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    1.
    发明专利
    未知

    公开(公告)号：DE59405873D1

    公开(公告)日：1998-06-10

    申请号：DE59405873

    申请日：1994-02-10

    Applicant: BASF AG

    Inventor： WEISEN JUERGEN DR ,  REUTHER WOLFGANG DR ,  HAHN ERWIN DR

    IPC: C08G14/10 ,  C08J11/16 ,  C09D161/34 ,  C14C3/20

    Abstract: A process for the recycling of cured amino resins in which cured amino resins, optionally containing fillers, are treated with an aqueous sulphite, hydrogen sulphite or disulphite solution and the resultant low-molecular-weight degradation products are employed in chemical processes. The invention also relates to the low-molecular-weight degradation products of cured amino resins which are obtainable by this process, and to their use for the coating of mouldings, for the tanning of leather and hides, and for the production of mouldings containing or comprising cured amino resins.

    2.
    发明专利
    未知

    公开(公告)号：DE4446386A1

    公开(公告)日：1996-06-27

    申请号：DE4446386

    申请日：1994-12-23

    Applicant: BASF AG

    Inventor： GUENTHER ERHARD DR ,  REUTHER WOLFGANG DR

    IPC: C08L61/28 ,  C08G12/32 ,  C08G14/10 ,  C08K3/00 ,  C08K5/00 ,  C08L61/34 ,  C09D161/28 ,  C09D161/34 ,  D01F1/04 ,  D01F1/06 ,  D01F6/74 ,  D01F6/76 ,  D03D1/00 ,  D04H1/64 ,  C08J3/20 ,  D01F6/94 ,  D01D5/18 ,  D04H13/00

    Abstract: Dyed melamine-formaldehyde condensation products are prepared by mixing pigments or dyes with a reaction mixture that contains base compounds for preparing melamine-formaldehyde condensation products. For that purpose (A) a mixture is used that substantially consists of (a) a substituted melamine having the formula (I), in which X , X and X are selected from the group that consists of -NH2, -NHR and NR R , and X , X and X are not -NH2 simultaneously, and R and R are selected from the group that consists of hydroxy-C2-C10-alkyl, hydroxy-C2-C4-alkyl-(oxa-C2-C4-alkyl)n, n being equal to 1 to 5, and amino-C2-C12-alkyl, or mixtures of melamines (I); and optionally (b) formaldehyde or formaldehyde releasing compounds, the molar ratio between formaldehyde and the melamines (I) being selected in a range from 40:1 to 0; (c) a pigment or a dye; and optionally (d) an unsubstituted phenol or phenols substituted with residues selected from the group that consists of C1-C9-alkyl and hydroxy, substituted phenols, C1-C4-alkanes substituted with two or three phenol groups, di(hidroxyphenyl)sulfones or mixtures of such phenols. The amount of pigment or dye ranges from 0.01 to 30 % by weight in relation to (a) and (b), and the amount of phenol ranges from 0 to 5 mol % in relation to (a) and (b). Said mixture is dispersed under intensive stirring until no more pigment agglomerates equal to or larger than 1 mu m are present. The mixture produced in (A) is then (B) mixed with melamine and if desired with more phenol, substituted melamine (I) and formaldehyde or formaldehyde releasing compounds, their respective amounts being selected so that the molar ratio between melamines (melamine and (a)) and (b) ranges from 1:1.15 to 1:4.5, the amount of pigment or dye ranges from 0.01 to 5 % by weight in relation to melamine, (a) and (b), and the amount of phenol ranges from 0 to 5 mol % in relation to melamine, (a) and (b). The mixture is then condensed in a known manner.

    5.
    发明专利
    未知

    公开(公告)号：DE4330910A1

    公开(公告)日：1995-03-16

    申请号：DE4330910

    申请日：1993-09-11

    Applicant: BASF AG

    Inventor： GUENTHER ERHARD DR ,  REUTHER WOLFGANG DR ,  KIRCHGAESSNER UWE DR

    IPC: C08G12/34 ,  C08G14/06 ,  C08G14/08 ,  C08J9/06 ,  C08L61/28 ,  D01F6/74 ,  C08G14/10 ,  C08L61/34 ,  C08J9/00 ,  D01F6/78

    Abstract: Water-insoluble condensation products obtainable by condensation of a mixture containing, as essential components, (A) from 80 to 99.9 mol%, based on the total of (A), (B) and (C), of a mixture essentially comprising (a) from 30 to 99 mol% of melamin and (b) from 1 to 70 mol% of a substituted melamin of the formula I in which X, X' and X'' are selected from the group consisting of -NH2, -NHR and -NRR', and X, X' and X'' are not simultaneously -NH2 and R and R' are selected from the group consisting of hydroxy-C2-C10-alkyl, hydroxy-C2-C4-alkyl-(oxa-C2-C4-alkyl)n, where n = 1 to 5, and amino-C2-C12-alkyl, or mixtures or melamins I, (B) from 0.1 to 10 mol%, based on the total of (A), (B) and (C), of a polyurea of the formula II where A is or Y is a C1-C6-alkylene group, n is 0 or 1, X is a C1-C6-alkylene group, a C5-C6-cycloalkylene group, a C1-C6-hydroxyalkylene group or a C4-C18-oxyalkylene group, and R -R are H or CH2OH, and (C) up to 10 mol%, based on the total of (A), (B) and (C), of unsubstituted or C1-C9-alkyl- or hydroxyl-substituted phenols, di- or tri-phenol-substituted C1-C4-alkanes, di(hydroxyphenyl)sulfones, or mixtures of these phenols, with formaldehyde or formaldehyde-releasing compounds, where the molar ratio between melamins and formaldehyde is in the range from 1:1.15 to 1:4.5.

    8.
    发明专利
    未知

    公开(公告)号：DE58907097D1

    公开(公告)日：1994-04-07

    申请号：DE58907097

    申请日：1989-11-18

    Applicant: BASF AG

    Inventor： BAUS ULF DR ,  REUTHER WOLFGANG DR

    IPC: A61K31/00 ,  C07D231/00 ,  C07D231/16

    Abstract: Process for the preparation of 4-chloropyrazoles of the general formula I in which R to R , independently of one another, denote hydrogen or a radical which is inert under the reaction conditions, by reacting pyrazoles of the general formula II in which R to R have the abovementioned meanings, with 0.95 to 10 equivalents of hypochlorous acid or its salts, essentially in the absence of a carboxylic acid.

    10.
    发明专利
    未知

    公开(公告)号：DE3776708D1

    公开(公告)日：1992-03-26

    申请号：DE3776708

    申请日：1987-03-27

    Applicant: BASF AG

    Inventor： EBEL KLAUS DR ,  REUTHER WOLFGANG DR

    IPC: C07D251/70 ,  C08G18/38 ,  C08G59/50

    Abstract: In the prepn. of pure aminoalkyl- or -aryl-melamine derivs. of formula (I), melamine is reacted with a diamine of formula H2N-R-NH2 (IV) in molar ratio diamine:melamine at least 10:1, esp. at least 20:1. In (I), R = linear alkylene contg. at least 2C, branched alkylene contg. at least 3C, cycloalkylene contg. at least 5C, and one or more C atoms in the alkylene or cycloalkylene gps. can be replaced by heteroatoms, or R is an aromatic gp. or a gp. having formula (II). a, b each = 0-6. A new mixt. is claimed contg. at least 75 wt.% (I) and up to 25 wt.% dimer of (I) having formula (III) obtainable by the process in (1).

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