BE853210A - BITUMEN-BASED COMPOSITIONS - Google Patents
BITUMEN-BASED COMPOSITIONSInfo
- Publication number
- BE853210A BE853210A BE176393A BE176393A BE853210A BE 853210 A BE853210 A BE 853210A BE 176393 A BE176393 A BE 176393A BE 176393 A BE176393 A BE 176393A BE 853210 A BE853210 A BE 853210A
- Authority
- BE
- Belgium
- Prior art keywords
- emi
- bitumen
- based compositions
- composition
- compositions
- Prior art date
Links
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
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)
- Compositions Of Macromolecular Compounds (AREA)
Description
<EMI ID=1.1>
<EMI ID=2.1>
<EMI ID=3.1> nombre de critères, auxquels le bitume aeul ne peut répondre. Il est dont nécessaire de modifier le bitume pour améliorer plusieurs de ses propriétés,
<EMI ID=4.1>
complétassent dissous dans le bitume; la phase non dissoute précipite et nuit aux propriétés finales de la composition. Pour remédier à cet inconvénient,
<EMI ID=5.1>
une huile, de préférence aromatique, ou emploi d'une émulsion aqueuse de caoutchouc. Hais ces méthodes ne donnent pas encore entière satisfaction, car elles influencent défavorablement la viscosité et le pouvoir adhérent du bitume. De plus, les émulsions de caoutchouc ne sont pas suffisamment stables et ont tendance à coaguler.
Les compositions proposées ont surtout été étudiées pour répondre
<EMI ID=6.1>
doivent offrir un minimum de déformation sous l'effet (la charges importantes et,
<EMI ID=7.1>
revêtements protecteurs sur les surfaces métalliques, doivent répondre à d'autres critères spécifiques, concernant notamment les propriétés mécaniques et thermiques. Par exemple, les tubes pour pipelines sent utilisés dans diverses régions, <EMI ID=8.1>
non seulement la température d'application, nais aussi la température d'utilisation, jouent un rôle important. De plus, le revêtement doit être homogène, adhérent, souple et résistant pour pouvoir jouer son rôle de revêtement protecteur.
La présente invention a pour objet de nouvelles compositions à base
<EMI ID=9.1>
protecteurs pour surfaces métalliques, ces revêtements cependant aux critères ci-dessus.
<EMI ID=10.1>
Le bitume, qui est le principal constituant des compositions de la présente invention, peut être du bitume naturel ou du bitume obtenu directement comme résidu de la distillation de pétrole brut ou encore du bitume oxydé.
On caractérise un bitume par sa pénétration, c'est-à-dire par la profondeur de pénétration, dans le bitume, d'une aiguille standardisée, soumise
<EMI ID=11.1>
<EMI ID=12.1> � <EMI ID=13.1> <EMI ID=14.1>
D'autre part, Quand on désire améliorer la rigidité des compositions de l'Invention, on peut ajoutes certaines charges minérales, telles que kaolinite, mica, farina de quarts, calcaire, carbonate, de calcina, argiles, etc. en une
<EMI ID=15.1>
bitume. Certains additifs pouvant avoir un effet légèrement défavorable sur le comportaient diélectrique des revêtements, il est préférable d'utiliser des
<EMI ID=16.1>
<EMI ID=17.1>
<EMI ID=18.1>
<EMI ID=19.1>
t <EMI ID=20.1>
<EMI ID=21.1>
<EMI ID=22.1>
atactique en petits granules, ayant un poids moléculaire �oyen de 15.000, et en effectuant le mélange à 190*C.
Le mélange obtenu avait les caractéristiques suivantes :
<EMI ID=23.1>
<EMI ID=24.1>
La composition obtenue avait les caractéristiques suivant;.'.;} :
<EMI ID=25.1>
D'autre part, un échantillon de cette composition a été allongé de 12 fois sa longueur initiale, sans qu'il se produise de rupture.
<EMI ID=26.1>
A titre de comparaison, on a prépare une composition similaire, mais en utilisant un copolymère butadiène-styrène du type A-B-A, contenant
<EMI ID=27.1>
On a obtenu les résultats suivants :
<EMI ID=28.1>
élongation rupture après allongement de
4 fois la longueur initiale
<EMI ID=29.1>
150.000.
La composition avait les caractéristiques suivantes :
<EMI ID=30.1>
<EMI ID = 1.1>
<EMI ID = 2.1>
<EMI ID = 3.1> number of criteria, which the bitumen alone cannot meet. It is therefore necessary to modify the bitumen to improve several of its properties,
<EMI ID = 4.1>
complete dissolved in bitumen; the undissolved phase precipitates and impairs the final properties of the composition. To remedy this drawback,
<EMI ID = 5.1>
an oil, preferably aromatic, or use of an aqueous rubber emulsion. But these methods are not yet entirely satisfactory, as they adversely affect the viscosity and the adhesion capacity of the bitumen. In addition, rubber emulsions are not sufficiently stable and tend to coagulate.
The proposed compositions have above all been studied to answer
<EMI ID = 6.1>
must offer a minimum of deformation under the effect (the significant loads and,
<EMI ID = 7.1>
Protective coatings on metal surfaces must meet other specific criteria, particularly concerning mechanical and thermal properties. For example, pipeline tubes are used in various regions, <EMI ID = 8.1>
not only the application temperature, but also the operating temperature, play an important role. In addition, the coating must be homogeneous, adherent, flexible and resistant in order to be able to play its role of protective coating.
The present invention relates to novel compositions based
<EMI ID = 9.1>
protectors for metal surfaces, these coatings however meeting the above criteria.
<EMI ID = 10.1>
The bitumen, which is the main constituent of the compositions of the present invention, can be natural bitumen or bitumen obtained directly as a residue from the distillation of crude oil or else oxidized bitumen.
A bitumen is characterized by its penetration, that is to say by the depth of penetration, in the bitumen, of a standardized needle, subjected
<EMI ID = 11.1>
<EMI ID = 12.1> � <EMI ID = 13.1> <EMI ID = 14.1>
On the other hand, when it is desired to improve the rigidity of the compositions of the invention, certain mineral fillers can be added, such as kaolinite, mica, quarter flour, limestone, carbonate, calcine, clays, etc. in one
<EMI ID = 15.1>
bitumen. Since some additives may have a slightly unfavorable effect on the dielectric performance of the coatings, it is preferable to use
<EMI ID = 16.1>
<EMI ID = 17.1>
<EMI ID = 18.1>
<EMI ID = 19.1>
t <EMI ID = 20.1>
<EMI ID = 21.1>
<EMI ID = 22.1>
atactic in small granules, having an average molecular weight of 15,000, and mixing at 190 ° C.
The mixture obtained had the following characteristics:
<EMI ID = 23.1>
<EMI ID = 24.1>
The composition obtained had the following characteristics ;. '.;}:
<EMI ID = 25.1>
On the other hand, a sample of this composition was stretched 12 times its original length, without any break occurring.
<EMI ID = 26.1>
For comparison, a similar composition was prepared, but using a butadiene-styrene copolymer of the A-B-A type, containing
<EMI ID = 27.1>
The following results were obtained:
<EMI ID = 28.1>
elongation rupture after elongation of
4 times the original length
<EMI ID = 29.1>
150,000.
The composition had the following characteristics:
<EMI ID = 30.1>
Claims (1)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE176393A BE853210A (en) | 1977-04-04 | 1977-04-04 | BITUMEN-BASED COMPOSITIONS |
| LU79192A LU79192A1 (en) | 1977-04-04 | 1978-03-08 | BITUMEN-BASED COMPOSITIONS |
| DE19782811262 DE2811262A1 (en) | 1977-04-04 | 1978-03-15 | Bitumen coating compsns. - contg. radial block copolymer of butadiene and styrene |
| IT21299/78A IT1094906B (en) | 1977-04-04 | 1978-03-17 | BITUMEN-BASED COMPOSITIONS, PARTICULARLY FOR COATING METAL SURFACES |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE853210 | 1977-04-04 | ||
| BE176393A BE853210A (en) | 1977-04-04 | 1977-04-04 | BITUMEN-BASED COMPOSITIONS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE853210A true BE853210A (en) | 1977-08-01 |
Family
ID=25649972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE176393A BE853210A (en) | 1977-04-04 | 1977-04-04 | BITUMEN-BASED COMPOSITIONS |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE853210A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0009432A1 (en) * | 1978-09-13 | 1980-04-02 | COMPOSANTS INDUSTRIALISES DU BATIMENT par abréviation C.I.B. Société dite: | Bituminous compositions containing polymers and their applications |
| FR2607510A1 (en) * | 1986-12-01 | 1988-06-03 | Enichem Elastomers | RADIAL AND BRANCHED SEQUENCE COPOLYMERS, COMPOSITIONS CONTAINING SAME, PREPARATION THEREOF AND THEIR USE IN BITUMINOUS COMPOSITIONS |
| US5272214A (en) * | 1986-12-01 | 1993-12-21 | Enichem Elastomeri S.P.A. | Radial and branched block copolymers, compositions which contain them, their preparation and their use in bituminous compositions |
-
1977
- 1977-04-04 BE BE176393A patent/BE853210A/en not_active IP Right Cessation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0009432A1 (en) * | 1978-09-13 | 1980-04-02 | COMPOSANTS INDUSTRIALISES DU BATIMENT par abréviation C.I.B. Société dite: | Bituminous compositions containing polymers and their applications |
| FR2436160A1 (en) * | 1978-09-13 | 1980-04-11 | Cib | BITUMINOUS COMPOSITION CONTAINING POLYMERS AND ITS APPLICATIONS |
| FR2607510A1 (en) * | 1986-12-01 | 1988-06-03 | Enichem Elastomers | RADIAL AND BRANCHED SEQUENCE COPOLYMERS, COMPOSITIONS CONTAINING SAME, PREPARATION THEREOF AND THEIR USE IN BITUMINOUS COMPOSITIONS |
| BE1001232A3 (en) * | 1986-12-01 | 1989-08-29 | Enichem Elastomers | Branched and radial block copolymers, compositions containing them, their preparation and their use in bituminous compositions. |
| US5272214A (en) * | 1986-12-01 | 1993-12-21 | Enichem Elastomeri S.P.A. | Radial and branched block copolymers, compositions which contain them, their preparation and their use in bituminous compositions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE20 | Patent expired |
Owner name: S.A. FINA RESEARCH Effective date: 19970404 Owner name: POLYTEC S.P.R.L. Effective date: 19970404 |