| abstract |
A sulphur-comprising polyaromatic polyamine compound can be used as a monomer or prepolymer, when n is different from zero, in the synthesis of polyurea. The compound corresponds to the formula (I): n H 2 N—Ar 1 —NH—CH 2 —CH(OH)—(CH 2 ) m —O—Z 1 —O—(CH 2 ) m —CH(OH)—CH 2 —[X] n —HN—Ar 2 —NH 2 n n in which X represents the string: n —HN—Ar 3 —NH—(CH 2 )—CH(OH)—(CH 2 ) m —O—Z 2 —O—(CH 2 ) m —CH(OH)—(CH 2 )—n n and in which n represents an integer equal to zero or different from zero;n m, which are identical or different, represent an integer within a range from 1 to 10; Z 1 and Z 2 , which are identical or different, represent a divalent bonding group comprising from 1 to 30 carbon atoms; and Ar 1 , Ar 2 and Ar 3 , which are identical or different, each represent a phenylene group, at least one of these phenylene groups bearing one, two, three or four groups of formula —S x —R in which “x” is an integer from 1 to 8 and R represents hydrogen or a hydrocarbon group which can comprise a heteroatom and which comprises from 1 to 10 carbon atoms. |