Multilayer Coating System
First Claim
1. A multilayer coating system comprising at least one layer a) comprising a coating composition a) comprising at least one isocyanate-functional compound and at least one thiol-functional compound, and at least one layer b) comprising a non-aqueous coating composition b), at least one layer a) and at least one layer b) having at least one common layer boundary, characterized in that coating composition b) comprises an effective amount of a catalyst for the addition reaction of the at least one thiol-functional compound and the at least one isocyanate-functional compound.
2 Assignments
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Accused Products
Abstract
The invention relates to a multi-layer coating system comprising: at least one layer a) comprising a coating composition a) comprising at least one isocyanate-functional compound and at least one thiol-functional compound; and at least one layer b) comprising a non-aqueous coating composition b), wherein at least one layer a) and at least one layer b) have at least one common layer boundary, and wherein coating composition b) comprises all effective amount of a catalyst for the addition reaction of tile at least one thiol-functional compound and the at least one isocyanate-functional compound.
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Citations
21 Claims
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1. A multilayer coating system comprising
at least one layer a) comprising a coating composition a) comprising at least one isocyanate-functional compound and at least one thiol-functional compound, and at least one layer b) comprising a non-aqueous coating composition b), at least one layer a) and at least one layer b) having at least one common layer boundary, characterized in that coating composition b) comprises an effective amount of a catalyst for the addition reaction of the at least one thiol-functional compound and the at least one isocyanate-functional compound.
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13. A multilayer coating system comprising
at least one layer a) comprising a coating composition a) comprising at least one isocyanate-functional compound and at least one thiol-functional compound, and at least one layer b) comprising a non-aqueous coating composition b), at least one layer a) and at least one layer b) having at least one conunon layer boundary, characterized in that coating composition b) comprises an effective amount of at least one component of a co-catalyst comprising a phosphine component and a Michael acceptor component, and the other of phosphine component and Michael acceptor component is present in coating composition a).
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17. A process of preparing a multilayer coating system comprising the steps of
i. applying a layer b) of a non-aqueous coating composition b) comprising an effective amount of a catalyst for the addition reaction of a thiol-functional compound and an isocyanate-functional compound to a substrate, ii. prior to or subsequent to the application of layer b) applying a layer a) of a coating composition a) comprising at least one isocyanate-functional compound and at least one thiol-functional compound so that layer a) and layer b) have at least one common layer boundary, and iii. curing layer a) at room temperature or elevated temperature.
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19. A method of reducing the strike-in effect in a multilayer coating system comprising applying a clear coat composition a) comprising at least one isocyanate-functional compound and at least one thiol-functional compound on top of a base coat layer b) prepared from a non-aqueous base coat composition b) comprising an effective amount of a catalyst for the addition reaction of the at least one thiol-functional compound and the at least one isocyanate-functional compound.
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20. A kit of parts for the preparation of a non-aqueous base coat composition comprising a toner module comprising at least one resin and at least one colour and/or effect imparting pigment, a connector module comprising at least one resin compatible with the resin of the toner module, and a reducer module essentially free of resins and pigments, wherein at least one of the reducer module and the connector module comprises an effective amount of a catalyst for the addition reaction of a thiol-functional compound and an isocyanate-flnctional compound.
Specification