Photocurable compositions for stereolithography, method of forming the compositions, stereolithography methods using the compositions, polymer components formed by the stereolithography methods, and a device including the polymer components

A photocurable composition for stereolithographic three-dimensional printing, wherein

• the photocurable composition comprises
• a photoreactive oligomer component comprising a hydrophobic oligomer comprising a photoreactive end group,
• a photoreactive monomer component comprising a photoreactive monomer having a (meth) acrylate end group, an alkenyl functional group, an alkynyl functional group, or a combination thereof, provided that when the photoreactive monomer comprises a (meth) acrylate end group, the photoreactive monomer component comprises at least 50% by weight of the photoreactive monomer having the (meth) acrylate end group,
• a photoinitiation composition comprising a photoinitiator, and
• a thermal cure initiator;
• the photocurable composition has a viscosity of 250 to 10,000 centipoise at 22° C., determined using a Brookfield viscometer;
• and
• the photocured composition has a dielectric loss of less than 0.010 determined by split-post dielectric resonator testing at 10 gigahertz at 23° C.