DISPERSIONES ACUOSAS DE DIMEROS DE ALQUILCETENO

• Main Authors: SCHMID, MARKUS, LORENZ, KLAUS, BROCKMEYER, ANDREAS, RIEBELING, ULRICH, HAMERS, CHRISTOPH
• Format: Patent
• Language: Spanish
• Published: 03.02.2010
• Subjects: IMPREGNATING OR COATING OF PAPER; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; PERFORMING OPERATIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; TEXTILES; TRANSPORTING; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G

Dispersiones acuosas de dímeros de alquilceteno, que contienen, al menos, un 15% en peso de un dímero de alquilceteno así como, al menos, un almidón catiónico soluble en agua, sulfato de aluminio y, al menos, un producto de condensación formado por el ácido naftalinsulfónico y el formaldehído o por el ácido lignosulfónico o respectivamente sus sales, caracterizadas porque las dispersiones contienen, referido respectivamente al dímero de alquilceteno, desde un 2 hasta un 50% en peso de sulfato de aluminio, conteniendo las dispersiones, además, entre un 0,1 y un 5% en peso de un ácido carboxílico saturado con 1 hasta 10 átomos de carbono, de ácido bencenosulfónico, de ácido ptoluenosulfónico y/o de un ácido mineral, con un contenido en sulfato de aluminio comprendido entre un 2 y un 15% en peso. Aqueous alkyl ketene dimer dispersions which comprise at least 15% by weight of an alkyl ketene dimer and at least one water-soluble cationic starch, aluminum sulfate and at least one condensate of naphthalenesulfonic acid and formaldehyde or lignin sulfonic acid or in each case salts thereof, the dispersions comprising, based in each case on alkyl ketene dimer, from 2 to 50% by weight of aluminum sulfate, and in which the dispersions additionally comprise from 0.1 to 5% by weight of a saturated carboxylic acid having 1 to 10 carbon atoms, benzenesulfonic acid, p-toluenesulfonic acid and/or a mineral acid at an aluminum sulfate content of from 2 to 15% by weight, and the use of the dispersions as engine size and surface size for paper and paper products.