Patent GB-900455-A (GB)
Title: Process for the pigment finishing of leather with benzanthronylaminoanthraquinones
IPC: D06P3/32
Filed: 1958-08-18
Abstract: An aqueous pigment dispersion for use in the production of a pigment finish on leather contains as essential ingredients:-(1) one or more pigment dyestuffs comprising the condensation products of halogenobenzanthrones with aminoanthraquinones, if desired, after-treated with acid condensing agents; (2) one or more film-forming protective colloids, such as ammonium, alkali metal or amine caseinates, albumens, shellac, polyacrylonitrile or a polyacrylic acid ester; (3) one or more film-softening anionic or non-ionic dispersing agents, such as soaps formed in situ from olein, or a castor oil fatty acid, and borax; sulphonated or sulphated fatty alcohols; alkyaryl-sulphonates; sulphoricinates; polyethylene glycols or the polyglycol ethers of fatty alcohols or alkylphenols; (4) one or more waxes, such as carnauba, candelilla or an unbleached mortan wax and (5) one or more phenols, such as phenol itself, cresols or halogenated phenols or cresols.  The pigment dispersion may also contain iron oxide, titanium dioxide, lampblack or a mixture of titanium dioxide with lampblack or another organic shading pigment. In examples, other additions to the aqueous pigment dispersion are pine oil, ammonium bichromate, linseed oil, shellac and glycerine. Specifications 733,461 and 743,509 are referred to.ALSO:An aqueous pigment dispersion for use in the production of a pigment finish on leather contains as essential ingredients:- (1) one or more pigment dyestuffs comprising the condensation products of halogenobenzanthrones with aminoanthraquinones, if desired, after-treated with acid condensing agents; (2) one or more film-forming protective colloids, such as ammonium, alkali metal or amine caseinates, albumens, shellac, polyacrylonitrile or a polyacrylic acid ester; (3) one or more film-softening anionic or non-ionic dispersing agents, such as soaps formed in situ from olein, or a castor oil fatty acid, and borax; sulphonated or sulphated fatty alcohols; alkyaryl-sulphonates; sulphoricinates; polyethylene glycols or the polyglycol ethers of fatty alcohols or alkylphenols; (4) one or more waxes, such as carnauba, candelilla or an unbleached montan wax and (5) one or more phenols, such as phenol itself, cresols or halogenated phenols or cresols.  The pigment dispersion may also contain iron oxide, titanium dioxide, lampblack or a mixture of titanium dioxide with lampblack or another organic shading pigment. In examples, other additions to the aqueous pigment dispersion are pine oil, ammonium bichromate, linseed oil, shellac and glycerine. Specifications 733,461 and 743,509 are referred to.ALSO:An aqueous pigment dispersion for use in the production of a pigment finish on leather contains as essential ingredients:- (1) one or more pigment dyestuffs comprising the condensation products of halogenobenzanthrones with aminoanthraquinones, if desired, after-treated with acid condensing agents; (2) one or more film-forming protective colloids, such as ammonium, alkali metal or amine caseinates, albumens, shellac, polyacrylonitrile or a polyacrylic acid ester; (3) one or more filmsoftening anionic or non-ionic dispersing agents, such as soaps formed in situ from olein, or a castor oil fatty acid, and borax; sulphonated or sulphated fatty alcohols; alkyarylsulphonates; sulphoricinates; polyethylene glycols or the polyglycol ethers of fatty alcohols or alkylphenols; (4) one or more waxes, such as carnauba, candelilla or an unbleached montan wax and (5) one or more phenols, such as phenol itself, cresols or halogenated phenols or cresols.  The pigment dispersion may also contain iron oxide, titanium dioxide, lampblack or a mixture of titanium dioxide with lampblack or another organic shading pigment. In examples, other additions to the aqueous pigment dispersion are pine oil, ammonium bichromate, linseed oil, shellac and glycerine. Specifications 733,461 and 743,509 are referred to.