US4035484A
Expired / Lapsed
US
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Calcium hypochlorite compositions
Assignee: Olin Corp
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Filing: 1976-03-22
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Granted: 1977-07-12
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Expires: 1996-03-22
Abstract
Abstract Novel compositions comprising calcium hypochlorite and a hydrazide of a monocarboxylic acid containing from about 10 to about 24 carbon atoms have been produced. The compositions provide accurately controlled concentrations of available chlorine to bodies of water such as swimming pools by reducing the solubility of the calcium hypochlorite.
Inventors
- 👤 John P. Faust
- 👤 Henry R. Cramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:41
CPC Classifications
C; C09; C09K; C09K3/00; A; A01; A01N; A01N59/00; C01; C01B; C01B11/00; C01B11/04; C01B11/06; C01B11/064; C02; C02F; C02F1/00; C02F1/72; C02F1/76
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
23 words
A coherent solid composition comprising calcium hypochlorite and a hydrazide of a monocarboxylic acid containing from about 10 to about 24 carbon atoms.
Claim 2
Dependent Claim
23 words
A coherent solid composition comprising calcium hypochlorite and a hydrazide of a monocarboxylic acid containing from about 10 to about 24 carbon atoms.
Claim 3
Dependent Claim
28 words
The coherent solid composition of claim 1 in which the proportion of said hydrazide is from about 0.01 to about 10 percent by weight of said calcium hypochlorite.
Claim 4
Dependent Claim
21 words
The coherent solid composition of claim 1 in which said monocarboxylic acid contains from about 12 to about 20 carbon atoms.
Claim 5
Dependent Claim
28 words
The coherent solid composition of claim 3 in which said proportion of said hydrazide is from about 0.5 to about 3.0 percent by weight of said calcium hypochlorite.
Claim 6
Dependent Claim
15 words
The coherent solid composition of claim 4 in which said hydrazide is stearic acid hydrazide.
Claim 7
Dependent Claim
16 words
The coherent solid composition of claim 1 in which the form is a pellet or tablet.
Claim 8
Dependent Claim
14 words
The coherent solid composition of claim 5 in which said form is a tablet.
Claim 9
Dependent Claim
25 words
The coherent solid composition of claim 1 in which said calcium hypochlorite contains from about 50 to about 80 percent by weight of Ca(OCl).sub. 2.
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) | 1980-07-11 | 1981-01-10 | 1981-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-11 | 1985-01-10 | 1985-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-11 | 1989-01-10 | 1989-07-12 | $7700.00 | Window Closed / Lapsed |