C09D5/4434

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.

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.

High Edge Cathodic Epoxy Electrocoat Composition
20170226653 · 2017-08-10 · ·

An electrocoating composition and a coating formed from the composition are described herein. The electrocoating composition includes at least an epoxy resin component, an isocyanate-functional component and a silica-based additive. The coating shows about 40 to 70% reduction in edge corrosion relative to a conventional coating.

ELECTRODEPOSITABLE COATING COMPOSITION

The present invention is directed to a phosphated epoxy resin comprising at least one terminal group comprising a phosphorous atom covalently bonded to the re sin by a carbon-phosphorous bond or by a phosphoester linkage; and at least one carbamate functional group. The present invention is also directed towards aqueous resinous dispersions comprising the phosphated epoxy resin, methods of coating a substrate, coated substrates, and methods of making a phosphated epoxy resin.

Electrodepositable coating composition

The present invention is directed to a phosphated epoxy resin comprising at least one terminal group comprising a phosphorous atom covalently bonded to the resin by a carbon-phosphorous bond or by a phosphoester linkage; and at least one carbamate functional group. The present invention is also directed towards aqueous resinous dispersions comprising the phosphated epoxy resin, methods of coating a substrate, coated substrates, and methods of making a phosphated epoxy resin.

LOW VOC ANIONIC ELECTRODEPOSITABLE COATING COMPOSITION

The present invention is directed to an electrodepositable coating composition comprising a main vehicle comprising a phosphatized epoxy resin, a plasticizer, and a curing agent, wherein the main vehicle comprises a low-VOC main vehicle. The present invention is also directed to coatings and coated substrates.

High edge cathodic epoxy electrocoat composition
10676837 · 2020-06-09 · ·

An electrocoating composition and a coating formed from the composition are described herein. The electrocoating composition includes at least an epoxy resin component, an isocyanate-functional component and a silica-based additive. The coating shows about 40 to 70% reduction in edge corrosion relative to a conventional coating.

ELECTRODEPOSITABLE COATING COMPOSITION

The present invention is directed to a phosphated epoxy resin comprising at least one terminal group comprising a phosphorous atom covalently bonded to the resin by a carbon-phosphorous bond or by a phosphoester linkage; and at least one carbamate functional group. The present invention is also directed towards aqueous resinous dispersions comprising the phosphated epoxy resin, methods of coating a substrate, coated substrates, and methods of making a phosphated epoxy resin.

FLEXIBLE POLYMER ELECTROPHORETIC COATING AND USE THEREOF IN PREPARATION OF GARDEN SHEARS
20240166891 · 2024-05-23 ·

Disclosed is a flexible polymer electrophoretic coating, including an emulsion and a color paste, where the emulsion includes the following raw materials in parts by weight: 20-40 parts of an epoxy resin; 1-5 parts of ethanolamine; 1-5 parts of propylene glycol methyl ether acetate; 0.1-1 parts of propylene glycol phenyl ether; 2-3 parts of lactic acid; and 50-70 parts of water; the color paste includes the following raw materials in parts by weight: 5-10 parts of an epoxy resin; 0.1-1 parts of ethanolamine; 1-3 parts of propylene glycol methyl ether acetate; 0.05-0.3 parts of propylene glycol phenyl ether; 0.5-2 parts of lactic acid; and 0.1-1 parts of a colorant; and a weight ratio of the emulsion to the color paste is (1-2):1. The flexible polymer electrophoretic coating can effectively improve the abrasion resistance of the surface of the garden shears and reduces the occurrence of peeling off.

Low VOC anionic electrodepositable coating composition
10370545 · 2019-08-06 · ·

The present invention is directed to an electrodepositable coating composition comprising a main vehicle comprising a phosphatized epoxy resin, a plasticizer, and a curing agent, wherein the main vehicle comprises a low-VOC main vehicle. The present invention is also directed to coatings and coated substrates.