利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

15 条记录 (耗时 0.018 秒)

    Polymeric N-substituted maleimide antioxidants
    4.
    发明授权
    Polymeric N-substituted maleimide antioxidants 失效
    聚合N-取代的马来酰亚胺抗氧化剂

    公开(公告)号：US4205151A

    公开(公告)日：1980-05-27

    申请号：US821163

    申请日：1977-08-02

    申请人： James A. Dale ,  Steve Y. W. Ng

    发明人： James A. Dale ,  Steve Y. W. Ng

    IPC分类号： A23L3/3526 ,  C08F22/40 ,  C11B5/00 ,  C08F122/40 ,  C08F4/04 ,  C08F222/40

    CPC分类号： A23L3/3526 ,  C08F22/40 ,  C11B5/0057

    摘要： N-substituted maleimide polymers comprising the recurring structural units: ##STR1## wherein R and R' independently are lower alkyl groups of from 1 to 5 carbon atoms and n is an integer of from about 2 to about 2,000, are disclosed. Their preparation as well as the preparation of their monomer precursors and the preferred use of the polymers as antioxidants, particularly nonabsorbable food antioxidants, are also disclosed.

    摘要翻译： 包含重复结构单元的N-取代的马来酰亚胺聚合物：其中R和R'独立地为1至5个碳原子的低级烷基且n为约2至约2,000的整数。 还公开了它们的制备以及其单体前体的制备和聚合物作为抗氧化剂，特别是不可吸收的食品抗氧化剂的优选用途。

    Polymeric N-substituted maleimide antioxidants
    5.
    发明授权
    Polymeric N-substituted maleimide antioxidants 失效
    聚合N-取代的马来酰亚胺抗氧化剂

    公开(公告)号：US4078091A

    公开(公告)日：1978-03-07

    申请号：US642038

    申请日：1975-12-18

    申请人： James A. Dale ,  Steve Y. W. Ng

    发明人： James A. Dale ,  Steve Y. W. Ng

    IPC分类号： C11B5/00 ,  A23D5/04

    CPC分类号： C11B5/0057

    摘要： N-substituted maleimide polymers comprising the recurring structural units: ##STR1## wherein R and R' independently are lower alkyl groups of from 1 to 5 carbon atoms and n is an integer of from about 2 to about 2,000, are disclosed. Their preparation as well as the preparation of their monomer precursors and the preferred use of the polymers as antioxidants, particularly nonabsorbable food antioxidants, are also disclosed.

    摘要翻译： 包含重复结构单元的N-取代的马来酰亚胺聚合物：其中R和R'独立地为1至5个碳原子的低级烷基且n为约2至约2,000的整数。 还公开了它们的制备以及其单体前体的制备和聚合物作为抗氧化剂，特别是不可吸收的食品抗氧化剂的优选用途。

    One step preparation of linear antioxidant phenolic polymers involving use of impure diolefin feedstock and aluminum catalyst under ortho alkylation conditions
    8.
    发明授权
    One step preparation of linear antioxidant phenolic polymers involving use of impure diolefin feedstock and aluminum catalyst under ortho alkylation conditions 失效
    线性抗氧化酚类聚合物的一步法制备，涉及在正烷基化条件下使用不纯的二烯烃原料和铝催化剂

    公开(公告)号：US3996198A

    公开(公告)日：1976-12-07

    申请号：US552059

    申请日：1975-02-24

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

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

    IPC分类号： A23L3/3463 ,  C08G61/02 ,  C08G83/00 ,  C08L101/00 ,  C08G65/40 ,  C08F4/52

    CPC分类号： C08G83/00 ,  A23L3/3463 ,  C08G61/02 ,  C08L101/00 ,  C08G2261/3424

    摘要： Phenolic polymers having 3 to 1000 repeating units of the general structural formula ##STR1## wherein X and X.sup.1 independently are hydrogens or methyls, R is a lower alkyl of from 1 to 6 carbon atoms or an aryl, alkaryl or aralkyl of from 6 to 14 carbon atoms, and R.sup.1, R.sup.2 and R.sup.3 independently are hydrogen, lower alkyls of from 1 to 6 carbon atoms, aralkyls of from 8 to 14 carbons, or alkoxys or aralkyloxys of from 1 to about 14 carbons, are prepared in one step by contacting an R.sup.1, R.sup.2 and R.sup.3 -containing phenol having two hydrogens ortho to the hydroxyl group with a low purity diolefinic hydrocarbon under ortho-alkylation conditions in the presence of an effective amount of an ortho-alkylation catalyst. These materials find use as antioxidants, especially for edibles, where their polymeric nature offers advantages.

    摘要翻译： 具有3〜1000个通式结构式的重复单元的酚醛聚合物，其中X和X1独立地是氢或甲基，R是1至6个碳原子的低级烷基或6-14的芳基，烷芳基或芳烷基 碳原子，R 1，R 2和R 3各自独立地为氢，1至6个碳原子的低级烷基，8至14个碳的芳烷基或1至约14个碳原子的烷氧基或芳烷氧基， 在有效量的邻位烷基化催化剂的存在下，在正烷基化条件下，在邻位羟基的两个氢和低纯度二烯烃的R1，R2和R3的苯酚。 这些材料可用作抗氧化剂，特别是用于食品，其聚合物性质具有优势。

    Controlled catalysis
    10.
    发明授权
    Controlled catalysis 有权
    受控催化

    公开(公告)号：US08729295B2

    公开(公告)日：2014-05-20

    申请号：US12258123

    申请日：2008-10-24

    申请人： James A. Dale ,  Luc Froment ,  Satish Bapat

    发明人： James A. Dale ,  Luc Froment ,  Satish Bapat

    IPC分类号： C07C67/04

    CPC分类号： B01J31/10 ,  B01J2231/49

    摘要： The present invention provides methods of using a novel sulfonated resin catalyst, showing improved performance. The catalyst has reduced or partial functionalization, throughout the sulfonated region of the polymer, leading to reduced by-product formation and other desirable features. This catalyst has particular usefulness in reactions or processes sensitive to high acidity, e.g., esterification-transesterification.

    摘要翻译： 本发明提供使用新型磺化树脂催化剂的方法，显示出改进的性能。 催化剂在聚合物的整个磺化区域内具有还原或部分官能化，导致副产物形成减少和其它所需特征。 该催化剂对于高酸度（例如酯化 - 酯交换）敏感的反应或方法具有特别的用途。