摘要:
Liquid coating compositions having improved mar and scratch resistance are disclosed. The coatings generally comprise one or more particles that have been modified to render the particles more surface active. The improved resistance is achieved without affecting the appearance or mechanical performance of the coatings. Methods for using the coatings, and the substrates coated therewith, are also disclosed.
摘要:
Coating compositions are provided which are formed from components comprising (a) at least one polysiloxane comprising at least one reactive functional group; (b) at least one reactant comprising at least one functional group that is reactive with at least one functional group selected from the at least one reactive functional group of the at least one polysiloxane and at least one functional group of at least one reactant; and (c) a plurality of particles, wherein each component is different, and wherein the at least one reactive functional group of the at least one polysiloxane and the at least one functional group of the at least one reactant are substantially nonreactive with the particles. A multi-component composite coating composition formed from a basecoat and a topcoat deposited from the curable coating composition also is provided. The multi-component composite coating compositions of the invention provide highly scratch resistant color-plus-clearcoatings capable of retaining scratch resistance after weathering.
摘要:
Coating compositions are provided which include a polysiloxane comprising at least one reactive functional group and at least one material comprising at least one reactive functional group. Also provided are multi-layer composite coatings formed from a basecoat deposited from a pigmented coating composition and a topcoat applied over the basecoat, the topcoat deposited from the aforementioned coating composition. A method for improving the scratch resistance of a coated substrate, as well as coated substrates also are provided. The compositions of the invention provide highly scratch resistant coatings, particularly highly scratch resistant color-plus-clearcoatings.
摘要:
Coating compositions are provided which are formed from components comprising (a) at least one polysiloxane comprising at least one reactive functional group; (b) at least one reactant comprising at least one functional group that is reactive with at least one functional group selected from the at least one reactive functional group of the at least one polysiloxane and at least one functional group of at least one reactant; and (c) a plurality of particles, wherein each component is different, and wherein the at least one reactive functional group of the at least one polysiloxane and the at least one functional group of the at least one reactant are substantially nonreactive with the particles. A multi-component composite coating composition formed from a basecoat and a topcoat deposited from the curable coating composition also is provided. The multi-component composite coating compositions of the invention provide highly scratch resistant color-plus-clearcoatings capable of retaining scratch resistance after weathering.
摘要:
Multi-component composite coating compositions are provided which comprise a base coat deposited from a pigmented film-forming composition and a transparent top coat applied over the base coat in which the transparent top coat is deposited from a film-forming composition comprising one ore more ungelled chain-extended organic polysiloxanes having reactive functional groups, and one or more curing agents having functional groups reactive with the functional groups of the polysiloxane. Additionally provided is a process for applying the multi-component composite coatings described above to a substrate. Substrates coated with the above-described multi-component composite coating compositions are also provided.
摘要:
The present invention is directed to a method producing bicyclic guanidine comprising heating a cyclic thiourea to a temperature ranging from ≧140° C. in a substantially non-hydrocarbon solvent to form the bicyclic guanidine.
摘要:
Compositions are provided which contain (a) one or more polysiloxanes comprising at least one reactive functional group; a plurality of particles; and optionally, one or more curing agents comprising at least one functional group that is reactive with any reactive functional group of polysiloxane (a). Additionally, a process for applying the multi-component composite coatings described above to a substrate and coated substrates are provided. A process for preparing the coating compositions also is provided. The multi-component composite coating compositions of the invention provide highly scratch resistant color-plus-clearcoatings capable of retaining scratch resistance after weathering.
摘要:
The present invention provides an improved multi-layer composite of two or more polymeric layers at least one of which is formed from a thermosetting composition. The composite includes at least a first polymeric layer formed on a substrate and a second polymeric layer over the first polymeric layer, wherein in the absence of a boron-containing compound, the first and second polymeric layers have poor interlayer adhesion. The improvement resides in the inclusion of at least one boron-containing compound in one or both of the first and second polymeric layers in an amount sufficient to improve the interlayer adhesion between the first and second polymeric layers. Also provided is an improved curable coating composition used to form a multi-layer composite coating of two or more cured coating layers, at least one of which is formed from the thermosetting composition. Related methods and coated substrates are also provided.
摘要:
Aqueous coating compositions which may be applied by conventional coating techniques as well as by electrodeposition are provided by reacting an epoxy-containing organic material with a compound containing a mercaptan group and at least one group hydrolyzable to a carboxyl group. Examples of such hydrolyzable groups include ester groups, amide groups and nitrile groups. The resultant product is then hydrolyzed and solubilized using hydrolyzing agents such as aqueous alkali metal hydroxides and aqueous solutions of various amines.
摘要:
Radiation curable coating compositions are disclosed. The radiation curable coating composition comprises a) an organic film-forming binder comprising (i) a urethane (meth)acrylate comprising the reaction product of reactants comprising a polyol and a polyisocyanate comprising at least two (meth)acrylate functional groups per molecule; and (ii) a highly functional (meth)acrylate; and b) a (meth)acrylate functional silsesquioxane dispersed in the binder. Also disclosed are related methods for coating a substrate, coated substrates and cured coatings formed from the radiation curable coating compositions.