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    1.
    发明专利
    未知

    公开(公告)号：ES2159978T3

    公开(公告)日：2001-10-16

    申请号：ES99108791

    申请日：1999-05-03

    Applicant: DMC2 DEGUSSA METALS CATALYSTS

    Inventor： STARZ KARL-ANTON DR ,  ZUBER RALF DR ,  GOTTENAUER WOLFGANG DR ,  FEHL KNUT ,  DIEHL MANFRED DR

    IPC: H01M4/88 ,  B05D7/04 ,  C25B9/23 ,  H01M8/10 ,  H01M8/1004 ,  C25B9/10

    Abstract: Electrode layer pattern is applied onto a polymer electrolyte membrane (PEM) web by continuously printing with an ink containing an electro-catalyst and immediately drying. An electrode layer pattern is applied onto a polymer electrolyte membrane web by printing front and back faces of the membrane continuously in the desired pattern with the electrode layers using an ink containing an electro-catalyst and immediately drying at elevated temperature. Printing is carried out while maintaining accurate positions of the patterns of electrode layers of front and back faces relative to one another. Independent claims are also included for the following: (i) application of patterned electrode layers onto a polymer electrolyte membrane web by printing one side of the membrane continuously in the desired pattern with the electrode layers using an ink containing an electro-catalyst and immediately drying at elevated temperature; (ii) production of a membrane-electrode unit by placing, adhesive bonding or laminating gas distribution structures onto a printed polymer electrolyte membrane produced by one of the above processes; and (iii) a PEM fuel cell membrane-electrode unit produced as described above.

    2.
    发明专利
    未知

    公开(公告)号：DE59200379D1

    公开(公告)日：1994-09-22

    申请号：DE59200379

    申请日：1992-02-26

    Applicant: DEGUSSA

    Inventor： STEINER NORBERT DR ,  GOS STEPHEN ,  LADWIG FRANK ,  DIEHL MANFRED DR

    IPC: C02F1/58 ,  C02F1/72 ,  C02F9/00

    Abstract: The invention relates to a process for detoxifying cyanide- and/or cyanocomplex-containing aqueous solutions in the presence of heavy metals from the series consisting of Mn, Co, Ni, Cu, Cd, Zn, in particular Cu, by oxidative treatment of the solutions with a peroxide compound at pHs of 8 to 12, the peroxide compound used being an alkali metal percarbonate. The alkali metal percarbonate, preferably 2 Na2CO3 . 3 H2O2, is preferably added in solid form to the solutions to be detoxified. The process according to the invention, with respect to the use of peroxide compound, is significantly more effective than the previously known process using hydrogen peroxide.

    3.
    发明专利
    未知

    公开(公告)号：DE59200105D1

    公开(公告)日：1994-05-11

    申请号：DE59200105

    申请日：1992-02-26

    Applicant: DEGUSSA

    Inventor： DIEHL MANFRED DR ,  FISCHER JOACHIM ,  WOLF HUBERT

    IPC: C02F1/58 ,  C02F1/72

    Abstract: The invention relates to a process for detoxifying aqueous solutions containing cyanohydrins, in particular glycolonitrile and/or nitriles, which additionally contain decomposition catalysts for peroxide compounds, in particular manganese compounds, by perhydrolysis of the cyano compounds at temperatures of 5 to 80 DEG C and pHs of 8 to 12, with one or more peroxide compounds selected from the group comprising the alkali metal percarbonates, alkali metal perborates and alkaline earth metal perborates and the alkaline earth metal peroxides, the peroxide compounds mentioned being added as such to the solution to be detoxified or are formed in situ in the solution to be detoxified. Sodium percarbonate is preferably used. … The process according to the invention is more effective and more economical than the previously known process using hydrogen peroxide.

    Stable aqueous suspension of silicates which are insoluble in water and capable of binding calcium ions, and the use thereof for producing detergents and cleaners
    7.
    发明专利
    Stable aqueous suspension of silicates which are insoluble in water and capable of binding calcium ions, and the use thereof for producing detergents and cleaners 未知

    公开(公告)号：DE3818657A1

    公开(公告)日：1988-12-15

    申请号：DE3818657

    申请日：1988-06-01

    Applicant: DEGUSSA

    Inventor： DIEHL MANFRED DR ,  BERGMANN ROLAND

    IPC: C09K23/42 ,  C11D1/72 ,  C11D1/825 ,  C11D3/12 ,  B01F17/42

    Abstract: Stable, pumpable aqueous suspension of a silicate which is insoluble in water and is capable of binding calcium ions and which contains, based on the total weight of the aqueous suspension, a) as silicate capable of binding calcium, 0.5 to 80 per cent by weight of a finely divided, synthetic compound which contains bound water, is insoluble in water and has the general formula (Cat2/nO)x.Me2O3.(SiO2)y in which Cat is a cation which has n charges and can exchange with calcium, x is a number from 0.7 to 1.5, Me is boron or aluminium and y is a number from 0.8 to 6, and b) as dispersant component 0.5 to 6 per cent by weight of a mixture of at least two oxo alcohol ethoxylates of the formula II R-(OCH2CH2)n-OH, where R = C10-C15-alkyl with a maximum degree of branching of 25%, i.e. a maximum of 25% of the fatty alcohol ethoxylate has a single methyl branch, n = 3-5.5 mol of EO for component 1, n = 5.75-7 mol of EO for component 2. The suspension can be used to produce detergent and cleaning powders.

    AQUEUOS STABLE SUSPENSION OF WATER INSOLUBLE SILICATES AND THEIR USE FOR THE PRODUCTION OF PHOSPHATE-SUBSTITUTES FOR WASHSING AND CLEANING AGENTS
    8.
    发明专利
    AQUEUOS STABLE SUSPENSION OF WATER INSOLUBLE SILICATES AND THEIR USE FOR THE PRODUCTION OF PHOSPHATE-SUBSTITUTES FOR WASHSING AND CLEANING AGENTS 未知

    公开(公告)号：DE3469915D1

    公开(公告)日：1988-04-21

    申请号：DE3469915

    申请日：1984-05-05

    Applicant: DEGUSSA

    Inventor： DIEHL MANFRED DR ,  BERGMANN ROLAND ,  STADTMULLER GUNTER

    IPC: C09K23/42 ,  C11D3/00 ,  C11D3/12

    Abstract: Aq. suspensions of a water-insoluble silicate capable of bonding Ca ions contain, by wt., (A) 4-25%, w.r.t. suspension, of tri-Na nitrilo-triacetate, dissolved in the aq. phase, provided that the suspension contains at least 20% water, in addn. to (B) 0.5-80% finely-divided, bonded water-contg., synthetic, water-insoluble silicate of formula (I) (Cat2/nO)x.M2O3.(SiO2)y (I) Cat=Ca-exchangeable cation of valency n; x=no. 0.7-1.5; M=B or Al; y=no. 0.8-6 (1.3-4) and (C) as dispersant, 0.5-6% mixt. of at least 2 different alkyl-phenol ethoxylates of formula (II). A claimed phosphate substitute, for detergents and cleansing compsns., contains (A), (B) and (C). The aq. suspensions are used for the prepn. of powdered or granulated phosphate substits. for detergent- and cleansing compsns. by spray-drying.

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