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Use of organogelator derivatives in bituminous compositions to improve the resistance of same to chemical stress

A technology of asphalt composition and derivatives, which is applied in the field of improving the resistance of asphalt composition to chemical attack and derivatives of organic gelling agent type, can solve the problems of accelerating the rapid degradation and increase of the runway of the lane aircraft.

Inactive Publication Date: 2013-01-23
TOTAL RAFFINAGE MARKETING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The aggressive effect of such chemical agents increases with the confinement of heavy traffic, especially heavy vehicles, and severe weather, which has the detrimental effect of accelerating the rapid degradation of roadways, especially aircraft runways

Method used

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  • Use of organogelator derivatives in bituminous compositions to improve the resistance of same to chemical stress
  • Use of organogelator derivatives in bituminous compositions to improve the resistance of same to chemical stress
  • Use of organogelator derivatives in bituminous compositions to improve the resistance of same to chemical stress

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Embodiment

[0247] The resistance of bituminous compositions to hydrocarbons was evaluated according to an internal standard method similar to that used for measuring the Ring and Ball (softening) temperature of bitumen (EN 1427).

[0248]The rings filled with the bituminous composition are placed in the holders conventionally used in the EN 1427 method, on which 5 g of balls are placed. The stents were placed in a beaker filled with kerosene instead of water as conventionally used in the standard EN 1427 method. The bituminous compositions were evaluated for their resistance to kerosene at room temperature and under agitation. The duration of softening of the two asphalt disks was evaluated until the individual balls covered with the asphalt composition moved down to a height of (25.0 ± 0.4) mm. This presents the problem of dissolving the bituminous composition in kerosene. The liquid in the beaker then becomes opaque making it impossible to visually know when the ball has dropped. Ch...

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Abstract

The invention relates to the use in a bituminous composition of an organogelator derivative which has a molar mass no higher than 2000 g / mol and includes at least one hydrogen bond donor D, at least one hydrogen bond acceptor A and at least one compatibilising agent C in the bitumen, said compatibilising agent C including a group selected among: at least one straight hydrocarbon chain including at least 4 carbon atoms; or at least one aliphatic cycle of 3 to 8 atoms; or at least one aromatic cycle; or at least one aliphatic, partially aromatic or even entirely aromatic condensed polycyclic system, each cycle including 5 or 6 atoms, taken alone or as a mixture, to improve the resistance thereof to aggressive chemical agents, in particular to hydrocarbons such as gasolines, diesels and / or kerosenes, excluding N,N'-ethylene bis(stearamide) and excluding fatty-chain polyamines obtained by reacting polyalkylene fatty-chain polyamines of the general formula (I) R-NH-(CH 2 - CH 2 -CH 2 -NH) n -H, where R is a linear hydrocarbon chain, saturated and / or unsaturated, of 8 to 22 carbon atoms, n being an integer from 1 to 5, with formic acid.

Description

technical field [0001] The invention belongs to the field of asphalt. More specifically, it relates to the use of derivatives of the organic gelling agent type in bituminous compositions to improve the resistance of the bituminous composition to chemical attack. Background technique [0002] It is known to use bituminous compositions, especially crosslinked bitumen / polymer compositions, as coatings for various surfaces, especially as road surfacing, provided that these compositions have a certain number of properties, in particular mechanical properties, in combination. [0003] In order to maintain and / or improve the properties, especially the mechanical properties, of conventional bitumen, bituminous compositions have long been used in which bitumen (formed from one or several types of bitumen) is combined with one or more functional polymers in particular is a blend of styrene-butadiene elastomers optionally chemically crosslinked in situ using a coupling or crosslinking...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08K5/00C08K5/25C08K5/092C08K5/06C08K5/21C08K5/20
CPCC08L2555/50C08L95/00C08K5/20C08K5/1575C08L2666/66
Inventor 西尔维娅·哈德斯劳伦斯·拉帕吕朱利恩·沙米南德里吉斯·文森特
Owner TOTAL RAFFINAGE MARKETING