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    2.
    发明专利
    未知

    公开(公告)号：BR9504023A

    公开(公告)日：1996-09-24

    申请号：BR9504023

    申请日：1995-09-14

    Applicant: RHONE POULENC CHIMIE

    Inventor： DOS SANTOS EMMANUEL ,  METIVIER PASCAL

    IPC: B01J27/13 ,  B01J27/188 ,  B01J27/19 ,  B01J31/04 ,  C07B61/00 ,  C07C51/16 ,  C07C51/27 ,  C07C51/285 ,  C07C53/124 ,  C07C55/00 ,  C07C55/16 ,  C07C55/18 ,  C07C69/24 ,  C07C69/347 ,  C07C69/44 ,  C11C3/00 ,  C07C53/126 ,  C07C55/02 ,  C07C67/04 ,  C07C69/22 ,  C07C69/34

    Abstract: Prepn. of mono- and di-carboxylic acids from unsatd. fatty acids and/or derivs., comprises: (i) oxidising an unsatd. fatty acid, in the form of an acid and/or ester, with hydrogen peroxide in presence of a metal oxide or a carboxylic acid, opt. with a ruthenium catalyst; (ii) reacting the mixt. with nitric acid in presence of a vanadium catalyst, opt. with a co-catalyst; and (iii) recovering the mono- and di-carboxylic acids. The starting material is pref. a fatty acid with at least one double bond, an animal fat or oil, a vegetable oil, an ester of a pptd. fatty acid and is pref. oleic, colza, sunflower and soya oil. The ruthenium catalyst is pref. present in amt. of 1-35 % w.r.t. H2O2. H2O2 may be used with a gp. VIa metal catalyst, esp. a W and/or Mo catalyst in amt. of 1-35 (pref. 3-10) %, w.r.t. H2O2. The vanadium catalyst may be a V halide, a V oxide, a V oxyhalide, a V or vanadyl sulphate, an alkali metal or ammonium vanadate, or V acetylacetonate. The optional V co-catalyst may be based on a Gp. VIIa or VIII metal. A stoichiometric amt. of H2O2 or a 0-50 % excess is used with a carboxylic acid in a hydrogen peroxide : carboxylic acid molar ratio of 10-500 (pref. 10-40) %.

    3.
    发明专利
    未知

    公开(公告)号：FR2730731A1

    公开(公告)日：1996-08-23

    申请号：FR9501927

    申请日：1995-02-20

    Applicant: RHONE POULENC CHIMIE

    Inventor： METIVIER PASCAL ,  DOS SANTOS EMMANUEL

    IPC: C07C51/15 ,  C07C65/21 ,  C07C47/58

    Abstract: A method for carboxylating a phenol ether, particularly guaiacol and guetol, wherein said phenol ether in salt form is reacted with carbon dioxide at a temperature below 150 DEG C in an aprotic, polar and basic organic solvent.

    8.
    发明专利
    未知

    公开(公告)号：DE69309709T2

    公开(公告)日：1997-10-30

    申请号：DE69309709

    申请日：1993-12-10

    Applicant: RHONE POULENC CHIMIE

    Inventor： DOS SANTOS EMMANUEL ,  METIVIER PASCAL ,  GUBELMANN MICHEL

    IPC: B01J21/06 ,  B01J23/16 ,  B01J23/46 ,  B01J23/70 ,  C07C51/06 ,  C07C55/00 ,  C07C55/10 ,  C07C55/12 ,  C07C55/14

    Abstract: PCT No. PCT/FR93/01232 Sec. 371 Date Jul. 23, 1995 Sec. 102(e) Date Jul. 23, 1995 PCT Filed Dec. 10, 1993 PCT Pub. No. WO94/13616 PCT Pub. Date Jun. 23, 1994Process for the treatment of a material comprising a polymer, especially a polyamide. The process consists in subjecting the polyamide to hydrolysis in the presence of a hydrolyzing nitrous grouping and transforming the hydrolyzed compounds into diacids. The treatment of a polyamide 6.6 results in the recovery of adipic acid and other diacids corresponding to the participating acid monomer and to the transformation of at least one part of the diamine monomer into diacids.

    10.
    发明专利
    未知

    公开(公告)号：AT151404T

    公开(公告)日：1997-04-15

    申请号：AT94902022

    申请日：1993-12-10

    Applicant: RHONE POULENC CHIMIE

    Inventor： DOS SANTOS EMMANUEL ,  METIVIER PASCAL ,  GUBELMANN MICHEL

    IPC: B01J21/06 ,  B01J23/16 ,  B01J23/46 ,  B01J23/70 ,  C07C51/06 ,  C07C55/00 ,  C07C55/10 ,  C07C55/12 ,  C07C55/14

    Abstract: PCT No. PCT/FR93/01232 Sec. 371 Date Jul. 23, 1995 Sec. 102(e) Date Jul. 23, 1995 PCT Filed Dec. 10, 1993 PCT Pub. No. WO94/13616 PCT Pub. Date Jun. 23, 1994Process for the treatment of a material comprising a polymer, especially a polyamide. The process consists in subjecting the polyamide to hydrolysis in the presence of a hydrolyzing nitrous grouping and transforming the hydrolyzed compounds into diacids. The treatment of a polyamide 6.6 results in the recovery of adipic acid and other diacids corresponding to the participating acid monomer and to the transformation of at least one part of the diamine monomer into diacids.

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