US4313976A
Expired / Lapsed
US
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Composition and process for coloring and preserving wood
Assignee: Osmose Wood Preserving Inc
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Filing: 1980-06-13
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Granted: 1982-02-02
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Expires: 2000-06-13
Abstract
Abstract Method and composition for simultaneously coloring and preserving wood by a single application of a contacting solution comprising any one of several known water soluble chemical preservatives containing any or all of the following heavy metals: copper, chromium and zinc, to which preservative solution has been added one or more specific naphthalene or benzene derivative compounds having hydroxy, amino or sulfonic acid functional groups attached to a ring carbon atom. Without departing from the teachings of this invention the wood may first be treated with the preservative solution and then contacted with the benzene or naphthalene derivative compound. It is also possible to apply the benzene or naphthalene derivative to the wood initially, followed by the application of the preservative solution.
Inventors
- 👤 Robert M. Leach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:35
CPC Classifications
C; C09; C09D; C09D15/00; B; B27; B27K; B27K3/00; B27K3/16; B27K3/22; B27K3/26; B27K3/32; B27K3/34; B27K3/38; B27K3/52; B27K5/00; B27K5/02
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
110 words
A method for treating wood which simultaneously preserves the wood against wood destroying organisms and selectively colors the wood which comprises contacting the wood with an aqueous solution comprising: (a) a water soluble wood preservative containing any or all of the following heavy metals: copper, chromium, and zinc, and (b) one or more water soluble naphthalene derivatives having at least one sulfonyl group, at least one hydroxyl or amino group, and up to two additional groups selected from the group consisting of sulfonyl, hydroxyl and amino, wherein said groups are attached at any position around the naphthalene ring and the total number of said groups is not greater than 4.
Claim 2
Independent Claim
110 words
A method for treating wood which simultaneously preserves the wood against wood destroying organisms and selectively colors the wood which comprises contacting the wood with an aqueous solution comprising: (a) a water soluble wood preservative containing any or all of the following heavy metals: copper, chromium, and zinc, and (b) one or more water soluble naphthalene derivatives having at least one sulfonyl group, at least one hydroxyl or amino group, and up to two additional groups selected from the group consisting of sulfonyl, hydroxyl and amino, wherein said groups are attached at any position around the naphthalene ring and the total number of said groups is not greater than 4.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein at least two of the groups are sulfonyl groups.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein a salt of said naphthalene derivative is used.
Claim 5
Dependent Claim
22 words
The method of claim 1 or 3 wherein the final concentration of said preservative is between about 0.1% and 10.0% by weight.
Claim 6
Dependent Claim
21 words
The method of claim 4 wherein the final concentration of said naphthalene derivative is between about 0.01% and 2.0% by weight.
Claim 7
Dependent Claim
30 words
The method of claim 5 wherein the pH of the aqueous solution is maintained between about 0.5 to 3.0 by the addition of a sufficient quantity of a suitable acid.
Claim 8
Dependent Claim
30 words
The method of claim 5 wherein the pH of the aqueous solution is maintained between about 1.5 to 2.0 by the addition of a sufficient quantity of a suitable acid.
Claim 9
Dependent Claim
15 words
The method of claim 6 wherein the method imparts a brown color to the wood.
Claim 10
Dependent Claim
15 words
The method of claim 6 wherein the method imparts a red color to the wood.
Claim 11
Dependent Claim
43 words
The method of claim 6 wherein the water soluble preservative is CCA-Type C containing about 17.0%-21.0% copper as copper oxide, about 44.5%-50.5% chromium as chromic acid and about 30.0%-38.0% arsenic as arsenic pentoxide, and the water soluble naphthalene derivative is 4,5-dihydroxy-2,7-naphthalene disulfonic acid.
Claim 12
Dependent Claim
44 words
The method of claim 6 wherein the water soluble preservative is CCA-Type C containing about 17.0%-21.0% copper as copper oxide, about 44.5%-50.5% chromium as chromic acid and about 30.0%-38.0% arsenic as arsenic pentoxide, and the water soluble naphthalene derivative is 8-amino-1-naphthol-3,6-disulfonic acid sodium salt.
Claim 13
Dependent Claim
49 words
The method of claim 6 wherein the naphthalene derivatives comprise a mixture of 4,5-dihydroxy-2,7-naphthalene disulfonic acid and 8-amino-1-naphthol-3,6-disulfonic acid sodium salt and the water soluble preservative is CCA-Type C containing about 17.0%-21.0% copper as copper oxide, about 44.5%-50.5% chromium as chromic acid and about 30.0%-38.0% arsenic as arsenic pentoxide.
Claim 14
Dependent Claim
23 words
The method of claim 12 wherein the mixture comprises about 15-70% of 4,5-dihydroxy-2,7-naphthalene disulfonic acid and about 85-30% of 8-amino-1-naphthol-3,6-disulfonic acid sodium salt.
Claim 15
Dependent Claim
102 words
A composition for simultaneously preserving wood against wood destroying organisms and selectively coloring the wood, which comprises an aqueous solution of: (a) a water soluble wood preservative containing any or all of the following heavy metals: copper, chromium, and zinc, and (b) one or more water soluble naphthalene derivatives having at least one sulfonyl group, at least one hydroxyl or amino group, and up to two additional groups selected from the group consisting of sulfonyl, hydroxyl and amino, wherein said groups are attached at any position around the naphthalene ring and the total number of said groups is not greater than 4.
Claim 16
Dependent Claim
102 words
A composition for simultaneously preserving wood against wood destroying organisms and selectively coloring the wood, which comprises an aqueous solution of: (a) a water soluble wood preservative containing any or all of the following heavy metals: copper, chromium, and zinc, and (b) one or more water soluble naphthalene derivatives having at least one sulfonyl group, at least one hydroxyl or amino group, and up to two additional groups selected from the group consisting of sulfonyl, hydroxyl and amino, wherein said groups are attached at any position around the naphthalene ring and the total number of said groups is not greater than 4.
Claim 17
Dependent Claim
15 words
The composition of claim 14 wherein at least two of the groups are sulfonyl groups.
Claim 18
Dependent Claim
14 words
The composition of claim 14 wherein a salt of said naphthalene derivative is used.
Claim 19
Dependent Claim
22 words
The composition of claim 14 or 16 wherein the final concentration of said preservative is between about 0.1% and 10.0% by weight.
Claim 20
Dependent Claim
21 words
The composition of claim 17 wherein the final concentration of said naphthalene derivative is between about 0.01% and 2.0% by weight.
Claim 21
Dependent Claim
30 words
The composition of claim 18 wherein the pH of the aqueous solution is maintained between about 0.5 to 3.0 by the addition of a sufficient quantity of a suitable acid.
Claim 22
Dependent Claim
26 words
The composition of claim 18 wherein the pH of the aqueous solution is maintained between about 1.5 to 2.0 by the addition of a suitable acid.
Claim 23
Dependent Claim
13 words
The composition of claim 19 which imparts a red color to the wood.
Claim 24
Dependent Claim
13 words
The composition of claim 19 which imparts a brown color to the wood.
Claim 25
Dependent Claim
43 words
The composition of claim 19 wherein the water soluble preservative is CCA-Type C, containing about 17.0%-21.0% copper as copper oxide, about 44.5%-50.5% chromium as chromic acid and about 30.0%-38.0% arsenic as arsenic pentoxide, and the water soluble naphthalene derivative is 4,5-dihydroxy-2,7-naphthalene disulfonic acid.
Claim 26
Dependent Claim
44 words
The composition of claim 19 wherein the water soluble preservative is CCA-Type C, containing about 17.0%-21.0% copper as copper oxide, about 44.5%-50.5% chromium as chromic acid and about 30.0%-38.0% arsenic as arsenic pentoxide, and the water soluble naphthalene derivative is 8-amino-1-naphthol-3,6-disulfonic acid sodium salt.
Claim 27
Dependent Claim
50 words
The composition of claim 19 wherein the naphthalene derivatives comprise a mixture of 4,5-dihydroxy-2,7-naphthalene disulfonic acid and 8-amino-1-naphthol-3,6 disulfonic acid sodium salt and the water soluble preservative is CCA-Type C containing about 17.0%-21.0% copper as copper oxide, about 44.5%-50.5% chromium as chromic acid and about 30.0%-38.0% arsenic as arsenic pentoxide.
Claim 28
Dependent Claim
23 words
The composition of claim 25 wherein the mixture comprises about 15-70% of 4,5-dihydroxy-2,7-naphthalene disulfonic acid and about 85-30% of 8-amino-1-naphthol-3,6-disulfonic acid sodium salt.
Claim 29
Independent Claim
122 words
A method for treating wood which imparts color to the wood and preserves the wood from wood destroying organisms, comprising: (a) first, contacting the wood surface with an aqueous derivative solution comprising one or more water soluble naphthalene derivatives having at least one sulfonyl group, at least one hydroxyl or amino group, and up to two additional groups selected from the group consisting of sulfonyl, hydroxyl and amino, wherein said groups are attached at any position around the naphthalene ring and the total number of said groups is not greater than 4, and (b) second, contacting the wood surface with an aqueous preservative solution comprising a water soluble preservative containing any or all of the following heavy metals: copper, chromium and zinc.
Claim 30
Independent Claim
122 words
A method for treating wood which imparts color to the wood and preserves the wood from wood destroying organisms, comprising: (a) first, contacting the wood surface with an aqueous derivative solution comprising one or more water soluble naphthalene derivatives having at least one sulfonyl group, at least one hydroxyl or amino group, and up to two additional groups selected from the group consisting of sulfonyl, hydroxyl and amino, wherein said groups are attached at any position around the naphthalene ring and the total number of said groups is not greater than 4, and (b) second, contacting the wood surface with an aqueous preservative solution comprising a water soluble preservative containing any or all of the following heavy metals: copper, chromium and zinc.
Claim 31
Dependent Claim
15 words
The method of claim 27 wherein at least two of the groups are sulfonyl groups.
Claim 32
Dependent Claim
19 words
The method of claim 27 wherein a salt of said naphthalene derivative is used to make the derivative solution.
Claim 33
Dependent Claim
25 words
The method of claim 27 or 29 wherein the concentration of the preservative in said preservative solution is between about 0.1% and 10.0% by weight.
Claim 34
Dependent Claim
24 words
The method of claim 30 wherein the concentration of the naphthalene derivative in said derivative solution is between about 0.01% and 2.0% by weight.
Claim 35
Dependent Claim
18 words
The method of claim 31 wherein the pH of said derivative solution is maintained between 2.0 and 11.0.
Claim 36
Independent Claim
122 words
A method for treating wood which imparts color to the wood and preserves the wood from wood destroying organisms comprising: (a) first, contacting the wood surface with an aqueous preservative solution of a water soluble preservative containing any or all of the following heavy metals: copper, chromium and zinc, and (b) second, contacting the wood surface with an aqueous derivative solution of one or more water soluble naphthalene derivatives having at least one sulfonyl group, at least one hydroxyl or amino group, and up to two additional groups selected from the group consisting of sulfonyl, hydroxyl and amino, wherein said groups are attached at any position around the naphthalene ring and the total number of said groups is not greater than 4.
Claim 37
Independent Claim
122 words
A method for treating wood which imparts color to the wood and preserves the wood from wood destroying organisms comprising: (a) first, contacting the wood surface with an aqueous preservative solution of a water soluble preservative containing any or all of the following heavy metals: copper, chromium and zinc, and (b) second, contacting the wood surface with an aqueous derivative solution of one or more water soluble naphthalene derivatives having at least one sulfonyl group, at least one hydroxyl or amino group, and up to two additional groups selected from the group consisting of sulfonyl, hydroxyl and amino, wherein said groups are attached at any position around the naphthalene ring and the total number of said groups is not greater than 4.
Claim 38
Dependent Claim
15 words
The method of claim 33 wherein at least two of the groups are sulfonyl groups.
Claim 39
Dependent Claim
19 words
The method of claim 33 wherein a salt of said naphthalene derivative is used to make the derivative solution.
Claim 40
Dependent Claim
25 words
The method of claim 33 or 35 wherein the concentration of said preservative in the preservative solution is between about 0.1% and 10.0% by weight.
Claim 41
Dependent Claim
24 words
The method of claim 36 wherein the concentration of said naphthalene derivative in the derivative solution is between about 0.01% and 2.0% by weight.
Claim 42
Dependent Claim
18 words
The method of claim 37 wherein the pH of said derivative solution is maintained between 2.0 and 11.0.
Claim 43
Dependent Claim
32 words
The method of claim 6 wherein the aqueous solution is applied to the wood by a vacuum/pressure process, followed by drying the wood to a moisture content of about 20% or less.
Claim 44
Dependent Claim
19 words
The method of claim 6 wherein the aqueous solution is applied to the wood using the full cell process.
Claim 45
Dependent Claim
19 words
The method of claim 6 wherein the aqueous solution is applied to the wood using the empty cell process.
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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) | 1985-02-01 | 1985-08-03 | 1986-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-01 | 1989-08-03 | 1990-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-01 | 1993-08-03 | 1994-02-02 | $7700.00 | Window Closed / Lapsed |