LOW TEMPERATURE CURE COATING FORMED VIA POLARITY-FACILITATED CATALYST MIGRATION BETWEEN LAYERS IN A DOUBLE LAYER CURING MECHANISM

• Main Authors: TURLEY KEVIN MICHAEL, HARLOW LISA JEAN, MICHEL KRISTIN, DECEMBER TIMOTHY S, CLARK TIMOTHY, FA KEQING, OZWALD ADAM, CAMPBELL DONALD H
• Format: Patent
• Language: Chinese; English
• Published: 31.03.2020
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; USE OF MATERIALS THEREFOR; WOODSTAINS

A double coating, curing method, cured coating, and kit are provided. A first layer of the double coating can be a first cure coating composition, which has a first hydroxy-functional resin, a first crosslinking agent, and a non-polar catalyst. A second layer of a second cure coating composition can have a second hydroxy-functional resin, a second crosslinking agent, and a polar catalyst. The non-polar catalyst catalyzes crosslinking between the second hydroxy-functional resin and crosslinking agent, and not between the first hydroxy-functional resin and crosslinking agent. The polar catalystcatalyzes crosslinking between the first hydroxy-functional resin and crosslinking agent, and not between the second hydroxy-functional resin and crosslinking agent. The polarity of the catalysts canfacilitate catalyst migration from one layer to the other. The separate compositions can be shelf-stable and/or the curing can occur at low temperature. 本发明提供了一种双涂层、固化方法、固化涂层和成套包装。双涂层的第一层可为第一固化涂料组合物，其具有第一羟基官能树脂、第一交联剂和非极性催化剂。第二