| 摘要 |
FIELD: construction. ^ SUBSTANCE: treatment facility is described, which facilitates removal of paint from a building material and is a beta-dicarbonyl product, selected from the following: 5-methyl-1-phenylhexane-1,3-dion, methane octanoyl benzol, methane heptanoyl benzoyl, methane dibenzoyl and/or calcium or zinc acetyl cetonate. Also the method is described to process a building material, including a stage to apply the specified agent onto the material surface, and a treated building material. ^ EFFECT: efficient removal of coatings or dirt. ^ 9 cl, 6 dwg, 30 ex |
