Patent ID: 11899363
Assignee: SUMITOMO CHEMICAL COMPANY LIMITED
Field: Organic fine chemistry (Chemistry)
Classification: CPC G  C | IPC C  G

Claim 15:
16. The resist composition according to claim 14, wherein the resin having an acid-labile group includes a structural unit represented by formula (a2-A):, wherein, in formula (a2-A),
Ra50 represents a hydrogen atom, a halogen atom, or an alkyl group having 1 to 6 carbon atoms which may have a halogen atom,

Ra51 represents a halogen atom, a hydroxy group, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an alkoxyalkyl group having 2 to 12 carbon atoms, an alkoxyalkoxy group having 2 to 12 carbon atoms, an alkylcarbonyl group having 2 to 4 carbon atoms, an alkylcarbonyloxy group having 2 to 4 carbon atoms, an acryloyloxy group or a methacryloyloxy group,
Aa50 represents a single bond or * —XA51—(Aa52-Xa52)nb and * represents a bond to carbon atoms to which —Ra50 is bonded,
Aa52 represents an alkanediyl group having 1 to 6 carbon atoms,
Xa51 and Xa52 each independently represent —O—, —CO—O—or —O—CO—,
nb represents 0 or 1, and
mb represents an integer of 0 to 4, and when mb is an integer of 2 or more, a plurality of Ra51 may be the same or different from each other.