Bituminous composition solid at ambient temperature

Patent metadata

Field	Value
Publication number	US-2022017749-A1
Application number	US-201917296410-A
Country	US
Kind code	A1
Filing date	Dec 6, 2019
Priority date	Dec 10, 2018
Publication date	Jan 20, 2022
Grant date	—

Abstract

A bituminous composition comprising at least one bitumen base, at least one compound of general formula (I): Ar1-R1—Ar2 (I), and at least one compound of general formula (II): R2—(NH)nCONH—X—(NHCO)p(NH)n—R′2 (II). The invention also concerns a process for the preparation of said bituminous composition.

First claim

1 - 12 . (canceled)

13 . A bituminous composition comprising at least:
a) a bitumen base, b) a compound of general formula (I):
Ar1-R 1 —Ar 2   (I)

wherein: Ar1 and Ar2 represent, independently of each other, an aromatic group comprising from 6 to 20 carbon atoms chosen among a benzene nucleus or a system of condensed aromatic nuclei, said aromatic group being substituted by at least one hydroxyl group and optionally by one or more C 1 -C 20 alkyl groups, and R 1 represents an optionally substituted hydrocarbon divalent radical, the main chain of which comprises from 6 to 20 carbon atoms and at least one group chosen from the amide, ester, hydrazide, urea, carbamate and anhydride functional groups, c) a compound of general formula (II):
R 2 —(NH) n CONH—X—(NHCO) p (NH) n —R′ 2   (II)

wherein:
the R 2 and R′ 2 groups, which are identical or different, represent a hydrocarbon chain comprising from 1 to 22 carbon atoms which is optionally substituted and which optionally comprises one or more heteroatoms, and R 2 can be H,
the X group represents a hydrocarbon chain comprising from 1 to 22 carbon atoms which is optionally substituted and which optionally comprises one or more heteroatoms, and
n and p are integers having a value of 0 or 1, independently of each other.

14 . The bituminous composition according to claim 13 , wherein the compound of general formula (I) is 2′,3-bis[(3-[3,5-di(tert-butyl)-4-hydroxyphenyl]propionyl)]propionohydrazide.

15 . The bituminous composition according to claim 13 , wherein the compound of general formula (II) is chosen from compounds of general formula (IIA):
R 2 —CONH—X—NHCO—R′ 2   (IIA)
wherein R 2 , R′ 2 and X are as defined in claim 13 .

16 . The bituminous composition according to claim 15 , wherein the compound of general formula (IIA) is chosen from compounds C 5 H 11 —CONH—NHCO—C 5 H 11 , C 9 H 19 —CONH—NHCO—C 9 H 19 , C 11 H 23 —CONH—NHCO—C 11 H 23 , C 17 H 35 —CONH—NHCO-C 17 H 35 or C 21 H 43 —CONH—NHCO—C 21 H 43 ; N,N′-ethylenedi(laurylamide) of formula C 11 H 23 —CONH—CH 2 —CH 2 —NHCO—C 11 H 23 , N,N′-ethylenedi(myristylamide) of formula C 13 H 27 —CONH—CH 2 —CH 2 —NHCO—C 13 H 27 , N,N′-ethylenedi(palmitamide) of formula C 15 H 31 —CONH—CH 2 —CH 2 —NHCO—C 15 H 31 or N,N′-ethylenedi(stearamide) of formula C 17 H 35 —CONH—CH 2 —CH 2 —NHCO—C 17 H 35 ; laurylamide of formula C 11 H 23 —CONH 2 , myristylamide of formula C 13 H 27 —CONH 2 , palmitamide of formula C 15 H 31 —CONH 2 or stearamide of formula C 17 H 35 —CONH 2 .

17 . The bituminous composition according to claim 16 , wherein the compound of general formula (IIA) is N,N′-ethylenedi(stearamide) of formula C 17 H 35 —CONH—CH 2 —CH 2 —NHCO—C 17 H 35 .

18 . The bituminous composition as claimed in claim 13 , comprising from 0.1 to 10% by weight of one or several compounds of general formula (I), preferably from 0.4% to 5% by weight, more preferably from 0.4% to 1% by weight, with respect to the total weight of the bituminous composition.

19 . The bituminous composition as claimed in claim 13 , comprising from 0.1% to 10% by weight of one or several compounds of general formula (II) by weight, with respect to the total weight of the bituminous composition.

20 . The bituminous composition as claimed in claim 13 , comprising from 80 to 99.8% by weight of one or several bitumen bases, with respect to the total weight of the bituminous composition.

21 . The bituminous composition as claimed in claim 13 , comprising:
a) from 80 to 99.8% by weight of one or several bitumen bases, b) from 0.1 to 10% by weight of one or several additives of general formula (I), and c) from 0.1 to 10% by weight of one or several additives of general formula (II), with respect to the total weight of the bituminous composition.

22 . The bituminous composition as claimed in claim 13 , wherein the bitumen base has a penetrability at 25° C., measured according to standard EN 1426, lower than or equal to 200 1/10 mm.

23 . The bituminous composition as claimed in claim 13 , having a penetrability at 25° C., measured according to standard EN 1426, lower than or equal to 40 1/10 mm.

24 . The bituminous composition as claimed in claim 13 , having a ring-and-ball softening point, measured according to standard EN 1427, of from 80 to 120° C.

25 . The bituminous composition as claimed in claim 13 , having a deformability at 65° C. lower than or equal to 50%.

26 . The bituminous composition as claimed in claim 13 , having a viscosity at 160° C., V 160 , measured according to standard EN 13702, lower than or equal to 500 mPa·s.

27 . A process for the preparation of a bituminous composition according to claim 13 , said process comprising contacting, at a temperature ranging from 70° C. to 220° C., the bitumen base with the compounds of general formula (I) and (II).

28 . The process according to claim 27 , which comprises the following steps:
a) the introduction of the bitumen base in a reactor equipped with mixing means and its heating at a temperature ranging from 70° C. to 220° C., b) the simultaneous or successive additions of the compounds of general formula (I) and (II), and c) the mixture of the bituminous composition at a temperature ranging from 70° C. to 220° C., until obtaining a homogenous composition.

Assignees

• Total Marketing Services

Inventors

• Vincent Régis

Classifications

• C08K5/20

  Carboxylic acid amides · CPC title

• C08L2555/20

  Mixtures of bitumen and aggregate defined by their production temperatures, e.g. production of asphalt for road or pavement applications · CPC title

• C08L95/00 Primary

  Compositions of bituminous materials, e.g. asphalt, tar, pitch · CPC title

• E04D1/20

  of plastics; {of asphalt;} of fibrous materials · CPC title

• C08L2555/10

  Design or test methods for bitumen or asphalt mixtures, e.g. series of measures, procedures or tests to obtain a bitumen or asphalt mixture having preset defined properties, general or international test methods, procedures or standards · CPC title