US3870737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphates
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1972-07-25
•
Granted: 1975-03-11
•
Expires: 1992-07-25
Abstract
Abstract Complex phosphates of aluminum containing a halogen and chemically-bound molecule of a hydroxy compound, which may be water or an organic hydroxy compound. A typical example is a complex phosphate containing ethyl alcohol having the empirical formula AlPClH25C8O8. They are most conveniently prepared by the reaction of an aluminum halide with the appropriate hydroxy compound and orthophosphoric acid, under relatively cool conditions. The compounds are generally soluble in water and polar organic solvents. They decompose at low temperatures to give aluminum orthophosphate, thereby providing a method for producing aluminum phosphate in many forms, for example, fibers, coatings, binders and fine particles, from a solution in water or organic solvents.
Inventors
- 👤 James Derek Birchall
- 👤 John Edward Cassidy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:47
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/62227; C04B35/62231; C04B35/62268; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/36; C01B25/455; C03; C03C; C03C13/00; C03C13/006; C03C25/00; C03C25/10; C03C25/24; C03C25/38; C03C25/42; C04B12/00; C04B12/02; C04B12/022; C04B35/626; C04B35/63; C04B35/6303; C04B35/6306; C04B35/6309; C09; C09D; C09D1/00; C09J; C09J1/00; C23; C23C; C23C22/00; C23C22/73; C23C22/74; D; D01; D01F; D01F11/00; D01F11/10; D01F11/12; D01F11/14; D01F9/00; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/229; C03C2218/00; C03C2218/10; C03C2218/11; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
73 words
A METHOD OF PREPARING A COMPLEX PHOSPHATE OF ALUMINIUM OTHER THAN A PHOSPHATE ESTER WHEREIN SAID COMPLEX PHOSPHATE CONTAINS AT LEAST ONE CHEMICALLY BOUND MOLECULE OF AN ALCOHOL, WHICH COMPRISES INTERACTING AN ALUMINUM COMPOUND SELECTED FROM THE GROUP CONSISTING ESSENTIALLY OF ALUMINIUM HALIDES, ALUMINUIM OXYHALIDES, ALUMINIUM ALKOXYHALIDES AND ALUMINUIM ALKOXIDES WITH AN ALCOHOL CONTAINING ONE TO TEN CARBON ATOMS AND PHOSPHORIC ACID AND, WHEN THE ALUMINIUM COMPOUND IS AN ALKOXIDE, A HALOGEN ACID.
Claim 2
Independent Claim
73 words
A METHOD OF PREPARING A COMPLEX PHOSPHATE OF ALUMINIUM OTHER THAN A PHOSPHATE ESTER WHEREIN SAID COMPLEX PHOSPHATE CONTAINS AT LEAST ONE CHEMICALLY BOUND MOLECULE OF AN ALCOHOL, WHICH COMPRISES INTERACTING AN ALUMINUM COMPOUND SELECTED FROM THE GROUP CONSISTING ESSENTIALLY OF ALUMINIUM HALIDES, ALUMINUIM OXYHALIDES, ALUMINIUM ALKOXYHALIDES AND ALUMINUIM ALKOXIDES WITH AN ALCOHOL CONTAINING ONE TO TEN CARBON ATOMS AND PHOSPHORIC ACID AND, WHEN THE ALUMINIUM COMPOUND IS AN ALKOXIDE, A HALOGEN ACID.
Claim 3
Independent Claim
73 words
A method of preparing a complex phosphate of aluminium other than a phosphate ester wherein said complex phosphate contains at least one chemically bound molecule of an alcohol, which comprises interacting an aluminum compound selected from the group consisting essentially of aluminium halides, aluminium oxyhalides, aluminium alkoxyhalides and aluminium alkoxides with an alcohol containing one to ten carbon atoms and phosphoric acid and, when the aluminium compound is an alkoxide, a halogen acid.
Claim 4
Independent Claim
73 words
A method of preparing a complex phosphate of aluminium other than a phosphate ester wherein said complex phosphate contains at least one chemically bound molecule of an alcohol, which comprises interacting an aluminum compound selected from the group consisting essentially of aluminium halides, aluminium oxyhalides, aluminium alkoxyhalides and aluminium alkoxides with an alcohol containing one to ten carbon atoms and phosphoric acid and, when the aluminium compound is an alkoxide, a halogen acid.
Claim 5
Dependent Claim
14 words
A method as claimed in claim 1 wherein the aluminium compound is aluminium chloride.
Claim 6
Dependent Claim
24 words
A method as claimed in claim 1 wherein the aluminium halide is added to the alcohol and phosphoric acid reacted with the resultant mixture.
Claim 7
Dependent Claim
21 words
A method as claimed in claim 1 wherein the reaction is carried out at a temperature of from 0* to 50*C.
Claim 8
Dependent Claim
39 words
A method as claimed in claim 1 wherein the complex phosphate is partially hydrolyzed to produce a complex phosphate containing at least one chemically bound molecule of water and at least one chemically bound molecule of the said alcohol.
Claim 9
Dependent Claim
25 words
A method as claimed in claim 5 wherein the complex phosphate used as the starting material is the complex phosphate having the empirical formula AlPClH25C8O8.
Claim 10
Dependent Claim
47 words
A complex phosphate produced by interacting an aluminium compound selected from the group consisting essentially of aluminium halides, aluminium oxyhalides, aluminium alkoxyhalides, aluminium alkoxides, with an alcohol containing one to ten carbon atoms and phosphoric acid and, when the aluminium compound is an alkoxide, a halogen acid.
Claim 11
Dependent Claim
47 words
A complex phosphate produced by interacting an aluminium compound selected from the group consisting essentially of aluminium halides, aluminium oxyhalides, aluminium alkoxyhalides, aluminium alkoxides, with an alcohol containing one to ten carbon atoms and phosphoric acid and, when the aluminium compound is an alkoxide, a halogen acid.
Claim 12
Dependent Claim
17 words
A complex phosphate as claimed in claim 7 wherein the alcohol contains one to four carbon atoms.
Claim 13
Dependent Claim
14 words
A complex phosphate as claimed in claim 8 wherein the alcohol is ethyl alcohol.
Claim 14
Dependent Claim
13 words
A complex phosphate as claimed in claim 7 wherein the halogen is chloride.
Claim 15
Dependent Claim
30 words
A complex phosphate as claimed in claim 7 wherein the ratio of the number of gram atoms of aluminium to the number of gram atoms of phosphorus is substantially 1:1.
Claim 16
Dependent Claim
30 words
A coMplex phosphate as claimed in claim 7 wherein the ratio of the number of gram atoms of aluminium to the number of gram atoms of halogen is substantially 1:1.
Claim 17
Dependent Claim
37 words
A complex phosphate prepared by partially hydrolyzing the complex phosphate produced by claim 1 to produce a complex phosphate containing at least one chemically-bound molecule of water and at least one chemically-bound molecule of the said alcohol.
Claim 18
Dependent Claim
13 words
A complex phosphate as claimed in claim 7 having the empirical formula AlPClH25C8O8.
References Cited (Backward Citations)
US2885417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |