TWO STAGE CURE TWO COMPONENT COATING COMPOSITION CONTAINING HYDROXYL BUTYL ACRYLATE POLYMERS
摘要
The invention is directed to a two-stage cure coating composition comprising a two component composition of a binder and a crosslinking component; the binder comprises an acrylic polymer having a weight average molecular weight of 3,000 to 50,000 and hydroxyl moieties in the range of 7.0 to 40.0 weight percent, based on the weight of the acrylic polymer; wherein at least 40.0 weight percent of the hydroxyl moieties are provided by hydroxy butyl acrylate; and the crosslinking component comprises an organic polyisocyanate; and the first stage curing of a finish of the composition on a substrate forms a water spot free finish within 90 minutes of application and the composition has a pot life of less than a 2 second rise in Zahn cup viscosity in 150 minutes; and the invention also is directed to a method of producing a finish on a substrate utilizing the two component coating composition which comprises forming a two stage cure coating composition by mixing together the above described binder component and a cross-linking component; applying a layer of the coating composition over the substrate; first stage curing the layer on the substrate to a water spot free finish; and second stage curing the first stage cured layer on the substrate into a finish having excellent appearance and excellent physical properties.
申请公布号
WO2005012440(A2)
申请公布日期
2005.02.10
申请号
WO2004US24644
申请日期
2004.07.28
申请人
E.I. DUPONT DE NEMOURS AND COMPANY;LEWIN, LAURA, ANN;DEVLIN, BRIAN, PATRICK;PAQUET, DONALD, ALBERT, JR.;ADAMS, JAMES, LAMONTE