Actinically-curable compositions having high dimensional accuracy

An actinically-curable composition comprising:

• (a) a first component comprising one or more compounds having at least two (meth)acrylate functional groups and at least one hydrogen bond donor group comprising a bond selected from the group consisting of N—H bond, O—H bond and S—H bond;
• (b) a second component comprising one or more compounds having at least two (meth)acrylate functional groups and no hydrogen bond donor groups;
• and
• (c) a third component comprising one or more compounds having formula (I):
• wherein:
• R1 is hydrogen or methyl;
• R2 is X—R3 or R3;
• X is —(CRaRb)p—*, —(CH2—CH2—O)n—*, or —(CH2—CH(CH3)—O)m—*, and the symbol * represents the point of attachment to R3;
• each Ra and Rb is independently selected from H or alkyl;
• p, n, and m, are independently from 1 to 10;
• R3 is a cyclic moiety selected from one of (2,2-dimethyl-1,3-dioxolan-4-yl) methyl (meth)acrylate (IPG(M)A);
• (2-ethyl-2-methyl-1,3-dioxolan-4-yl) methyl acrylate (MEDOL-10);
• glycerol formal methacrylate (Glyfoma);
• tricyclodecane methanol mono(meth)acrylate;
• adamantan-1-yl acrylate or a compound having a formula (II), (III), (IV), or (V):
• and
• R4 to R19 are independently selected from the group consisting of hydrogen, (C6-C40) aryl, and (C1-C40) alkyl.