Antimicrobial organosilanes

A quaternary ammonium compound of Formula:

• wherein
• a is 1, 2, 3, 4, 5, 6, 7 or 8;
• R1 is independently at each occurrence selected from C6-C22alkyl and C6-C22alkanoyl;
• R2, R3, R4, R22, R23, and R24 are independently at each occurrence selected from the group consisting of:
• each R21 is independently selected from C1-C22alkyl and C2-C22alkanoyl;
• R7 is independently at each occurrence selected from hydrogen, C1-C8alkyl, C1-C8hydroxyalkyl, and C1-C8 alkanoyl;
• R8 and R9 are independently at each occurrence selected from hydrogen, halogen, hydroxyl, N(R7)2, CH2OR7, CON(R7)2, COOR7, C(O)R7, C1-C8alkyl, C1-C8hydroxyalkyl, and C1-C8alkanoyl;
• X1 is NR17, CH2, CHOH, or C(O);
• X2 is C1-C3alkyl or C1-C3hydroxyalkyl;
• R16 is C1-C4alkyl;
• R17 is hydrogen, C1-C8hydroxyalkyl, or C1-C8alkanoyl;
• X− is an anion or is absent if the quaternary amine is balanced with an internal anion;
• and
• B+ is a cation.