Emulsifying composition for spreading bitumen

An aqueous acidic emulsifying composition comprising:

• A) from 0.01 to 20% by weight, relative to the total weight of the aqueous composition, of an optionally alkoxylated fatty polyamine, and optionally at least one chosen from an optionally alkoxylated fatty monoamine and an optionally alkoxylated fatty amidoamine:
• i) the optionally alkoxylated fatty monoamine being of following formula (I):
• wherein:
• R1 represents a saturated or unsaturated, linear or branched carbon chain comprising 8 to 24 carbon atoms,
• R2 and R3, which are identical or different, represent a hydrogen atom, a linear or branched, saturated or unsaturated alkyl radical comprising 1 to 4 carbon atoms, or a —(CH2CHR4O)hH group, with R4 representing a hydrogen atom, a methyl or ethyl radical, and h being an integer ranging from 1 to 10, wherein if h>1, there are several groups R4 which may be identical or different,
• ii) the optionally alkoxylated fatty polyamine being of following formula (II):
• wherein:
• R5 represents a saturated or unsaturated, linear or branched carbon chain comprising 8 to 24 carbon atoms,
• R6, R7 and R8, which are identical or different, represent a hydrogen atom, a linear or branched, saturated or unsaturated alkyl radical comprising 1 to 4 carbon atoms, or a —(CH2CHR9O)iH group, with
• R9 representing a hydrogen atom, a methyl or ethyl radical, and
• i denoting an integer ranging from 1 to 10,
• wherein if i>1 there are several groups R9 as defined above and which may be identical or different,
• m denotes an integer between 1 and 6, wherein if m>1 there are several groups R8 as defined above and which may be identical or different,
• n denotes an integer between 1 and 6,
• iii) the optionally alkoxylated fatty amidoamine being of following formula (IIIa) or the optionally alkoxylated cyclized equivalent thereof, of following formula (IIIb):
• wherein:
• the groups R5, R6, R7 and R8 have the same meaning as in the formula (II),
• p and q denote an integer between 1 and 6,
• s denotes an integer between 1 and 10,
• t denotes an integer between 0 and 9,
• wherein if s>1 or t>1, there are several groups R8 defined above and which may be identical or different,
• B) from 0.001% to 10% by weight, relative to the total weight of the aqueous composition, of at least one polymerized fatty acid having a molar mass greater than 350 g·mol−1 and an acid number greater than 160 mg KOH g−1, according to standard ASTM D465 of 2005,
• C) less than 20% by weight, relative to the total weight of the aqueous composition, of at least one bitumen, and
• D) a water content greater than 5% by weight relative to the total weight of the aqueous composition.