Styrenic (meth)acrylic oligomers

A process comprising:

• continuously charging into a reactor a mixture comprising:
• about 20 wt % to about 80 wt % of a vinylic monomer, the vinylic monomer comprising a styrenic monomer, a (meth)acrylic monomer, or a mixture thereof;
• about 0.25 wt % to about 5 wt % of a polymerization initiator;
• and
• about 20 wt % to about 80 wt % of a reaction solvent;
• maintaining the reactor at a temperature of from about 120° C. to about 165° C. to produce an oligomer from the vinylic monomer;
• and
• isolating the oligomer;
• wherein:
• the oligomer has an insubstantial amount of olefinic unsaturation and a residence time of the oligomer in the reactor is from about 5 minutes to about 60 minutes.