US4812335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of painting
Assignee: Nippon Paint Co Ltd
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Filing: 1987-10-23
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Granted: 1989-03-14
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Expires: 2007-10-23
Abstract
Abstract The present invention provides a metallic paint film featuring a remarkably excellent coating appearance as well as weather resistance, by using a specific combination of a water borne paint and thermosetting clear paint in compliance with the wet-on-wet two-coat, one-bake painting method.
Inventors
- 👤 Teruaki Kuwajima
- 👤 Kazuo Uenoyama
- 👤 Masaki Takae
- 👤 Hidefumi Okuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:16
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/02; C09D133/04; C09D157/00; C09D157/04; C08; C08L; C08L2205/00; C08L2205/14; C08L2205/18; C08L61/00; C08L61/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
246 words
A method of painting comprising: coating, on a substrate provided with undercoat or intermediate coat, a water borne metallic paint made of resin composition (I) comprising; (A) 94 to 30 parts by weight of vinyl copolymer having an acid value of 5 to 100, a hydroxyl value of 20 to 100, a solubility parameter (δsp) of 9.0 to 13.0 and a number average molecular weight of 3,000 to 50,000, and which is prepared by copolymerizing an ethylenic monomer having an acid group, an ethylenic monomer having a hydroxyl group and another ethylenic monomer copolymerizable therewith, (B) 5 to 40 parts by weight of a crosslinking component reactive with component (A), and (C) 1 to 30 parts by weight of swelled resin particles swelled with an organic solvent having a solubility parameter of 7.5 to 13.0, and the resin particles having an average particle size of 0.01 to 10μ: then coating thereon, without curing the water borne metallic paint film, a thermosetting clear paint made of resin composition (II) comprising; (D) 95 to 60 parts by weight of a copolymer having a hydroxyl value of 20 to 100 and an absolute value of a difference of solubility parameter between said copolymers (A) and (D), of not less than 0.3, and which is prepared by copolymerizing an ethylenic group having a hydroxyl group and another ethylenic monomer copolymerizable with said monomer, and; (E) 5 to 40 parts by weight of a crosslinking component reactive with the component (D).
Claim 2
Independent Claim
246 words
A method of painting comprising: coating, on a substrate provided with undercoat or intermediate coat, a water borne metallic paint made of resin composition (I) comprising; (A) 94 to 30 parts by weight of vinyl copolymer having an acid value of 5 to 100, a hydroxyl value of 20 to 100, a solubility parameter (δsp) of 9.0 to 13.0 and a number average molecular weight of 3,000 to 50,000, and which is prepared by copolymerizing an ethylenic monomer having an acid group, an ethylenic monomer having a hydroxyl group and another ethylenic monomer copolymerizable therewith, (B) 5 to 40 parts by weight of a crosslinking component reactive with component (A), and (C) 1 to 30 parts by weight of swelled resin particles swelled with an organic solvent having a solubility parameter of 7.5 to 13.0, and the resin particles having an average particle size of 0.01 to 10μ: then coating thereon, without curing the water borne metallic paint film, a thermosetting clear paint made of resin composition (II) comprising; (D) 95 to 60 parts by weight of a copolymer having a hydroxyl value of 20 to 100 and an absolute value of a difference of solubility parameter between said copolymers (A) and (D), of not less than 0.3, and which is prepared by copolymerizing an ethylenic group having a hydroxyl group and another ethylenic monomer copolymerizable with said monomer, and; (E) 5 to 40 parts by weight of a crosslinking component reactive with the component (D).
Claim 3
Dependent Claim
43 words
The method of painting as claimed in claim 1, wherein the swelled resin particles are prepared by swelling in an organic solvent having a solubility parameter of 7.0 to 13.0 resin particles which have been prepared by emulsion polymerization in an aqueous solvent.
Claim 4
Dependent Claim
33 words
The method of painting as claimed in claim 1, wherein the swelled resin particles are swelled with an organic solvent of 8.5 to 11.5 and have a particle size of 0.01 to 0.5.
Claim 5
Dependent Claim
30 words
The method of painting as claimed in claim 1, wherein the solubility parameter of an organic solvent for swelling the resin particles is less than that of the copolymer (A).
Claim 6
Dependent Claim
28 words
The method of painting as claimed in claim 1, wherein the resin particles are prepared by an emulsion polymerization using an emulsifying agent having an amphotetic ion group.
Claim 7
Dependent Claim
30 words
The method of painting as claimed in claim 1, wherein among monomers in said (A), a part of acid groups of ethylenic monomers having an acid is a sulfonic group.
Claim 8
Dependent Claim
20 words
The method of painting as claimed in claim 1, wherein a thermosetting clear paint is of a water dilution type.
Claim 9
Dependent Claim
29 words
The method of painting as claimed in claim 1, wherein a thermosetting clear paint is an organic solvent type clear paint comprising more than 40% of a nonvolatile component.
Claim 10
Dependent Claim
24 words
A method according to claim 1 in which the resin composition (I) is a water soluble resin composition and contains water as a diluent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |