US4564557A
Expired / Lapsed
US
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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: 1985-04-03
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Granted: 1986-01-14
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Expires: 2005-04-03
Abstract
Abstract A thermoset acrylic resin composition for coating metallic materials, particularly stainless steel, having a superior adhesion thereonto and hence a superior resistance to forming after coated, and a stainless steel piece coated with a coating material comprising the above composition, followed by baking, and having a superior colorability and endurability, are provided, which composition is obtained by radical-copolymerizing (a) an acrylic or methacrylic acid ester having 1-12 C in the ester moiety, in 40-80% by weight, (b) a hydroxyl group- or epoxy group-containing acrylic or methacrylic acid ester, in 20-5% by weight, (c) a vinyl group-containing polysiloxane in 20-0.01% by weight and (d) a vinyl group-containing silane compound in 20-2% by weight, these % by weight being based on the total weight of monomers (a)-(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
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:44
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
149 words
A thermoset acrylic resin composition for coating metallic materials, obtained by subjecting to radical copolymerization, the following monomers (a)-(d), each specified and each in a definite proportion by weight based on the total weight of the monomers (a)-(d): (a) at least one of compounds selected from the group consisting of acrylic acid esters and methacrylic acid esters, both the esters having 1 to 12 carbon atoms in the ester group moiety, in a proportion of 40 to 80% by weight; (b) at least one of compounds selected from the group consisting of hydroxyl group- or epoxy group-containing acrylic acid esters and hydroxyl group- or epoxy group-containing methacrylic acid esters, each in a proportion of 20 to 5% by weight; (c) a vinyl group-containing polysiloxane in a proportion of 20 to 0.01% by weight; and (d) a vinyl group-containing silane compound in a proportion of 20 to 2% by weight.
Claim 2
Dependent Claim
149 words
A thermoset acrylic resin composition for coating metallic materials, obtained by subjecting to radical copolymerization, the following monomers (a)-(d), each specified and each in a definite proportion by weight based on the total weight of the monomers (a)-(d): (a) at least one of compounds selected from the group consisting of acrylic acid esters and methacrylic acid esters, both the esters having 1 to 12 carbon atoms in the ester group moiety, in a proportion of 40 to 80% by weight; (b) at least one of compounds selected from the group consisting of hydroxyl group- or epoxy group-containing acrylic acid esters and hydroxyl group- or epoxy group-containing methacrylic acid esters, each in a proportion of 20 to 5% by weight; (c) a vinyl group-containing polysiloxane in a proportion of 20 to 0.01% by weight; and (d) a vinyl group-containing silane compound in a proportion 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 further blended with the mixture of said monomers.
Claim 4
Dependent Claim
24 words
A composition according to claim 1 wherein the copolymer obtained by the radical copolymerization has a weight average molecular weight of 5,000 to 300,000.
Claim 5
Dependent Claim
16 words
A composition according to claim 2 wherein said organic acid is acrylic acid or maleic anhydride.
Claim 6
Dependent Claim
161 words
A composition according to claim 1 wherein said vinyl group-containing polysiloxane is at least one of compounds selected from the group consisting of the following monomers (e)-(h): (e) vinyl group-terminated polyalkylsiloxanes having a viscosity at 25° C. (η) of 2 to 100,000 cp and the following structural formula: ##STR5## wherein n represents a positive integer; (f) polydimethyl-polymethylvinylsiloxane copolymers having a η of 10 to 100,000 cp at 25° C. and the following structural formula ##STR6## wherein m and n each represent a positive integer; (g) methacryloxypropyl group-terminated polydimethylsiloxanes having a viscosity at 25° C. (η) of 5 to 100,000 cp and the following structural formula: ##STR7## wherein n represents a positive integer; (h) polydimethyl-methacryloxypropylmethylsiloxanes having a viscosity at 25° C. (η) of 10 to 100,000 cp and the following structural formula: ##STR8## wherein n represents a positive integer; and compounds having phenyl group substituted for a part of --(CH 3 ) 2 in Si--(CH 3 ) 2 group in said (e)-(h).
Claim 7
Dependent Claim
152 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 of an organic acid having 3 or more carbon atoms, the respective % by weight being based on the total weight of the monomers ○1 - ○5 , and baked at a temperature of 100° to 350° C.
Claim 8
Dependent Claim
152 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 of an organic acid having 3 or more carbon atoms, the respective % by weight being based on the total weight of the monomers ○1 - ○5 , and baked at a temperature of 100° to 350° C.
Claim 9
Dependent Claim
18 words
A stainless steel piece according to claim 6 wherein said coating has a thickness of 1 to 30μ.
Claim 10
Dependent Claim
25 words
A stainless steel piece according to claim 6 wherein a pigment having an average particle diameter of 2μ or less is contained in said coating.
Claim 11
Dependent Claim
24 words
A stainless steel piece according to claim 6 wherein the coating after forming-processed is again baked at a temperature of 100 to 300° C.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-13 | 1989-07-15 | 1990-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-13 | 1993-07-15 | 1994-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-13 | 1997-07-15 | 1998-01-14 | $7700.00 | Window Closed / Lapsed |