Amphiphilic siloxane-containing (meth)acrylamides and uses thereof

An amphiphilic siloxane-containing (meth)acrylamide, being represented by formula (1) or (2)

• in which
• A1, A2, A3 and A4 independent of one another are a C1-C6 alkyl, phenyl or benzyl,
• r1 is an integer of 2 or 3,
• R′ is H or C1-C4 alkyl,
• R10 is hydrogen or methyl,
• R11 is a linear or branched C2-C6 alkylene divalent radical which may be substituted with one or more hydroxyl groups,
• R12 is C1-C4 alkoxy,
• Z1 and Z2 independent of each other are a direct bond or a linear or branched C1-C4 alkylene divalent radical,
• Z3 is C2-C4 alkylene divalent radical,
• Z4, Z5, and Z6 independent of one another are a direct bond or a linear or branched C1-C20 alkylene divalent radical which may have one or more ether, thio, amine, carbonyl, or amido linkages in their main chain,
• X1 is —O—CO—NH— or —O—CO—NH—R13—NH—CO—O— in which R13 is a linear or branched C2-C12 alkylene divalent radical or a C5-C45 cycloaliphatic or aliphatic-cycloaliphatic divalent radical,
• X2 and X3 independent of each other are selected from the group consisting of direct bond, —O—, —NR′—, —CO—NR′—, —NR′—CO—, —O—CO—NH—, —NH—CO—O—, —NR′—CO—NH—, —NH—CO—NR′—, —S—CO—NH, —NH—CO—S—, —S—, —CO—O—, —O—CO—, —O—CO—NH—R13—NH—CO—O—, and —NH—CO—NH—R13—NH—CO—NH—, in which R′ and R13 are as defined above,
• q1 is an integer from 2 to 50, q2 is an integer from 3 to 20.