Synonyms: Poly(oxy-p-phenylenecarbonyl) (8CI); 4-Acetoxybenzoic acid homopolymer, SRU; 4-Hydroxybenzoic acid homopolymer,SRU; 4-Hydroxybenzoic acid polymer, SRU; E 101M; E 101S; Ekonol E 101; Ekonol E 101M;Ekonol E 101S; K 5; K 5 (polyester); Phenyl p-hydroxybenzoate polymer, SRU; Poly(4-acetoxybenzoic acid), sru; Poly(4-hydroxybenzoate); Poly(4-hydroxybenzoic acid),SRU; Poly(oxycarbonyl-1,4-phenylene); Poly(oxycarbonyl-p-phenylene);Poly(p-acetoxybenzoic acid), SRU; Poly(p-hydroxybenzoate); Poly(p-hydroxybenzoicacid), SRU; Poly(p-hydroxybenzoic acid), SRU; Poly(p-oxybenzoate); Poly(p-oxybenzoyl);Poly(phenyl p-hydroxybenzoate), SRU; Sumika Super E 101; Sumika SuperE 101M; SumikaSuper E 101S; p-Acetoxybenzoic acid homopolymer, sru; p-Acetoxybenzoic acid polymer, SRU; p-Hydroxybenzoicacid homopolymer, SRU; p-Hydroxybenzoicacid polymer, SRU