Abstract:
A method for curing a coating film wherein a filmforming, polymerizable, organic coating material is electrodeposited upon an electroconductive object as an anode immersed in an aqueous dispersion of an acidic alkyd resin modified with conjugated unsaturated fatty acid and/or oil, wherein the acidic alkyd resin has an oil length in the range of 10 to 60 wt % and a resin acid value in the range of 30 to 100, being neutralized with water soluble bases, and then the curing coating film thus obtained by applying ionizing radiation.
Abstract:
An electrodeposition dispersion of the present invention is formed of a dispersion medium and a solid content. The solid content includes polyimide-based resin particles and fluorine resin particles. Also, a content ratio of the fluorine resin particles in the solid content is 20 to 70% by mass. In addition, a median diameter of the polyimide-based resin particles is 50 to 400 nm.
Abstract:
The invention relates to a method for forming a polymer film on a surface that conducts or semiconducts electricity by means of electrografting. Said method uses an electrolytic solution containing a selected quantity of Brönsted acid. The invention also relates to the electrically conductive or semiconductive surfaces obtained by means of said method.
Abstract:
The present invention relates to a cationic electrodeposition coating composition substantially free of lead compounds, and more specifically to a method of coating an alloyed hot-dip galvanized steel plate with the composition and a coated article obtained by the method having edge portions and general surfaces excellent in corrosion resistance. The invention provides a method of coating an alloyed hotdip galvanized steel plate with a lead-free cationic electrodeposition coating composition containing a rust preventive pigment to form an electrodeposition coating film excellent in corrosion resistance, and a coated article obtained by the electrodeposition.
Abstract:
A liquid crystal optical device including a liquid crystal/polymer composite film including a matrix polymer composed mainly of a transparent resin having an ionic dissociative group and, dispersed therein, a liquid crystal particle; and conductive substrates sandwiching the liquid crystal/polymer composite film therebetween, at least one of the conductive substrates being transparent. A method for producing the liquid crystal optical device according to the present invention includes the steps of dispersing a liquid crystal in a dispersion medium composed mainly of water to prepare an oil-in-water type emulsion; preparing a composition for electrodeposition through the use of the resultant emulsion and a resin for a matrix polymer; electrodepositing the composition for electrodeposition on a conductive base material to form an electrodeposited coating; and drying the electrodeposited coating to form on the conductive base material a liquid crystal/polymer composite film including a matrix polymer and, dispersed therein, a liquid crystal particle.
Abstract:
Encapsulated liquid crystal is deposited onto an electrode by providing a substrate having an electrode pattern thereon; placing the substrate and the electrode pattern in contact with an electrodeposition medium comprising a liquid crystal composition, a containment medium or precursor therefor, and optionally a carrier medium; and depositing encapsulated liquid crystal material comprising the liquid crystal composition dispersed in the containment medium onto the electrode pattern or selected portions thereof by applying a voltage to the electrode pattern or selected portions thereof. The coated substrate-electrode combination can then be made into displays, privacy screens, signs, architectural partitions, and the like.
Abstract:
A metallic container for beverage is protected from its contents by electrodeposited zinc, which is anodized in alkali then anodically reacted with weak poly(acrylic acid) and finally cured at 85.degree. C. at 100% relative humidity.
Abstract:
A metallic container for beverage is protected from its contents by electrodeposited zinc, which is anodized in alkali then anodically reacted with weak poly(acrylic acid) and finally cured at 85.degree. C. at 100% relative humidity.
Abstract:
Metallic surfaces, especially of ferrous metals, are coated by passing an electric current at a voltage of at least 15 V between the metallic surface as anode and a cathode in contact with a composition comprising(A) an epoxide resin, and(B) a salt of formula ##STR1## where A.sup.y+ denotes a cation which is a metal, a metal complex an organometallic, a heterocycle, a sulphoxonium, ammonium, a substituted ammonium or a phosphonium ion,y denotes 1, 2, or 3,Z.sup.- denotes an anion selected from perchlorate, trifluoromethane sulphonate pentafluorohydroxoantimonate, and the complex anions of formula MQ.sub.d.sup.-,M represents a boron, phosphorus, antimony or arsenic atomQ represents a halogen atom, andd is 4 or 6 and is one more than the valency of M, whereby polymerized epoxide resin is deposited on the metallic surface.Typical salts (B) include sodium, potassium, magnesium, ammonium, substituted phosphonium and substituted ammonium trifluoromethane sulphonates, perchlorates, tetrafluoroborates, hexafluorophosphates, hexafluoroarsenates, and hexafluoroantimonates.