Mixtures of extenders and polyols or polymer/polyols useful in polyurethane production

摘要

The invention provides a polyol-chain extender mixture consisting of (1) a poly(oxypropylene-oxyethylene) polyol having a hydroxyl number of from about 20 to 60, an oxyethylene cap of from about 10 to 30 weight percent and an internal oxyethylene content of from about 30 to 60 weight percent and (2) ethylene glycol, The invention also provides polymer/polyoly-chain extender mixtures wherein the polyol-chain extender is as aforesaid.