Composition for absorption refrigeration
    1.
    发明授权
    Composition for absorption refrigeration 失效
    吸收制冷组合物

    公开(公告)号:US4557850A

    公开(公告)日:1985-12-10

    申请号:US367034

    申请日:1982-04-07

    IPC分类号: C09K5/04

    CPC分类号: C09K5/047

    摘要: A composition for absorption refrigeration which comprises a fluorinated hydrocarbon refrigerant, an amide or glycol ether solvent serving as an absorption liquid, and a phosphite stabilizer. The stabilizer is used in an amount of 0.05 to 0.5 wt % of the absorption liquid calculated as phosphorus, within which range the phosphite stabilizer can suitably protect the refrigerant and the absorption liquid from deteriorating and decomposing at high operation temperatures.

    摘要翻译: 一种用于吸收制冷的组合物,其包含氟化烃制冷剂,用作吸收液体的酰胺或二醇醚溶剂和亚磷酸酯稳定剂。 稳定剂的使用量为以磷计算的吸收液的0.05〜0.5重量%,在该范围内,亚磷酸酯稳定剂可以适当地保护制冷剂和吸收液体在高操作温度下不劣化和分解。

    Photochromic material
    2.
    发明授权
    Photochromic material 失效
    光致变色材料

    公开(公告)号:US5426018A

    公开(公告)日:1995-06-20

    申请号:US152952

    申请日:1993-11-15

    摘要: The present invention provides a novel photochromic material which is capable of forming two kinds of aggregates, each having a sharp absorption peak at a different wavelength. The photochromic material comprises a spiropyran compound represented by the following general formula: ##STR1## wherein R.sup.1 and R.sup.2 are independently alkyl groups each containing 1 to 30 carbon atoms, and R.sup.3, R.sup.4, R.sup.5, and R.sup.6 are independently selected from the group consisting of hydrogen, an amino group, an alkoxy group with 1 to 5 carbon atoms, and an alkylamino group with 1 to 5 carbon atoms with the proviso that at least one of R.sup.3, R.sup.4, R.sup.5, and R.sup.6 is an amino group, an alkoxy group or an alkylamino group.

    摘要翻译: 本发明提供一种新型光致变色材料,其能够形成两种聚集体,每种聚集体在不同波长处具有尖锐的吸收峰。 光致变色材料包括由以下通式表示的螺吡喃化合物:其中R 1和R 2各自独立地为含有1至30个碳原子的烷基,R 3,R 4,R 5和R 6独立地选自 氢,氨基,具有1至5个碳原子的烷氧基和具有1至5个碳原子的烷基氨基,条件是R 3,R 4,R 5和R 6中的至少一个是氨基,烷氧基 或烷基氨基。