US3951900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-retardant adhesive
Assignee: National Gypsum Co
•
Filing: 1973-12-26
•
Granted: 1976-04-20
•
Expires: 1993-12-26
Abstract
Abstract A stable adhesive composition containing primarily a styrene-butadiene binder, calcium sulfate dihydrate as a combination filler and fire-retardant, a nonionic wetting agent and a non-phosphate sequestering agent.
Inventors
- 👤 Wesley W. Bath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:42
CPC Classifications
C; C09; C09J; C09J109/00; C09J109/06; C09J109/08; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08L; C08L33/00; C08L9/00; C08L9/06; C08L9/08; D; D06; D06M; D06M17/00; D06M17/04; D06M17/06; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
65 words
A wet adhesive composition comprising a styrene-butadiene latex aqueous emulsion, a finely ground calcium sulfate dihydrate fire-retardant filler, a minor quantity of sodium glucoheptonate sequestering agent, a minor quantity of sodium polyacrylate thickener, and a minor quantity of a nonionic surface active agent, said nonionic surface active agent being present in a ratio of about 1 part for each 100 parts styrene-butadiene latex aqueous emulsion.
Claim 2
Dependent Claim
65 words
A wet adhesive composition comprising a styrene-butadiene latex aqueous emulsion, a finely ground calcium sulfate dihydrate fire-retardant filler, a minor quantity of sodium glucoheptonate sequestering agent, a minor quantity of sodium polyacrylate thickener, and a minor quantity of a nonionic surface active agent, said nonionic surface active agent being present in a ratio of about 1 part for each 100 parts styrene-butadiene latex aqueous emulsion.
Claim 3
Dependent Claim
68 words
A wet adhesive composition as defined in claim 1 having the following formulation: Parts by Weight
______________________________________
Carboxylated styrene-butadiene
latex aqueous emulsion (50% solids)
about 32.30
Alkylaryl polyether alcohol nonionic
surface active agent (70% solution
in water) about .47
Calcium sulfate dihydrate powder
about 56.50
Sodium glucoheptonate sequestering agent
about 0.34
[Non-phosphate]
Sodium polyacrylate thickener (10% solids)
about 0.32
Defoamer about 0.07
Free Water about 10.00.
______________________________________
.
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) | 1979-04-20 | 1979-10-20 | 1980-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-20 | 1983-10-20 | 1984-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-20 | 1987-10-20 | 1988-04-20 | $7700.00 | Window Closed / Lapsed |