<p>Disclosed is a polymer composition wherein the thickening rate during storage can be suppressed low. Specifically disclosed is a polymer composition containing 0.05-10 parts by mass of a compound (O) having one phenolic hydroxy group per 100 parts by mass of an alkoxysilyl group-containing oxyalkylene polymer (P) having a urethane bond, which is obtained by a urethanization reaction between a polymer (pP), which has a polyoxyalkylene chain and a hydroxy group, and a compound (U) having an alkoxysilyl group and an isocyanate group.</p>
