US3955017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating metal phosphates on organic polymeric substrates
Assignee: Imperial Chemical Industries Ltd
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Filing: 1972-07-17
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Granted: 1976-05-04
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Expires: 1992-07-17
Abstract
Abstract An organic polymer article has a surface coating of a metal phosphate. The coating has a thickness in the range of 0.01 to 5 microns; preferably, the metal phosphate comprises a mixture of iron and titanium orthophosphate, although the metal may be chosen from the elements of a periodic table having an atomic number of 12, 14, 20 to 32, 39 to 50, 56 to 80, 90 or 92. A continuous coating of the metal phosphate is obtained by applying to the organic polymer article a solution of a compound of the metal wherein the solution contains an organic component. The solution is converted to the coating of the metal phosphate by drying.
Inventors
- 👤 Neville Colebourne
- 👤 Nicholas Rolfe
- 👤 Kevin Thomas McAloon
- 👤 Michael Leslie Orton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:19
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/455; C03; C03C; C03C13/00; C03C17/00; C03C17/22; C03C17/23; C03C17/25; C03C17/256; C03C25/00; C03C25/10; C03C25/24; C03C25/38; C04; C04B; C04B28/00; C04B28/34; C04B28/342; C04B41/00; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C07F9/66; C09; C09D; C09D1/00; C09D5/00; C09D5/32; C23; C23C; C23C22/00; C23C22/02; C23C22/03; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/23; C03C2218/00; C03C2218/10; C03C2218/11; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31551; Y10T428/31616; Y10T428/31678; Y10T428/31681; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
214 words
A method of applying a continuous coating consisting essentially of a metal phosphate to the surface of an organic polymer article comprising applying to the surface a liquid composition containing a solution of a. a compound of a metal selected from the group consisting of Mg, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In, Sn, Ba, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pb, Au, Hg, Th and U; and b. an oxyacid of phosphorus or a compound capable of forming such an oxyacid in the solution, the oxyacid being an ortho- or meta-acid of the structure (1) ##EQU5## Where X 1 and X 2 are the same or different and selected from hydrogen, hydroxyl, halide or which have the structure (2) to provide pyrophosphoric acid ##EQU6## wherein the solvent is a solvent for both components (a) and (b) and contains an organic component and the atomic ratio of metal to phosphorus is in the range 1:0.1 to 1:2.9 and converting the coating so formed to a metal phosphate by air-drying or by heating to give a coating of 0.01 to 5 microns thickness.
Claim 2
Independent Claim
214 words
A method of applying a continuous coating consisting essentially of a metal phosphate to the surface of an organic polymer article comprising applying to the surface a liquid composition containing a solution of a. a compound of a metal selected from the group consisting of Mg, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In, Sn, Ba, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pb, Au, Hg, Th and U; and b. an oxyacid of phosphorus or a compound capable of forming such an oxyacid in the solution, the oxyacid being an ortho- or meta-acid of the structure (1) ##EQU5## Where X 1 and X 2 are the same or different and selected from hydrogen, hydroxyl, halide or which have the structure (2) to provide pyrophosphoric acid ##EQU6## wherein the solvent is a solvent for both components (a) and (b) and contains an organic component and the atomic ratio of metal to phosphorus is in the range 1:0.1 to 1:2.9 and converting the coating so formed to a metal phosphate by air-drying or by heating to give a coating of 0.01 to 5 microns thickness.
Claim 3
Dependent Claim
21 words
A method as claimed in claim 1 in which the composition is applied by dip-coating, spraying, or by roller- or brush-coating.
Claim 4
Dependent Claim
24 words
A method as claimed in claim 1 in which the metal compound comprises an iron compound and the oxyacid of phosphorus is orthophosphoric acid.
Claim 5
Dependent Claim
21 words
A method as claimed in claim 1 in which the metal compound comprises a mixture of an iron and titanium compound.
Claim 6
Dependent Claim
21 words
A method as claimed in claim 3 in which the organic polymer is in the form of a sheet or film.
Claim 7
Dependent Claim
15 words
A method as claimed in claim 3 in which the organic polymer is a polyester.
Claim 8
Dependent Claim
14 words
A method as claimed in claim 6 in which the polyester is poly(ethylene terephthalate).
Claim 9
Dependent Claim
14 words
A method as claimed in claim 3 in which the organic polymer is polypropylene.
Claim 10
Dependent Claim
30 words
A method as claimed in claim 1 in which the coating applied to the organic polymer is heated at a temperature of 30°C. to 120°C. to form the metal phosphate.
References Cited (Backward Citations)
US1310841A
Cited
US1434549A
Cited
US2563637A
Cited
US2621333A
Cited
US2786787A
Cited
US3042542A
Cited
US3309218A
Cited
US3274014A
Cited
US3258521A
Cited
US3248251A
Cited
US3278328A
Cited
US3298861A
Cited
US3709723A
Cited
US3650807A
Cited
US3821014A
Cited
US3853591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |