Polar aromatics, consisting of high molecular weight phenols and carboxylic acids produced by partial oxidation of the material
pˈoʊlɚɹ ɚɹoʊmˈæɾɪks, kənsˈɪstɪŋ ʌv hˈaɪ məlˈɛkjʊlɚ wˈeɪt fˈɛnɑːlz ænd kˌɑːɹbəksˈɪlɪk ˈæsɪdz pɹədˈuːst baɪ pˈɑːɹʃəl ˌɑːksɪdˈeɪʃən ʌvðə mətˈɪɹiəl