surfaces using heat and suction from a hand-held sample gun, are collected on surfaces coated with gas chromatograph (GC) material which trap explosives vapors but repel nitric oxide, then are desorbed and concentrated in one or more cold spot concentrators. A high speed gas chromatograph (GC) separates the vapors, after which specific vapors are decomposed in two pyrolyzers arranged in parallel and the resulting nitric oxide is detected. A low temperature pyrolyzer with silver produces NO from nitramines or nitrite esters; a high temperature pyrolyzer decomposes all explosives vapors to permit detection of the remaining explosives. Also disclosed is a series arrangement of pyrolyzers and gas chromatographs and an NO detector to time-shift detection of certain vapors and facilitate very fast GC analyses. The use of hydrogen as a carrier gas, plus unique collectors and concentrators, high speed heaters, NO detectors, and very fast, temperature-programmable GC's enhance selectivity, sensitivity and speed of detection.
摘要翻译：公开了一种高选择性，灵敏，快速的检测系统和方法，用于检测空气中特定化合物的蒸气。从化合物如爆炸物或从手持式样品枪吸取热量从表面剥离的蒸气被收集在涂有气相色谱（GC）材料的表面上，该气相色谱（GC）材料捕获爆炸物蒸气但排斥一氧化氮，然后被解吸和浓缩在一个或多个冷点浓缩器中。高速气相色谱仪（GC）分离蒸汽，之后特定的蒸汽在平行排列的两个热解器中分解，并检测到所产生的一氧化氮。含有银的低温热解器由硝胺或亚硝酸酯产生NO; 高温热解器分解所有炸药蒸气，以便检测剩余的炸药。还公开了热解器和气相色谱仪的串联布置和用于某些蒸气的时移检测的NO检测器，并且促进非常快速的GC分析。使用氢气作为载气，加上独特的收集器和浓缩器，高速加热器，NO检测器和非常快速的温度可编程GC增强了选择性，灵敏度和检测速度。

38. 发明授权

US4909089A Walk-in inspection apparatus for producing air samples 失效
标题翻译：用于生产空气样品的步入式检查装置
公开(公告)号：US4909089A
公开(公告)日：1990-03-20
申请号：US272845
申请日：1988-11-18
申请人： Eugene K. Achter , Edward J. Burke , Gabor Miskolczy , Ain A. Sonin
发明人： Eugene K. Achter , Edward J. Burke , Gabor Miskolczy , Ain A. Sonin
IPC分类号： G01N1/00 , G01N1/02 , G01N1/22 , G01N1/24 , G01V9/00
CPC分类号： G01V9/007 , G01N1/24 , G01N2001/024
摘要： Disclosed is a walk-in inspection apparatus for active production of air samples containing vapors of explosives, drugs, or other substances carried by a person. The apparatus includes a U-shaped booth with an open end through which a person walks past walls which may contain a metal detector, then stands facing a vertical end wall. In the collection of an air sample a blower outside the booth sucks a large volume of air around the person and horizontally through a vertical array of shaped funnels in the end wall and through ducts connected to a collection manifold for subsequent analysis. Infrared heaters in the end wall heat the clothing and skin of the person during sampling, and many small nozzles extending through the end wall direct low volume, high momentum pulsed jets of puffs of air at the person to dislodge vapors, expel air from beneath clothing, and disrupt stagnant boundary layers of air near the person. Curved shapes of portions of the booth and funnels provide smooth, low loss airflow, and height and distance sensors facilitate automatic operation of the inspection apparatus.

39. 发明授权

US4896547A Air-sampling apparatus with easy walk-in access 失效
标题翻译：空气采样设备，方便进入
公开(公告)号：US4896547A
公开(公告)日：1990-01-30
申请号：US272951
申请日：1988-11-18
申请人： Michel D. Arney , Gianfranco Zaccai , Eugene K. Achter , Edward J. Burke , Gabor Miskolczy , Ain A. Sonin
发明人： Michel D. Arney , Gianfranco Zaccai , Eugene K. Achter , Edward J. Burke , Gabor Miskolczy , Ain A. Sonin
IPC分类号： G01N1/00 , G01N1/02 , G01N1/22 , G01V9/00
CPC分类号： G01N1/2273 , G01V9/007 , G01N2001/024 , G01N2001/2276
摘要： Disclosed is a walk-in inspection apparatus for active production of air samples containing vapors of explosives, drugs, or other substances carried by a person. The apparatus includes a U-shaped booth with an open end through which a person walks past walls which may contain a metal detector, then stands in front of a mesh screen facing a vertical end wall containing a vertical array of shaped funnels. Light-transmissive wall sections near the end wall help encourage entry of the person into the booth, and the light colored mesh screen draws attention of a person in the booth away from the darker funnels. In the collection of an air sample a blower outside the booth sucks a large volume of air around the person and horizontally through the funnels in the end wall and through ducts into a collection manifold for subsequent analysis. During sampling, infrared heaters in the end wall heat the clothing and skin of the person and many small nozzles extending through the end wall direct pulsed jets or puffs of air at the person to dislodge vapors, expel air from beneath clothing, and disrupt stagnant boundary layers of air near the person. Substantially all of the air drawn around the person is collected, and curved shapes of portions of the booth, funnels, and ducts provide smooth, low loss airflow to the collection manifold.
摘要翻译：公开了一种用于主动生产含有爆炸物，药物或人携带的其他物质的空气样本的步入式检查装置。该装置包括具有开口端的U形展位，人们通过该展开端穿过可能包含金属检测器的墙壁，然后站立在面向垂直端壁的网格屏幕的前面，该垂直端壁包含垂直排列的成形漏斗。端壁附近的透光墙部分有助于鼓励人员进入展位，浅色的网状屏幕可以吸引展位的人员远离暗处漏斗的注意力。在收集空气样本时，展位外的鼓风机吸引人体周围的大量空气，水平地穿过端壁的漏斗，并通过管道进入收集歧管以进行后续分析。在采样过程中，端壁的红外加热器加热了人的衣服和皮肤，许多小喷嘴延伸穿过端壁直接喷射或吹起空气，以排除蒸气，排出衣服下方的空气，并破坏停滞的边界靠近人的空气层。基本上收集人体周围的空气，展位，漏斗和管道部分的弯曲形状向收集歧管提供平滑，低损失的气流。

40. 再颁专利

USRE32991E Drug dispensing wound dressing 失效
标题翻译：药物分配伤口敷料
公开(公告)号：USRE32991E
公开(公告)日：1989-07-18
申请号：US223896
申请日：1988-07-25
申请人： Michael Szycher , Donald J. Dempsey , Jonathan L. Rolfe
发明人： Michael Szycher , Donald J. Dempsey , Jonathan L. Rolfe
IPC分类号： A61F13/15 , A61L15/26 , A61L15/44 , C08G18/67 , C08G18/75 , C08L75/16
CPC分类号： C08G18/755 , A61L15/26 , A61L15/44 , C08G18/672 , C08L75/16 , A61F2013/530007 , A61L2300/402 , A61L2300/404 , A61L2300/41 , A61L2300/418 , Y10T428/2848 , Y10T442/3854
摘要： The disclosed wound dressings have a drug dispersed throughout a polyurethane matrix that is the reaction product of: (A) An isocyante terminated prepolymer formed by reaction of isophorone diisocyanate and a marcoglycol and (B) a monomer containing hydroxyl and vinyl groups. The reaction product is a vinyl terminated polyurethane oligomer which is liquid at room temperature and which may be readily admixed with a pharmacoactive substance and a photosensitizer, formed into a film and cured by exposure to UV light without release of heat.In the most preferred embodiments the foregoing oligomer is codissolved in an organic solvent with a polyurethane polymer which is the reaction product of:dicyclohexyl methane diisocyanate;a polytetramethylene ether polyol having a molecular weight in the range of 1000-3000 daltons; and1,4-butane diol.That solution is then admixed with the pharmacoactive agent, formed into a film and cured.

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