Method For Cleaning Surfaces

• Main Authors: FECHTENKOTTER ANDREAS, STEINBRENNER ULRICH, EHRENSTEIN MORITZ, MICHL KATHRIN, ZIEMER ANTJE, MOCK CHRISTOF, SCHORNICK GUNNAR, WEIDL CHRISTIAN HUBERT, FRENZEL STEFAN
• Format: Patent
• Language: English
• Published: 26.06.2008
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CLEANING; CLEANING IN GENERAL; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; PREVENTION OF FOULING IN GENERAL; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING

A method for cleaning surfaces using aminoplast foam pieces produced from (a) open-cell aminoplast foams having a density in the range from 5 to 500 kg/m3 and a mean pore diameter in the range from 1 mum to 1 mm or (b) open-cell aminoplast foams having a density in the range from 5 to 500 kg/m3 and a mean pore diameter in the range from 1 mum to 1 mm, which have been treated (b1) with an aqueous formulation of at least one compound (b-1) having at least one hemiaminal or aminal group per molecule or at least one copolymer which comprises, incorporated in the form of polymerized units, at least one comonomer containing OH groups or beta-dicarbonyl groups or epoxide groups, or (b2) with at least one polymer (c-1) which is solid at room temperature, contains carboxyl groups and/or carboxylic ester groups and has a molecular weight Mn in the range from 1000 to 1 000 000 g/mol, the aminoplast foam pieces used having an average diameter in the range from 0.1 mm to 50 mm.