Abstract:
The present invention is an adhesion promoter, a coating composition containing the adhesion promoter and a method for preparing the adhesion promoter and coating. The adhesion promoter of the present invention is an olefin based polymer prepared by reacting a hydroxy functional olefin polymer with a compound reactive with hydroxy functionality to provide functionality on the olefin polymer that is inert to reaction with a principal resin or crosslinking resin in a coating composition.
Abstract:
Disclosed is a carbamate functional silica. Methods for making the disclosed functional silicas and coating compositions comprising the same are also provided.
Abstract:
Disclosed is a method of making an environmentally durable material, the method requiring providing a material comprising at least one functional group Fc, and subjecting the material to a free radical source such that substantially all functional groups Fc are eliminated but the material is not polymerized. In one embodiment, the functional group Fc is at least one of a nonaromatic carbon-carbon double bond, a hydrogen atom alpha to an aromatic ring, a hydrogen atom alpha to a carbon-carbon double bond, or a hydrogen atom attached to a tertiary substituted carbon. In another embodiment, functional group Fc is present in the material as a contaminant. In one exemplary embodiment, the material comprises from 0.05 to less than 15 % by weight of functional group Fc, based on the total weight of the material.
Abstract:
A clearcoat coating composition comprises a vinyl or acrylic polymeric resin prepared by reacting a functional group on a vinyl or acrylic polymer, wherein the polymer has a glass transition temperature (Tg) ≥ 40°C as calculated by the Fox equation, with a reactant that provides a curable functional group that is separated from the polymer backbone by at least two alkylene, cycloalkylene, or arylene groups of at least two carbons each long.
Abstract:
A composition comprising a binder polymer with a first functional group that is reactive with a second functional group, a crosslinking agent with the second functional group, and a polymer additive with a third functional group that can react with the second functional group and may optionally contain additional functionality which does not react with the first or second functional group and wherein said polymer additive will concentrate more at a surface interface region of a cured film formed from the composition than in the bulk of the coating.
Abstract:
Disclosed is a method of making reduced VOC polymers and coating compositions containing polymers. Provided is a mixture (I) comprising a reactant mixture (a) of polymerizable components and a nonvolatile solvent (bnv) that (i) is not a crystalline solid at 25°C, (ii) is nonvolatile, (iii) comprises at least one functional group (F1) and (iv) is a fluid solid. Reactant mixture (a) is polymerized to provide a polymer (a'). At least one functional group (F1) of nonvolatile solvent (bnv) is reacted with one or more reactants (e) to obtain a nonvolatile solvent (b'nv) comprising at least two functional groups (F2). Obtained is a mixture (II) comprising polymer (a') in nonvolatile solvent (b'nv) comprising at least two functional groups (F2). The at least one functional group (F1) is substantially nonreactive: (1) with the components of reactive mixture (a), (2) under the polymerization conditions which polymerize reactant mixture (a), and (3) with polymer (a').
Abstract:
A multicoat coating system that does not contain a primer layer over an electrodeposition coating layer. Even in the absence of the primer layer, the electrodeposition coating layer is protected from ultraviolet light by a basecoat layer that contains a UV blocking composition comprising at least two of carbon black, iron oxide, titanium dioxide, and an aluminum pigment or mixtures of any these.
Abstract:
The coating composition of the invention includes a polymer, especially an acrylic polymer, having hydroxyl and/or primary carbamate functionality; water-miscible organic solvent; low hydrogen bonding oxygenated solvent; and water that is emulsified in the organic phase. The coating composition of the invention may be a clearcoat coating composition, preferably an automotive clearcoat coating composition. The invention further provides an article, such as an automotive vehicle, having a surface coated with a coating derived from the coating composition of the invention, particularly a composite coating having a basecoat layer and clearcoat layer, and a method of producing such coating on a substrate, particularly as a basecoat/clearcoat composite coating, with the coating composition of the invention preferably being at least the clearcoat of the composite coating. The coating composition of the invention provides especially low volatile organic content, with significant reductions of 25 % or more from comparable previous coating compositions.
Abstract:
A coating composition contains a carbamate-functional film-forming material, a carbinol-functional, nonlinear siloxane resin, and an aminoplast crosslinking agent. The composition provides excellent high-bake repair adhesion of a repair-coating layer over the initial coating.