Patent ID: 8580297

Claim:
A compound comprising the structure shown in Formula (I): amphoteric substance—Y—spacer—amphiphilic substance (Formula (1)), wherein: (a) the amphoteric substance comprises a cationic portion having a pKa of from 4 to 8, and an anionic portion with a pKa of from 3 to 7, wherein aa) the cationic portion is a substituted or unsubstituted morpholine or piperazine ring; and bb) the anionic portion is a carboxyl group; (b) Y is selected from the group consisting of —(C═O)—O—; —(C═O)—NH—; —NH—(C═O)—O—; —O—; —NH—; —CH═N—; —O—(O═C)—; —S—; —(O═C)—; —NH—(O═C)—; —O—(O═C)—NH— and —N═CH—; (c) the spacer is from 1 to 8 carbon atoms; and (d) the amphiphilic substance is selected from the group consisting of an acid group, amine containing group; a structure shown in Formula (II) and a structure shown in Formula (III), wherein aa) the acid group is esterified with linear C 8 -C 30 alcohols, and selected from the group consisting of a dicarboxylic acid; aspartic acid; glutamic acid; malic acid; tartaric acid; citric acid; aconitic acid; citraconic acid and maleic acid; bb) the amine group is amidated with linear C 8 -C 30 fatty acids, and selected from the group consisting 1,4-diamine; 1,5-diamine of 3-aminoalanine; diaminobutyric acid; ornithine and lysine; cc) Formula (II) is and; dd) Formula (III) is wherein X is selected from the group consisting of —O—(C═O); —NH—(C═O)—; —S—(C═O)—; —O—; —NH—; —S—; —N═CH—; —(O═C)—O—; —S—(O═C)—; —NH—(O═C)— and —N═CH—; and R 1 and R 2 are, independently, a C 8 -C 30 alkyl chain or a C 8 -C 30 acyl chain.