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公开(公告)号：DE3201226A1
公开(公告)日：1983-07-28
申请号：DE3201226
申请日：1982-01-16
Applicant: BASF AG
Abstract: An amino-containing and carboxyl-containing polymer tanning agent containing more carboxyl groups than amino groups, when used for retanning mineral-tanned leather, gives, alone or in combination with conventional anionic retanning agents, leather which is readily dyeable and has good sensory properties.
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公开(公告)号：DE2536120A1
公开(公告)日：1977-03-03
申请号：DE2536120
申请日：1975-08-13
Applicant: BASF AG
Abstract: Prepn. of pigments of formulae (I) and (II): (in which R is H, Cl, Br Me, OMe, OEt or SO2Me) by condensn. of 2 mols. o-aminophenol of formula: with 1 mol. acid or formula: or its anhydride or 1-4C alkyl diester, in N-methyl pyrrolidone (I) as reaction medium and in absence of alkali. High yields of pigment are obtd. of high purity giving improved brilliance and fastness compared with that from known processes of condensn. in other solvents in presence of acid acceptors.
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公开(公告)号：DE3124172A1
公开(公告)日：1982-12-30
申请号：DE3124172
申请日：1981-06-19
Applicant: BASF AG
Inventor： BERGMANN UDO DIPL ING DR , HANSEN GUENTER DIPL CHEM DR , LACH DIETRICH DIPL CHEM DR , THOMAS MICHAEL DIPL CHEM DR , ZEIDLER GEORG
IPC: C09B33/02 , C09B33/00 , C09B33/04 , C09B45/04 , C09B45/24 , C09B45/32 , D06P3/06 , D06P1/39 , D06P3/02
Abstract: The present invention discloses substituted phenyl di and trisazo dyes free of reactive groups having two or three sulfonic acid groups, of the general formula: (I) wherein D1 is Z is hydrogen or D4-N=N-; D2 is phenyl substituted by hydroxyl, hydroxysulfonyl, chlorine or nitro, or is naphthyl substituted by hydroxy, hydroxysulfonyl or nitro, X, independently of one another, are hydroxyl or amino, D3 is phenyl which is substituted by hydroxysulfonyl, chlorine, bromine, methyl, methoxy, ethoxy, nitro, phenylamino, sulfophenylamino or nitrosulfophenylamino, or is naphthyl which is substituted by hydroxysulfonyl; D4 is phenyl which is unsubstituted or substituted by methyl, ethyl, methoxy, ethoxy, chlorine, bromine, nitro, sulfamoyl or hydroxysulfonyl, or is naphthyl which is substituted by hydroxysulfonyl; and R2 is methyl, ethyl or allyl; the rings B and E may additionally be substituted by methyl, ethyl, methoxy, ethoxy, chlorine, bromine or hydroxysulfonyl, with the proviso that D2 has a hydroxyl group ortho to the azo bond; or the iron, manganese, cobalt, chromium, nickel or copper complexes of this dye. These compounds, particularly in the form of their metal complexes are suitable for dyeing nitrogen-containing fibers such as wool, and preferably, leather. The present dyes yield very fast brown hues, in particular on retanned leather.
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公开(公告)号：DE2843233A1
公开(公告)日：1980-04-10
申请号：DE2843233
申请日：1978-10-04
Applicant: BASF AG
Inventor： LACH DIETRICH DIPL CHEM DR
Abstract: Mineral tanned leather is frequently retanned with synthetic tanning agents to improve the fullness and softness, but leather retanned by the prior art methods is difficult to dye in full shades with anionic dyes. According to the invention, condensation products of C1-4 aldehydes with certain aromatic sulfonic acids or carboxylic acids containing amino groups are employed for retanning, thereby improving the receptivity of the leather for anionic dyes. These acids have the general formula where X and X' are independently H, -CH2-SO3H or -CH2-OH, A is a benzene radical, Y and Z are independently H, -SO3H or -CO2H, R is H or C1-4-alkyl and n is from 0 to 10, with the proviso that at least one sulfonic acid or carboxyl group is present in the molecule.
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Patent Agency Ranking
公开(公告)号：DE2635158A1
公开(公告)日：1978-02-09
申请号：DE2635158
申请日：1976-08-05
Applicant: BASF AG
Inventor： LACH DIETRICH DIPL CHEM DR
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公开(公告)号：DE3115646A1
公开(公告)日：1982-11-18
申请号：DE3115646
申请日：1981-04-18
Applicant: BASF AG
Abstract: Water-soluble or self-dispersing resin tanning agents are prepared by heating from 5 to 30% by weight of melamine, from 15 to 45% by weight of urea, from 20 to 35% by weight (calculated as anhydrous material) of formaldehyde and from 15 to 55% by weight of sodium bisulfite or of a corresponding amount of some other salt of sulfurous acid for from two to twelve hours in aqueous solution at 40 DEG -120 DEG C. and a pH of from 5 to 9.
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公开(公告)号：DE3108428A1
公开(公告)日：1982-09-23
申请号：DE3108428
申请日：1981-03-06
Applicant: BASF AG
Inventor： HAHN ERWIN DIPL CHEM DR , LACH DIETRICH DIPL CHEM DR , SCHNEIDER KURT DIPL CHEM DR , STRICKLER RAINER DIPL CHEM DR , STREICHER ROLF
IPC: C14C1/08
Abstract: Conventionally limed hides are delimed for from one to six hours under conventional deliming conditions in respect of liquor length, temperature and pH of the liquor, by a process in which a cyclic carbonate of a polyhydric aliphatic alcohol of 2 to 6 carbon atoms is employed as the active agent.
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9.发明专利
公开(公告)号：DE2753695A1
公开(公告)日：1979-06-07
申请号：DE2753695
申请日：1977-12-02
Applicant: BASF AG
Inventor： LACH DIETRICH DIPL CHEM DR
IPC: C09B62/095 , C09B62/08 , C09B45/18
Abstract: Dye mixts. contain >=2 reactive dyes of formula (in (I) X is F, Cl, Br or a tri-substd. amine gp.; Y is a gp. contg. SO3H). Used in dyeing and esp. printing of cellulose textiles, natural and synthetic polyamides and leather. High brilliance and very good fastness, esp. to light, washing and perspiration. They give level prints, i.e. contrast to the single dyes. Pref. X is F or Cl; Y is NHC2H4SO3H, sulphophenylamino opt. substd. with Cl or methyl, or esp. m- or p-sulphophenylamino.
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公开(公告)号：DE2524747A1
公开(公告)日：1976-12-16
申请号：DE2524747
申请日：1975-06-04
Applicant: BASF AG
IPC: C07C205/47 , C07C67/00 , C07C201/00 , C09B1/00 , C07C79/37
Abstract: A process for the isolation of mixtures of 1,5-dinitroanthraquinone and 1,8-dinitroanthraquinone which have a high content of alpha , alpha '-dinitroanthraquinones by heating a suspension of the crude dinitroanthraquinone mixture in certain organic liquids at from 60 DEG to 200 DEG C until solution equilibrium has been set up, and separating the undissolved material from the solution. The undissolved material contains more than 90% and as a rule more than 95% by weight of 1,5-dinitroanthraquinone and 1,8-dinitroanthraquinone. The pure mixture of 1,5-dinitroanthraquinone and 1,8-dinitroanthraquinone may be used for the manufacture of dyes.
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