利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

101 条记录 (耗时 0.013 秒)

    Hydroquinonoid ortho-alkylation polymers and the process of their production
    31.
    发明授权
    Hydroquinonoid ortho-alkylation polymers and the process of their production 失效
    氢醌类邻烷基化聚合物及其生产工艺

    公开(公告)号：US3996160A

    公开(公告)日：1976-12-07

    申请号：US552017

    申请日：1975-02-24

    申请人： James A. Dale ,  Patricia C. Wang

    发明人： James A. Dale ,  Patricia C. Wang

    IPC分类号： C08G61/00 ,  A23L3/3463 ,  C08G61/02 ,  C08L7/00 ,  C08L21/00 ,  C08L65/00 ,  C08L101/00 ,  C09K15/08 ,  C08F12/24

    CPC分类号： C08G61/02 ,  A23L3/3463 ,  C08L101/00 ,  C09K15/08 ,  C08G2261/3424

    摘要： Hydroquinonoid polymers having n recurring units of the General Structural Formula ##STR1## wherein n is 3 or greater, X and X' independently are hydrogen or methyl, R is a lower hydrocarbon, and R' and R" independently are lower hydrocarbons or hydrogens are disclosed as well as such polymers additionally containing phenolic copolymerizates. The preparation of these polymers by the one step copolymerization of a diolefinic hydrocarbon, a hydroquinonoid and optionally a phenolic, in the presence of an ortho-alkylation catalyst, and the use of these polymers as antioxidants, especially for foodstuffs, is also disclosed.

    摘要翻译： 其中n为3或更大的具有n个通式结构式的重复单元的氢醌类聚合物，X和X'独立地是氢或甲基，R是低级烃，R'和R“独立地是低级烃或氢 以及另外含有酚醛共聚物的这种聚合物。 还公开了在邻位烷基化催化剂存在下通过二烯烃，氢醌和任选的酚进行一步共聚制备这些聚合物，以及这些聚合物作为抗氧化剂，特别是食品的用途。

    Nonabsorbable antioxidant
    32.
    发明授权
    Nonabsorbable antioxidant 失效
    不可吸收的抗氧化剂

    公开(公告)号：US3994828A

    公开(公告)日：1976-11-30

    申请号：US367971

    申请日：1973-06-07

    申请人： Alejandro Zaffaroni

    发明人： Alejandro Zaffaroni

    IPC分类号： A23L29/00 ,  A23L2/44 ,  A23L3/34 ,  A23L3/3463 ,  A23L3/349 ,  A23L27/60 ,  C08K9/00 ,  C11B5/00 ,  C09K15/08

    CPC分类号： A23L3/3463 ,  C08K9/00

    摘要： Novel, nonabsorbable antioxidants of the general formula (An).sub.n R wherein An is a means for preventing oxidation of an oxidizable material, R is a means for essentially restricting the absorption of An in a biological environment, .about. is a means for covalently bonding An to R for a prolonged time, and n is at least one. The nonabsorbable antioxidants are useful as stabilizers in oxidizable materials without any substantial absorption of the antioxidant in the biological environment.

    摘要翻译： 通式（An）n R的新型非吸收性抗氧化剂其中An是防止可氧化材料氧化的手段，R是用于基本上限制An在生物环境中的吸收的手段，差异是共价键合的手段 到R长时间，n是至少一个。 不可吸收的抗氧化剂可用作可氧化材料中的稳定剂，而在生物环境中没有任何明显的抗氧化剂吸收。

    Polymeric active methylene compounds
    38.
    发明授权
    Polymeric active methylene compounds 失效
    聚合活性亚甲基化合物

    公开(公告)号：US4489197A

    公开(公告)日：1984-12-18

    申请号：US580758

    申请日：1984-02-17

    申请人： Patricia C. Wang ,  Daniel J. Dawson

    发明人： Patricia C. Wang ,  Daniel J. Dawson

    IPC分类号： C08F8/30

    CPC分类号： C08F8/30 ,  Y10S526/916

    摘要： Polymeric compounds which have recurring ##STR1## units, wherein X is N or O, R.sub.1, R.sub.2 and R.sub.3 are hydrogens or lower alkyls and R.sub.4 is ##STR2## and aromatic amine or an aromatic hydrazine which provides X as N. These polymers provide active methylene groups which serve as points of attachment for organic groups-particularly azo functionality-containing groups. These azo links can be cleaved by bacteria in the mammalian lower bowel, thereby releasing the corresponding amino groups. This mechanism can effect programmed delivery of pharmaceutically desirable species to the lower bowel.

    摘要翻译： 具有重复单元的聚合化合物，其中X是N或O，R 1，R 2和R 3是氢或低级烷基，R 4是芳族胺或提供X作为N的芳香族肼。这些聚合物提供活性 用作有机基团 - 特别是含偶氮官能团的基团的连接点的亚甲基。 这些偶氮链可以被哺乳动物下肠中的细菌切割，从而释放相应的氨基。 这种机制可以将药学上期望的物质的程序递送到下肠。