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    LOW VISCOSITY POLY(ALKYNYL CARBAMATE) PREPOLYMERS
    31.
    发明申请
    LOW VISCOSITY POLY(ALKYNYL CARBAMATE) PREPOLYMERS 有权

    公开(公告)号：US20210155743A1

    公开(公告)日：2021-05-27

    申请号：US16693914

    申请日：2019-11-25

    申请人： Covestro LLC ,  The University Of Southern Mississippi

    发明人： Robson F. Storey ,  Alan Ekin ,  R. Hunter Cooke, III ,  Jie Wu

    IPC分类号： C08G18/42 ,  C08G18/28 ,  C08G18/38 ,  C08G18/22

    摘要： An alternative polyurethane composition is provided which comprises a reaction product of an azidated polyol and a poly(alkynyl carbamate) prepolymer, wherein reaction occurs at a temperature of from 20° C. to 200° C., optionally in the presence of a catalyst, wherein the poly(alkynyl carbamate) prepolymer comprises a reaction product of stoichiometric equivalents of a polyisocyanate and a component comprising 1-100% of an alkynol-ether of the formula (I): HC≡C—R—OH (I), wherein R is a linear or branched ether chain having from 1 to 15 atoms, and wherein the remainder of the hydroxyl-functional component comprises a first alkynol. The inclusion of an alkynol-ether reduces the viscosity of the composition without compromising its performance. The inventive alternative polyurethane compositions may find use in providing coatings, adhesives, sealants, films, elastomers, castings, foams, and composites.

    AZIDO-ALKYNE CLICK COMPOSITIONS
    33.
    发明申请
    AZIDO-ALKYNE CLICK COMPOSITIONS 有权

    公开(公告)号：US20210155734A1

    公开(公告)日：2021-05-27

    申请号：US16693976

    申请日：2019-11-25

    申请人： Covestro LLC ,  The University Of Southern Mississippi

    发明人： Jie Wu ,  Robson F. Storey ,  Alan Ekin

    IPC分类号： C08G18/10 ,  C08G18/67 ,  C08G18/62 ,  C08G18/80 ,  C08G18/24 ,  C09D175/16

    摘要： The present invention provides an alternative polyurethane composition comprising the reaction product of an azidated polyol and a poly(alkynyl carbamate) prepolymer reacted at an azide to alkyne molar ratio of greater than 1:1, wherein the poly(alkynyl carbamate) prepolymer comprises a reaction product of a polyisocyanate and an alkynol. In various embodiments, the azide to alkyne molar ratio is from greater than 1:1 to 3:1, in certain embodiments, from 1.5:1 to 3:1, and in particular embodiments, 1.8:1. The greater than stoichiometric ratio of azide to alkyne provides coatings, adhesives, sealants, films, elastomers, castings, and composites having a better cure performance as measured by glass transition temperature (Tg), MEK double rubs and degree of swelling.

    Gold catalyzed polymerization reactions of unsaturated substrates
    34.
    发明授权
    Gold catalyzed polymerization reactions of unsaturated substrates 有权

    公开(公告)号：US10711092B2

    公开(公告)日：2020-07-14

    申请号：US16138162

    申请日：2018-09-21

    申请人： Jason D. Azoulay ,  Joshua Tropp ,  Eric King

    发明人： Jason D. Azoulay ,  Joshua Tropp ,  Eric King

    IPC分类号： C08G61/10 ,  C08G61/12 ,  C08G61/02

    摘要： The present invention provides novel methods and processes for polymerizing unsaturated substrates, such as alkyne bearing monomers, with arenes. The polymerizations are catalyzed by gold (Au) catalysts/complexes and/or other cocatalysts. The invention further provides novel structurally complex polymers prepared in high yield via an intermolecular polyhydroarylation mechanism. Such resulting products comprise oligomeric and polymeric materials with novel molecular architectures and microstructures, which subsequently impart unique properties. The invention includes both the synthesis methods and processes and the resulting compounds and compositions of matter.

    Method of attaching drug compounds to non-reactive polymer surfaces
    38.
    发明授权
    Method of attaching drug compounds to non-reactive polymer surfaces 有权
    将药物化合物连接到非反应性聚合物表面的方法

    公开(公告)号：US07854941B2

    公开(公告)日：2010-12-21

    申请号：US12069726

    申请日：2008-02-12

    申请人： Marek W. Urban ,  Nattharika Aumsuwan

    发明人： Marek W. Urban ,  Nattharika Aumsuwan

    IPC分类号： A61F3/00 ,  A61F21/00

    CPC分类号： A61K47/30 ,  A61K31/43 ,  A61K31/7036

    摘要： Polymers are disclosed that are chemically modified to retard bacterial growth. Such modified polymers (e.g. ePTFE and polypropylene) are produced by first creating acid groups on the polymer surface through reactions with an anhydride. The acid groups are then linked to polyethylene glycol (PEG) through esterification or other reactions such as amidation. Preferably, at least two different molecular weight PEG species are employed. The antimicrobial surface is completed by linking antibiotics (e.g. β-lactam antibiotics) to the PEG extensions. One preferred embodiment of such a modified polymer is produced using ePTFE, maleic anhydride (MA), and penicillin (PEN) to yield PEN-PEG-MA-ePTFE, which inhibits gram-positive bacteria. The PEG spacer is critical for PEN function in this context, since PEN-ePTFE is ineffective against bacterial growth. Another preferred embodiment incorporates ampicillin (AMP) and a heterobifunctional PEG, HOOC—(CH2—CH2—O)n—NH2, to yield AMP-PEG-MA-ePTFE. This latter example inhibits both gram-negative and gram-positive bacteria.

    摘要翻译： 公开了化学修饰以延缓细菌生长的聚合物。 这样的改性聚合物（例如ePTFE和聚丙烯）通过首先通过与酸酐的反应在聚合物表面上产生酸基来制备。 然后通过酯化或其它反应如酰胺化将酸基连接到聚乙二醇（PEG）上。 优选使用至少两种不同分子量的PEG物质。 通过将抗生素（例如，β-内酰胺抗生素）连接到PEG延伸部分来完成抗微生物表面。 使用ePTFE，马来酸酐（MA）和青霉素（PEN）制备这种改性聚合物的一个优选实施方案，以产生抑制革兰氏阳性细菌的PEN-PEG-MA-ePTFE。 因为PEN-ePTFE对细菌生长无效，所以PEG间隔物在本文中对PEN功能至关重要。 另一个优选实施方案包括氨苄青霉素（AMP）和异双功能PEG，HOOC-（CH 2 -CH 2 -O）n -NH 2，以产生AMP-PEG-MA-ePTFE。 后一个实例抑制革兰氏阴性和革兰氏阳性细菌。

    Auto-positioning ultrasonic transducer system
    39.
    发明授权
    Auto-positioning ultrasonic transducer system 失效
    自动定位超声波换能器系统

    公开(公告)号：US07762118B2

    公开(公告)日：2010-07-27

    申请号：US11800424

    申请日：2007-05-04

    申请人： Randy K. Buchanan

    发明人： Randy K. Buchanan

    IPC分类号： G01F25/00

    CPC分类号： G01F1/662 ,  G01F25/0007 ,  G01N2291/02836

    摘要： An ultrasonic transducer apparatus and process for determining the optimal transducer position for flow measurement along a conduit outer surface. The apparatus includes a transmitting transducer for transmitting an ultrasonic signal, said transducer affixed to a conduit outer surface; a guide rail attached to a receiving transducer for guiding movement of a receiving transducer along the conduit outer surface, wherein the receiving transducer receives an ultrasonic signal from the transmitting transducer and sends a signal to a data acquisition system; and a motor for moving the receiving transducer along the guide rail, wherein the motor is controlled by a controller. The method includes affixing a transmitting transducer to an outer surface of a conduit; moving a receiving transducer on the conduit outer surface, wherein the receiving transducer is moved along a guide rail by a motor; transmitting an ultrasonic signal from the transmitting transducer that is received by the receiving transducer; communicating the signal received by the receiving transducer to a data acquisition and control system; and repeating the moving, transmitting, and communicating along a length of the conduit.

    摘要翻译： 一种用于确定沿管道外表面进行流量测量的最佳换能器位置的超声波换能器装置和方法。 该装置包括用于发送超声波信号的发送换能器，所述换能器固定在导管外表面上; 导轨，其附接到接收换能器，用于引导接收换能器沿着导管外表面的运动，其中接收换能器从发射换能器接收超声波信号，并将信号发送到数据采集系统; 以及用于沿着导轨移动接收换能器的马达，其中马达由控制器控制。 该方法包括将发送换能器固定到导管的外表面; 在所述导管外表面上移动接收换能器，其中所述接收换能器通过马达沿导轨移动; 从由所述接收换能器接收的所述发射换能器发送超声波信号; 将由接收换能器接收的信号传送到数据采集和控制系统; 并且沿导管的长度重复移动，传送和连通。