US4169104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing salts of esters of pentavalent antimony
Assignee: HARSHAW/FILTROL PARTNERSHIP A PARTNERSHIP OF
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Filing: 1978-03-27
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Granted: 1979-09-25
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Expires: 1998-03-27
Abstract
Abstract A method of preparing esters and salts of esters of pentavalent antimony from hydrated metal antimonates is disclosed. The method comprises heating a mixture of a hydrated metal antimonate and an organic compound selected from the group consisting of (i) a polyhydroxy or a polymercapto compound containing vicinal hydroxy or mercapto groups, or a mixture of the two groups, (ii) an alpha-hydroxy or alpha-mercapto carboxylic acid or thiocarboxylic acid, and (iii) glyoxal, To a temperature sufficient to form the salt of the ester. The salts which are prepared in this manner are effective flame retardants for cotton and other organic polymers.
Inventors
- 👤 Gerald D. Burt
- 👤 Anton Mudrak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:16
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/59; C07; C07F; C07F15/00; C07F15/02; C07F15/025; C07F15/04; C07F15/045; C07F15/06; C07F15/065; C07F9/00; C07F9/90; C07F9/902
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
77 words
A method of preparing esters of pentavalent antimony which comprises the steps of (a) preparing a mixture of a hydrated metal antimonate and an organic compound selected from the group consisting of (i) a polyhydroxy or a polymercapto compound containing vicinal hydroxy or mercapto groups, or a mixture of the two groups, (ii) An alpha-hydroxy or alpha-mercapto carboxylic or thiocarboxylic acid, and (iii) glyoxal, and (b) heating the mixture to a temperature sufficient to form the ester.
Claim 2
Independent Claim
77 words
A method of preparing esters of pentavalent antimony which comprises the steps of (a) preparing a mixture of a hydrated metal antimonate and an organic compound selected from the group consisting of (i) a polyhydroxy or a polymercapto compound containing vicinal hydroxy or mercapto groups, or a mixture of the two groups, (ii) An alpha-hydroxy or alpha-mercapto carboxylic or thiocarboxylic acid, and (iii) glyoxal, and (b) heating the mixture to a temperature sufficient to form the ester.
Claim 3
Dependent Claim
20 words
The method of claim 1 wherein the organic compound in the mixture contains from 2 to about 6 carbon atoms.
Claim 4
Dependent Claim
15 words
The method of claim 1 wherein the metal antimonate is a hydrated alkali metal antimonate.
Claim 5
Dependent Claim
25 words
The method of claim 1 wherein the organic compound is a polyhydroxy compound containing vicinal hydroxy groups and from 2 to about 6 carbon atoms.
Claim 6
Dependent Claim
22 words
The method of claim 1 wherein the organic compound is an alpha-hydroxy carboxylic acid containing from 2 to about 6 carbon atoms.
Claim 7
Dependent Claim
11 words
The method of claim 1 wherein the mixture also contains water.
Claim 8
Dependent Claim
22 words
The method of claim 1 wherein the molar ratio of organic compound to metal antimonate in the mixture is at least 3:1.
Claim 9
Dependent Claim
12 words
The method of claim 4 wherein the polyhydroxy compound is ethylene glycol.
Claim 10
Dependent Claim
19 words
The method of claim 2 wherein the metal antimonate is sodium antimonate and the organic compound is ethylene glycol.
Claim 11
Dependent Claim
57 words
Metal salts of antimony esters having the formula ##STR4## wherein M is copper, nickel, iron or cobalt, X and X 2 are each independently O or S, and R 1 , r 2 , r 3 and R 4 are each independently hydrogen, alkyl, hydroxy-alkyl, mercaptoalkyl or two of the R groups taken together may be ═O.
Claim 12
Dependent Claim
57 words
Metal salts of antimony esters having the formula ##STR4## wherein M is copper, nickel, iron or cobalt, X and X 2 are each independently O or S, and R 1 , r 2 , r 3 and R 4 are each independently hydrogen, alkyl, hydroxy-alkyl, mercaptoalkyl or two of the R groups taken together may be ═O.
Claim 13
Dependent Claim
24 words
Metallic salts of claim 10 having the formula ##STR5## wherein M is copper, nickel, iron or cobalt, and R is hydrogen, methyl or hydroxymethyl.
Claim 14
Dependent Claim
9 words
The salts of claim 11 wherein R is hydrogen.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-24 | 1983-03-26 | 1983-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-24 | 1987-03-26 | 1987-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-24 | 1991-03-26 | 1991-09-25 | $7700.00 | Window Closed / Lapsed |