Patent ID: 8846848

Claim:
A dendrimer composition comprising a mixture of dendrimers of different molecular weights of the formula, (Core x )(D r M p ) x , or a tautomeric form thereof, or a salt thereof, or a solvate thereof, wherein x is an integer from 3 to 6, and wherein: A) Core x represents a combination of two or more of the following structures: A.1) when x =3; A.2) when x =4; A.3) when x =5; A.4) when x =6; B) D represents C) M represents, R 1 or R 2 , wherein: C.1) R 1 is: and C.2) R 2 is and D) R 3 is D or M; E) r is p-1; F) p is 2 n-1 ; G) n is an integer from 1 to 10; and H) X is selected from the group consisting of (CQ 2 ) a CQ 3 and CH 2 —O—CH 2 -Ph, where Q represents, independently, H or halogen, Ph represents phenyl, and a is an integer from 0 to 16.