Patent US4425465A successfully refreshed from Google Patents.
US4425465A
Expired / Lapsed
US
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Aqueous coating compositions
Assignee: Imperial Chemical Industries Ltd
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Filing: 1982-09-07
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Granted: 1984-01-10
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Expires: 2002-09-07
Abstract
Abstract An aqueous coating composition for the corrosion-protection and/or fire-protection of substrates comprising a dispersion of chemically delaminated vermiculite lamellae in an aqueous solution or dispersion of a film-forming polymeric binder. Preferably the vermiculite lamellae are of size below 50 microns, especially below 20 microns, and the film-forming polymeric binder is in the form of a colloidal dispersion or emulsion of the polymer in water such as is commonly called a latex.
Inventors
- 👤 John C. Padget
- 👤 Kevin T. McAloon
- 👤 Anthony J. Burgess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:50
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; C09D; C09D5/00; C09D5/18; C04; C04B; C04B26/00; C04B26/02; C04B26/04; C09D5/02; C09D5/024; C09D5/028; C09D5/08; Y; Y10; Y10S; Y10S106/00; Y10S106/03
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
70 words
An aqueous coating composition comprising a dispersion of an inorganic material in an aqueous solution or dispersion of a film-forming polymeric binder, characterised in that the inorganic material comprises vermiculite in the form of lamellae obtained by treating vermiculite with chemicals, swelling the treated vermiculite in water and applying shear to the swollen vermiculite in water to produce an aqueous suspension of tiny particles of thickness less than 1 micron.
Claim 2
Dependent Claim
70 words
An aqueous coating composition comprising a dispersion of an inorganic material in an aqueous solution or dispersion of a film-forming polymeric binder, characterised in that the inorganic material comprises vermiculite in the form of lamellae obtained by treating vermiculite with chemicals, swelling the treated vermiculite in water and applying shear to the swollen vermiculite in water to produce an aqueous suspension of tiny particles of thickness less than 1 micron.
Claim 3
Dependent Claim
21 words
An aqueous coating composition as claimed in claim 1 characterised in that the vermiculite lamellae are of size below 50 microns.
Claim 4
Dependent Claim
23 words
An aqueous coating composition as claimed in claim 1 or 2 characterised in that the vermiculite lamellae are of size below 20 microns.
Claim 5
Dependent Claim
25 words
An aqueous coating composition as claimed in claim 3 characterised in that the major proportion of the vermiculite lamellae are of size below 5 microns.
Claim 6
Dependent Claim
24 words
A coating composition as claimed in claim 1 wherein the inorganic material comprises a mixture of vermiculite and one or more other layer minerals.
Claim 7
Dependent Claim
31 words
A coating composition as claimed in claim 1 wherein the amount of the vermiculite lamellae is up to 95% by weight based on the total weight of solids in the composition.
Claim 8
Dependent Claim
32 words
A coating composition as claimed in claim 6 wherein the amount of the vermiculite lamellae is from 20% to 80% by weight based on the total weight of solids in the composition.
Claim 9
Dependent Claim
26 words
A coating composition as claimed in claim 1 wherein the film-forming polymeric binder is in the form of a dispersion of the polymeric binder in water.
Claim 10
Dependent Claim
41 words
A coating composition as claimed in claim 1 wherein the film-forming polymeric binder is a copolymer of vinyl chloride, vinylidene chloride and one or more alkyl acrylates or alkyl methacrylates having from 1 to 12 carbon atoms in the alkyl group.
Claim 11
Dependent Claim
22 words
A coating composition as claimed in claim 9 wherein the copolymer is also of one or more aliphatic alpha-beta unsaturated carboxylic acids.
Claim 12
Dependent Claim
28 words
A coating composition as claimed in claim 1 which contains a stabilising surface active agent to inhibit flocculation of one or more of the components of the composition.
Claim 13
Independent Claim
74 words
A method for the production of an aqueous coating composition which comprises incorporating an inorganic material in a solution or dispersion of a film-forming polymeric binder characterised in that the inorganic material is vermiculite in the form of lamellae obtained by treating vermiculite with chemicals, swelling the treated vermiculite in water and applying shear to the swollen vermiculite in water to produce an aqueous suspension of tiny particles of thickness less than 1 micron.
Claim 14
Independent Claim
74 words
A method for the production of an aqueous coating composition which comprises incorporating an inorganic material in a solution or dispersion of a film-forming polymeric binder characterised in that the inorganic material is vermiculite in the form of lamellae obtained by treating vermiculite with chemicals, swelling the treated vermiculite in water and applying shear to the swollen vermiculite in water to produce an aqueous suspension of tiny particles of thickness less than 1 micron.
Claim 15
Dependent Claim
30 words
A method as claimed in claim 12 wherein the vermiculite lamellae are added in the form of an aqueous suspension to a solution or dispersion of the film-forming polymeric binder.
Claim 16
Dependent Claim
39 words
A method as claimed in claim 13 wherein prior to addition to the solution or dispersion of the polymeric binder, the suspension of vermiculite lamellae is treated to eliminate from it all particles of size greater than 50 microns.
Claim 17
Dependent Claim
17 words
Use of the coating composition claimed in claim 1 for imparting corrosion-protection and/or fire protection to substrates.
Claim 18
Dependent Claim
18 words
An article comprising a substrate having thereon a coating derived from a composition as claimed in claim 1.
Claim 19
Dependent Claim
14 words
An article as claimed in claim 16 wherein the substrate is a metallic substrate.
Claim 20
Dependent Claim
14 words
An article as claimed in claim 16 wherein the substrate is an organic foam.
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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) | 1987-01-09 | 1987-07-11 | 1988-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-09 | 1991-07-11 | 1992-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-09 | 1995-07-11 | 1996-01-10 | $7700.00 | Window Closed / Lapsed |