Coating method, method for improving the scrub resistance and the adhesion to a substrate, lowering the minimum film formation temperature
申请人:ROHM AND HAAS COMPANY
公开号:EP1234840A2
公开(公告)日:2002-08-28
A method for providing a coated substrate including: forming an aqueous coating composition including an aqueous emulsion polymer, the polymer having a glass transition temperature (Tg) from -60 °C to 80 °C, formed by the free radical polymerization of at least one ethylenically unsaturated nonionic acrylic monomer, 0.1-50%, by weight based on the total weight of the polymer, ethylenically unsaturated aldehyde reactive group-containing monomer, and 0-7.5%, by weight based on the total weight of the polymer, ethylenically unsaturated acid monomer in the presence of 0.01-1.0 %, by weight based on the total weight of the polymer, t-alkyl hydroperoxide, t-alkyl peroxide, or t-alkyl perester wherein the t-alkyl group includes at least 5 Carbon atoms; applying the aqueous coating composition to the substrate; and drying, or allowing to dry, the aqueous composition is provided. Also provided are a method for improving the scrub resistance of a coating, a method for lowering the minimum film formation temperature of an aqueous coating composition, and a method for improving the adhesion of a coating to a substrate.
一种提供涂层基材的方法,包括:形成包括水性乳液聚合物的水性涂层组合物,该聚合物的玻璃化转变温度(Tg)为-60 °C至80 °C,由至少一种乙烯基不饱和非离子丙烯酸单体、0.1-50%(重量百分比)含乙烯基不饱和醛活性基团单体(基于聚合物总重量)和0-7.5%(以聚合物总重量为基准)的乙烯基不饱和酸单体,其中t-烷基包括至少5个碳原子;将水性涂料组合物涂到基材上;以及干燥或使水性组合物干燥。还提供了一种改善涂层耐擦洗性的方法、一种降低水性涂层组合物最低成膜温度的方法和一种改善涂层与底材附着力的方法。