Patent classifications
C09D5/4492
ELECTRODEPOSITABLE COATING COMPOSITION INCLUDING A PHYLLOSILICATE PIGMENT AND A DISPERSING AGENT
The present invention is directed towards an electrodepositable coating composition comprising a cationic electrodepositable binder; a phyllosilicate pigment; and a dispersing agent. Also disclosed are methods of making the electrodepositable coating composition, coatings derived therefrom, and substrates coated with the coatings derived from the electrodepositable coating composition.
ELECTRODEPOSITION COATING MATERIAL CONTAINING CATECHOL DERIVATIVES AS ANTICORROSION AGENTS
Described herein is an electrodepositable coating material including one or more cathodically electrodepositable resins (A); one or more crosslinking agents (B); and one or more compounds represented by formula (I)
##STR00001##
where R.sup.1═H or OH; R.sup.2=a divalent radical selected from the group consisting of *C(O)—O, (HO)*CH—CH.sub.2 and *CH.sub.2—CH.sub.2, with * denoting the carbon atom which is bound to the benzene ring; and R.sup.3=a monovalent radical. Also described herein is a method of coating a metallic substrate including the steps of dipping a metallic substrate into an electrodeposition bath containing the electrodepositable coating material; switching the substrate as a cathode; depositing the electrodepositable coating material onto the substrate to form a coating layer; and drying and curing the thus formed coating layer. Further described herein is a method of using the compounds of formula (I) as anticorrosion agents in electrodeposition paints and coated substrates.
FORMATION OF A BARRIER COATING USING ELECTROPHORETIC DEPOSITION OF A SLURRY
Methods are provided for forming a coating on a surface of a substrate. The method may include: applying a negative charge to the surface of the substrate; electrophoretically depositing a slurry layer onto the surface of the substrate; and densifying the slurry layer on the surface of the substrate at a sintering temperature to form a sintered layer of the coating. The slurry layer may include a plurality of EBC material particles, a cationic polyelectrolyte, a plurality of polymeric binder particles, and a solvent. The plurality of EBC material particles may comprise barium strontium aluminosilicate (BSAS), mullite, silicon, rare earth compounds, or combinations thereof.
Electrodeposition Coating Material Containing Organic Polyhydroxy-Functional Anticorrosion Agents
Described herein is an electrodepositable coating material including comprising one or more cathodically electrodepositable resins (A); one or more crosslinking agents (B); and one or more compounds represented by formula (I)
##STR00001## where C(R.sup.1)(R.sup.2) is C═O or CH.sub.2; R.sup.3 is H or OH; R.sup.4 and R.sup.5 are H or OH, with the proviso that at least one of R.sup.4 and R.sup.5 is H; and R.sup.6-R.sup.7 is C═C or HC—CH. Also described herein is a method of coating a metallic substrate comprising including the steps of dipping a metallic substrate into an electrodeposition bath containing the electrodepositable coating material; switching the substrate as a cathode; depositing the electrodepositable coating material onto the substrate to form a coating layer; and drying and curing the thus formed coating layer. Further described herein is a method of using the compounds of formula (I) as anticorrosion agents in electrodeposition paints and coated substrates.
CATHODIC ELECTROCOATING COMPOSITION HAVING REDUCED VOLATILE ORGANIC COMPOUNDS
A cathodic electrocoating composition having reduced volatile organic compounds includes: an epoxy resin comprising; a film forming binder, and a cross-linking agent; a pigment paste; water; and about 0.01 to about 10 percent by weight of an oxo-alcohol, based on a total weight of the composition, wherein the resin composition is free of glycol ethers.
Electrodepositable coating composition having improved crater control
The present invention is directed towards an electrodepositable coating composition comprising a polyfarnesene polymer and an ionic salt group-containing film-forming polymer. Also disclosed are methods of coating a substrate using the electrodepositable coating composition, coatings derived from the electrodepositable coating composition, and substrates coated with the coatings derived from the electrodepositable coating composition.
CATIONIC ELECTRODEPOSITION COATING COMPOSITION
Provided is a cationic electrodeposition coating composition having good anti-cratering performance. A cationic electrodeposition coating composition comprising a coating film-forming resin (A), a metal compound (B) containing a trivalent metal element, and a silicone compound (C), wherein a content of the metal compound (B) is 0.03 parts by mass or more and less than 4 parts by mass in terms of a metal element based on 100 parts by mass of a resin solid content of the coating film-forming resin (A), and a content of the silicone compound (C) is 0.005 parts by mass or more and 4.5 parts by mass or less based on 100 parts by mass of the resin solid content of the coating film-forming resin (A).
ELECTROCOATING COMPOSITION
Cathodic electrocoating compositions and methods for coating electrically conductive substrates are provided. An exemplary cathodic electrocoating composition includes an aqueous carrier and a film forming binder dispersed in the carrier. Further, the cathodic electrocoating composition includes guar gum as an edge protective agent.
ELECTROCOATING COMPOSITION
Cathodic electrocoating compositions and methods for coating electrically conductive substrates are provided. An exemplary cathodic electrocoating composition includes an aqueous carrier and a film forming binder dispersed in the carrier. Further, the cathodic electrocoating composition includes chitosan as an edge protective agent.
CATIONIC ELECTRODEPOSITION COATING COMPOSITION
To provide a cationic electrodeposition coating composition manifesting excellent anticorrosive property at edges and in flat areas, along with finish quality, even in a state of thin film, as well as a coated article demonstrating these excellent coating film performances, the cationic electrodeposition coating composition includes an amino group-containing epoxy resin (A), a blocked polyisocyanate compound (B), and crosslinked epoxy resin particles (C), wherein the crosslinked epoxy resin particles (C) are contained by 0.1 to 40 parts by mass relative to the total mass in solids content of the amino group-containing epoxy resin (A) and blocked polyisocyanate compound (B); the number-average molecular weight of the crosslinked epoxy resin particles (C) is under 100,000; and/or the volume-average particle size of the crosslinked epoxy resin particles (C) is 30 to 1,000 nm.