US999013A - Process of preparing wood-impregnating liquids. - Google Patents
Process of preparing wood-impregnating liquids. Download PDFInfo
- Publication number
- US999013A US999013A US57385610A US1910573856A US999013A US 999013 A US999013 A US 999013A US 57385610 A US57385610 A US 57385610A US 1910573856 A US1910573856 A US 1910573856A US 999013 A US999013 A US 999013A
- Authority
- US
- United States
- Prior art keywords
- wood
- coal tar
- impregnating
- preparing wood
- substances
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title description 4
- 239000007788 liquid Substances 0.000 title description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 18
- 239000011280 coal tar Substances 0.000 description 13
- 239000000126 substance Substances 0.000 description 11
- 239000002023 wood Substances 0.000 description 10
- 238000009835 boiling Methods 0.000 description 6
- 238000004821 distillation Methods 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000010426 asphalt Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 239000002641 tar oil Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
Definitions
- the tar obtained by destructive distillation of coal contains a large proportion of bituminous substances. If one subjects the coal tar to distillation one can only obtain the substances of low boiling points in an undecomposed state whereas the bituminous substances especially valuable for impregnating wood are decomposed by distillation.
- the distillates obtained by distillation of coal tar show therefore the valuable properties of bitumen only in a small degree if any and are not very suitable for impregnating'wood.
- one may extract the bituminous substances from coal tar by treating it with a certain proportion of low boiling hydrocarbon solvents boiling up to 100 degrees Centigrade; as for instance benzene C H toluene; and may obtain the bituminous substances from the extract by evaporation of the solvent.
- the solution thus obtained may be separated from the undissolved constituents of the coal tar by filtration or decantation.
- the proportion of the solvent suitable for extracting the bituminous substances from coal tar is one liter of benzene to one kilogram of coal tar. From the solution thus obtained one separates the solvent by distillation and obtains as residue a clear oil having the Valuable portions of bitumen soluble in hydrocarbons ,and being very suitable for impregnating wood, and for similar purposes.
- the properties suitable for impregnating wood may be increased by dissolving the bituminous substances extracted from coal tar in coal tar oils of the boiling points between 150 and 300 degrees centigrade.
- the oil thus obtained is proof against low temperatures and does not loose its fluidity. It is completely clear and has no solid undissolved substances which would be detrimental in the impregnation of wood.
- a suitable proportion is to dissolve 1 part by volume of the bituminous substances in 4 parts by volume of the so called heavyoils from coal tar.
- suitable for impregnating-wood which consists in mixing one part of coal tar with up to one part of a hydrocarbon having a boiling point not over degrees centigrade, separating the liquid from the undissolved constituents of the coal tar, evapadding to the remaining residuecoal tar oil's having boiling points between 200- orating the hydrocarbon from the liquid and
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
, Tool-Z whom it may concern:
UNITED s ATEs PATENT OFFICE.
JULI'US nnnits'r, or HALENSEE, NEAR BER-LIN, GERMANY.
PROCESS OF. PREPLBING WOOD-IMPREGNATING LIQQ'IDS.
999,013. No Drawing.
Be it known that I, JULIUS DnHNs'r, a
subject of the King of Prussia and the Gearman Emperor, residing at 15 Joachim Fricdrichstrasse, Halensee, near Berlin, Kingdom of Prussia, German Empire, have invented new and useful Improvements in Processes for Preparing Substances for Impregnating Wood, of which the following is a specification.
The tar obtained by destructive distillation of coal contains a large proportion of bituminous substances. If one subjects the coal tar to distillation one can only obtain the substances of low boiling points in an undecomposed state whereas the bituminous substances especially valuable for impregnating wood are decomposed by distillation. The distillates obtained by distillation of coal tar show therefore the valuable properties of bitumen only in a small degree if any and are not very suitable for impregnating'wood. I have now found that one may extract the bituminous substances from coal tar by treating it with a certain proportion of low boiling hydrocarbon solvents boiling up to 100 degrees Centigrade; as for instance benzene C H toluene; and may obtain the bituminous substances from the extract by evaporation of the solvent. The solution thus obtained may be separated from the undissolved constituents of the coal tar by filtration or decantation. The proportion of the solvent suitable for extracting the bituminous substances from coal tar is one liter of benzene to one kilogram of coal tar. From the solution thus obtained one separates the solvent by distillation and obtains as residue a clear oil having the Valuable portions of bitumen soluble in hydrocarbons ,and being very suitable for impregnating wood, and for similar purposes.
I may proceed in the following way: 1 kilogram of coal tar is mixed with 1 liter of benzene, whereupon a heating to 30 degrees centigrade may be useful. The mix- Specification of Letters Patent. Patented July 25, 1911; Application filed July 26, 1910. Serial No. 573,856.
ture' is filtered and from the clear filtrate, the benzene is evaporated. The residue is a clear product very suitable for impregnating wood. l U
The following table shows the solubility of the bitumen in benzene.
Kilograms of coal tar 1 1 1 1 Liters of benzene Insoluble per cent The properties suitable for impregnating wood may be increased by dissolving the bituminous substances extracted from coal tar in coal tar oils of the boiling points between 150 and 300 degrees centigrade. The oil thus obtained is proof against low temperatures and does not loose its fluidity. It is completely clear and has no solid undissolved substances which would be detrimental in the impregnation of wood. A suitable proportion is to dissolve 1 part by volume of the bituminous substances in 4 parts by volume of the so called heavyoils from coal tar.
The impregnation of Wood by means of the described bituminous substances is effected in the usual way by forcing them into the wood by means of alternate pressure and vacuum.
I cla1m The process of preparing bituminous oils.
suitable for impregnating-wood which consists in mixing one part of coal tar with up to one part of a hydrocarbon having a boiling point not over degrees centigrade, separating the liquid from the undissolved constituents of the coal tar, evapadding to the remaining residuecoal tar oil's having boiling points between 200- orating the hydrocarbon from the liquid and
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US57385610A US999013A (en) | 1910-07-26 | 1910-07-26 | Process of preparing wood-impregnating liquids. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US57385610A US999013A (en) | 1910-07-26 | 1910-07-26 | Process of preparing wood-impregnating liquids. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US999013A true US999013A (en) | 1911-07-25 |
Family
ID=3067341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US57385610A Expired - Lifetime US999013A (en) | 1910-07-26 | 1910-07-26 | Process of preparing wood-impregnating liquids. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US999013A (en) |
-
1910
- 1910-07-26 US US57385610A patent/US999013A/en not_active Expired - Lifetime
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