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EP0246757A2
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EP
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Process for forming a coating
Assignee: Unilever PLC
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Filing: 1987-04-22
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Granted: —
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Expires: 2007-04-22
Abstract
Abstract This application discloses the preparation of coatings on substrates. The coating is derived from a film formed at a sol air interface and the film is bonded to the substrate by direct contact. The coating preferably contains silica.
Inventors
- 👤 Michael Joseph Garvey
- 👤 Ian Charles Griffiths
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 20:10
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/25; C04B41/45; C04B41/4505; C04B41/50; C04B41/5025; C04B41/5035; C04B41/80; C04B41/81; C04B41/85; C04B41/87; C23; C23C; C23C24/00; C23D; C23D13/00; G; G11; G11B; G11B5/00; G11B5/84; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/213; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/111; C03C2218/113; C04B2237/00; C04B2237/30; C04B2237/32; C04B2237/36; C04B2237/366
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
58 words
A process for the deposition of a coating on a substrate characterised by generating an interface on a sol containing a surfactant, the amount of surfactant being sufficient to cause a film of colloidal material comprising the sol to form at the interface, and contacting the substrate and film so as to deposit the film onto the substrate.
Claim 2
Dependent Claim
58 words
A process for the deposition of a coating on a substrate characterised by generating an interface on a sol containing a surfactant, the amount of surfactant being sufficient to cause a film of colloidal material comprising the sol to form at the interface, and contacting the substrate and film so as to deposit the film onto the substrate.
Claim 3
Dependent Claim
30 words
A process as claimed in claim 1 in which colloidal material is selected from the group comprising insoluble or sparingly soluble inorganic particles, organic particles, polymeric particles and mixtures thereof
Claim 4
Dependent Claim
17 words
A process as claimed in claim 1 or claim 2 in which the colloidal material includes silica.
Claim 5
Dependent Claim
30 words
A process as claimed in any one of the preceding claims in which the sol includes 0.001 to 30wt% colloidal material with respect to the total weight of the sol.
Claim 6
Dependent Claim
38 words
A process as claimed in any one of the preceding claims in which the sol includes an amount of surfactant less than that required to form a monolayer according to the expression 3/ρrAN moles g⁻¹ as hereinbefore defined.
Claim 7
Dependent Claim
32 words
A process as claimed in any one of the preceding claims in which the sol includes an amount of surfactant in the range of 0.1 to 100mg per gram of colloidal material.
Claim 8
Dependent Claim
35 words
A process as claimed in any one of the preceding claims in which the substrate is drawn through the interface at which the film has formed so as to contact the film and the substrate.
Claim 9
Dependent Claim
43 words
A process as claimed in any one of claims 1 to 6 in which the substrate is in the form of beads and the sol surfactant mixture is raised to immerse the beads at least once to deposit a coating on the beads.
References Cited (Backward Citations)
No citation records indexed.
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