知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

10 条记录 (耗时 0.03 秒)

    Process for the recovery of organic acids from aqueous solutions
    5.
    发明授权
    Process for the recovery of organic acids from aqueous solutions 失效
    从水溶液中回收有机酸的方法

    公开(公告)号：US06670505B1

    公开(公告)日：2003-12-30

    申请号：US09519936

    申请日：2000-03-07

    申请人： Nick Allen Collins ,  Mark Robert Shelton ,  George William Tindall ,  Steven Thomas Perri ,  Ruairi Seosamh O'Meadhra ,  Chester Wayne Sink ,  Bhaskar Krishna Arumugam ,  John Clark Hubbs

    发明人： Nick Allen Collins ,  Mark Robert Shelton ,  George William Tindall ,  Steven Thomas Perri ,  Ruairi Seosamh O'Meadhra ,  Chester Wayne Sink ,  Bhaskar Krishna Arumugam ,  John Clark Hubbs

    IPC分类号： C07C5142

    CPC分类号： C07C51/43 ,  Y02P20/582 ,  Y10S435/803 ,  Y10S435/876 ,  Y10S435/896 ,  C07C59/347

    摘要： A process for recovering a desired organic acid from a solution includes the steps of: providing an aqueous solution including at least one desired organic acid or its acid anion; adjusting the proton concentration in the aqueous solution to a desired level, with the desired proton concentration being selected, at least in part, by the amount of available protons needed to associate with the acid anions of the desired organic acid(s) to be recovered and/or acid anions that are weaker than the desired organic acids; and recovering at least a portion of the at least one desired organic acid from the aqueous phase. The desired proton concentration can be based on the amount of available protons being greater than, less than or substantially equal, to the amount of protons needed to associate with the anion of the desired organic acid(s) and acid anions that are weaker than the desired organic acid(s). Specific examples of suitable organic acids include, but are not limited to, ascorbic, succinic, tartaric, glyconic, gulonic, citric, lactic, hialic, maleic, acetic, formic, gluconic pyruvic, propionic, butyric, itaconic acids and mixtures thereof. One embodiment of the present invention relates to the recovery of 2-keto-L-gulonic acid (KLG) from aqueous solutions such as fermentation baths.

    摘要翻译： 从溶液中回收所需有机酸的方法包括以下步骤：提供包含至少一种所需有机酸或其酸阴离子的水溶液; 将所述水溶液中的质子浓度调节到所需的水平，其中所需质子浓度至少部分地被选择与需要回收的所需有机酸的酸性阴离子缔合所需的可用质子的量 和/或弱于所需有机酸的酸性阴离子; 以及从所述水相中回收所述至少一种所需有机酸的至少一部分。 期望的质子浓度可以基于可用质子的量大于，小于或基本上等于与所需有机酸的阴离子和酸阴离子相比所需的质子的量，其弱于 合适的有机酸的具体实例包括但不限于抗坏血酸，琥珀酸，酒石酸，葡萄糖酸，古洛糖酸，柠檬酸，乳酸，唾液酸，马来酸，乙酸，甲酸，葡萄糖酸，丙酸，丙酸，丁酸， 衣康酸及其混合物。 本发明的一个实施方案涉及从水溶液如发酵浴中回收2-酮-L-古洛糖酸（KLG）。

    Tobacco smoke filter material and process for the preparation thereof
    7.
    发明申请
    Tobacco smoke filter material and process for the preparation thereof 审中-公开
    烟草烟雾过滤材料及其制备方法

    公开(公告)号：US20080135059A1

    公开(公告)日：2008-06-12

    申请号：US11636255

    申请日：2006-12-08

    申请人： Ted Calvin Germroth ,  Steven Anthony Wilson ,  Thauming Kuo ,  John Clark Hubbs

    发明人： Ted Calvin Germroth ,  Steven Anthony Wilson ,  Thauming Kuo ,  John Clark Hubbs

    IPC分类号： A24D1/04 ,  A24D3/06 ,  A24D3/02

    CPC分类号： B01J20/26 ,  A24D3/08 ,  A24D3/10 ,  A24D3/14

    摘要： Disclosed are materials and compositions effective for the selective removal of gaseous aldehydes from tobacco smoke. The materials and compositions comprise tobacco smoke filters comprising a fibrous material or fibers of a polymeric material containing covalently-bonded acetoacetoxy residues. The fibrous material or fibers are capable of reacting with and removing aldehydes present in tobacco smoke. Also disclosed are processes for the preparation of fibrous materials and fibers of a polymeric material containing covalently-bonded acetoacetoxy residues and methods for the removal of a gaseous aldehyde from tobacco smoke by contacting tobacco smoke with the aforesaid fibrous materials or fibers containing covalently-bonded acetoacetoxy residues.

    摘要翻译： 公开了对从烟草烟雾中选择性除去气态醛有效的材料和组合物。 该材料和组合物包括烟草烟雾过滤器，其包括纤维材料或含有共价键合的乙酰乙酰氧基残基的聚合材料的纤维。 纤维材料或纤维能够与烟草烟雾中存在的醛反应和除去。 还公开了制备含有共价键合的乙酰乙酸基残基的聚合材料的纤维材料和纤维的方法以及通过使烟草烟与前述纤维材料或含有共价键合的乙酰乙酰氧基的纤维接触而从烟草烟中除去气态醛的方法 残留物。

    Tobacco smoke filter and method for removal of aldehydes from tobacco smoke
    8.
    发明申请
    Tobacco smoke filter and method for removal of aldehydes from tobacco smoke 审中-公开
    烟草烟雾过滤器和从烟草中去除醛的方法

    公开(公告)号：US20080135058A1

    公开(公告)日：2008-06-12

    申请号：US11635993

    申请日：2006-12-08

    申请人： Ted Calvin Germroth ,  Steven Anthony Wilson ,  Thauming Kuo ,  John Clark Hubbs

    发明人： Ted Calvin Germroth ,  Steven Anthony Wilson ,  Thauming Kuo ,  John Clark Hubbs

    IPC分类号： A24F7/04 ,  A24D3/06

    CPC分类号： A24D3/14 ,  A24D3/08

    摘要： Disclosed are filter materials which are effective for the selective removal of gaseous aldehydes from a cigarette smoke stream. The filter materials comprise a tobacco smoke filter comprising a filter support material and an alkyl acetoacetate that is capable of reacting with and removing aldehydes present in tobacco smoke. Also disclosed are a method of removing gaseous aldehydes from tobacco smoke by contacting tobacco smoke with a filter comprising a filter support material and an alkyl acetoacetate and a smoking article such as a cigarette comprising the tobacco smoke filter described herein.

    摘要翻译： 公开了对于从香烟烟雾流中选择性除去气态醛有效的过滤材料。 过滤材料包括烟草烟雾过滤器，其包括过滤器支撑材料和乙酰乙酸烷基酯，其能够与烟草烟雾中存在的醛反应并除去其中的醛。 还公开了一种通过使烟草烟与包含过滤器支撑材料和乙酰乙酸烷基酯的过滤器以及吸烟制品（例如包含本文所述的烟草烟雾过滤器）的香烟接触而从烟草烟气中除去气态醛的方法。