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    4.
    发明专利
    未知

    公开(公告)号：DE4244194A1

    公开(公告)日：1994-06-30

    申请号：DE4244194

    申请日：1992-12-24

    Applicant: BASF AG

    Inventor： SCHERR GUENTER DR ,  REUTHER WOLFGANG DR ,  MOENCH DIETMAR DR ,  LINHART FRIEDRICH DR ,  WEISER JUERGEN DR

    IPC: C08G18/58 ,  C08G18/60 ,  C08G59/14 ,  C08G59/40 ,  C08G73/00 ,  C08G73/02 ,  D21H17/55 ,  D21H17/56 ,  D21H21/10 ,  C08G69/26 ,  C08G18/64

    Abstract: PCT No. PCT/EP93/03573 Sec. 371 Date Jun. 26, 1995 Sec. 102(e) Date Jun. 26, 1995 PCT Filed Dec. 16, 1993 PCT Pub. No. WO94/14873 PCT Pub. Date Jul. 7, 1994There are described water-soluble condensation products of amino-containing compounds and crosslinkers, obtainable by reacting (a) polyalkylenepolyamines, polyamidoamines, ethylene-imine-grafted polyamidoamines, polyetheramines and mixtures thereof, with (b) monethylenically unsaturated carboxylic acids, salts, esters, amides or nitriles of monoethylenically unsaturated carboxylic acids, chlorocarboxylic acids and/or glycidyl compounds such as glycidic acid, glycidamide or glycidyl esters, and (c) at least bifunctional crosslinkers having a halo-hydrin, glycidyl, aziridine or isocyanate unit or a halogen atom as functional group, to form water-soluble condensation products having a viscosity of at least 100 mPas in a 20% strength by weight aqueous solution at 20 DEG C., processes for preparing the water-soluble condensation products by reacting the abovementioned compounds of groups (a), (b) and (c), and the use of the condensation products as drainage, flocculation and retention aids in papermaking.

    Water-soluble condensn. prods. prepn. for tanning agents - by partial oxidn. of glyoxal using excess nitric acid, then reaction with melamine, dicyandiamide, or (thio) urea and condensable cpds. etc.
    5.
    发明专利
    Water-soluble condensn. prods. prepn. for tanning agents - by partial oxidn. of glyoxal using excess nitric acid, then reaction with melamine, dicyandiamide, or (thio) urea and condensable cpds. etc. 未知

    公开(公告)号：DE4140899A1

    公开(公告)日：1993-06-17

    申请号：DE4140899

    申请日：1991-12-12

    Applicant: BASF AG

    Inventor： REUTHER WOLFGANG DR ,  WEISER JUERGEN DR ,  SCHAFFER ORTWIN DR

    IPC: C08G12/02 ,  C08G14/04 ,  C14C3/18

    Abstract: Prepn. (A) comprises partially oxidising aq. glyoxal using nitric acid to give (B) which is then reacted with components (A), (C) and (D) to give condensn. prods. (I). (A) is 1 mol. melamine, dicyandiamide, (thio)urea or a mixt., (B) is 0.5-12 mols. (w.r.t. total molar amt. of components (B)) mixt. of glyoxylic acid and glyoxal in the molar ratio of 5:95-95:5, (C) is 0-3 mols. condensable cpd. contg. at least one phenolic or alcohol hydroxy gp., and (D) is 0-3 mols. condensable cpd. contg. an amido or amino gp. or an alkali metal or ammonium salt. Pref. 30-70 wt.% HNO3 is used in the partial oxidn. of glyoxal at 40-90 deg.C. USE/ADVANTAGE - (I) are useful as leather tanning agents (claimed). Also claimed is a process using (I) as tanning agents. The prepn. of (I) is a cheap, simple reproducible process. In an example, 1.04 g. sodium nitrite was added to 435 g. aq. glyoxal (40 wt.%) and the obtd. soln. was heated to 70 deg.C with 128 g. HNO3 (65 wt.%) being added over 5 hrs. THe soln. was then heated for 12 hrs. at 90 deg.C and then cooled to 60 deg.C. 63 g. melamine were added and the soln. was stirred for 1 hr. at 60 deg.C to give a clear, light-yellow soln. which was then spray dried (160-100 deg.C) to give 232 g. white powder. The powder was found to contain 2.60 mMol/g. glyoxylic acid, 2.60 glyoxal, 0.20 oxalic acid, 0.12 formic acid and 0.03 nitrat

    6.
    发明专利
    未知

    公开(公告)号：DE4123050A1

    公开(公告)日：1993-01-14

    申请号：DE4123050

    申请日：1991-07-12

    Applicant: BASF AG

    Inventor： WEISER JUERGEN DR ,  REUTHER WOLFGANG DR ,  FIKENTSCHER ROLF DR ,  FATH WOLFGANG DR ,  BERBNER HEINZ ,  ZETTLER HANS DIETER ,  VOELKER HEINZ DR

    IPC: C08G14/09 ,  C08G14/06 ,  C08G14/10

    Abstract: Condensation products obtainable by condensation of a mixture containing, as essential components, (A) from 90 to 99.9 mol % of a mixture essentially comprising (a) from 30 to 99 mol % of melamin and (b) from 1 to 70 mol % of a substitute 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 of melamins I, and (B) from 0.1 to 10 mol %, based on (A) and (B), of phenols which are unsubstituted or substituted by radicals selected from the group consisting of C1-C9-alkyl and hydroxyl, or of C1-C4-alkanes which are substituted by two or three phenol groups, or di(hydroxyphenyl) sulphones, or mixtures of these phenols, with formaldehyde or formaldehyde-generating compounds, where the molar ratio between melamin and formaldehyde is in the range from 1:1.15 to 1:4.5.

    9.
    发明专利
    未知

    公开(公告)号：AT131502T

    公开(公告)日：1995-12-15

    申请号：AT92111371

    申请日：1992-07-04

    Applicant: BASF AG

    Inventor： WEISER JUERGEN DR ,  REUTHER WOLFGANG DR ,  FIKENTSCHER ROLF DR ,  FATH WOLFGANG DR ,  BERBNER HEINZ ,  ZETTLER HANS DIETER ,  VOELKER HEINZ DR

    IPC: C08G14/09 ,  C08G14/06 ,  C08G14/10

    Abstract: Condensation products obtainable by condensation of a mixture containing, as essential components, (A) from 90 to 99.9 mol % of a mixture essentially comprising (a) from 30 to 99 mol % of melamin and (b) from 1 to 70 mol % of a substitute 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 of melamins I, and (B) from 0.1 to 10 mol %, based on (A) and (B), of phenols which are unsubstituted or substituted by radicals selected from the group consisting of C1-C9-alkyl and hydroxyl, or of C1-C4-alkanes which are substituted by two or three phenol groups, or di(hydroxyphenyl) sulphones, or mixtures of these phenols, with formaldehyde or formaldehyde-generating compounds, where the molar ratio between melamin and formaldehyde is in the range from 1:1.15 to 1:4.5.

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