| abstract |
A process for preparing a composition (C 1 ) represented by the formula (I): HO—CH 2 —(CHOH) n —CH 2 —O-(G) x -H, in which G represents the remainder of a reducing sugar, n is an integer equal to 2, 3 or 4 and x, which indicates the mean degree of polymerization of the remainder G, represents a decimal number greater than 1 and less than or equal to 5, characterized in that the process includes at least one step a) of reacting a polyol of formula (A 1 ): HO—CH 2 —(CHOH) n —CH 2 —OH, in which n is an integer equal to 2, 3 or 4, with a reducing sugar of formula (II): HO-G-H, in which G represents the remainder of a reducing sugar, in the presence of an acid catalyst (C a ), and in that the acid catalyst (C a ) is chosen from phosphorous acid, phosphoric acid and polyphosphoric acid. |