Patent ID: 7981436

Claim:
A gel comprising: 1) at least one compound of formula wherein R 1 represents a hydrogen atom, a C 1 -C 10 linear or branched alkyl group or a phenyl group; A is selected from the group consisting of formulae i) to vi), in which formulae the dotted and the bold lines indicate the connection to the —CONHNHR 1 and B moieties, respectively, and R 2 , R 3 or R 4 are, independently from each others, selected from the group consisting of —H, —OH, —OCOCH 3 , —OCH 2 Ph, —OPO 3 NaH, and —OPO 3 H 2 , or, taken two of them together, of —OP(OH)OO—, —OP(ONa)OO—, and —OC(CH 3 ) 2 O—; and Y and X are a NH group or oxygen atom or a CH 2 or CHOH group; and n is an integer varying from 1 to 50; and B is a moiety of formulae vii) to x) in which formulae the bold line indicates the connection to the A moiety, and R 5 is selected from the group consisting of —H, —OH, —OCH 3 , —SH, —SCH 3 , —NH 2 , —NHCH 3 , —OCOCH 3 , —OCH 2 Ph, —OCH 2 CH═CH 2 , and —Br; 2) a salt comprising at least one cation selected from the group consisting of K + , Na + , Li + , Rb + , Cs + , Sr 2+ , Ba 2+ , NH 4 + or (CH 3 ) 4 N + , and at least one anion selected from the group consisting of Cl − , Br − , I − , NO 3 − , HCOO − , CH 3 COO − , H 2 PO 3 − , HPO 3 2− , PO 3 3− , SO 4 2− , CO 3 2− , HCO 3 − , BO 2 − , PF 6 − , picrate − and citrate 3− ; and 3) a water-based liquid.