Patent US3945962A successfully refreshed from Google Patents.
US3945962A
Expired / Lapsed
US
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Coating composition of flame retardant filler, latex binder and water soluble fire retardant borate
Assignee: Owens Corning
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Filing: 1971-12-06
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Granted: 1976-03-23
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Expires: 1991-12-06
Abstract
Abstract A water base, hardenable coating composition is disclosed for use on the inner or air conducting surfaces of fibrous glass thermal insulation employed in heating, cooling or ventilating conduits. The coating comprises, by weight: 70% to 90% of aluminum or magnesium hydrate; 5 to 20% of a binder such as vinyl acrylic latex or polyethylene vinyl acetate latex; and 1 to 10% of a flame retardant such as a sodium borate or boric acid.
Inventors
- 👤 Vincent de Paul Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:08
CPC Classifications
F; F16; F16L; F16L57/00; F16L57/04; C; C09; C09D; C09D5/00; C09D5/02; F24; F24F; F24F13/00; F24F13/02; F24F2221/00; F24F2221/30
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
110 words
A coating composition for use on fibrous glass thermal insulation comprising an aqueous dispersion of coating solids, said solids, by weight, consisting essentially of: a. 70 to 90% of a flame retardant filler selected from the group consisting of aluminum hydrate or magnesium hydrate or a combination thereof; b. 5 to 20% of a binder selected from the group consisting of a latex of a copolymer of vinyl acetate and butyl acrylate, a copolymer of vinyl acetate and ethylene or a combination thereof; and c. 1 to 10% of a water soluble fire retardant borate selected from the group consisting of sodium borate or boric acid or a combination thereof.
Claim 2
Dependent Claim
110 words
A coating composition for use on fibrous glass thermal insulation comprising an aqueous dispersion of coating solids, said solids, by weight, consisting essentially of: a. 70 to 90% of a flame retardant filler selected from the group consisting of aluminum hydrate or magnesium hydrate or a combination thereof; b. 5 to 20% of a binder selected from the group consisting of a latex of a copolymer of vinyl acetate and butyl acrylate, a copolymer of vinyl acetate and ethylene or a combination thereof; and c. 1 to 10% of a water soluble fire retardant borate selected from the group consisting of sodium borate or boric acid or a combination thereof.
Claim 3
Dependent Claim
31 words
The coating of claim 1 wherein said filler has a particle size such that, on a dry basis, at least 70% of said filler will pass through a 325 mesh screen.
Claim 4
Dependent Claim
28 words
The coating of claim 1 wherein said composition further comprises 0.1 to 2% of a non-ionic water soluble thickening agent and 0.1 to 2% of 2,3,5,6-tetrachloro-4-(methyl sulfonyl) pyridine.
Claim 5
Dependent Claim
110 words
A coating composition for use on fibrous glass thermal insulation comprising an aqueous dispersion of coating solids, said solids, by weight, consisting essentially of: a. 80 to 85% of a flame retardant filler selected from the group consisting of aluminum hydrate or magnesium hydrate or a combination thereof; b. 10 to 15% of a binder selected from the group consisting of a latex of a copolymer of vinyl acetate and butyl acrylate, a copolymer of vinyl acetate and ethylene or a combination thereof; and c. 2 to 4% of a water soluble fire retardant borate selected from the group consisting of sodium borate or boric acid or a combination thereof.
Claim 6
Dependent Claim
110 words
A coating composition for use on fibrous glass thermal insulation comprising an aqueous dispersion of coating solids, said solids, by weight, consisting essentially of: a. 80 to 85% of a flame retardant filler selected from the group consisting of aluminum hydrate or magnesium hydrate or a combination thereof; b. 10 to 15% of a binder selected from the group consisting of a latex of a copolymer of vinyl acetate and butyl acrylate, a copolymer of vinyl acetate and ethylene or a combination thereof; and c. 2 to 4% of a water soluble fire retardant borate selected from the group consisting of sodium borate or boric acid or a combination thereof.
Claim 7
Dependent Claim
31 words
The coating of claim 4 wherein said filler has a particle size such that, on a dry basis, at least 70% of said filler will pass through a 325 mesh screen.
Claim 8
Dependent Claim
149 words
A coating composition for use on fibrous glass thermal insulation, the insulation being used as the inner air conducting surface of a heating, cooling or ventilating duct; said coating being capable of being applied to the insulation as an aqueous dispersion; and said coating being capable of drying to a flexible layer bonded to said insulation; said coating, by weight, consisting essentially of: a. 70 to 90% of a flame retardant filler selected from the group consisting of aluminum hydrate or magnesium hydrate or a combination thereof; b. 5 to 20% of a binder selected from the group consisting of a latex of a copolymer of vinyl acetate and butyl acrylate, a copolymer of vinyl acetate and ethylene or a combination thereof; and c. 1 to 10% of a water soluble fire retardant borate selected from the group consisting of sodium borate or boric acid or a combination thereof.
Claim 9
Dependent Claim
149 words
A coating composition for use on fibrous glass thermal insulation, the insulation being used as the inner air conducting surface of a heating, cooling or ventilating duct; said coating being capable of being applied to the insulation as an aqueous dispersion; and said coating being capable of drying to a flexible layer bonded to said insulation; said coating, by weight, consisting essentially of: a. 70 to 90% of a flame retardant filler selected from the group consisting of aluminum hydrate or magnesium hydrate or a combination thereof; b. 5 to 20% of a binder selected from the group consisting of a latex of a copolymer of vinyl acetate and butyl acrylate, a copolymer of vinyl acetate and ethylene or a combination thereof; and c. 1 to 10% of a water soluble fire retardant borate selected from the group consisting of sodium borate or boric acid or a combination thereof.
Claim 10
Dependent Claim
36 words
The coating of claim 6 wherein said filler comprises 80 to 85% of said coating, said binder comprises 10 to 15% of said coating and said sodium borate comprises 2 to 4 % of said coating.
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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) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |