EP0250183A2
Expired / Lapsed
EP
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Coating powder
Assignee: Nippon Paint Co Ltd
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Filing: 1987-06-12
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Granted: —
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Expires: 2007-06-12
Abstract
Abstract Coating powder containing 0.1 to 30% by weight of the total solid of crosslinked polymer particles, which is stable, hardly producing blocking during the storage thereof, and capable of resulting a coating with excellent appearance.
Inventors
- 👤 Yoshio Eguchi
- 👤 Keizou Ishii
- 👤 Tadafumi Miyazono
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 06:23
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D163/00; C09D167/00; C09D5/00; C09D5/03; C08; C08L; C08L2205/00; C08L2205/14; C08L2205/18
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
29 words
Coating powder consisting essentially of (a) a binder resin (b) a hardener (c) crosslinked polymer particles, and (d) other optional additives as pigments, levelling agent, UV absorber and anti-oxidant.
Claim 2
Dependent Claim
29 words
Coating powder consisting essentially of (a) a binder resin (b) a hardener (c) crosslinked polymer particles, and (d) other optional additives as pigments, levelling agent, UV absorber and anti-oxidant.
Claim 3
Dependent Claim
44 words
The powder according to claim 1, wherein the binder resin is selected from the group consisting of acrylic resin, polyester resin and epoxy resin, which is solid at a room temperature and is excellent in fluidity and film-forming properties at a heat melted state.
Claim 4
Dependent Claim
24 words
The powder according to claim 1, wherein the mean grain diameter of the crosslinked polymer particles is in a range of 0.01 to 10µ.
Claim 5
Dependent Claim
45 words
The powder according to claim 1, wherein the crosslinked polymer particles are composed of polymer selected from the group consisting of acrylic resin, epoxy resin, polyester resin and melamine resin, which are insoluble in an organic solvent and cannot be fused at a baking temperature.
Claim 6
Dependent Claim
29 words
The powder according to claim 4, wherein the acrylic resin particles are obtained by an emulsion polymerization of α,β-ethylenically unsaturated monomer(s) and crosslinking monomer with the help of emulsifier.
Claim 7
Dependent Claim
16 words
The powder according to claim 5, wherein the emulsifier is an amphoteric ionizable group containing compound.
Claim 8
Dependent Claim
106 words
The powder according to claim 1, wherein the crosslinked polymer particles are three-dimensionally crosslinked to such extent that the thermal fluidity expressed in terms of flow distance determined by the test in which 1 g of said polymer particles are pressed under 10 t/cm 2 pressure to form a pellet with a diameter of 2 cm, thus formed pellet is fixed on a polished steel plate with a double faced tape, the plate is held at an inclination of 45 degrees and heated at 150°C for 15 minutes and the flow distance of said pellet on the plate surface is measured, is 0 to 5 mm.
Claim 9
Dependent Claim
28 words
The powder according to claim 1, wherein the amount of said crosslinked polymer particles is 0.1 to 30 % by weight of the total solid of said powder.
Claim 10
Dependent Claim
28 words
The powder according to claim 8, wherein the amount of said crosslinked polymer particles is 0.1 to 10 % by weight of the total solid of said powder.
Claim 11
Dependent Claim
28 words
The powder according to claim 9, wherein the amount of said crosslinked polymer particles is 0.1 to 5 % by weight of the total solid of said powder.
Claim 12
Dependent Claim
22 words
The powder according to claim 1, wherein the binder resin is glycidyl group containing acrylic resin and the hardener is dicarboxylic acid.
Claim 13
Dependent Claim
23 words
The powder according to claim 1, wherein the binder resin is hydroxyl group containing polyester resin and the hardener is blocked polyisocyanate compound.
Claim 14
Dependent Claim
25 words
The powder according to claim 1, wherein the binder resin is glycidyl group containing acrylic resin and the hardener is carboxyl group containing polyester resin.
Claim 15
Dependent Claim
22 words
The powder according to claim 1, wherein the binder resin is carboxyl group containing polyester resin and the hardener is epoxy resin.
Claim 16
Dependent Claim
18 words
The powder according to claim 1, wherein the binder resin is epoxy resin and the hardener is dicyandiamide.
Claim 17
Dependent Claim
22 words
The powder according to claim 1, wherein the binder resin is carboxyl group containing polyester resin and the hardener is triglycidyl isocyanurate.
Claim 18
Dependent Claim
30 words
The powder according to claim 1, wherein the binder resin is glycidyl group containing-acrylic resin and the hardener is a combination of carboxyl group containing polyester resin and blocked polyisocyanate.
References Cited (Backward Citations)
No citation records indexed.
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