Abstract: A sizing agent which contains from 1 to 60 parts, by weight, of a fixing and sizing accelerating agent and from 0 to 80 parts, by weight, of conventional auxiliaries per 10 parts by weight of hydrophobic, cellulose-reactive sizing materials, the fixing and sizing accelerating agent being a polymer composed of linear or branched carbon chains, to which primary, secondary or tertiary amino and/or quaternary ammonium groups are bound directly or by side chains exhibits a thorough and rapid sizing effect, in particular in the better sizing of paper.

Abstract: New aqueous sizes, in particular paper sizes, are made available which contain(a) ketene dimers of the formula ##STR1## in which R.sub.1 and R.sub.2 can be identical or different and represent hydrocarbon radicals having 6 to 30 carbon atoms,(b) amine-modified starch,(c) hydrophobic compound(s) which contain(s) one or more functional groups which are reactive towards OH groups within a pH range of 2 to 6, and(d) if desired further auxiliaries.

Abstract: New products having excellent sizing action, in particular on paper are obtained by reacting .alpha.,.beta.-unsaturated carboxylic acids or their reactive derivatives (such as, for example, esters or anhydrides) with amide-amines of higher carboxylic acids at temperatures above 120.degree. C.The new products are used in size formulations, preferably as aqueous alkaline and, in particular, aqueous ammoniacal, dispersions.

Abstract: Cationic sizing agents for paper in the form of an aqueous colloid-disperse solution having average particle diameters of from 15 to 200 nm are obtained by dissolving a water-soluble cationic, chemically uniformaly composed terpolymer compound of:(a) from 7 to 40% by weight of N,N-dimethylaminoethyl acrylate and/or methacrylate,(b) from 45 to 80% by weight of styrene, and(c) from 4 to 40% by weight of acrylonitrilein an aqueous medium, the total of components (a) to (c) always amounting to 100% by weight and at least 10% of the N,N-dimethylamino groups of the terpolymer being quaternized and the rest being protonated, and by emulsifying, in the presence of from 10 to 70% by weight, based on the following monomer mixture, of this emulsifier,(d) acrylonitrile or methacrylonitrile in quantities of from 5 to 95% by weight, with(e) C.sub.1 -C.sub.

Abstract: Aminoplastic resin dispersions which are stable to sedimentation are obtained by condensation of aldehydes with aminoplastic resin formers in an aqueous medium, in the presence of water-soluble compounds of the formulaR--X--(A--O).sub.m --B--NHCONH--Y].sub.nhaving the substituent meanings mentioned in the description. The condensation is preferably carried out in the presence of dyestuffs or optical brighteners which have groups capable of condensation. The dispersions obtained thereby are particularly suitable for whitening the coating compositions used in the paper industry, and for coating paper, wood, films and textile materials.

Abstract: Paper sizing agents in the form of an aqueous preparation of maleic acid anhydride copolymers of which the anhydride groups had been reacted either with organic or inorganic bases or with primary-tertiary diamines and the reaction products subsequently reacted with epichlorohydrin or with inorganic or organic acids to form salts, the copolymers being made up of polymerised units of(a) from 5 to 75%, by weight, of an aromatic vinyl compound;(b) from 10 to 75%, by weight, of acrylic and/or methacrylic acid C.sub.1 -C.sub.18 alkyl esters;(c) from 5 to 35%, by weight, of maleic acid anhydride;(d) from 0 to 25%, by weight, of other vinyl monomers; and(e) from 0.1 to 10%, by weight, based on the sum of monomers (a) to (d) (which amounts to 100%, by weight), of an unsaturated aldehyde or of an enol ether derived therefrom.The copolymers are produced by radical polymerisation preferably in the absence of solvents.

Abstract: Cationic azo dyestuffs of the general formula ##STR1## wherein X.sup.(+) denotes an ammonium group,m denotes 0 or 1,R.sub.1 denotes hydrogen, C.sub.1 - to C.sub.4 -alkyl, C.sub.1 - to C.sub.4 -alkoxy or halogen,R.sub.2 and R.sub.3 independently of one another denote hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 - to C.sub.4 -alkoxy or acylamino,Z denotes halogen or a radical of the formula ##STR2## R.sub.4 and R.sub.5 independently of one another denote hydrogen, or C.sub.1 - to C.sub.4 -alkyl, cyclohexyl, phenyl, benzyl or phenylethyl, it being possible for these radicals to be substituted by hydroxyl, C.sub.1 - to C.sub.4 -alkoxy, chlorine or cyano and for the cyclohexyl, phenyl, benzyl and phenylethyl radical additionally to be substituted by C.sub.1 - to C.sub.4 -alkyl, orR.sub.4 and R.sub.5, together with the nitrogen atom to which they are bonded, denote a 5- or 6-membered ring,A denotes an aryl radical andAn.sup.(-) denotes an anion,are suitable for dyeing synthetic and natural materials.