Process for rigid foams of improved friability
    4.
    发明授权
    Process for rigid foams of improved friability 失效
    具有改善脆性的刚性泡沫的方法

    公开(公告)号:US4293658A

    公开(公告)日:1981-10-06

    申请号:US148634

    申请日:1980-05-12

    摘要: Polyurethanes based on a resole-type polyol can be significantly improved in their friability when the urethane catalyst is a fully neutralized tertiary amine salt and butyl benzyl phthalate is used as the plasticizer.The polyol is prepared by reacting a phenol and formaldehyde under substantially anhydrous conditions with continuous removal of water, and has a water content of no more than about 5%.

    摘要翻译: 当氨基甲酸酯催化剂是完全中和的叔胺盐时,基于酚醛型多元醇的聚氨酯的脆性可以显着提高,并且使用邻苯二甲酸丁基苄酯作为增塑剂。 通过使苯酚和甲醛在基本上无水条件下反应并连续除去水而制备多元醇,其含水量不超过约5%。

    Immunoassay for opiate alkaloids and their metabolites; tracers,
immunogens and antibodies
    9.
    发明授权
    Immunoassay for opiate alkaloids and their metabolites; tracers, immunogens and antibodies 失效
    鸦片生物碱及其代谢物的免疫测定; 示踪剂,免疫原和抗体

    公开(公告)号:US4939264A

    公开(公告)日:1990-07-03

    申请号:US885054

    申请日:1986-07-14

    摘要: The present invention is directed to a fluorescence polarization assay for opiate alkaloids and their metabolites, to the various components needed for preparing and carrying out such an assay and to methods of making these components. Specifically, tracers, immunogens and antibodies are disclosed, as well as methods for making them. The tracers and the immunogens are made from substituted opiate alkaloids. A fluorescein moiety is included in the tracers, while a poly(amino acid) forms a part of the immunogens. The assay is conducted by measuring the degree of polarization retention of the fluorescence resulting when a sample mixed with antiserum and tracer is irradiated with plane-polarized light.

    摘要翻译: 本发明涉及鸦片类生物碱及其代谢产物的荧光偏振测定,制备和进行这种测定所需的各种组分以及制备这些组分的方法。 具体地,公开了示踪剂,免疫原和抗体,以及制备它们的方法。 示踪剂和免疫原由取代的阿片碱生物碱制成。 示踪剂中包含荧光素部分,而聚(氨基酸)形成免疫原的一部分。 通过测量当用平面偏振光照射与抗血清和示踪剂混合的样品时产生的荧光的偏振保持程度来进行测定。

    Catalyst system and process for the production of polyurethanes
    10.
    发明授权
    Catalyst system and process for the production of polyurethanes 失效
    用于生产聚氨酯的催化剂体系和方法

    公开(公告)号:US4500654A

    公开(公告)日:1985-02-19

    申请号:US547691

    申请日:1983-11-01

    CPC分类号: C08G18/2027

    摘要: A catalyst and process are provided for producing polyurethanes by contacting an organic polyol and an organic isocyanate with a catalyst comprising an N-substituted alkoxyalkyl piperazine and preferably additionally comprising an N-alkoxyalkyl morpholine wherein the alkylene moieties of the morpholine and piperazine are independently selected from the group consisting of C.sub.1 to about C.sub.5 alkylene moieties, and wherein the alkoxy moieties are independently selected from the group consisting of C.sub.1 to about C.sub.3 alkoxy moieties.

    摘要翻译: 提供催化剂和方法用于通过使有机多元醇和有机异氰酸酯与包含N-取代的烷氧基烷基哌嗪的催化剂接触并优选另外包含N-烷氧基烷基吗啉来制备聚氨酯,其中吗啉和哌嗪的亚烷基部分独立地选自 由C1至C5亚烷基部分组成的基团,其中烷氧基部分独立地选自C1至C3烷氧基部分。