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23 条记录 (耗时 0.021 秒)

    Biologically-active compounds comprising a biologically-active anionic portion and a water-insoluble, inorganic cationic portion
    2.
    发明授权
    Biologically-active compounds comprising a biologically-active anionic portion and a water-insoluble, inorganic cationic portion 失效
    包含生物活性阴离子部分和水不溶性无机阳离子部分的生物活性化合物

    公开(公告)号：US5145674A

    公开(公告)日：1992-09-08

    申请号：US693838

    申请日：1991-04-30

    申请人： George A. Lane ,  Harold E. Rossow

    发明人： George A. Lane ,  Harold E. Rossow

    IPC分类号： A61K31/28 ,  A61K31/375 ,  A61K31/60 ,  C07C57/30 ,  C07C59/42 ,  C07C59/70 ,  C07F5/06 ,  C07F7/00

    CPC分类号： A61K31/60 ,  A61K31/28 ,  A61K31/375 ,  C07C57/30 ,  C07C59/42 ,  C07C59/70 ,  C07F5/069 ,  C07F7/006

    摘要： A biologically-active compound which includes an inorganic mixed metal cationic portion having anion exchange properties and an anionic portion containing a biologically-active anion. The mixed metal cationic portion can be an oxide, hydroxide, or both, and can be fully hydrated, partially hydrated, or not hydrated. The biologically-active anion can be, e.g., an antibiotic, an analgesic, an antimicrobial, a pharmaceutical, an antioxidant, or an agricultural chemical such as a herbicide or a pesticide. These biologically-active compounds can have controlled-release properties and can be produced by relatively simple processes, using for the cationic portion relatively common starting materials. These biologically-active compounds are useful, for example, in compositions to form pharmaceuticals, antioxidants, or herbicides, and can be incorporated into a polymeric material to form a shaped body, such as a plastic film which can be utilized to form bags for food storage or transportation. Also included are processes for making the biologically-active compounds.

    摘要翻译： 一种生物活性化合物，其包括具有阴离子交换性质的无机混合金属阳离子部分和含有生物活性阴离子的阴离子部分。 混合金属阳离子部分可以是氧化物，氢氧化物或两者，并且可以完全水合，部分水合或不水合。 生物活性阴离子可以是例如抗生素，止痛剂，抗微生物剂，药物，抗氧化剂或农药如除草剂或农药。 这些生物活性化合物可以具有控制释放性质，并且可以通过相对简单的方法制备，使用阳离子部分相对常见的起始材料。 这些生物活性化合物可用于例如形成药物，抗氧化剂或除草剂的组合物中，并且可以并入聚合物材料中以形成成型体，例如可用于形成食品袋的塑料膜 存储或运输。 还包括制备生物活性化合物的方法。

    Sintered self-reinforced silicon nitride
    3.
    发明授权
    Sintered self-reinforced silicon nitride 失效
    烧结自增强氮化硅

    公开(公告)号：US5312785A

    公开(公告)日：1994-05-17

    申请号：US63587

    申请日：1993-05-18

    申请人： Aleksander J. Pyzik ,  Harold E. Rossow

    发明人： Aleksander J. Pyzik ,  Harold E. Rossow

    IPC分类号： C04B35/81 ,  C04B35/584 ,  C04B35/593 ,  C04B35/80 ,  C04B35/58

    CPC分类号： C04B35/806 ,  C04B35/584 ,  C04B35/5935

    摘要： A dense, self-reinforced silicon nitride ceramic body and a method of making such body. The body has a composition that includes: (a) silicon nitride; (b) a glassy grain boundary phase containing oxygen, nitrogen, magnesium, yttrium, silicon, zirconium, and at least one of titanium and aluminum; and (c) a second crystalline phase containing zirconium oxide; and (d) crystalline phases of metal zirconium silicide and/or metal zirconium silicon nitride. The ceramic exhibits high fracture toughness and high fracture strength and has a density at least 98 percent of theoretical.

    摘要翻译： 一种致密的自增强氮化硅陶瓷体及其制造方法。 身体的组成包括：（a）氮化硅; （b）含有氧，氮，镁，钇，硅，锆和钛和铝中的至少一种的玻璃态晶界相; 和（c）含有氧化锆的第二结晶相; 和（d）金属硅化锆和/或金属氮化硅锆的结晶相。 该陶瓷具有高断裂韧性和高断裂强度，其密度至少为理论值的98％。

    Hydrated Mg(NO.sub.3).sub.2 reversible phase change compositions
    5.
    发明授权
    Hydrated Mg(NO.sub.3).sub.2 reversible phase change compositions 失效
    水合Mg（NO3）2可逆相变组成

    公开(公告)号：US4273666A

    公开(公告)日：1981-06-16

    申请号：US90784

    申请日：1979-11-02

    申请人： George A. Lane ,  Harold E. Rossow

    发明人： George A. Lane ,  Harold E. Rossow

    IPC分类号： C09K5/06

    CPC分类号： C09K5/063 ,  Y10S165/902

    摘要： A reversible liquid solid phase change composition comprising hydrated Mg(NO.sub.3).sub.2 and one of the group of Sr(OH).sub.2, SrCO.sub.3, Ba(OH).sub.2, BaO, BaCO.sub.3 and/or NaBO.sub.2 added to the composition in an effective amount to suppress supercooling of the MgNO.sub.3 liquid phase.

    摘要翻译： 一种可逆液体固相变组合物，其包含水合Mg（NO 3）2和Sr（OH）2，SrCO 3，Ba（OH）2，BaO，BaCO 3和/或NaBO 2中的一种以有效量加入到组合物中 抑制MgNO3液相的过冷。

    Self-reinforced silicon nitride ceramic of high fracture toughness
    8.
    发明授权
    Self-reinforced silicon nitride ceramic of high fracture toughness 失效
    自增强氮化硅陶瓷具有高断裂韧性

    公开(公告)号：US5160508A

    公开(公告)日：1992-11-03

    申请号：US826315

    申请日：1992-01-24

    申请人： Aleksander J. Pyzik ,  Harold E. Rossow ,  Douglas B. Schwarz ,  Donald R. Beaman ,  Barbara M. Pyzik ,  William J. Dubensky

    发明人： Aleksander J. Pyzik ,  Harold E. Rossow ,  Douglas B. Schwarz ,  Donald R. Beaman ,  Barbara M. Pyzik ,  William J. Dubensky

    IPC分类号： C04B35/593 ,  C04B35/645 ,  C04B35/80

    CPC分类号： C04B35/593 ,  C04B35/645 ,  C04B35/806

    摘要： A process for preparing a self-reinforced silicon nitride ceramic body of high fracture toughness comprising hot-pressing a powder mixture containing silicon nitride, a densification aid such as sodium oxide, a conversion aid such as lanthanum oxide and a compound, such as gallium oxide, which enhances growth of .beta.-silicon nitride whiskers-under conditions such that densification and the in situ formation of .beta.-silicon nitride whiskers having a high aspect ratio occur. A novel silicon nitride ceramic of high fracture toughness and high fracture strength is disclosed comprising a .beta.-silicon nitride crystalline phase wherein at least about 20 volume percent of the phase is in the form of whiskers having an average aspect ratio of at least about 2.5; a glassy second phase containing the densificaton aid, the conversion aid, the compound which enhances growth of .beta.-silicon nitride whiskers, and an amount of silica; and not greater than about 10 weight percent of the total weight as other phases. The glassy phase may also include a minor amount, e.g., up to 5.0 weight percent, based upon total weight of the ceramic, of aluminum nitride or boron nitride. The glassy phase optionally includes an amount of a secondary reinforcing material such as silicon carbide whiskers.

    摘要翻译： 一种制备高断裂韧性的自增强氮化硅陶瓷体的方法，包括热压含有氮化硅的粉末混合物，致密化助剂例如氧化钠，转化助剂如氧化镧和化合物如氧化镓 ，其增强了β-硅氮化物晶须的生长 - 在使得具有高纵横比的β-硅氮化物晶须的致密化和原位形成的条件下。 公开了一种具有高断裂韧性和高断裂强度的新型氮化硅陶瓷，其包括β-氮化硅结晶相，其中该相的至少约20体积百分数为晶须的形式，其平均纵横比为至少约2.5; 含有致密助剂的玻璃质第二相，转化助剂，增强β-硅氮化物晶须生长的化合物和一定量的二氧化硅; 并且不大于作为其它相的总重量的约10重量％。 玻璃相还可以包括少量，例如，基于陶瓷的总重量，至多5.0重量％的氮化铝或氮化硼。 玻璃相任选地包括一定量的第二增强材料，例如碳化硅晶须。

    Method of preparing a self-reinforced silicon nitride ceramic of high fracture toughness
    9.
    发明授权
    Method of preparing a self-reinforced silicon nitride ceramic of high fracture toughness 失效
    制备高断裂韧性的自增强氮化硅陶瓷的方法

    公开(公告)号：US5021372A

    公开(公告)日：1991-06-04

    申请号：US398801

    申请日：1989-08-25

    申请人： Aleksander J. Pyzik ,  Douglas B. Schwarz ,  Harold E. Rossow ,  Donald R. Beaman ,  Barbara M. Pyzik ,  William J. Dubensky

    发明人： Aleksander J. Pyzik ,  Douglas B. Schwarz ,  Harold E. Rossow ,  Donald R. Beaman ,  Barbara M. Pyzik ,  William J. Dubensky

    IPC分类号： C04B35/593 ,  C04B35/645 ,  C04B35/80

    CPC分类号： C04B35/645 ,  C04B35/593 ,  C04B35/806

    摘要： A process for preparing a self-reinforced silicon nitride ceramic body of high fracture toughness comprising hot-pressing a powder mixture containing silicon nitride, a densification aid such as sodium oxide, a conversion aid such as lanthanum oxide and a compound, such as gallium oxide, which enhances growth of .beta.-silicon nitride whiskers-under conditions such that densification and the in situ formation of .beta.-silicon nitride whiskers having a high aspect ratio occur. A novel silicon nitride ceramic of high fracture toughness and high fracture strength is disclosed comprising a .beta.-silicon nitride crystalline phase wherein at least about 20 volume percent of the phase is in the form of whiskers having an average aspect ratio of at least about 2.5; a glassy second phase containing the densification aid, the conversion aid, the compound which enhances growth of .beta.-silicon nitride whiskers, and an amount of silica; and not greater than about 10 weight percent of the total weight as other phases. The glassy phase may also include a minor amount, e.g., up to 5.0 weight percent, based upon total weight of the ceramic, of aluminum nitride or boron nitride.

    摘要翻译： 一种制备高断裂韧性的自增强氮化硅陶瓷体的方法，包括热压含有氮化硅的粉末混合物，致密化助剂例如氧化钠，转化助剂如氧化镧和化合物如氧化镓 ，其增强了β-硅氮化物晶须的生长 - 在使得具有高纵横比的β-硅氮化物晶须的致密化和原位形成的条件下。 公开了一种具有高断裂韧性和高断裂强度的新型氮化硅陶瓷，其包括β-氮化硅结晶相，其中该相的至少约20体积百分数为晶须的形式，其平均纵横比为至少约2.5; 含有致密化助剂的玻璃质第二相，转化助剂，增强β-硅氮化物晶须生长的化合物和一定量的二氧化硅; 并且不大于作为其它相的总重量的约10重量％。 玻璃相还可以包括少量，例如，基于陶瓷的总重量，至多5.0重量％的氮化铝或氮化硼。

    Reversible phase change composition for storing energy
    10.
    发明授权
    Reversible phase change composition for storing energy 失效
    用于存储能量的可逆相变组合物

    公开(公告)号：US4637888A

    公开(公告)日：1987-01-20

    申请号：US743237

    申请日：1985-06-11

    申请人： George A. Lane ,  Harold E. Rossow

    发明人： George A. Lane ,  Harold E. Rossow

    IPC分类号： C09K5/06

    CPC分类号： C09K5/063

    摘要： A reversible liquid/solid phase change composition for the storage of energy comprising a mixture of hydrated calcium bromide/calcium chloride and a modifier selected from KBr, KCl, or mixtures thereof, for modifying the semicongruent melting of the mixture to reduce the formation of crystalline CaBr.sub.2 and CaCl.sub.2 hydrate phases other than the hexahydrate phase. The composition is useful over a temperature range of from about 5.degree. to about 50.degree. C. and can be employed for the storage of coolness or heat, or as a buffer or heat sink to modulate diurnal swings in ambient temperature.

    摘要翻译： 用于储存能量的可逆液体/固相组合物，其包含水合的溴化钙/氯化钙和选自KBr，KCl或其混合物的改性剂的混合物，用于改变混合物的半成品熔融以减少晶体的形成 CaBr2和CaCl2水合物相，而不是六水相。 该组合物在约5℃至约50℃的温度范围内是有用的，并且可用于存储冷却或加热，或用作缓冲液或散热器以调节环境温度下的日间波动。