GB886884A - Improvements in rubberized blown asphalt and method for making same - Google Patents
Improvements in rubberized blown asphalt and method for making sameInfo
- Publication number
- GB886884A GB886884A GB2100960A GB2100960A GB886884A GB 886884 A GB886884 A GB 886884A GB 2100960 A GB2100960 A GB 2100960A GB 2100960 A GB2100960 A GB 2100960A GB 886884 A GB886884 A GB 886884A
- Authority
- GB
- United Kingdom
- Prior art keywords
- asphalt
- rubber
- blown
- specifications
- steam
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C3/00—Working-up pitch, asphalt, bitumen
- C10C3/02—Working-up pitch, asphalt, bitumen by chemical means reaction
- C10C3/04—Working-up pitch, asphalt, bitumen by chemical means reaction by blowing or oxidising, e.g. air, ozone
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
Rubberized asphaltic compositions, for use as fillers in road building, waterproofing or paper laminants where good low-temperature properties are desired, consist of an asphalt blown to a softening-point of from 80 DEG to 165 DEG F. and rubber solids (e.g. 0,1% to 10% by weight based on the weight of asphalt) such as neoprene, butadienestyrene copolymers or natural rubber. The compositions are produced by air blowing (e.g. at 400 DEG -450 DEG F.) an asphalt flux, such as derived from natural or cracked, straight-run or vacuum-reduced asphalts, and having a viscosity of from 40 to 300 SFS at 210 DEG F., in the absence of any catalyst, to the above mentioned softening-point, and interblending the resultant blown asphalt with the rubber by introducing it, preferably by injecting it, in the form of an aqueous latex, into a hot (e.g. 450 DEG -600 DEG F.) molten highly fluid body of the blown asphalt, preferably flowing at a constant rate in a confined stream, so that the latex-water is flashed into steam upon contact with the asphalt causing vigorous agitation, whereby the rubber is intimately dispersed, and causing a sudden lowering of the temperature of the resultant mixture to below that (but not below 325 DEG F., preferably 350 DEG -400 DEG F.) at which the rubber is deleteriously affected, prior to the mixture being discharged into an open vessel where the steam may escape. Specifications 886,883, 886,885 and U.S.A. Specifications 2,921,105 and 2,921,313 are referred to.ALSO:Rubberised asphaltic compositions, for use as fillers in road building, waterproofing or paper laminants where good low-temperature properties are desired, consist of an asphalt blown to a softening-point of from 80 DEG to 165 DEG F. and rubber solids (e.g. 0,1% to 10% by weight based on the weight of asphalt) such as neoprene, butadiene-styrene copolymers (GRS) or nuatral rubbers. The compositions are produced by air blowing (e.g. at 400 DEG -450 DEG F.) an asphalt flux, such as derived from natural or cracked, straight -run or vacuum-reduced asphalts, and having a viscosity of from 40 to 400 SFS at 210 DEG F., in the absence of any catalyst, to the above mentioned softening-point, and interblending the resultant blown asphalt with the rubber by introducing it, preferably by injecting it, in the form of an aqueous latex, into a hot (e.g. 450 DEG -600 DEG F.) molten highly fluid body of the blown asphalt, preferably flowing at a constant rate in a confined stream, so that the latex-water is flashed into steam upon contact with the asphalt causing vigorous agitation, whereby the rubber is intimately dispersed, and causing a sudden lowering of the temperature of the resultant mixture to below that (but not below 325 DEG F., preferably 350 DEG -400 DEG F.) at which the rubber is deleteriously affected, prior to the mixture being discharged into an open vessel where the steam may escape. Specifications 886,883, 886,885 and U.S.A. Specifications 2,921,105 and 2,921,313 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2100960A GB886884A (en) | 1960-06-15 | 1960-06-15 | Improvements in rubberized blown asphalt and method for making same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2100960A GB886884A (en) | 1960-06-15 | 1960-06-15 | Improvements in rubberized blown asphalt and method for making same |
Publications (1)
Publication Number | Publication Date |
---|---|
GB886884A true GB886884A (en) | 1962-01-10 |
Family
ID=10155637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2100960A Expired GB886884A (en) | 1960-06-15 | 1960-06-15 | Improvements in rubberized blown asphalt and method for making same |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB886884A (en) |
-
1960
- 1960-06-15 GB GB2100960A patent/GB886884A/en not_active Expired
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