Abstract: The invention relates to a process for dyeing cellulose fibres such as cotton fibres, comprising successively the steps of (a) bleaching the cellulose fibres with an alkaline bath containing aqueous hydrogen peroxide; (b) neutralizing the residual hydrogen peroxide with a reducing agent; and (c) dyeing the cellulose fibres with a reactive dye sensitive to said reducing agent, wherein, after stage (b) and at the latest at the beginning stage (c), any residual agent is neutralized by a quantity of an alkali or alkaline-earth metal halogenite sufficient to neutralize it, whereby it is possible not to perform any intermediate rinsing between stages (a) and (c).

Abstract: The invention concerns low molecular weight copolymers of acrylic acid or at least partially salified acrylic acid and acrylamide, their process of manufacture and their use. These copolymers may be used to prevent the formation of deposits on the walls of oil or geothermal equipment from aqueous systems containing dissolved salts. The copolymer is characterized in that it comprises recurrent units deriving from acrylic acid and acrylamide in a proportion by weight from 95:5 to 25:75. Furthermore, the distribution of the molecular weights of the copolymer, as determined by exclusion analytic chromatography, is such that at least 60% of the weight molecular weights are lower than 500.

Abstract: The invention relates to the chemistry of polymers and to cross-linked carboxylic copolymers obtained by copolymerization of an unsaturated carboxylic monomer, a cross-linking agent, an acrylic or methacrylic acid ester with a polyalkylene glycol and, optionally, an alkyl acrylate or methacrylate. Utilization as thickeners, particularly of media containing dissolved salts.

Abstract: A process is disclosed for fixing direct and reactive dyestuffs on cellulosic fibers. According to the process, a zirconium salt is added to a conventional fixating agent, especially the condensation product of formaldehyde with a compound containing as part of the molecule at least one amino group.

Abstract: A catalyst and accelerator for an epoxy system which consists of a halogeisphenate of a catalytically active tertiary amine and which is obtained in a solid form practically water insoluble and odor free but which nevertheless possess the catalytic activity of the tertiary amine. The application describes the proportion of the catalyst by reacting an aqueous suspension of the halogenobisphenol with the tertiary amine, the proportion of epoxy resin systems containing the catalyst and the epoxy resin systems thus formed.

Abstract: The simultaneous oxidation and fixation are effected in the presence of a stable aqueous composition comprising an oxidation agent selected among the iodates and bromates of alkaline metals and a fixation agent selected among thermo-hardenable cationic resins.

Abstract: Oxidation of dyeings with reduced vat and sulfur dyes, is accomplished in an improved manner with sodium chlorite under acid conditions of preferably pH 4.5-6 at 30.degree.-65.degree. C. in the presence of chelating agents which prevent the release of chlorine or chlorine compounds, such chelating agents being selected from derivatives of amino carboxylic acids, such as EDTA, and hydroxyalkane phosphonic acids.

Abstract: A plaster composition is disclosed having a long setting time, which composition comprises a gypsum-based plaster and an effective amount of a setting retarding agent comprising a polymer having a molecular weight of less than 1000 of the formula: ##STR1## wherein R.sub.1 is hydrogen or methyl,R.sub.2 is COOH, COOR.sub.4, wherein R.sub.4 is C.sub.1 to C.sub.4 alkyl, CONH.sub.2 or CN,R.sub.3 is hydrogen or methyl,X is a sodium, potassium, lithium, calcium, magnesium, or ammonium ion, andx and y designate the molar ratio of the two monomers forming the setting retarding agent of the formula I.

Abstract: Dyeing with a dyestuff containing a metal or from a bath in the presence of one or more metallic elements, especially alkaline-earth or heavy metals, is carried out in the presence of a sequestrating agent or sequestrant. According to the invention the sequestrant is a derivative of a phosphonic acid having no effect on the physical-chemical characteristics of the dyestuff which is used and is preferably a salt of a hydroxy-lower-alkane-phosphonic acid.

Abstract: Paper is coated or sized with a composition which includes in addition to the used paper-treating agents one or more cationic compounds and a dispersion of a polymer soluble in an alkaline medium and consisting of an alkali metal salt or alkaline earth salt of an unsaturated carboxylic acid, or a copolymer obtained by polymerization or an unsaturated carboxylic acid with acrylic or methacrylic acid esters.

Abstract: Gypsum and anhydrite plaster is improved by adding at least one alkylene diphosphonic acid or water soluble salt thereof, represented by the following formula: ##STR1## wherein X is hydrogen or lower alkyl of 1-4 carbons, Y is hydrogen, hydroxy or lower alkyl of 1-4 carbons, and n is 1-10. The plaster is found to have an increased finishing time, while the quantity of water necessary is reduced and the mechanical strength of the finished plaster is improved.

Abstract: Cationic resins soluble in water and stable in solution, based upon melamine and formaldehyde, primary or secondary aliphatic amines, alkanolamines or a polyamine are prepared by reacting melamine with formaldehyde in a methylolation reaction in methanol in the presence of one or more of the aforementioned amines by heating for a period of fifteen minutes to two hours at an alkaline pH of 7.5 to 10 at a temperature of 60.degree. to 85.degree. C. The methylation-condensation reaction which follows is carried out at a pH of 5 to 6, preferably 5.4 to 5.7 until a viscosity is obtained which has a minimum of seventeen seconds measured at 20.degree. C. by an AFNOR No. 6 consistometric head. The methylation reaction is then terminated by the addition of aqueous formaldehyde and condensation is carried out for thirty minutes to two hours at 60.degree. to 90.degree. C. and a pH of 5.5 to 7, preferably a pH of 6 to 6.5.

Abstract: Textile materials are made with a binder to which is added an alkylene-urethane thermosensitive copolymer of the formula:(O.dbd.C.dbd.N).sub.x --R--[--NH--CO--O--(C.sub.n H.sub.2n --O).sub.p --R'].sub.ywhereinR is an aliphatic or aromatic moiety which contains a biuret, urethane or isocyanate group;R' is hydrogen, C.sub.1 to C.sub.8 straight or branched chain alkyl, aryl or alkylaryl;X ranges from 0 to 1 inclusive;Y is greater than 2;N has a value of 1 to 4 inclusive; andP is greater than 5 and the binder is controlled to have a pH of less than 5,5 at activation so that the textile material is antistatic.

Abstract: A disperse dye, vat dye or phthalocyanine dye and a process for the application thereof are disclosed, said dye comprising an effective amount of an antimigration agent of the formula:(O.dbd. C.dbd. N)--R--NH--CO--O--C.sub.n H.sub.2n O.sub.p R'].sub.ywhereinR is an aliphatic or aromatic moiety containing at least one biuret, urethane or isocyanate group;R' is selected from the group which consists of hydrogen,C.sub.1 to C.sub.8 straight or branched chain alkyl, aryl or alkylaryl;X is 0 to 1;Y is greater than 2;N is 2 to 4; andP is at least 5.

Abstract: A sodium chlorite bath for the bleaching of textile fibers, e.g. cotton, is activated by one or more bisulfite derivatives of an organic-reducing compound having one or more aldehyde or ketone functional groups and which are capable of forming bisulfitic combination addition compounds with an alkali bisulfite. Such activators have been found to be effective in bringing about the progressive decomposition of the sodium chlorite of the bath and hence controlled bleaching at relatively low temperatures of the sodium chlorite bath.

Abstract: Textile fabrics are dyed with a substance comprising a pigment or colorant and a latex serving as a binding agent or color agglutinant which bonds the pigment to the fabric. The latex is rendered thermally sensitive and hence is thermally activatable by the introduction of an alkylene-oxide/urethane copolymer.

Abstract: A chelating agent of the formula: ##STR1## wherein R.sub.1 through R.sub.5 are each selected from the group which consists of hydrogen, methyl, ethyl and propyl;S.sub.1 and S.sub.2 are each selected from the group which consists of hydrogen, --CH.sub.2 CH.sub.2 OH and alkyl having 1 to 12 carbon atoms;n is a whole number 1 through 4;Z.sub.1 through Z.sub.8 are substituents each selected from the group which consists of alkyl, alkoxyl, carboxy, formyl, acyl, carboxy substituted by alkyl, carboxamido, hydroxyl, amino, nitro, halo, and sulfo;Y.sub.1 is selected from the group which consists of --COOM.sub.2 and --CN;Y.sub.2 is selected from the group which consists of --COOM.sub.3 and --CN; andM.sub.1 through M.sub.4 are selected from the group which consists of hydrogen, ion, an alkali metal ion, ammonium and ammonium substituted by alkyl 1 to 4 times.

Abstract: A cationic resin which is thermally settable or thermally hardenable, for use in improving the moisture resistance of cellulosic fibrous materials such as paper, is produced by reacting at least one dicarboxylic acid with a mixture of at least one polyamine and at least one dialkanolamine to produce a polyamide-polyester copolymer soluble in water and subsequently condensed with epichlorohydrin.

Abstract: A process for the dyeing or printing of textile materials wherein, to improve the color rendition or the ability of the textile material to absorb the dye, the textile material is treated with a propylepoxyammonium salt having the formula ##STR1## in which R', R.sup.n and R.sup.m are alkyl radicals, preferably lower alkyl containing 1 to 3 carbon atoms and X.sup.- is an anionic group selected from the sulfate, sulfonate, phosphate or halogenide (fluoride, chloride, bromide or iodide). The fabric is subjected to an elevated temperature (thermal treatment). To prevent yellowing of the textile material the latter is also treated with boric acid.

Abstract: Process for dyeing of cellulosic textile fibers which comprises treating the cellulosic fibers with the dye in a bath consisting at least in major part of an organic solvent and in the presence of a quaternary ammonium compound of the formula ##EQU1## wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different and are each C.sub.1 to C.sub.3 alkyl and X.sup.- is an anion selected from the group which consists of the halogenides, sulphate, nitrate or the like. The quaternary ammonium salt can be added to the dyeing bath or can be used to treat the fibers in a dye-free bath prior to the dyeing step.