Patent US4142009A successfully refreshed from Google Patents.
US4142009A
Expired / Lapsed
US
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Method of treating timber with composition having a colloidal pigment
Assignee: Fosroc International Ltd
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Filing: 1977-05-24
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Granted: 1979-02-27
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Expires: 1997-05-24
Abstract
Abstract An agent for stabilization of a decorative finish is incorporated in a timber preservative composition comprising a preservative e.g. fungicide, insecticide or fire retardant in an organic solvent e.g. white spirit, chlorinated hydrocarbon such as methylene chloride or a liquified butane or propane for use in a double vacuum treatment of the timber. The agent may be an alkyd resin or colloidal pigment of a defined mean particle size, or both.
Inventors
- 👤 Colin T. Kyte
- 👤 Geoffrey J. Lewis
- 👤 Edgar Pearce
- 👤 Keith Hume
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:54
CPC Classifications
B; B27; B27K; B27K5/00; B27K5/02; B27K3/00; B27K3/007; B27K3/02; B27K3/0278; B27K3/08; B27K3/34; B27K3/50; B27K2240/00; B27K2240/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
150 words
A method of treating timber comprising subjecting the timber to a first vacuum, applying a liquid organic preservative composition to the timber, optionally applying a positive pressure to the liquid composition, said vacuum and said pressure being applied in a sufficient amount and for a sufficient time to permit the liquid composition ot penetrate the timber on all surfaces thereof, said liquid composition comprising a preservative composition in an organic solvent and a colloidal pigment being present in the preservative composition in an amount from about 3% to about 25% by weight, said colloidal pigment having a mean particle diameter size in the range of about 0.02 micron to about 1 micron, said colloidal pigment being present in an amount sufficient to enhance the grain pattern of the timber, removing the liquid composition, applying a second vacuum to the timber to remove excess liquid composition and releasing the second vacuum.
Claim 2
Independent Claim
150 words
A method of treating timber comprising subjecting the timber to a first vacuum, applying a liquid organic preservative composition to the timber, optionally applying a positive pressure to the liquid composition, said vacuum and said pressure being applied in a sufficient amount and for a sufficient time to permit the liquid composition ot penetrate the timber on all surfaces thereof, said liquid composition comprising a preservative composition in an organic solvent and a colloidal pigment being present in the preservative composition in an amount from about 3% to about 25% by weight, said colloidal pigment having a mean particle diameter size in the range of about 0.02 micron to about 1 micron, said colloidal pigment being present in an amount sufficient to enhance the grain pattern of the timber, removing the liquid composition, applying a second vacuum to the timber to remove excess liquid composition and releasing the second vacuum.
Claim 3
Dependent Claim
22 words
A method according to claim 1 in which the content of the colloidal pigment is about 10% to about 20% by weight.
Claim 4
Dependent Claim
23 words
A method according to claim 1 in which the preservative is selected from the group consisting of a fungicide, insecticide and fire retardant.
Claim 5
Dependent Claim
30 words
A method according to claim 1 in which the organic solvent is selected from the group consisting of a petroleum hydrocarbon, a chlorinated hydrocarbon and a liquified butane or propane.
References Cited (Backward Citations)
US3547849A
Cited
US3859046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |