Patent classifications
C09D5/443
MODIFIED EPOXY RESIN AND ELECTRODEPOSITION COATING MATERIAL
The present invention provides an epoxy resin that has excellent curability, when a low-activity catalyst is used or when used at low temperatures, that has excellent storage stability, and that yields a coating material having excellent coating film finish properties and corrosion resistance. The present invention further addresses an object of providing an amine-modified epoxy resin produced by reacting the epoxy resin with an amine compound, as well as providing a cationic electrodeposition coating material containing the amine-modified epoxy resin. The solution provided is a modified epoxy resin produced by reaction of at least the following (i) and (ii) and having an average polyfunctionalization degree (X1) per molecule of the modified epoxy resin of 0.10 or greater: (i) a compound (?) having one or more epoxy groups, (ii) a compound (?) having a functional group that is reactive with an epoxy group and that has a total functionality of the functional group of 3 or greater, and/or a compound (?) having a functional group that is reactive with an epoxy group and that has a total functionality of the functional group of 1 or 2, and the average polyfunctionalization degree (X1) per molecule of the modified epoxy resin being represented by Equation (1) below: Equation (1): Average Polyfunctionalization Degree (X1)=Number of Terminals Per Molecule of Modified Epoxy Resin?2
VEHICLE INTERIOR COMPONENT HAVING COATED FRAME FOR ADHESIVE BONDING WITHOUT PRIMER
Disclosed are embodiments of a vehicle interior component. The vehicle interior component includes a glass article having a first major surface and a second major surface in which the second major surface is opposite to the first major surface. The vehicle interior component also includes a frame comprising a support surface and a coating disposed on the support surface of the frame. The vehicle interior component further includes an adhesive joining the second major surface of the glass article to support surface of the frame. The adhesive is bonded directly to the coating.
ELECTRODEPOSITION COATING COMPOSITION AND ELECTRODEPOSITION COATING METHOD
It is an object of the present invention is to provide an electrodeposition coating composition and an electrodeposition coating method that enable the formation of a cured electrodeposition coating film that develops excellent throwing power and exhibits a good appearance. An electrodeposition coating composition of the present invention comprising: at least one compound (A) selected from the group consisting of a zinc compound (A-1) and a bismuth compound (A-2); an aminated resin (B); and a curing agent (C), wherein a milligram equivalent (MEQ (A)) of an acid per 100 g of a resin solid content in the composition is 27 or more; a coulombic efficiency of the composition is 30 mg/C or less; a film resistance of a 15-m-thick uncured electrodeposition coating film formed using the composition is 400 k.Math.cm.sup.2 or more; and a coating film viscosity of an electrodeposition coating film obtained from the composition is 3000 Pa.Math.s or less at 50 C.
Spindle motor
Provided are a base member for a heat-assisted magnetic recording disk drive apparatus, the base member including: a coating film coating at least a part of the base member, in which the coating film is an overbaked epoxy resin-containing electrodeposition coating film, a spindle motor including the base member, and a method for manufacturing the base member.
Method of improving the corrosion resistance of a metal substrate
The invention provides an electrodepositable coating composition comprising a resinous phase dispersed in an aqueous medium, said resinous phase comprising: (1) an ungelled active hydrogen-containing, cationic salt group-containing resin; (2) an at least partially blocked polyisocyanate curing agent; and (3) a pigment component, wherein the pigment component comprises an inorganic, platelike pigment present in the resinous phase, wherein the electrodepositable coating composition contains less than 8 percent by weight of a grind vehicle, based on the total weight of solids in the electrodepositable coating composition. The invention also provides methods of improving the corrosion resistance of a metal substrate and coated substrates.
Casing structure of electronic device and manufacturing method thereof
A casing structure of electronic device including a metal base plate, a transparent cathodic electrodeposition paints layer, and a transparent paints coating layer is provided. The metal base plate has brushed texture and high gloss surface. The transparent cathodic electrodeposition paints layer is disposed on the base metal base plate. The transparent paints coating layer is disposed on the transparent cathodic electrodeposition paints layer. A manufacturing method of casing structure of electronic device is also provided.