摘要:
A novel assistant mixture containing at least (A) an acid ester, or a salt thereof, of a polyadduct of propylene oxide with a polyfunctional aliphatic amino or hydroxy compound which contains 2 to 9, and preferably 2 to 6, carbon atoms and has at least one amino or hydroxyl group capable of entering into an addition reaction; (B) an acid ester, or a salt thereof, of a polyadduct of an alkylene oxide with a phenol containing at least one alkyl, benzyl or phenyl group and (C) an aliphatic ester, containing at least 6 carbon atoms, of a mono- or di-carboxylic acid and which can be used in the fluorescent or optically brightening or preferably in the dyeing of polyester fibre materials in order to increase the rate of migration of fluorescent or optical brighteners or of disperse dyes.
摘要:
Aqueous solutions of synthetic tanning agents comprising(A) a lithium salt of a synthetic, anionic aromatic tanning agent or the anionic non-condensed precursor thereof, and, as optional components,(B) a water-soluble chromium, aluminum, iron or zirconium salt or a mixture thereof, and(C) an alkali metal salt of ethylenediaminetetraacetic acid or of a pyrophosphateare prepared by mixing an aqueous solution of component (A) and optional component (C) with component (B), which may also be in the form of an aqueous solution, and are used as tanning agents for tanning bides or for retanning leather of all kinds. The lithium salts used as component (A) are novel and can be used as stain blockers for polyamide fibres or for enhancing the wetfastness properties of dyeings on polyamide fibres.
摘要:
Aqueous compositions derived from(A) a reaction product of a phenol and e.g. oleum in a molar ratio (phenol):(SO.sub.3) being (1):(1.1-2.2),(B) a water soluble, lower alkylamine or lower alkanolamine, a lower alkylenediamine, a poly-dialkylenepolyamine having 3 to 5 N-atoms or a heterocyclic amine,(C) a water soluble chromium, aluminium, iron or zirconium tanning salt or mixtures thereof and optionally,(D) an alkali metal salt of ethylenediaminetetraacetic acid or of a pyrophosphateare prepared by admixing an aqueous solution of component (A) and optionally (D) first with component (B) and subsequently with component (C) which may optionally be present in the form of an aqueous solution and are used as tanning agent for tanning pelts or retanning all types of leather.
摘要:
An aqueous composition for the pretanning of hide pelts or for the retanning of leather comprises (A) an aliphatic dialdehyde containing 2 to 8 carbon atoms, (B) an anionic aromatic tanning agent, (C) water and, if desired, (D) an acid. The leather tanned or pretanned with this aqueous composition exhibits a good degree of whiteness and has a high shrinkage temperature.
摘要:
A process is disclosed for obtaining coating compositions of improved whiteness for coating paper or cardboard using fluorescent whitening agents of the bis-triazinylaminostilbene-2,2'-disulfonic acid series, which process comprises adding to the coating compositions, in addition to the respective fluorescent whitening agent, an acid phosphoric acid ester of an oxyalkylated fatty amine of the formula ##STR1## or an alkali metal salt, ammonium salt or amine salt thereof, wherein R is an aliphatic hydrocarbon radical of 8 to 22 carbon atoms, Y.sub.1 and Y.sub.2 are both hydrogen, or one of Y.sub.1 and Y.sub.2 is hydrogen and the other is methyl, X is the acid radical of phosphoric acid, the acid hydrogen atoms of which radical can be replaced by alkali metal ions, ammonium ions or amine salt ions, and m and n are integers, the sum of which is 2 to 30. To the coating compositions can also be added organic solubilizers, non-ionic or anionic surfactants and/or polar organic compounds. Coating compositions which contain the above fluorescent whitening agents and assistants are also disclosed.
摘要:
A process for pickling raw hides, which comprises treating a delimed raw hide with an aqueous liquor that comprises a reaction product of phenol and a sulfonating agent, the molar ratio of (phenol):(SO.sub.3) being (1):(1.1-2.2), and which is free from neutral salts. The raw hides obtainable by the novel process are suitable for further processing by all conventional tanning methods.
摘要:
A process for pickling and pretanning raw hides which comprises (I), pickling a raw hide in an aqueous liquor A which is devoid of salts and contains (a) a reaction product of phenol and a sulfonating agent, the molar ratio of (phenol):(SO.sub.3) being (1):(1.1-2.2), and (II), pretanning the pickled raw hide in the same bath by addition of an aqueous formulation B comprising (b) a reductive saccharide having a dextrose equivalent of 10 to 100, and (c) an aliphatic dialdehyde containing 2 to 8 carbon atoms. The combined one-bath pickling/pretanning process makes it possible to prepare, in treatment baths free from neutral salts and heavy metals, readily shaveable wet white leathers that are suitable for further processing by all conventional tanning methods.
摘要:
The invention relates to oligomers containing structural units of the formulae ##STR1## wherein X.sub.1 is --CN, --COOR.sub.1, --OOCR.sub.2 or --CONHR.sub.3, Y.sub.1 is --COOH or --COOM.sub.2, Y.sub.2 is --CONH.sub.2, --CH.sub.2 OH, --OCH.sub.3 or --OC.sub.2 H.sub.5, each of Z.sub.1, Z.sub.2 and Z.sub.3 is hydrogen, methyl or ethyl, each of M.sub.1 and M.sub.2 is an amine cation, an ammonium cation or an alkali metal cation, and each of R.sub.1, R.sub.2 and R.sub.3 is C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.8 -hydroxyalkyl or alkoxyalkyl containing altogether at most 8 carbon atoms, fatliquoring the treated leather and drying it, and, if appropriate, additionally dyeing said treated leather before or after it has been fatliquored.These oligomers are suitable for use as tanning agents in a process for retanning chrome-tanned leather. The oligomers are prepared by copolymerizing comonomers of the acrylic acid series corresponding to the structural units of the indicated formulae, in the presence of sulfite or hydrogen sulfites of the formulae SO.sub.3 (M).sub.2 or HSO.sub.3 M, and have an average molecular weight of at most 14,000.
摘要:
A composition for the treatment of leather and furs, containing (A) an anionic aromatic syntan and (B) a polymer and/or copolymer of an unsaturated C.sub.3 -C.sub.5 mono- or dicarboxylic acid and/or hydroxy compounds thereof, a process for the production of wet-white leather and furs and the use of the composition for the said production are described.