US4588634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating formulation for inorganic fiber mat based bituminous roofing shingles
Assignee: Flintkote Co
•
Filing: 1985-01-09
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Granted: 1986-05-13
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Expires: 2005-01-09
Abstract
Abstract An all-weather inorganic fiber mat based roofing shingle is prepared using a novel bituminous coating formulation comprising a partially air blown asphalt combined with a styrenic elastomer and mineral stabilizer, which formulation more particularly comprises about 3 to 80% elastomeric polymer composition, 10 to 87% bituminous composition and 10 to 87% mineral stabilizer. In another embodiment, improved low and high temperature pliability and strength properties are also attained by blending recycled rubber or reclaimed rubber into the basic formulation which thereby comprises about 1 to 74% elastomeric polymer composition, 10 to 83% bituminous composition, 15 to 88% mineral stabilizer and about 1 to 74% recycled or reclaimed rubber.
Inventors
- 👤 Charles A. Pagen
- 👤 George Stepien, Jr.
- 👤 Paul A. Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:33
CPC Classifications
D; D06; D06N; D06N5/00; E; E04; E04D; E04D1/00; E04D1/12; E04D1/20; E04D5/00; E04D5/10; C; C08; C08L; C08L95/00; C09; C09D; C09D195/00; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2221; Y10T442/2254
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
70 words
A roofing shingle, comprising a substrate and a coating formulation applied thereto, wherein said substrate is an inorganic fiber mat and said coating formulation comprises: (a) about 1% to 74% of an elastomeric polymer composition, said polymer being block polymerized; (b) about 10% to 83% of a bitumen composition; (c) about 15% to 88% of a mineral stabilizer; and (d) about 1% to 74% of a recycled or reclaimed rubber.
Claim 2
Dependent Claim
17 words
A roofing shingle according to claim 1, wherein the inorganic fiber mat is a glass fiber mat.
Claim 3
Dependent Claim
52 words
A roofing shingle according to claim 1, wherein said coating formulation comprises: (a) about 2% to 10% of an elastomeric polymer composition: (b) about 30% to 40% of a bitumen composition; (c) about 25% to 60% of a mineral stabilizer; and (d) about 2% to 10% of a recycled or reclaimed rubber.
Claim 4
Dependent Claim
16 words
A roofing shingle according to claim 3, wherein the elastomeric polymer composition is a styrenic elastomer.
Claim 5
Dependent Claim
18 words
A roofing shingle according to claim 3, wherein the bitumen composition is saturant asphalt or aromatic process oils.
Claim 6
Dependent Claim
14 words
A roofing shingle according to claim 3, wherein the mineral stabilizer is trap rock.
Claim 7
Dependent Claim
31 words
A roofing shingle according to claim 3, wherein said coating formulation comprises about 2.1% recycled rubber, about 3.2% styrenic elastomer, about 37.2% saturant asphalt and about 57.5% trap rock dust stabilizer.
Claim 8
Independent Claim
73 words
A method of forming a roofing shingle, comprising the steps of: providing a substrate of an inorganic fiber mat; and applying a coating formulation to said substrate comprising: (a) about 1% to 74% of an elastomeric polymer composition, said polymer being block polymerized; (b) about 10% to 83% of a bitumen composition; (c) about 15% to 88% of a mineral stabilizer; and (d) about 1% to 74% of a recycled or reclaimed rubber.
Claim 9
Dependent Claim
52 words
A method as defined in claim 8, wherein said coating formulation comprises: (a) about 2% to 10% of an elastomeric polymer composition; (b) about 30% to 40% of a bitumen composition; (c) about 25% to 60% of a mineral stabilizer; and (d) about 2% to 10% of a recycled or reclaimed rubber.
Claim 10
Dependent Claim
31 words
A roofing shingle according to claim 9, wherein said coating formulation comprises about 2.1% recycled rubber, about 3.2% styrenic elatomer, about 37.2% saturant asphalt, and about 57.5% trap rock dust stabilizer.
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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) | 1989-05-12 | 1989-11-11 | 1990-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-12 | 1993-11-11 | 1994-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-12 | 1997-11-11 | 1998-05-13 | $7700.00 | Window Closed / Lapsed |