摘要:
An aqueous adhesive dispersion comprising an adhesive polymer in dispersed form, an anionic or cationic polyelectrolyte, and optionally at least one polyalkylene glycol having a molar mass of 200 to 100,000 g/mol, and other additives; and a process for producing multilayered paper or a material using the aqueous adhesive dispersion.
摘要:
The invention relates to a process for the thermomechanical surface treatment of flat webs of material, particularly those made of paper and carton, and to agents for performing said process. According to the process of the invention, adhesion between the flat web of material and the surface of the tool used in thermomechanical surface treatment, e.g., a roll or a press, is reduced or prevented by using an abhesive agent, which contains dicarboxylic dialkyl esters and/or diisoalkyl esters of C.sub.2 -C.sub.12 dicarboxylic acids with C.sub.1 -C.sub.13 n- and/or iso-alkanols as component with abhesive effect. The abhesive agent is preferably employed as an oil-in-water emulsion and is either applied to the surface of the tool used in said thermomechanical treatment or is added to the impregnating fluid or the paper coating mass or the moistening water or the steam in pre-moistening, or is applied to the paper web after the impregnating unit or directly before the smoothing roll. A steam-volatile abhesive agent is preferably used which then is metered through the steam line for steam moistening.
摘要:
A process for producing fibrous materials for the manufacture of cellulose, paper or wood materials by using at least one dicarboxylic acid dialkyl ester and/or a copolymer of polyester-polyether and/or fatty acid polyol monopolyester, dipolyester, tripolyester and or higher polyester. Fibrous materials with an improved quality and higher yield are thus produced.
摘要:
The present invention relates to oil-in-water emulsions for the prevention of slime formation and for the reduction of microbial growth in water carrying systems. The emulsions comprise as component of the oil phase at least one of the following active substances:a saturated or unsaturated, open-chain normal or isomeric hydrocarbon having 8-30 carbon atoms.The emulsions have a proportion of the oil phase of 1 to 90 %-wt. and are used in an amount of 1 to 200 ppm and are free of toxic microbiocides.
摘要:
The present invention relates to the use of oil-in-water emulsions to clean machines and parts of plants in the production of pulp, paper, paper board, and cardboard and to prevent impurities of adhesives and adherent resins to those units.The emulsion comprises as component of the oil phase at least one of the following substances:1. a saturated or unsaturated, open-chain or cyclic, normal or isomeric hydrocarbon with 8-30 carbon atoms2. a saturated or unsaturated fatty alcohol, a saturated or unsaturated fatty acid, a fatty acid monoalkylester, a fatty acid amide or a fatty acid monoalkylamide of a saturated or unsaturated fatty acid, all of the compounds mentioned under 2. having 8 to 30 carbon atoms3. a mono- or polyester of a saturated or unsaturated, mono- or multivalent carboxylic acid with 2 to 30 carbon atoms and polyols, with the exception of polyethylene glycols4. a polyamide of saturated or unsaturated fatty acids with 8 to 30 carbon atoms and aliphatic polyamides with two to six nitrogen atoms5. an acyclic, preferably monocyclic and/or bicyclic terpene, in particular a terpene hydrocarbon and/or a terpene alcohol and/or6. a polyoxyalkylene compound based on alkylene oxides.