Synonyms: Hexanedioic acid, polymer with 1,4-butanediol, .alpha.-hydro-.omega.-hydroxypoly(oxy-1,4-butanediyl) and 1,1'-methylenebis[4-isocyanatobenzene];Hexanedioic acid, polymer with 1,4-butanediol, α-hydro-ω-hydroxypoly( oxy-1,4-butanediyl) and 1,1'-methylenebis[4-isocyanatobenzene]