摘要:
A thermosetting powder coating composition which comprises a resin composition (A) having a sea-island type microphase separation structure constituted of a continuous phase (a sea phase) comprising an acrylic copolymer and a dispersion phase (an island phase) comprising a thermoplastic elastomer and a curing agent (B) and in which the total amount of a thermosetting elastomer (a-2) constituting the dispersion phase is in the range of 0.5 to 20 parts by weight with respect to 100 parts by weight of the resin composition (A). This powder coating composition is excellent in chipping resistance, impact resistance, weathering resistance and appearance properties, and it is particularly suitable for the coating of vehicles.
摘要:
There are disclosed a thermosetting resin composition for a powder paint in which a resin composition component (A) is a (block) copolymer obtained by allowing a vinyl-based polymer G (branch) block (component (a-1)) to graft-react with a vinyl-based polymer S (back bone) block (component (a-2)), and if the solubility parameters of the components (a-1) and (a-2) are represented by SPG and SPG, respectively, SPG and SPS satisfy the following numerical formula (I), and a thermosetting powder paint composition comprising a resin composition component (A) and a hardener composition component (B) wherein the component (A) is said thermosetting resin composition for a powder paint. By these compositions, a thermosetting powder paint composition having excellent storage stabilities, appearance properties, physical properties and chemical properties can be provided. Particularly, there can be provided a thermosetting powder paint composition suitably applied to painting of bodies of vehicles such as automobiles and parts of vehicles such as automobiles (aluminum wheel, wiper, pillar, door handle, fender, bonnet, air spoiler, stabilizer, front grill and the like), particularly, to top painting. SPG
摘要:
A thermosetting powder paint composition for top coating excellent in weather resistance and storage stability, which comprising 100 parts by weight of an acrylic copolymer (A) having an epoxy group, and 0.01 to 2.0 parts by weight of an organic modified polysiloxane (B) containing at least one functional group, at least two silicon atoms and no radical-polymerizable unsaturated bond wherein the component (B) is contained in the condition that a part or all thereof has reacted and bonded with the component (A) or the component (C), or all thereof has not reacted with them.
摘要:
A thermosetting powder paint composition comprising (A) a resin composition component, (B) a hardener component and (C) a solid flow controlling component, wherein the component (A) contains a resin composition component having reactivity with the component (B), the component (B) contains a hardener having reactivity with the component (A), the component (C) contains a vinyl polymer which is solid at 20° C., and the relation between SPA of the component (A) and SPC of the component (C) satisfies the following numerical formula (1) and the following numerical formula (2) simultaneously. By this constitution, excellent blocking-resistance in storing as the powder paint composition and excellent appearance properties of a paint film formed by coating the powder paint composition can be simultaneously manifested. 8≦SPA≦13 (1) 7≦SPC≦SPA (2).
摘要:
The purpose of the present invention is to provide polymerization catalyst which can produce quite efficiently (co)polymer having number average molecular weight and number of molecules which are accurately controlled in producing method of (co)polymer by the polymerization of polar unsaturated compound, and provide living polymerized (co)polymer obtained according to the producing method. For the purpose, polymerization catalyst composition which comprises the composition comprising organic oxysalt compound and hydroxycarbonyl compound having at least both an alcoholic hydroxyl group and a carbonyl group in the same molecule is provided and the polar unsaturated compound is polymerized by using the polymerization catalyst composition. The composition containing the obtained (co)polymer were able to provide thermosetting powder coating composition having particularly excellent characteristics.
摘要:
A thermosetting powder paint composition is disclosed which can realize simultaneous manifestation of I) excellent stability before film forming (in storage), II) excellent low temperature melting property/low temperature curing property in forming a film, and III) excellent film properties and physical properties after film forming;and which comprises (A) a copolymer component which is obtained by radical polymerization in a reaction system containing (a-1) an ethylenically unsaturated monomer having a glycidyl group and a unsaturated double bond in the molecule, (a-2) styrene, and (a-3) the other monomer in a specific condition, (B) a curing agent component which is a linear acid anhydride of an aliphatic divalent carboxylic acid having a specific structure, and (C) a curing catalyst component having a specific structure.
摘要:
Provided is an inexpensive seed material for liquid phase epitaxial growth of silicon carbide. A seed material 12 for liquid phase epitaxial growth of a monocrystalline silicon carbide includes a surface layer containing a polycrystalline silicon carbide with a 3C crystal polymorph. Upon X-ray diffraction of the surface layer thereof, a first-order diffraction peak corresponding to a (111) crystal plane is observed as a diffraction peak corresponding to the polycrystalline silicon carbide with a 3C crystal polymorph but no other first-order diffraction peak having a diffraction intensity of 10% or more of the diffraction intensity of the first-order diffraction peak corresponding to the (111) crystal plane is observed.
摘要:
This aims to provide a pulse laser welding aluminum alloy material, which can prevent the occurrence of an abnormal portion, when an A1000-series aluminum material is welded with a pulse laser, so that a satisfactory welded portion can be homogeneously formed, and a battery case. The pulse laser welding aluminum alloy material is made of an A1000-series aluminum material, and has a viscosity of 0.0016 Pa·s or less in a liquid phase. Alternatively, the pulse laser welding aluminum alloy material has such a porosity generation rate of 1.5 (μm2/mm) or less in the pulse-laser welded portion as is numerically defined by dividing the porosity total area (μm2), as indicated by the product of the sectional area and the number of porosities, by the length (mm) of an observation section.
摘要:
A micro movable device includes: a micro movable substrate in which a micro movable unit is formed, the micro movable unit including a frame, a movable part, and a coupling part for coupling the frame and the movable part to define an axial center of rotation of the movable part; a supporting substrate; and a reinforced fixed part provided between the frame and the supporting substrate, and including a first spacer that joins the frame to the supporting substrate and an adhesive part that covers the first spacer and joins the frame to the supporting substrate, wherein the frame includes a first area facing the movable part in a direction of extent of the axial center, and a second area different from the first area, and the reinforced fixed part is bonded to the second area of the frame.
摘要:
An image processing device comprises: a brilliance gradient computation unit computing a brilliance gradient within an image based on an image information; a color phase value computation unit computing a first color phase value and a second color phase value, the first color phase value representing a color phase inside a candidate region determined based on the brilliance gradient computed by the brilliance gradient computation unit, the second color phase value representing a color phase in a region surrounding the candidate region; and a region extraction unit extracting a region from the candidate region such that a difference between the first color phase value and the second color phase value is less than or equal to a predetermined threshold value.