2-ethanediyl), .alpha.-[1,1'-biphenyl] yl-.omega.-hydroxy-Poly(oxy-1 。 Polyoxyethylene p-phenylphenyl ether 。 alpha-[1,1'-biphenyl]yl- omega -hydroxy-poly(oxy-2-ethanediyl) 。 alpha-[1,1'-biphenyl]yl-omega -hydroxy-poly(oxy-2-ethanediyl) 。