Patent ID: 8188293

Claim:
A material comprising molecules, each of said molecules with a molecular mass of 9000 g/mol or less, some of said molecules comprising at least three associative functional groups, each associative functional group having formula (1): in which A denotes oxygen, sulphur, or NH, and the carbon atoms on formula (1) can be substituted, each associative functional group being capable of forming at least one non-covalent bond, wherein said molecules comprising at least three associative functional groups are present in the material in an amount effective to cause said material to have a rubbery elasticity as measured at 25° C., said rubbery elasticity being defined by the fact that, after a distortion under uniaxial stress for 15 minutes of said material from an initial length L 0 to a length L d such that (L d −L 0 )/L 0 is greater than or equal to 0.2, the material returns, after relaxation of the uniaxial stress, to a length L f such that (L f −L 0 )/L 0 is less than or equal to 0.05, given that L 0 is the initial length of the material, L d is length of the distorted material under uniaxial stress, and L f is the final length of the material after relaxation of the uniaxial stress, wherein, in addition to said molecules comprising at least three associative functional groups, said material further comprises molecules having the formula: where (A,B)=(R 2 ,R 3 ) or (R 3 ,R 2 ), in which R 2 is a hydrocarbon-containing chain that ends with a secondary amine group bearing a 2-imidazolidone ending, and R 3 and R 4 are saturated or unsaturated hydrocarbon-containing chains, and wherein R 1 is in which: n 1 =5 to 8, x 1 =0 or 1, y 1 =0 or 1, z 1 =0 or 1, said material further comprising molecules having a single associative functional group having formula (1).