Block Copolymers Suitable as Impact Modifiers, Process for Their Preparation and Polymerizable Materials Comprising Them

A block copolymer according to Formula 1,

• characterized in that
• n is a value of from 5 to 250;
• W1 is a group according to Formula 2, which is attached to the Si atom of Formula 1 via X1,
• wherein
• X1 is CH2 or an O atom;
• X2 is a —C(O)O— group or is absent;
• Y1 is absent, an O atom, a NR21 group in which R21 is a hydrogen atom or a branched or a linear C1-C12 alkyl group, whereby Y1 is absent if Y2 is an O atom;
• Y2 is an O atom or is absent, whereby Y2 is absent if Y1 is an O atom or a NR21 group;
• R1 is a branched or linear C1-C16 alkanediyl group, that is interrupted by one or more O atoms and/or —C(O)O— groups or is uninterrupted;
• R2 is absent or a branched or a linear C1-C10 alkanediyl group, that is uninterrupted or interrupted by one or more O atoms and/or —C(O)O— groups whereby R2 cannot be absent if X2 is a —C(O)O— group;
• R3 is hydrogen, a methyl, nitrile or —(C═O)OR1′ group, and R10 is a branched or a linear C1-C12 alkyl group;
• R4 is a branched or linear C1-C12 alkyl group, that is uninterrupted or interrupted by one or more S atoms, O atoms, —C(O)O— groups and/or —C(O)NH— groups, and which is unsubstituted or substituted by one or more functional groups;
• or
• a C4-C16 cycloaliphatic group that is unsubstituted or substituted by one or more substituents selected from branched or preferably linear C1-C20 alkyl groups, and that is uninterrupted or interrupted by one or more S atoms, O atoms, —C(O)O— groups and/or C(O)NH— groups;
• or
• a C4-C10 aryl or heteroaryl group which is unsubstituted or substituted by one or more substituents selected from branched or linear C1-C20 alkyl groups, —O—C1-C12 alkoxy groups, ester groups —C(O)O—R11, and/or acyl groups —C(O)—R12, wherein R11 and R12 are each independently of one other a branched or linear C1-C20 alkyl group, a C6-C10 aryl group or a C7-C20-alkylaryl group, and can be interrupted by one or more S atoms or O atoms or are uninterrupted;
• or
• a C5-C20-alkylaryl or C5-C20-alkylheteroaryl group that is uninterrupted or interrupted by one or more S atoms, O atoms, —C(O)O— groups and/or —C(O)NH— groups, and that is unsubstituted or substituted by one or more substituents selected from C1-C20 alkyl groups, branched or linear —O—C1-C12 alkoxy groups, branched or linear ester groups —C(O)OR13, and/or branched or linear acyl groups —C(O)—R14, where R13 is a branched or linear C1-C20 alkyl group, a C6-C10 aryl group or a C7-C20-alkylaryl group, and R14 is a branched or linear C1-C20 alkyl group, a C6-C10 aryl group or a C7-C20-alkylaryl group;
• R5 is a phenyl group or a —(C═O)OR15 group in which
• R15 is a branched or linear C1-C12 alkyl group, that is uninterrupted or interrupted by one or more S atoms, O atoms, —C(O)O— groups, and/or —C(O)NH— groups, and that is unsubstituted or is substituted by one or more functional groups;
• or
• a C4-C16 cycloaliphatic group that is unsubstituted or substituted by one or more substituents selected from branched or linear C1-C20 alkyl groups, and that is uninterrupted or interrupted by one or more S atoms, O atoms, —C(O)O— groups and/or C(O)NH— groups;
• or
• a C4-C10 aryl or heteroaryl group that is unsubstituted or substituted by one or more substituents which are selected from branched or linear C1-C20 alkyl groups, branched or linear —O—C1-C12 alkoxy groups, branched or linear ester groups —C(O)O—R16, and/or branched or linear acyl groups —C(O)—R17, and that is uninterrupted or interrupted by one or more S atoms or O atoms, where R16 is a branched or linear C1-C20 alkyl group, a C6-C10 aryl group or a C7-C20-alkylaryl group, and R17 is a branched or linear C1-C20 alkyl group, a C6-C10 aryl group or a C7-C20-alkylaryl group,
• or
• a C5-C20-alkylaryl or C5-C20-alkylheteroaryl group that is uninterrupted or interrupted by one or more S atoms, O atoms, —C(O)O— groups and/or —C(O)NH— groups, and that is unsubstituted or substituted by one or more substituents selected from branched or linear C1-C20 alkyl groups, branched or linear O—C1-C12 alkoxy groups, branched or linear ester groups —C(O)O—R18, and/or branched or linear acyl groups —C(O)—R19, where R18 is a branched or linear C1-C20 alkyl group, a C6-C10 aryl group or a C7-C20-alkylaryl group, and R19 is a branched or linear C1-C20 alkyl group, a C6-C10 aryl group or a C7-C20-alkylaryl group;
• R6 is a hydrogen atom, a methyl group, or forms together with R9 a —CH2—CHR22—CH2— group, wherein R22 is H or an OH group;
• R7 is a methyl group, a —CH(CH3)2 group or a —C(CH3)3 group;
• R8 is a methyl group, a phenyl group or a P(O)(OR20)2 group in which R20 is a branched or linear C1-C12 alkyl group;
• R9 is a methyl group or forms together with R6 a —CH2—CHR22—CH2— group, wherein R22 is H or an OH group;
• p is a number of from 1 to 400;
• q is a number of from 0 to 400;
• p+q is >5;
• W2 is a group according to Formula 2, which is attached to the Si atom of Formula 1 via X1, as indicated by the dashed line, or is a branched or linear C1-C12 alkyl group.