US4113638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frothing composition for gypsum dispersions
Assignee: Atlantic Richfield Co
•
Filing: 1976-08-04
•
Granted: 1978-09-12
•
Expires: 1996-08-04
Abstract
Abstract An improved gypsum dispersion frothing composition is presented comprised of a first component which is a neutralized sulfonic acid or neutralized sulfuric acid ester and a second component which is a neutralized dipropyl benzene sulfonate or a mixture of neutralized alkyl benzene sulfonates containing at least 50% neutralized dipropyl benzene sulfonate. The preferred member of the first component is neutralized alkyl benzene sulfonates having 10 to 14 alkyl carbon atoms, and the preferred second component is neutralized diisopropyl benzene sulfonate. The preferred neutralizing agents are sodium, ammonium ion, or triethanolamine. The frothing composition is preferably used at a concentration of 0.01 to 0.1 parts per 100 parts of gypsum.
Inventors
- 👤 Robert Coleman Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:44
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/16; C04B24/20
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
96 words
A frothing composition useful for preparing aqueous gypsum dispersions comprising: (a) about 50 to 95 parts by weight of a first component which is a neutralized alkylaryl sulfonic acid having an average of about 10 to 14 alkyl carbon atoms, and (b) about 5 to 50 parts by weight of a second component which is a neutralized dipropyl benzene sulfonic acid or a mixture of neutralized alkylbenzene sulfonic acids containing at least 50% by weight of neutralized dipropyl benzene sulfonic acid and having an average alkyl carbon content of about 4.5 to 8 atoms per molecule.
Claim 2
Dependent Claim
96 words
A frothing composition useful for preparing aqueous gypsum dispersions comprising: (a) about 50 to 95 parts by weight of a first component which is a neutralized alkylaryl sulfonic acid having an average of about 10 to 14 alkyl carbon atoms, and (b) about 5 to 50 parts by weight of a second component which is a neutralized dipropyl benzene sulfonic acid or a mixture of neutralized alkylbenzene sulfonic acids containing at least 50% by weight of neutralized dipropyl benzene sulfonic acid and having an average alkyl carbon content of about 4.5 to 8 atoms per molecule.
Claim 3
Dependent Claim
27 words
The frothing composition of claim 1 wherein the first and second components are salts of sodium, potassium, lithium, ammonia, magnesium, monoethanolamine, diethanolamine, triethanolamine or mixtures of these.
Claim 4
Dependent Claim
30 words
The frothing composition of claim 2 wherein said first component is a sodium, ammonium, or triethanolamine salt of an alkyl benzene sulfonic acid containing 10 to 14 alkyl carbon atoms.
Claim 5
Dependent Claim
25 words
The frothing composition of claim 3 wherein said neutralized dipropyl benzene sulfonic acid is a sodium, ammonium or triethanolamine salt of diisopropyl benzene sulfonic acid.
Claim 6
Dependent Claim
36 words
The frothing composition of claim 4 wherein said first component is the sodium, ammonium or triethanolamine salt of alkyl benzene sulfonic acid having an average alkyl carbon content of about 11 to 12 atoms per molecule.
Claim 7
Dependent Claim
22 words
The frothing composition of claim 4 wherein said second component is the sodium, ammonium, or triethanolamine salt of sulfonated cumene distillation residue.
Claim 8
Dependent Claim
32 words
The frothing composition of claim 4 wherein said first and second components are present in amounts of about 75 to 95 parts by weight and 5 to 25 parts by weight, respectively.
Claim 9
Dependent Claim
21 words
The frothing composition of claim 4 wherein second component is the sodium, ammonium, or triethanolamine salt of diisopropyl benzene sulfonic acid.
Claim 10
Dependent Claim
24 words
The frothing composition of claim 1 containing water in an amount up to about 75% based on the total weight of the frothing composition.
Claim 11
Dependent Claim
14 words
A frothed gypsum dispersion containing as the frothing agent the composition of claim 3.
Claim 12
Dependent Claim
14 words
A frothed gypsum dispersion containing as the frothing agent the composition of claim 4.
Claim 13
Dependent Claim
14 words
A frothed gypsum dispersion containing as the frothing agent the composition of claim 6.
Claim 14
Dependent Claim
14 words
A frothed gypsum dispersion containing as the frothing agent the composition of claim 8.
References Cited (Backward Citations)
US2318574A
Cited
US3231504A
Cited
US3372040A
Cited
US3577248A
Cited
US3926650A
Cited
US3725090A
Cited
US3912528A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |