Supramolecular polymer-containing bituminous composition
AssigneeCeca S.A.
InventorsJuan Antonio Gonzalez Leon, Jean-Philippe Gillet, Gilles Barreto, Manuel Hidalgo, Vincent Luca
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Abstract
The present invention relates to a bituminous composition comprising at least one bitumen and at least one polycondensate capable of forming a supramolecular assembly comprising one or more associative group(s). The present invention also relates to the use of such bituminous composition for the preparation of asphalt mixtures useful for the coating of rolling surfaces, for the preparation of water-proofing coatings, and the for the preparation of adhesive formulations.
Claims9
Bituminous composition comprising at least one bitumen and at least one polycondensate comprising:
- α) at least two repeating units of formula (A1):
- wherein X represents oxygen, —C(R1(R2)—, or —N(R1)—, wherein R1 and R2 each independently represents hydrogen or a C1—C6 linear or branched alkyl, and z is an integer with values 0 or 1, provided that when z is 0, X does not represent —C(R1)(R2)—, the repeating units A1 being separated from each other by:
- α1) different or identical linear or branched, saturated or unsaturated, C1—C100, hydrocarbon chain(s), optionally containing hydrocarbon ring(s), aromatic ring(s) and/or heterocyclic ring(s), and/or
- α2) alkylene oxide chain(s), with at least 2 repeating units, and
- β) at least one associative group B selected from the group consisting of:
- wherein Z represents oxygen, sulphur or a —NH group,and R represents C1—C10 linear or branched alkyl.
Process for the preparation of a bituminous composition comprising the steps of:
- adding , to bitumen, 0.05 to 20 parts by weight of a polycondensate comprising:
- α) at least two repeating units of formula (A1):
- wherein X represents oxygen, —C(R1)(R2)—, or —N(R1)—, wherein R1 and R2 each independently represents hydrogen or a C1—C6 linear or branched alkyl, and z is an integer with values 0 or 1, provided that when z is 0, X does not represent —C(R1)(R2)—, the repeating units A1 being separated from each other by:
- α1) different or identical linear or branched, saturated or unsaturated, C1—C100, hydrocarbon chain(s), optionally containing hydrocarbon ring(s), aromatic ring(s) and/or heterocyclic ring(s), and/or
- α2) alkylene oxide chain(s), with at least 2 repeating units, and
- β) at least one associative group B selected from the group consisting of:
- wherein Z represents oxygen, sulphur or a —NH group, and R represents C1—C10 linear or branched alkyl, to 100 parts by weight of a bitumen,
- mixing, for a period of time ranging from 1 minute to several hours, and
- obtaining a bituminous composition ready to use.
Dependencies are inferred from the claim text.