Patent US5905104A successfully refreshed from Google Patents.
US5905104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat resistant powder coating composition
Assignee: HB Fuller Licensing and Financing Inc
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Filing: 1997-10-29
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Granted: 1999-05-18
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Expires: 2017-10-29
Abstract
Abstract The invention provides a protective coating composition for use on substrates including steel, aluminum, iron and the like. This composition further provides abrasion resistance, electrical resistance, ultra-violet protection, corrosion resistance and heat resistance. It can be particularly useful for coating high temperature stacks, mufflers, manifolds, boilers, ovens, furnaces, steam lines, heat exchangers, barbecue equipment, cooking utensils and other parts that require such powder coating composition. This composition further provides good initial adhesion. This invention also provides a powder coating composition containing a hydroxyl-functional silicone resin, a glycidyl-functional acrylic resin and an optional flow control agent.
Inventors
- 👤 Wayne G. Eklund
- 👤 Paula Torrejon Ramos
- 👤 Charles J. Torborg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:12
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/18; F; F28; F28F; F28F19/00; F28F19/02; B; B05; B05D; B05D1/00; B05D1/02; B05D1/04; B05D1/06; C09D133/00; C09D133/04; C09D133/06; C09D133/062; C09D133/068; C23; C23C; C23C24/00; C23C24/08; C23C26/00; C23C30/00; C08; C08L; C08L83/00; C08L83/04; Y; Y10; Y10S; Y10S525/00; Y10S525/934; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
57 words
A protective coating formed from a powder-coating composition comprising: 1) at least one polysiloxane; 2) from about 0.01 to about 10% by weight of the polymer content of at least one adhesion promoter; and 3) at least at least one inorganic compound selected from the group consisting of hydrated silicates of aluminum, calcium metasilicate and mixtures thereof.
Claim 2
Dependent Claim
57 words
A protective coating formed from a powder-coating composition comprising: 1) at least one polysiloxane; 2) from about 0.01 to about 10% by weight of the polymer content of at least one adhesion promoter; and 3) at least at least one inorganic compound selected from the group consisting of hydrated silicates of aluminum, calcium metasilicate and mixtures thereof.
Claim 3
Dependent Claim
20 words
The protective coating of claim 1 wherein said protective coating formed has a cross-hatch adhesion failure of less than 5%.
Claim 4
Dependent Claim
21 words
The protective coating of claim 1 wherein said adhesion promoter is selected from a group consisting of (meth)acrylic polymers and copolymers.
Claim 5
Dependent Claim
14 words
The protective coating of claim 1 wherein said polysiloxane comprises a hydroxyl-functional silicone resin.
Claim 6
Dependent Claim
25 words
The protective coating of claim 4 wherein the hydroxyl-functional silicone resin is selected from the group consisting of dimethyl, diphenyl, phenylpropyl and methyl-phenyl silicone resin.
Claim 7
Dependent Claim
20 words
The protective coating of claim 1 wherein the composition comprises less than 0.15% by weight of any flow control agent.
Claim 8
Dependent Claim
19 words
The protective coating of claim 3 wherein said copolymer comprises an ethylene or propylene copolymer of a (meth)acrylic resin.
Claim 9
Dependent Claim
12 words
The protective coating of claim 7 wherein said copolymer is ethylene/acrylic copolymer.
Claim 10
Dependent Claim
53 words
A powder coating composition comprising: 1) at least one hydroxyl-functional silicone resin; 2) from about 0.01 to about 10% by weight of the polymer content of at least one adhesion promoter; and 3) at least one inorganic compound selected from the group consisting of hydrated silicates of aluminum, calcium metasilicate and mixtures thereof.
Claim 11
Dependent Claim
53 words
A powder coating composition comprising: 1) at least one hydroxyl-functional silicone resin; 2) from about 0.01 to about 10% by weight of the polymer content of at least one adhesion promoter; and 3) at least one inorganic compound selected from the group consisting of hydrated silicates of aluminum, calcium metasilicate and mixtures thereof.
Claim 12
Dependent Claim
14 words
The powder coating composition of claim 9 further comprising an accelerator comprising stannous octoate.
Claim 13
Dependent Claim
52 words
A protective coating formed from a powder coating composition comprising: 1) at least one acrylic polymer; 2) at least one polysiloxane; and 3) at least one inorganic compound selected from the group consisting of hydrated silicates of aluminum, calcium metasilicate and mixtures thereof, wherein said coating composition is free of flow agents.
Claim 14
Dependent Claim
52 words
A protective coating formed from a powder coating composition comprising: 1) at least one acrylic polymer; 2) at least one polysiloxane; and 3) at least one inorganic compound selected from the group consisting of hydrated silicates of aluminum, calcium metasilicate and mixtures thereof, wherein said coating composition is free of flow agents.
Claim 15
Dependent Claim
11 words
The protective coating of claim 11 further comprising an adhesion promoter.
Claim 16
Dependent Claim
16 words
The protective coating of claim 11 wherein said acrylic polymer is a glycidyl functional acrylic resin.
Claim 17
Dependent Claim
31 words
The protective coating of claim 13 wherein said glycidyl functional resin is selected from a group consisting of a glycidyl functional acrylic resin, a glycidyl functional methacrylic resin and mixtures thereof.
Claim 18
Independent Claim
80 words
A method of coating an article comprising the steps of: 1) providing a powder coating composition comprising: a) at least one glycidyl-functional polyacrylate; b) at least one hydroxyl-functional polysiloxane; c) at least one inorganic compound selected from the group consisting of hydrated silicates of aluminum, calcium metasilicate and mixtures thereof; and d) at least one adhesion promoter; and 2) coating said composition on a substrate and heating to a substrate temperature greater than about 205° C. for about 20 minutes.
Claim 19
Independent Claim
80 words
A method of coating an article comprising the steps of: 1) providing a powder coating composition comprising: a) at least one glycidyl-functional polyacrylate; b) at least one hydroxyl-functional polysiloxane; c) at least one inorganic compound selected from the group consisting of hydrated silicates of aluminum, calcium metasilicate and mixtures thereof; and d) at least one adhesion promoter; and 2) coating said composition on a substrate and heating to a substrate temperature greater than about 205° C. for about 20 minutes.
Claim 20
Dependent Claim
54 words
A heat-resistant thermosetting powder coating composition comprising: 1) at least one hydroxyl-functional silicone resin; 2) at least one glycidyl functional acrylic resin; and 3) at least one inorganic compound selected from the group consisting of hydrated silicates of aluminum, calcium metasilicate and mixtures thereof; said powder coating composition is free of flow control agents.
Claim 21
Dependent Claim
54 words
A heat-resistant thermosetting powder coating composition comprising: 1) at least one hydroxyl-functional silicone resin; 2) at least one glycidyl functional acrylic resin; and 3) at least one inorganic compound selected from the group consisting of hydrated silicates of aluminum, calcium metasilicate and mixtures thereof; said powder coating composition is free of flow control agents.
Claim 22
Dependent Claim
12 words
The composition of claim 16 further comprising at least one adhesion promoter.
Claim 23
Dependent Claim
13 words
The composition of claim 17 wherein said adhesion promoter comprises a (meth)acrylic copolymer.
Claim 24
Independent Claim
86 words
A method of coating an article comprising the steps of: 1) providing a powder coating composition comprising a) at least one polysiloxane, b) from about 0.01 to about 10% by weight of the polymer content of at least one adhesion promoter, and c) at least one inorganic compound selected from the group consisting of hydrated silicates of aluminum, calcium metasilicate and mixtures thereof; and 2) coating said composition on a substrate and heating to a substrate temperature greater than about 205° C. for about 20 minutes.
Claim 25
Independent Claim
86 words
A method of coating an article comprising the steps of: 1) providing a powder coating composition comprising a) at least one polysiloxane, b) from about 0.01 to about 10% by weight of the polymer content of at least one adhesion promoter, and c) at least one inorganic compound selected from the group consisting of hydrated silicates of aluminum, calcium metasilicate and mixtures thereof; and 2) coating said composition on a substrate and heating to a substrate temperature greater than about 205° C. for about 20 minutes.
Claim 26
Dependent Claim
36 words
An article comprising a substrate, and coated on at least one surface of said substrate is a coating formed from the method of claim 19, said coating having a cross-hatch adhesion failure of less than 5%.
Claim 27
Dependent Claim
17 words
The article of claim 20 wherein said coating has a thickness of at least about 40 microns.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2002-05-17 | 2002-11-16 | 2003-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-05-17 | 2006-11-16 | 2007-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-05-17 | 2010-11-16 | 2011-05-18 | $7700.00 | Window Closed / Lapsed |