USE OF AN AQUEOUS EMULSION OXIDATIVY DRYING POLYETHYLENE GLYCOL-MODIFIED ALKYD RESIN AS A PRESSURED AEROSOLIC PAINT COMPOSITION.

摘要

1. Use of an aqueous emulsion of oxidatively drying alkyd resins, modified with polyethylene glycol, as a pressurised aerosol paint composition. 2.1 It has hitherto not been possible to use just any water-thinnable binder for aerosol spray purposes. The invention provides the use of a non-foaming aqueous aerosol paint composition which is free of precipitates. 2.2 An aqueous emulsion of drying alkyd resins which should be modified with polyethylene glycol is used as aerosol paint composition. The modified alkyd resins are obtainable by reacting from 25 to 50% by weight of a copolymer of unsaturated fatty acids, methacrylic acid and vinylidene compounds with from 5 to 15% by weight of polyethylene glycol, from 35 to 70% by weight of polyols, monocarboxylic acids and dicarboxylic acids, partially esterifying (II) from 30 to 50% by weight of the resulting product with from 50 to 70% by weight of an alkyd resin, and emulsifying (III) the resulting combination with neutralisation of the acid groups by adding not more than 20% by weight of organic auxiliary solvents in water. 2.3 Preparation of air-drying films using aqueous aeosol paint compositions.