| 摘要 |
<p>Use of varnish to form a solid coating, on a surface of the support, to protect the support against graffiti, is claimed, comprises 10-50 wt. % of a alkyd resin original aqueous emulsion having: molecular weight of 3000-100000, preferably 3000 and 10000 g/mol; polydispersity index of 1-20, preferably 5-15; an oil length of 20-60%; and acid number of 5-35, preferably 5-15, and optionally additives, fillers and quantum salts of water. Independent claims are included for: (1) use of a release agent comprising a nonionic surfactant and having a pH of 3-6 for cleaning or removing the solid coating; (2) protecting a surface of the support against graffiti by forming the solid coating comprising applying the varnish on the surface of the support and then drying the varnish to form a solid coating; (3) cleaning a treated support comprising cleaning the surface of the solid coating with a release agent and then rinsing the support with water; and (4) a kit comprising the varnish and the release agent.</p> |
