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    2.
    发明专利
    未知

    公开(公告)号：DE59102482D1

    公开(公告)日：1994-09-15

    申请号：DE59102482

    申请日：1991-06-26

    Applicant: HOECHST AG

    Inventor： STAFFEL THOMAS DR ,  ADRIAN RENATE

    IPC: B01D53/34 ,  B01D53/58

    Abstract: To eliminate ammonia from steam-containing gases, in particular exhaust gases, the gases are brought into intimate contact with heated polyphosphoric acid, the polyphosphoric acid advantageously having a P2O5 content of 70 to 84% by weight and a temperature of 120 to 170 DEG C.

    COGRANULATE FROM ALKALI SILICATE AND ALKALI PHOSPHATE, AND PROCESS FOR THE PREPARATION OF THE GRANULATE
    3.
    发明专利
    COGRANULATE FROM ALKALI SILICATE AND ALKALI PHOSPHATE, AND PROCESS FOR THE PREPARATION OF THE GRANULATE 未知

    公开(公告)号：DE3361593D1

    公开(公告)日：1986-02-06

    申请号：DE3361593

    申请日：1983-02-19

    Applicant: HOECHST AG

    Inventor： MAURER ALEXANDER DR ,  WASEL-NIELEN HORST-DIETER DR ,  ADRIAN RENATE

    IPC: C11D3/06 ,  C11D3/08

    Abstract: The disclosure relates to an abrasion-resistant storable cogranulate consisting of particles with a size of about 0.2 to 2 mm and having an apparent density of 800 to 1100 g/liter, the cogranulate containing (a) about 14.3 to 79.9 weight % of pentasodium tripolyphosphate (b) about 10.9 to 79.9 weight % of an alkali metal silicate (c) about 0.1 to 7.7 weight % of an ammonium polyphosphate of the followiong general formula (I) H(n-m)+2(NH4)mPnO3m+1 (I) in which n stands for an integral average value of 10 to 1000, m stands for a whole number of at most n+2 and m/n stands for a value of about 1, and (d) about 0 to 99 weight % water bound to components (a) and (b), based on the possible maximum quantity of hydration water of the components (a) and (b).

    PROCESS FOR PRODUCING GRANULATED ALKALI ORTHOPHOSPHATES
    4.
    发明专利
    PROCESS FOR PRODUCING GRANULATED ALKALI ORTHOPHOSPHATES 未知

    公开(公告)号：DE3260122D1

    公开(公告)日：1984-06-07

    申请号：DE3260122

    申请日：1982-01-14

    Applicant: HOECHST AG

    Inventor： MAURER ALEXANDER DR ,  ADRIAN RENATE

    IPC: C11D3/06 ,  B01J2/00 ,  B01J2/28 ,  C01B25/30 ,  C05B19/00

    Abstract: The disclosure relates to a process for making granulated, hydrated alkali metal orthophosphates. To this end, the disclosure provides for one or more anhydrous or partially hydrated alkali metal orthophosphates presenting a degree of hydration of less than 90%, based on the theoretically possible degree of hydration, and containing an at least 20% proportion of particles with a size of less than 0.045 mm, to be intensively mixed and granulated with water and an ammonium polyphosphate.

    PRODUCTION OF GRANULAR ALKALI METAL DIPHOSPHATES OR TRIPHOSPHATES
    5.
    发明专利
    PRODUCTION OF GRANULAR ALKALI METAL DIPHOSPHATES OR TRIPHOSPHATES 未知

    公开(公告)号：CA1166820A

    公开(公告)日：1984-05-08

    申请号：CA385590

    申请日：1981-09-10

    Applicant: HOECHST AG

    Inventor： MAURER ALEXANDER ,  ADRIAN RENATE ,  PANTER HERBERT ,  HEYMER GERO ,  NOLKER DIETER

    IPC: C01B25/41 ,  C01B25/42 ,  C11D3/06

    Abstract: PRODUCTION OF GRANULAR ALKALI METAL DIPHOSPHATES OR TRIPHOSPHATES The invention relates to a process for making granulated, partially or completely hydrated alkali metal diphosphates or triphosphates. To this end, the invention provides for alkali metal diphosphates or triphosphates which consist to an extent of at least 20 % of particles with a size of less than 0.045 mm and are hydrated to an extent of less than 90 %, based on the phosphates' theoretical content of water of hydration, to be intensively mixed and granulated in the presence of water and an ammonium polyphosphate, 50 weight %, based on the quantity of water used.

    7.
    发明专利
    未知

    公开(公告)号：DK109583D0

    公开(公告)日：1983-03-04

    申请号：DK109583

    申请日：1983-03-04

    Applicant: HOECHST AG

    Inventor： MAURER ALEXANDER ,  WASEL-NIELEN HORST-DIETER ,  ADRIAN RENATE

    IPC: C11D3/06 ,  C11D3/08 ,  C11D

    Abstract: The disclosure relates to an abrasion-resistant storable cogranulate consisting of particles with a size of about 0.2 to 2 mm and having an apparent density of 800 to 1100 g/liter, the cogranulate containing (a) about 14.3 to 79.9 weight % of pentasodium tripolyphosphate (b) about 10.9 to 79.9 weight % of an alkali metal silicate (c) about 0.1 to 7.7 weight % of an ammonium polyphosphate of the followiong general formula (I) H(n-m)+2(NH4)mPnO3m+1 (I) in which n stands for an integral average value of 10 to 1000, m stands for a whole number of at most n+2 and m/n stands for a value of about 1, and (d) about 0 to 99 weight % water bound to components (a) and (b), based on the possible maximum quantity of hydration water of the components (a) and (b).

    CALCIUM AND MAGNESIUM PHOSPHATE HYDRATE AS ANTICORROSION PIGMENT
    8.
    发明专利
    CALCIUM AND MAGNESIUM PHOSPHATE HYDRATE AS ANTICORROSION PIGMENT 未知

    公开(公告)号：CA1131001A

    公开(公告)日：1982-09-07

    申请号：CA348607

    申请日：1980-03-27

    Applicant: HOECHST AG

    Inventor： MAURER ALEXANDER ,  ADRIAN RENATE ,  HESTERMANN KLAUS ,  HEYMER GERO

    IPC: C09D5/08 ,  C01B25/32 ,  C09C1/00 ,  C09C1/02

    Abstract: The invention relates to the production of phosphoruscontaining anticorrosive pigments with a particle size of at most 20 microns by reacting one or more calcium or magnesium compounds with phosphoric acid or acid alkali metal or ammonium phosphates by intimately mixing an aqueous suspension or solution of the reactants inside a dispersing means rotating at a speed of 3000 to 10 000 rpm. More partic ularly, fine pulverulent calcium and magnesium compounds are converted, with agitation, together with water and, if desired, a water-soluble alkanol to a homogeneous suspension or solution. The suspension or solution is intimately mixed, inside the dispersing means at 0 to 40.degree. C and in an approximately stoichiometric ratio, with the phosphoric acid or acid phosphate solution. Resulting and precipitated pigment is separated and dried under mild conditions while maintaining its content of water of crystallization. The anticorrosive pigment is comprised of a homogeneous mixture and/or mixed crystals of which 10 to 95 mol% is calcium hydrogen phosphate dihydrate, the balance being magnesium hydrogen phosphate trihydrate. An at least 55 weight% proportion consists of particles with a size of up to 5 microns with a BET-surface of at least 1m2/g.

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