| 主权项 |
1. A cationically and amphiphilically modified galactomannan having an average mannose to galactose ratio of at least 5:1 wherein a portion of the hydrogen atoms of the hydroxyl groups present on the galactomannan are substituted with a least one cationic moiety represented by formula (I) and at least one amphiphilic moiety represented by formula (II) as follows: wherein A, independently, is selected from a divalent linear or branched, substituted or unsubstituted C1-C6 alkylene radical, and when substituted said substituent, independently, is selected from hydroxyl and halo; R, independently, is selected from —S+R3R4 X−, —N+R3R4R5 X−, and —P+R3R4R5 X−, wherein R3 and R4, and R5, independently, are selected from hydrogen and linear and branched C1-C24 alkyl, and X− represents an anion; (R1—O)c represents a oxyalkylene moiety or a polyoxyalkylene moiety arranged as a homopolymer, a random copolymer or a block copolymer of oxyalkylene units, wherein R1, independently, is selected from linear and branched C2H4, C3H6, and C4H8 divalent alkylene groups, and c is an integer ranging from about 2 to about 250; R2, independently, is selected from a hydrocarbon group having from about 6 to about 35 carbon atoms; a is 0 or 1; and b is 0 or 1, subject to the proviso that when a is 0, then b is also 0. |
