Sulfur-containing unsaturated carboxylate compound and its cured products

A sulfur-containing unsaturated carboxylate compound represented by general formula (1):

• wherein R11 represents a bivalent organic group represented by a formula selected from the group of formulas (3-a), (4-a), (5-a) and (6-a):
• wherein R31, R32, R33 and R34 independently represents hydrogen, alkyl, alkoxy, nitro or halogen;
• wherein Y41 represents a single bond, —C(R41)2— (each R41 independently represents hydrogen or methyl), —O—, —S— or —SO2—;
• R42 and R43 independently represent alkyl, alkenyl, aralkyl, aryl, alkoxy, alkylthio, nitro or halogen;
• m and n independently represent an integer of 0 to 4;
• wherein each R51 independently represents hydrogen or alkyl;
• wherein R61 and R62 independently represent hydrogen or alkyl;
• each X11 independently represents oxygen, sulfur, —COO— or —(CH2)lX12— (X12 represents oxygen or sulfur and l is an integer of 1 to 3);
• each R12 independently represents hydrogen or alkyl;
• each R13 independently represents a sulfur-containing substituent represented by formula (7-a) or (8-a):
• R71—O— (7-a)
• wherein R71 is a monovalent organic group containing at least one sulfur atom;
• R81—S— (8-a)
• wherein R81 is a monovalent organic group optionally containing a sulfur atom;
• and each R14 independently represents an α,β-unsaturated carboxylate residue.