中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

1827 records (took 0.028 seconds)

    Process for producing 1,3-propanediol
    101.
    发明专利
    Process for producing 1,3-propanediol 未知

    公开(公告)号：ZA200509090B

    公开(公告)日：2007-03-28

    申请号：ZA200509090

    申请日：2005-11-10

    Applicant: STALEY MFG CO A E

    Inventor： BANIEL AVRAHAM M ,  JANSEN ROBERT P ,  ASHER VITNER ,  ANTHONY BAIADA

    IPC: B01D20090101 ,  B01D11/04 ,  C02F20090101 ,  C02F1/26 ,  C07C20090101 ,  C07C29/86 ,  C12P20090101

    Abstract: Disclosed herein is a process for the recovery of 1,3-propanediol from an aqueous feed stream. The present invention involves contacting an aqueous feed stream that comprises water, 1,3-propanediol, and at least one contaminant with at least one solvent extractant to form a mixture. The mixture is separated into a first phase and a second phase. The second phase comprises a majority of the water from the aqueous feed stream. The first phase comprises solvent extractant and at least some of the 1,3-propanediol that was present in the aqueous feed stream. The first phase is removed from the separated second phase and is contacted with at least one hydrophobic solvent to form a second mixture. The second mixture is separated into a third phase and a fourth phase. The third phase comprises the majority of both the solvent extractant and the hydrophobic solvent. The fourth phase comprises 1,3-propanediol and the majority of the water of the first phase. The weight ratio in the fourth phase of 1,3-propanediol to any one contaminant present is greater than the weight ratio of 1,3-propanediol to the same contaminant in the aqueous feed stream prior to the aqueous feed stream being contacted with the solvent extractant.

    Process for producing 1, 3-propanediol
    102.
    发明专利
    Process for producing 1, 3-propanediol 未知

    公开(公告)号：AU2004238804A1

    公开(公告)日：2004-11-25

    申请号：AU2004238804

    申请日：2004-05-06

    Applicant: STALEY MFG CO A E

    Inventor： BAIADA ANTHONY ,  BANIEL AVRAHAM M ,  JANSEN ROBERT P ,  VITNER ASHER

    IPC: B01D11/04 ,  C02F1/26 ,  C07C29/86 ,  B01D11/00

    Abstract: Disclosed herein is a process for the recovery of 1,3-propanediol from an aqueous feed stream. The present invention involves contacting an aqueous feed stream that comprises water, 1,3-propanediol, and at least one contaminant with at least one solvent extractant to form a mixture. The mixture is separated into a first phase and a second phase. The second phase comprises a majority of the water from the aqueous feed stream. The first phase comprises solvent extractant and at least some of the 1,3-propanediol that was present in the aqueous feed stream. The first phase is removed from the separated second phase and is contacted with at least one hydrophobic solvent to form a second mixture. The second mixture is separated into a third phase and a fourth phase. The third phase comprises the majority of both the solvent extractant and the hydrophobic solvent. The fourth phase comprises 1,3-propanediol and the majority of the water of the first phase. The weight ratio in the fourth phase of 1,3-propanediol to any one contaminant present is greater than the weight ratio of 1,3-propanediol to the same contaminant in the aqueous feed stream prior to the aqueous feed stream being contacted with the solvent extractant.

    103.
    发明专利
    未知

    公开(公告)号：BR0208251A

    公开(公告)日：2004-03-02

    申请号：BR0208251

    申请日：2002-03-06

    Applicant: STALEY MFG CO A E

    Inventor： COCKREM MICHAEL CHARLES MILNER ,  KOVACS ISTVAN

    IPC: B01D3/36 ,  C07C51/46 ,  C07C231/24 ,  C07C235/06 ,  B01D3/10 ,  B01D3/16 ,  B01D3/38 ,  C07C51/48 ,  C07C59/06 ,  C07C59/08 ,  C07C59/10 ,  C07C69/68

    Abstract: Disclosed herein are methods for the recovery of at least one of an organic acid or an organic acid amide, such as a heat stable lactic acid or lactamide, from a feed stream which contains the organic acid and/or organic acid amide. The feed stream is mixed with at least one azeotroping agent. The azeotroping agent is a hydrocarbon capable of forming at least one heteroazeotrope with the organic acid or the organic acid amide in the feed stream. The mixture of the feed stream and the azeotroping agent is heated to produce a vapor stream. The heteroazeotrope is a component of that vapor stream. The vapor stream can be heated further to separate components or it can be condensed into a liquid stream. The liquid stream is capable of being separated into a first phase and a second phase. The first phase contains the highest concentration of the organic acid and/or the organic acid amide and the azeotroping agent is part of the second phase. The liquid stream can be further distilled or, alternatively, the two phases of the liquid stream can be separated. The first phase can be removed from the remainder of the liquid stream resulting in recovery of the organic acid and/or organic acid amide. The recovered organic acid and/or organic acid amide can be further purified and/or concentrated from the first phase.

    POLYSACCHARIDE GUM AND PROCESS FOR ITS MANUFACTURE
    105.
    发明专利
    POLYSACCHARIDE GUM AND PROCESS FOR ITS MANUFACTURE 未知

    公开(公告)号：AU2003243186A1

    公开(公告)日：2003-12-12

    申请号：AU2003243186

    申请日：2003-05-01

    Applicant: STALEY MFG CO A E

    Inventor： GADDY JAMES M ,  PATTON PENELOPE A

    IPC: C08B37/00 ,  C08B37/04 ,  C08B37/06 ,  C07B37/00 ,  C07H1/08 ,  C07B37/04 ,  C07B37/06 ,  C07H1/00 ,  C07H1/06

    Abstract: Processes are disclosed for the purification and recovery of polysaccharide gums from an aqueous solution, particularly xanthan gum from a fermentation broth. An aqueous solution of at least one polysaccharide gum is mixed with a non-solvent stream comprising water and a subprecipitant level of a non-solvent of the polysaccharide gum. The mixture is concentrated to increase the polysaccharide gum concentration, and optionally undergoes a heat treatment. Additional non-solvent is added to the concentrated mixture to precipitate the polysaccharide gum. The precipitated gum is dried after being separated from the liquid component of the mixture. The removed liquid component can be recycled to the earlier step in the process in which the polysaccharide gum solution is mixed with the non-solvent stream.

    106.
    发明专利
    未知

    公开(公告)号：ES2176667T3

    公开(公告)日：2002-12-01

    申请号：ES97901153

    申请日：1997-01-21

    Applicant: AMYLUM EUROPE NV ,  STALEY MFG CO A E

    Inventor： CAMI PIERRE ,  EYAL AHARON

    IPC: C07C227/28 ,  C07C227/40 ,  C07C229/24

    Abstract: PCT No. PCT/GB97/00177 Sec. 371 Date Oct. 7, 1998 Sec. 102(e) Date Oct. 7, 1998 PCT Filed Jan. 21, 1997 PCT Pub. No. WO97/27170 PCT Pub. Date Jul. 31, 1997An indirect acidulation process for producing glutamic acid from an aqueous feed containing a glutamate resulting from fermentation includes: a) contacting an aqueous feed stream at an elevated temperature with a weak acid cation exchanger (WACE) which is at least partially in its acid form, whereby a part of the cations in the solution is taken up by the cation exchanger and protons are introduced into the solution; b) contacting a second aqueous feed containing glutamate and cations at an elevated temperature with a strong acid cation exchanger (SACE) that is obtained from a subsequent step and carries cationic glutamate, whereby the cationic glutamate is transferred into the solution and most of the cations in the second aqueous feed are taken up by the SACE; c) crystallizing glutamic acid from the effluent of step (b); d) contacting the mother liquor of step (c) with the SACE which is at least partially in its acid form whereby cationic glutamate is bound; e) utilizing the SACE obtained in step (d) in step (b); f) regenerating the SACE from step (b) to its at least partially acid form by a solution of a strong acid and utilizing the SACE in its at least partially acid form in step (d) while forming an effluent containing an acidic solution of salts, comprising cations bound to the cation exchanger in step (b) and the anions of the strong acid; g) regenerating the WACE from step (a) to its at least partially acid form by the effluent from step (f) and utilizing the WACE in its at least partially acid form in step (a) while forming an effluent containing a solution of salts, comprising cations bound to the cation exchangers in steps (a) and (b) and the anions of the strong acid; and h) directing the salt solution obtained as the effluent of step (g) for commercial use.

Patent Agency Ranking