US3898223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of alkali metal salts of dichloroisocyanuric acid
Assignee: Olin Corp
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Filing: 1974-09-04
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Granted: 1975-08-05
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Expires: 1994-09-04
Abstract
Abstract Alkali metal salts of dichloroisocyanuric acid are produced by the reaction of trichloroisocyanuric acid with an alkali metal carbonate in the presence of water. When sodium or lithium carbonates are used, the reaction product is sodium or lithium dichloroisocyanurate dihydrate while potassium carbonate reacts to produce ((monotrichloro) tetra (potassium dichloro)) pentaisocyanurate. The products are useful as bleaching or sanitizing agents.
Inventors
- 👤 John A Wojtowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:28
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30; C07D251/36; C11; C11D; C11D3/00; C11D3/395; C11D3/3955
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
36 words
APROCESS FOR PREPARING AN ALKALI METAL SALT OF DICHLOROISOCYANURIC ACID WHICH COMPRISES REACTING TRICHLOROISCYANURIC ACID WITH AN ALKALI METAL CARBONATE IN THE PRESENCE OF WATER, AND RECOVERING SAID ALKALI METAL SALT OF DICHLOROISOCYANURIC ACID PRODUCED THEREBY.
Claim 2
Dependent Claim
36 words
APROCESS FOR PREPARING AN ALKALI METAL SALT OF DICHLOROISOCYANURIC ACID WHICH COMPRISES REACTING TRICHLOROISCYANURIC ACID WITH AN ALKALI METAL CARBONATE IN THE PRESENCE OF WATER, AND RECOVERING SAID ALKALI METAL SALT OF DICHLOROISOCYANURIC ACID PRODUCED THEREBY.
Claim 3
Dependent Claim
31 words
The process of claim 1 in which the molar ratio of said trichloroisocyanuric acid to the alkali metal component of said alkali metal carbonate is from about 1:0.6 to about 1:2.
Claim 4
Dependent Claim
22 words
The process of claim 2 in which the reaction temperature is in the range from about 0* C. to about 50* C.
Claim 5
Dependent Claim
20 words
The process of claim 3 in which said alkali metal is selected from the group consisting of sodium and potassium.
Claim 6
Dependent Claim
26 words
The process of claim 4 in which said alkali metal carbonate is sodium carbonate and said alkali metal salt of dichloroisocyanuric acid is sodium dichloroisocyanurate dihydrate.
Claim 7
Dependent Claim
28 words
The process of claim 4 in which said alkali metal carbonate is potassium carbonate and said alkali metal salt of dichloroisocyanuric acid is ((monotrichloro) tetra (monopotassium dichloro)) pentaisocyanurate.
Claim 8
Dependent Claim
29 words
The process of claim 4 in which said water is present in a molar ratio of said trichloroisocyanuric acid to said water of from about 1:0.2 to about 1:15.
Claim 9
Dependent Claim
38 words
The process of claim 7 in which the molar ratio of said trichloroisocyanuric acid to said alkali metal is from about 1: 0.8 to about 1:1.2 and said reaction temperature is from about 20* to about 40* C.
Claim 10
Dependent Claim
29 words
The process of claim 8 in which said water is present in a molar ratio of said trichloroisocyanuric acid to said water of from about 1:0.4 to about 1:10.
Claim 11
Dependent Claim
14 words
The process of claim 9 in which said alkali metal carbonate is sodium carbonate.
Claim 12
Dependent Claim
14 words
The process of claim 9 in which said alkali metal carbonate is potassium carbonate.
Claim 13
Dependent Claim
14 words
The process of claim 9 in which said alkali metal carbonate is sodium bicarbonate.
Claim 14
Dependent Claim
14 words
The process of claim 9 in which said alkali metal carbonate is potassium bicarbonate.
Claim 15
Dependent Claim
14 words
The process of claim 9 in which said alkali metal carbonate is lithium carbonate.
Claim 16
Dependent Claim
14 words
The process of claim 9 in which said alkali metal carbonate is lithium bicarbonate.
References Cited (Backward Citations)
US3415823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |