US3993752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wood preservative containing alkali metal cyanides
Assignee: Kop Coat Inc
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Filing: 1969-08-07
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Granted: 1976-11-23
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Expires: 1989-08-07
Abstract
Abstract An alkali metal cyanide added to alkaline borate buffered liquid fungicide concentrates of chlorophenates and organic or inorganic salts of mercury, lead, tin, copper and zinc provides a non-linial enhancement of fungistatic performance when used in the treatment of lumber and veneer and improved stability of the concentrates.
Inventors
- 👤 Robert E. Stutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:39
CPC Classifications
A; A01; A01N; A01N59/00; A01N59/16; A01N59/18; A01N59/20; A01N59/24; B; B27; B27K; B27K3/00; B27K3/52
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
226 words
A wood preservative composition comprising (1) from about 0.001% to 40% by weight of an alkali metal cyanide selected from the group consisting of lithium cyanide, sodium cyanide and potassium cyanide; (2) from about 20% to about 90% by weight of water; (3) from about 0.05% to about 18% by weight of an alkali metal hydroxide selected from the group consisting of lithium hydroxide, sodium hydroxide and potassium hydroxide; (4) from about 1% to about 22% by weight of an alkali metal borate selected from the group consisting of lithium borate, sodium borate and potassium borate; (5) from about 3% to about 15% by weight of an alkanol having from 1 to 4 carbons; (6) from about 3% to about 20% by weight of an organic solvent selected from the group consisting of acetone, methylethyl ketone, ethylene glycol, propylene glycol, glycerol, di-propylene glycol, tri-propylene glycol, ethylene glycol methyl ether, di-ethylene glycol methyl ether, propylene glycol methyl ether and di-propylene glycol methyl ether; (7) from about 5% to about 40% by weight of a halogenated phenol and (8) from about 0.005% to about 5% by weight of a heavy metal salt or oxide selected from the group consisting of inorganic and organic salts of mercury, lead, tin, copper, zinc, cadmium, arsenic, antimony and silver, and oxides of mercury, lead, tin, copper, zinc, cadmium, arsenic, antimony and silver.
Claim 2
Dependent Claim
226 words
A wood preservative composition comprising (1) from about 0.001% to 40% by weight of an alkali metal cyanide selected from the group consisting of lithium cyanide, sodium cyanide and potassium cyanide; (2) from about 20% to about 90% by weight of water; (3) from about 0.05% to about 18% by weight of an alkali metal hydroxide selected from the group consisting of lithium hydroxide, sodium hydroxide and potassium hydroxide; (4) from about 1% to about 22% by weight of an alkali metal borate selected from the group consisting of lithium borate, sodium borate and potassium borate; (5) from about 3% to about 15% by weight of an alkanol having from 1 to 4 carbons; (6) from about 3% to about 20% by weight of an organic solvent selected from the group consisting of acetone, methylethyl ketone, ethylene glycol, propylene glycol, glycerol, di-propylene glycol, tri-propylene glycol, ethylene glycol methyl ether, di-ethylene glycol methyl ether, propylene glycol methyl ether and di-propylene glycol methyl ether; (7) from about 5% to about 40% by weight of a halogenated phenol and (8) from about 0.005% to about 5% by weight of a heavy metal salt or oxide selected from the group consisting of inorganic and organic salts of mercury, lead, tin, copper, zinc, cadmium, arsenic, antimony and silver, and oxides of mercury, lead, tin, copper, zinc, cadmium, arsenic, antimony and silver.
Claim 3
Dependent Claim
206 words
A wood preservative composition comprising (1) from about 0.001% to 40% by weight of an alkali metal cyanide selected from the group consisting of lithium cyanide, sodium cyanide and potassium cyanide; (2) from about 20% to about 90% by weight of water; (3) from about 0.05% to about 18% by weight of an alkali metal hydroxide selected from the group consisting of lithium hydroxide, sodium hydroxide and potassium hydroxide; (4) from about 1% to about 22% by weight of an alkali metal borate selected from the group consisting of lithium borate, sodium borate and potassium borate; (5) from about 3% to about 15% by weight of an alkanol having from 3 to 4 carbons; (6) from about 3% to about 20% by weight of an organic solvent selected from the group consisting of acetone, methylethyl ketone, ethylene glycol, ethylene glycol methyl ether, di-ethylene glycol methyl ether, propylene glycol, glycerol, di-propylene glycol, tri-propylene glycol, propylene glycol methyl ether and di-propylene glycol methyl ether; (7) from about 5% to about 40% by weight of a halogenated phenol and (8) from about 0.005% to about 5% by weight of a mercury compound selected from the group consisting of inorganic salts of mercury, organic salts of mercury and mercuric oxide.
Claim 4
Dependent Claim
206 words
A wood preservative composition comprising (1) from about 0.001% to 40% by weight of an alkali metal cyanide selected from the group consisting of lithium cyanide, sodium cyanide and potassium cyanide; (2) from about 20% to about 90% by weight of water; (3) from about 0.05% to about 18% by weight of an alkali metal hydroxide selected from the group consisting of lithium hydroxide, sodium hydroxide and potassium hydroxide; (4) from about 1% to about 22% by weight of an alkali metal borate selected from the group consisting of lithium borate, sodium borate and potassium borate; (5) from about 3% to about 15% by weight of an alkanol having from 3 to 4 carbons; (6) from about 3% to about 20% by weight of an organic solvent selected from the group consisting of acetone, methylethyl ketone, ethylene glycol, ethylene glycol methyl ether, di-ethylene glycol methyl ether, propylene glycol, glycerol, di-propylene glycol, tri-propylene glycol, propylene glycol methyl ether and di-propylene glycol methyl ether; (7) from about 5% to about 40% by weight of a halogenated phenol and (8) from about 0.005% to about 5% by weight of a mercury compound selected from the group consisting of inorganic salts of mercury, organic salts of mercury and mercuric oxide.
Claim 5
Dependent Claim
15 words
A composition as defined in claim 2 wherein the alkali metal cyanide is sodium cyanide.
Claim 6
Dependent Claim
12 words
A composition as defined in claim 2 wherein the alkanol is isopropanol.
Claim 7
Dependent Claim
15 words
A composition as defined in claim 2 wherein the alkali metal borate is sodium borate.
Claim 8
Dependent Claim
15 words
A composition as defined in claim 2 wherein the mercury compound is phenyl mercuric acetate.
Claim 9
Dependent Claim
15 words
A composition as defined in claim 2 wherein the mercury compound is phenyl mercuric lactate.
Claim 10
Dependent Claim
238 words
A wood product comprising wood contacted with a ready-to-use solution of a stable liquid sapstain concentrate comprising (1) from about 0.001% to 40% by weight of an alkali metal cyanide selected from the group consisting of lithium cyanide, sodium cyanide and potassium cyanide; (2) from about 20% to about 90% by weight of water; (3) from about 0.05% to about 18% by weight of an alkali metal hydroxide selected from the group consisting of lithium hydroxide, sodium hydroxide and potassium hydroxide; (4) from about 1% to about 22% by weight of an alkali metal borate selected from the group consisting of lithium borate, sodium borate and potassium borate; (5) from about 3% to about 15% by weight of an alkanol having from 1 to 4 carbons; (6) from about 3% to about 20% by weight of an organic solvent selected from the group consisting of acetone, methylethyl ketone, ethylene glycol, ethylene glycol methyl ether, di-ethylene glycol methyl ether, propylene glycol, glycerol, di-propylene glycol, tri-propylene glycol, propylene glycol methyl ether and di-propylene glycol methyl ether; (7) from about 5% to about 40% by weight of a halogenated phenol and (8) from about 0.005% to about 5% by weight of a heavy metal salt or oxide selected from the group consisting of inorganic and organic salts of mercury, lead, tin, copper, zinc, cadmium, arsenic, antimony and silver, and oxides of mercury, lead, tin, copper, zinc, cadmium, arsenic, antimony and silver.
Claim 11
Dependent Claim
238 words
A wood product comprising wood contacted with a ready-to-use solution of a stable liquid sapstain concentrate comprising (1) from about 0.001% to 40% by weight of an alkali metal cyanide selected from the group consisting of lithium cyanide, sodium cyanide and potassium cyanide; (2) from about 20% to about 90% by weight of water; (3) from about 0.05% to about 18% by weight of an alkali metal hydroxide selected from the group consisting of lithium hydroxide, sodium hydroxide and potassium hydroxide; (4) from about 1% to about 22% by weight of an alkali metal borate selected from the group consisting of lithium borate, sodium borate and potassium borate; (5) from about 3% to about 15% by weight of an alkanol having from 1 to 4 carbons; (6) from about 3% to about 20% by weight of an organic solvent selected from the group consisting of acetone, methylethyl ketone, ethylene glycol, ethylene glycol methyl ether, di-ethylene glycol methyl ether, propylene glycol, glycerol, di-propylene glycol, tri-propylene glycol, propylene glycol methyl ether and di-propylene glycol methyl ether; (7) from about 5% to about 40% by weight of a halogenated phenol and (8) from about 0.005% to about 5% by weight of a heavy metal salt or oxide selected from the group consisting of inorganic and organic salts of mercury, lead, tin, copper, zinc, cadmium, arsenic, antimony and silver, and oxides of mercury, lead, tin, copper, zinc, cadmium, arsenic, antimony and silver.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-23 | 1980-05-24 | 1980-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-23 | 1984-05-24 | 1984-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-23 | 1988-05-24 | 1988-11-23 | $7700.00 | Window Closed / Lapsed |