Patent US4258098A successfully refreshed from Google Patents.
US4258098A
Expired / Lapsed
US
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Glass fiber mat with improved binder
Assignee: Building Materials Corp of America
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Filing: 1979-06-06
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Granted: 1981-03-24
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Expires: 1999-06-06
Abstract
Abstract A glass fiber mat having excellent tensile strength and flexibility is provided herein. The mat includes a plurality of glass fibers and a binder therefor which is characterized by comprising about 25% to 90% by weight of a urea-formaldehyde resin and about 10% to 75% by weight of a styrene-butadiene latex copolymer containing about 0.1% to 5% by weight of an acrylamide type monomer.
Inventors
- 👤 Alfredo A. Bondoc
- 👤 Philip A. Cautilli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:37
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/20; C08L61/22; C08L61/24; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/10; C08L9/00; C08L9/06; C08L9/08; D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; D04H1/64; D06; D06N; D06N5/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T442/00; Y10T442/60; Y10T442/69; Y10T442/691
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
70 words
A glass fiber mat having excellent tensile strength and flexibility properties consisting essentially of a plurality of glass fibers and a binder to hold said fibers together, characterized in that said binder comprises about 25% to 90% by weight of urea-formaldehyde resin and about 10% to 75% by weight of a styrene-butadiene latex compolymer containing about 0.1% to 5% by weight of acrylamide, methacrylamide, N-methylolacrylamide, or N-methylolmethacrylamide, or mixtures thereof.
Claim 2
Dependent Claim
70 words
A glass fiber mat having excellent tensile strength and flexibility properties consisting essentially of a plurality of glass fibers and a binder to hold said fibers together, characterized in that said binder comprises about 25% to 90% by weight of urea-formaldehyde resin and about 10% to 75% by weight of a styrene-butadiene latex compolymer containing about 0.1% to 5% by weight of acrylamide, methacrylamide, N-methylolacrylamide, or N-methylolmethacrylamide, or mixtures thereof.
Claim 3
Dependent Claim
29 words
A glass fiber mat according to claim 1 wherein said urea-formaldehyde resin comprises about 50% to 85% and said styrene-butadiene latex copolymer about 15% to 50% of said binder.
Claim 4
Dependent Claim
25 words
A glass fiber mat according to claim 1 wherein said urea-formaldehyde resin comprises about 80% and said styrene-butadiene latex compolymer about 20% of said binder.
Claim 5
Dependent Claim
29 words
A glass fiber mat according to claim 1 wherein said styrene-butadiene latex copolymer comprises about 10% to 90% by weight styrene and about 90% to 10% by weight butadiene.
Claim 6
Dependent Claim
25 words
A glass fiber mat according to claim 1 wherein said styrene-butadiene latex copolymer comprises about 30% to 70% styrene and about 70 to 30% butadiene.
Claim 7
Dependent Claim
28 words
A glass fiber mat according to claim 1 wherein said styrene-butadiene latex copolymer comprises about 40% styrene and 60% butadiene, and about 2% by weight thereof of N-methylolacrylamide.
Claim 8
Dependent Claim
26 words
A glass fiber mat according to claim 1 wherein said acrylamide is present in an amount of about 1% to 4% by weight of said styrene-butadiene.
Claim 9
Dependent Claim
13 words
A glass fiber mat according to claim 1 wherein said binder is cured.
Claim 10
Dependent Claim
26 words
A glass fiber mat according to claim 8 wherein said curing is effected by heating the wet glass mat with binder applied at an elevated temperature.
Claim 11
Dependent Claim
16 words
A glass fiber mat according to claim 1 wherein said urea-formaldehyde resin contains a methylol group.
Claim 12
Dependent Claim
19 words
A glass fiber mat according to claim 1 further characterized by having a porosity sufficient to impregnate asphalt therein.
Claim 13
Dependent Claim
35 words
A method of making an improved glass fiber mat which comprises forming said glass fibers into a wet mat, applying said binder composition of Claim 1 thereto, drying and curing said binder at elevated temperatures.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |