利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

36 条记录 (耗时 0.036 秒)

    Polyurethane foams manufactured with mixed gas/liquid blowing agents
    21.
    发明公开
    Polyurethane foams manufactured with mixed gas/liquid blowing agents 失效
    用混合气体/液体发泡剂制造的聚氨酯泡沫

    公开(公告)号：EP0400443A3

    公开(公告)日：1991-03-20

    申请号：EP90109609.9

    申请日：1990-05-21

    申请人： THE DOW CHEMICAL COMPANY (a Delaware corporation)

    发明人： Lin, Chung-Yuan

    IPC分类号： C08J9/14

    CPC分类号： C08J9/144 ,  C08J9/143 ,  C08J2375/04

    摘要： Disclosed are mixed halocarbon blowing agents comprising (1) halocarbons boiling below 10°C, (2) halocarbons boiling between 20°C and 35°C, and (3) inert organic liquids having a boiling point of from 35°C to 125°C. Also disclosed are blends of the above mixed blowing agents with active hydrogen-containing com­pounds, particularly polyols and the rigid closed cell foams prepared from such blends. Up to 60 percent reduction in hard halocarbons is realized with the mixed blowing agents.

    Probe for photoacoustic analysis
    25.
    发明公开
    Probe for photoacoustic analysis 失效
    分析。

    公开(公告)号：EP0478410A1

    公开(公告)日：1992-04-01

    申请号：EP91402400.5

    申请日：1991-09-10

    申请人： THE DOW CHEMICAL COMPANY (a Delaware corporation)

    发明人： Leugers, Mary Anne ,  Mills, Michael Edward

    IPC分类号： G01N21/17

    CPC分类号： G01N29/2425 ,  G01N21/1702 ,  G01N21/8507 ,  G01N2021/1708 ,  G01N2021/1793 ,  G01N2291/02809 ,  Y10T436/25

    摘要： A probe (15) for quantitative detection of the concentration of an analyte in a sample (12) includes a hollow elongated body (14) adapted for single ended contact with the sample. The body (14) has at least one optical fiber extended through the body (14) for transmitting modulated light (26) through the body (14), out a window at the forward end of the body (14), and along an optical axis (25) into the sample (12) to optically excite the analyte. A pressure transducer (34) mounted beyond the window and spaced laterally away from the optical axis (25) detects an acoustic response of the analyte to the modulated light. This probe is particularly suitable for performing remote photoacoustic analysis of analyte concentration in a sample.

    摘要翻译： 用于定量检测样品（12）中分析物浓度的探针（15）包括适于与样品单端接触的中空细长体（14）。 主体（14）具有延伸穿过主体（14）的至少一根光纤，用于将主体（14）的调制光（26）从主体（14）的前端的窗口传出，并沿着光学 （25）进入样品（12）以光学激发分析物。 安装在窗外并且横向偏离光轴（25）的压力传感器（34）检测分析物对调制光的声响应。 该探针特别适用于对样品中分析物浓度进行远程光声分析。

    DETERMINING BIODEGRADABILITY OF IMINODIACETIC ACID DERIVATIVES, DEGRADABLE CHELANTS, USES AND COMPOSITIONS THEREOF
    27.
    发明公开
    DETERMINING BIODEGRADABILITY OF IMINODIACETIC ACID DERIVATIVES, DEGRADABLE CHELANTS, USES AND COMPOSITIONS THEREOF 失效
    生物降解性亚氨基二乙酸衍生物，生物降解的螯合剂及其用途和组合物的测定THEREFORE

    公开(公告)号：EP0772770A1

    公开(公告)日：1997-05-14

    申请号：EP95927139.0

    申请日：1995-07-14

    申请人： THE DOW CHEMICAL COMPANY (a Delaware corporation)

    发明人： STRICKLAND, Alan, D.

    IPC分类号： B01J31 ,  B08B3 ,  C02F5 ,  C12S99 ,  G01N33 ,  G06F17 ,  G06F19

    CPC分类号： G01N33/48 ,  G06F19/16

    摘要： Chelants represented by formula (Ib) are determined to be biodegradable when Distance A is from 3.8 x 10-10 to 4.6 x 10-10 m, Distance B is from 5.1 x 10-10 to 5.9 x 10-10 m, and Distance C is from 4.3 to 6.7 x 10-10 m. Compounds meeting these criteria are referred to as compounds of Formula (2). In addition to methods of analysis and computer systems therefor, the invention includes a method of chelating a metal ion to form a chelate and biodegrading the chelate comprising step (a) contacting the metal ion with at least one compound of Formula (2) to form a chelate and (b) contacting the resultant chelate or chelant with microbes of the type specified in ASTM 2667-89, ISO 5815 or effective enzymes thereof under conditions and for a time sufficient for biodegradation wherein either (i) the chelate formed in step (a) is formed in a process of removing deposits, scale, or rust; cleaning or washing; controlling metal initiated or catalyzed oxidation or deterioration including spoilage, discoloration, or rancidification; textile treatment; paper making; stabilization of polymers or phosphates; or petroleum drilling, production or recovery; or (ii) the chelate formed in step (a) is before step (b) used as a redox catalyst, in a process of photographic bleaching, bleach-fixing or developing; in electroless deposition or plating; in removing acid or oxide gases including H¿2?S, NOx, SOx, CO and CO2; or in providing agricultural nutrients.

    METHOD FOR AQUEOUS PROCESSING OF ALUMINUM NITRIDE AND COMPOSITIONS THEREFROM
    29.
    发明授权
    METHOD FOR AQUEOUS PROCESSING OF ALUMINUM NITRIDE AND COMPOSITIONS THEREFROM 失效
    PROCESS FOR处理水溶液氮化铝和产生的组合物

    公开(公告)号：EP0636108B1

    公开(公告)日：1996-11-13

    申请号：EP93911626.5

    申请日：1993-04-12

    申请人： THE DOW CHEMICAL COMPANY (a Delaware corporation)

    发明人： HOWARD, Kevin, E.

    IPC分类号： C01B21/072 ,  C04B35/58 ,  H01L21/48

    CPC分类号： B01J13/0034 ,  B01J13/0008 ,  C01B21/0728

    摘要： A method of processing aluminum nitride powder in water such that the aluminum nitride exhibits a reduced tendency for hydrolysis comprises forming an aqueous admixture. The admixture includes (a) a liquid medium containing water, (b) aluminum nitride powder, and (c) a combination of buffering agents that includes a weak acid and a conjugate base of the weak acid and controls pH of the water within a range of from » 5.5 to « 7.0. The combination of buffering agents is employed at a lower weight percent concentration than that of the aluminum nitride powder. The combination of buffering agents and the liquid medium suitably form a solution into which the aluminum nitride powder is admixed. The resultant powder is also disclosed.