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    1.
    发明专利
    未知

    公开(公告)号：DE3873714D1

    公开(公告)日：1992-09-17

    申请号：DE3873714

    申请日：1988-12-24

    Applicant: BASF AG

    Inventor： DE CLERCQ ARNOLD DR ,  BERGOLD WOLFRAM DR ,  DEGEN HANS-JUERGEN DR ,  MELZER JAROSLAV

    IPC: B01D19/04

    Abstract: Antifoam based on oil-in-water emulsions has an oil phase contg. (a) a 12-26C alcohol, distn. residues from the prodn. of higher alcohols by Oxo synthesis or the Ziegler process and opt. alkoxylated and/or (b) a fatty ester of 12-22C carboxylic acids with a mono- to trihydric 1-18C alcohol; and opt. (c) a hydrocarbon with b.pt. above 200 deg.C or 12-22C fatty acids. This comprises 5-50 (wt.)% of the emulsion and has an average particle size of under 25 microns. The novelty is that 5-50% of components (a) and (b) in the oil phase are replaced by (d) at least one cpd. with m.pt. above 70 deg.C, consisting of fatty alcohols (I) with min. 28C, esters (II) of 1-22C carboxylic acids with (I), adducts of 2-4C alkylene oxides with (I), polyethylene waxes (III) with mol.wt. min. 2000, carnauba wax (IV) and/or montan ester waxes (VA) and montan acid waxes (VB) and their salts (VC).

    3.
    发明专利
    未知

    公开(公告)号：ES2034147T5

    公开(公告)日：1996-10-16

    申请号：ES88121650

    申请日：1988-12-24

    Applicant: BASF AG

    Inventor： DE CLERCQ ARNOLD DR ,  BERGOLD WOLFRAM DR ,  DEGEN HANS-JURGEN DR ,  MELZER JAROSLAV

    IPC: B01D19/04

    Abstract: Defoamers in which the oil phase of the emulsions contains… (a) a C12- to C26-alcohol, distillation residues obtainable during the production of alcohols with a relatively high carbon number by oxo synthesis or by the Ziegler process and which may also be alkoxylated, and/or… (b) a fatty acid ester of C12- to C22- carboxylic acids with a mono- to tri-hydric C1- to C18-alcohol and optionally… (c) a hydrocarbon having a boiling point above 200 DEG C or fatty acids having 12 to 22 carbon atoms,… comprises 5 to 50% by weight of the make-up of the emulsion and has a mean particle size of less than 25 mu m, and in which 5 to 50 % by weight of the components (a) and (b) of the oil phase are replaced by… (d) at least one compound melting at a temperature above 70 DEG C selected from the group of fatty alcohols having at least 28 C atoms, the esters of a C1- to C22-carboxylic acid with an alcohol having at least 28 C atoms, the polyethylene waxes having a molecular weight of at least 2000, the carnauba waxes, the montanic ester waxes and the montanic acid waxes and their salts.

    6.
    发明专利
    未知

    公开(公告)号：DE4001237A1

    公开(公告)日：1991-07-25

    申请号：DE4001237

    申请日：1990-01-18

    Applicant: BASF AG

    Inventor： KSOLL PETER DR ,  HAHN ERWIN DR ,  WITTMER PETER ,  HOHMANN ANDREAS DR ,  DE CLERCQ ARNOLD DR ,  RIEBELING ULRICH

    IPC: C09K23/00 ,  B01J13/00 ,  C07C45/90 ,  C07C49/88 ,  C07D305/12 ,  C07D315/00 ,  D21H17/06 ,  D21H17/07 ,  D21H17/17 ,  D21H17/46 ,  D21H21/14

    Abstract: Stabilised aqueous C14- to C22-alkyldiketene emulsions containing, as essential components, (a) 10 to 60 % by weight of at least one C14- to C22-alkyldiketene, (b) 1 to 10 % by weight of at least one protective colloid and (c) 0.1 to 20 % by weight of at least one ester of the formula in which R , R are C14- to C22-alkyl, in which case R and R must differ in the alkyl group by at least 4 C atoms, and/or denote identical or different C14- to C22-alkenyl groups, an ester of the formula R -O-CO-O-R (II), in which R and R are alkyl or alkenyl radicals having 2 to 22 C atoms or a urethane of the formula in which R , R and R are identical or different alkyl or alkenyl radicals having 2 to 22 C atoms, and the use of the compounds of the formula I to III as stabiliser for the preparation of alkyldiketene emulsions containing at least 10, preferably 16 to 40 % by weight of alkyldiketene in emulsified form.

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