Abstract:
This invention relates to a multilayer coating system derived from Titanium dioxide free aqueous coating compositions. The multilayer coating system comprises at least two layers including a layer of base coating which provides good hiding function for substrates and a second layer of clear top coating which provides surface protection functions for the coating system. The base coating composition comprises an opaque (co)polymer having at least one void per (co)polymer particle. The top coating composition comprises a duller (co)polymer chosen from a multi-stage (co)polymer, a single stage crosslinked (co)polymer, and mixtures thereof.
Abstract:
A compact coating system comprises a UV-blocking coating composition, a basecoat composition, a clearcoat composition, and a monocoat topcoat composition, wherein: (a) each of the UV-blocking coating composition, the basecoat coating composition, and the monocoat coating composition comprises from about 0.1 to about 70%, based on total binder, of a first binder resin and (b) each of the monocoat coating composition and the clearcoat coating composition comprises from about 0.1 to about 50%, based on total binder, of a second binder resin. A method of coating automotive vehicle bodies includes applying the UV-blocking coating composition, the basecoat coating composition, and the clearcoat coating composition to a first vehicle body or part in a paint shop and applying the UV-blocking coating composition and the monocoat topcoat coating composition to a second vehicle body or part in the paint shop, wherein the monocoat coating composition is applied in a spraybooth where at least the clearcoat coating composition is also applied.
Abstract:
Electro-deposition-coated steel is top coated with a flexible coating formed of a polyester having --OH functionality, a polyacrylate having --OH functionality and melamine-formaldehyde resin to provide substantially a stoichiometric amount of reactive sites relative to the total amount of --OH functionality of the polyester and the polyacrylate. The flexible coatings exhibit superior chip and scratch resistance relative to rigid coatings of the type conventionally used in the automotive industry.
Abstract:
A fluorine resin having relatively high melting point such as polytetrafluoroethylene and tetrafluoroethylene-perfluoroalkylvinylether copolymer resins is added to a polyester having the double bond of a polyisocyanate or dibasic acid with a polyhydric alcohol followed by stirring, and a coat of the resulting stirred mixture is applied to a plastic product or the like, whereby the fluorine resin is firmly held on the coated surface, and a film of the fluorine resin is formed on the coated surface.
Abstract:
An improved process for forming a multilayer finish on a substrate by applying a layer of a waterborne basecoating composition to the substrate, at least partially drying the coating, applying a layer of a solvent based high solids clear coating to the basecoating and curing the coatings; the improvement that is used therewith is as follows:A. a waterborne basecoating composition that has a film forming binder of an acrylic polymer neutralized with ammonia, a primary amine or a secondary amine without the presence of a tertiary amine a water dispersible or water dilutable alkylated melamine formaldehyde resin and the composition contains pigments in a pigment to binder weight ratio of about 0.5/100 to 200/100;B. a high solids solvent based clear coating composition having a film forming binder of an acrylic polymer, a polyester or a polyesterurethane and an alkylated melamine formaldehyde crosslinking agent and about 0.1-5% by weight, based on the weight of the binder, of a strong acid catalyst;wherein the basecoating composition and the clear coating composition are cured at about 100.degree.-180.degree. C. to form a glossy wrinkle free finish having an automotive quality appearance.
Abstract:
A method for coating a metal surface includes heating an untreated metal surface to a temperature of about 40.degree. C. to 250.degree. C. and spraying a coating composition onto the hot untreated metal surface, while continuously moving the metal surface, so that a corrosion resistant coating is formed on the surface, the coating composition having a pH of 0.5 to 1.5 and containing; (a) 20 to 40% by weight acrylic organic polymer in aqueous dispersion; (b) 1 to 5% by weight chromium in a soluble form and selected from the group of hexavalent chromium and mixtures of hexavalent and trivalent chromium wherein the trivalent is about 0.1 to 20% by weight of the total chromium in the mixture; (c) 1.5 to 4% by weight phosphoric acid; and (d) 0.1 to 1.5% by weight organic reducing agent.
Abstract:
Some embodiments of the present disclosure relate to a method comprising: obtaining a base formulation, obtaining an activator formulation, mixing the base formulation with the activator formulation, so as to result in a liquid applied roofing formulation, applying the liquid applied roofing formulation to at least one steep slope roof substrate, and solidifying the formulation, so as to form at least one coating layer on the at least one steep slope roof substrate. Some embodiments of the present disclosure relate to a liquid applied roofing formulation comprising a first part and a second part. In some embodiments, the first part comprises the base formulation and the second part comprises the activator formulation.
Abstract:
A multi-layer coating system includes: (a) a first basecoat layer formed from a first coating composition including a free polyisocyanate and hydroxyl functional polymeric core-shell particles; (b) a second basecoat layer applied over at least a portion of the first basecoat layer, the second basecoat layer formed from a second coating composition including carboxylic acid functional polymeric core-shell particles; and (c) a topcoat layer applied over at least a portion of the second basecoat layer, the topcoat layer formed from a coating composition including least one free polyisocyanate having a weight average molecular weight of less than 600 g/mol and at least one film-forming resin in which an amount of free polyisocyanate having a weight average molecular weight of less than 600 g/mol is greater than 5 weight %, based on the total resin solids of the coating composition that forms the topcoat layer.
Abstract:
A method includes a step of applying an aqueous 2-package type first colored paint to form an uncured first colored coating film; a step of applying an aqueous 1-package type second colored paint to form an uncured second colored coating film; a step of applying a solvent-based 2-package type clear paint to form an uncured clear coating film; and a step of heating the uncured first colored coating film, the uncured second colored coating film and the uncured clear coating film to 75 to 100° C. to simultaneously cure these films. The solvent-based 2-package type clear paint contains a hydroxyl group-containing acrylic resin and a polyisocyanate compound in a ratio of 1.5 to 2.0 equivalents of isocyanate groups in the polyisocyanate compound relative to 1 equivalent of hydroxyl groups in the hydroxyl group-containing acrylic resin.
Abstract:
Described herein is a method for producing a multicoat paint system by producing a basecoat or a plurality of directly successive basecoats directly on a substrate coated with a first coat, producing a clearcoat directly on the one or the topmost of the plurality of basecoats, and subsequently jointly curing the one or the plurality of basecoats and the clearcoat. At least one of the basecoat materials is admixed, directly before application, either with an aqueous dispersion (D1) including a polyamide (PA) having an acid number of 15 to 60 mg KOH/g or with an aqueous dispersion (D2) including a polyamide (PA) and an amide wax (AW).