EP0159894A2
Expired / Lapsed
EP
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Thermoset acrylic resin composition for coating metallic materials and stainless steel coated with the composition
Assignee: JNC Corp
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Filing: 1985-04-15
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Granted: —
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Expires: 2005-04-15
Abstract
Abstract A thermoset acrylic resin composition for coating metallic materials, particularly stainless steel, having a superior adhesion thereonto and hence giving superior resistance to forming after coating, and a stainless steel piece coated with a coating material comprising the above composition, followed by baking, and having a superior colourability and endurability, are provided, which compositions is obtained by radical-copolymerizing (a) 40 to 80% by weight an acrylic or methacrylic acid ester having 1 to 12 C in the ester moiety, (b) 20 to 5% by weight a hydroxyl group- or epoxy group-containing acrylic or methacrylic acid ester, (c) 20 to 0.01 % by weight a vinyl group-containing polysiloxane and (d) 20 to 2% by weight a vinyl group-containing silane compound, these % by weight being based on the total weight of monomers (a) to (d).
Inventors
- 👤 Masuhito Ohgushi
- 👤 Hiroshi Ohtsuka
- 👤 Tsutomu Asaba
- 👤 Hironobu Hoshi
- 👤 Kenichi Goshokubo
- 👤 Takeo Wakui
- 👤 Kiminori Ishii
- 👤 Masashi Ohno
- 👤 Yukio Okada
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 15:25
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/12; C08F283/124; C09; C09D; C09D143/00; C09D143/04; C09D151/00; C09D151/08; C09D151/085; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/26; Y10T428/261; Y10T428/31504; Y10T428/31511; Y10T428/31652; Y10T428/31663; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
133 words
A thermoset acrylic resin composition for coating metallic materials, obtained by subjecting to radical copolymerization, the following monomers (a) to (d), where the percentages are by weight based on the total weight of the monomers (a) to (d) : (a) at least one acrylic acid ester or methacrylic acid ester, with the ester having 1 to 12 carbon atoms in the ester group moeity, in an amount of 40 to 80% by weight; (b) at least one hydroxyl group- or epoxy group-containing acrylic acid ester or hydroxyl group- or epoxy group-containing methacrylic acid ester, in an amount of 20 to 5% by weight; (c) a vinyl group-containing polysiloxane, in an amount of 20 to 0.01% by weight; and (d) a vinyl group-containing silane compound, in an amount of 20 to 2% by weight.
Claim 2
Dependent Claim
133 words
A thermoset acrylic resin composition for coating metallic materials, obtained by subjecting to radical copolymerization, the following monomers (a) to (d), where the percentages are by weight based on the total weight of the monomers (a) to (d) : (a) at least one acrylic acid ester or methacrylic acid ester, with the ester having 1 to 12 carbon atoms in the ester group moeity, in an amount of 40 to 80% by weight; (b) at least one hydroxyl group- or epoxy group-containing acrylic acid ester or hydroxyl group- or epoxy group-containing methacrylic acid ester, in an amount of 20 to 5% by weight; (c) a vinyl group-containing polysiloxane, in an amount of 20 to 0.01% by weight; and (d) a vinyl group-containing silane compound, in an amount of 20 to 2% by weight.
Claim 3
Dependent Claim
31 words
A composition according to claim 1 wherein 0.1 to 5% by weight of an organic acid having 3 or more carbon atoms is blended in with the mixture of the monomers.
Claim 4
Dependent Claim
16 words
A composition according to claim 2 wherein the organic acid is acrylic acid or maleic anhydride.
Claim 5
Dependent Claim
26 words
A composition according to claim 1. 2, or 3 wherein thecopolymer obtained by the radical copolymerization has a weight average molecular weight of 5,000 to 300,000.
Claim 6
Dependent Claim
146 words
A composition according to any preceding claim, wherein the vinyl group-containing polysiloxane is at least one of the following monomers (e) to (i): (e) vinyl group-terminated polyalkylsiloxanes having a viscosity at 25°C (η) of 2 to 100,000 cp and the following structural formula: wherein n represents a positive integer; (f) polydimethyl-polymethylvinylsiloxane copolymers having a η of 10-100,000 cp at 25°C and the following structural formula wherein m and n each represent a positive integer: (g) methacryloxypropyl group-terminated polydimethylsiloxanes having a η of 5 to 100,000 cp and the following structural formula: wherein n represents a positive integer; (h) polydimethyl-methacryloxypropylmethylsiloxanes having a η of 10 to 100,000 cp and the following structural formula: wherein n represents a positive integer; and (i) compounds having a phenyl group substituted for some of -(CH 3 ) 2 in the Si-(CH 3 ) 2 groups in the compounds (e) to (h).
Claim 7
Dependent Claim
150 words
A stainless steel piece having thereon a coating comprising a modified acrylic resin as an active ingredient, prepared by subjecting to radical copolymerization, (1) 20 to 2% by weight of a vinyl group-containing alkoxysilane, (2) 20 to 0.01% by weight of a vinyl group-containing polysiloxane, (3) 20 to 5% by weight of a hydroxyl group- or epoxy group-containing acrylic acid ester or methacrylic acid ester and 40 to 80% by weight of (4) an acrylic acid ester having 1 to 12 carbon atoms in the ester group moiety or (5) a methacrylic acid ester having 1 to 12 carbon atoms in the ester group moiety, in the presence of 0.1 to 5% by weight o1 an organic acid having 3 or more carbon atoms, the respective % by weight being based on the total weight of the monomers (1) to (5), and baking at a temperature of 100° to 350°C.
Claim 8
Dependent Claim
150 words
A stainless steel piece having thereon a coating comprising a modified acrylic resin as an active ingredient, prepared by subjecting to radical copolymerization, (1) 20 to 2% by weight of a vinyl group-containing alkoxysilane, (2) 20 to 0.01% by weight of a vinyl group-containing polysiloxane, (3) 20 to 5% by weight of a hydroxyl group- or epoxy group-containing acrylic acid ester or methacrylic acid ester and 40 to 80% by weight of (4) an acrylic acid ester having 1 to 12 carbon atoms in the ester group moiety or (5) a methacrylic acid ester having 1 to 12 carbon atoms in the ester group moiety, in the presence of 0.1 to 5% by weight o1 an organic acid having 3 or more carbon atoms, the respective % by weight being based on the total weight of the monomers (1) to (5), and baking at a temperature of 100° to 350°C.
Claim 9
Dependent Claim
19 words
A stainless steel piece according to claim 6 wherein the coating has a thickness of 1 to 30 u.
Claim 10
Dependent Claim
28 words
A stainless steel piece according to claim 6 or 7 wherein a pigment having an average particle diameter of 2 µ or less is present in the coating.
Claim 11
Dependent Claim
28 words
A stainless steel piece according to claim 6, 7 or 8 wherein after shaping of the piece the coating is baked at a temperature of 100 to 300°C.
References Cited (Backward Citations)
No citation records indexed.
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