@misc{EvtimovaLozevaSchmidtetal.2003, author = {Evtimova, Rozeta and Lozeva, Yordanka and Schmidt, Karl-Heinz and Wotzka, Michael and Wagner, Peter and Behrendt, Gerhard}, title = {Polyester Polyols from Waste PET Bottles for Polyurethane Rigid Foams}, series = {Wissenschaftliche Beitr{\"a}ge 2003}, volume = {8}, journal = {Wissenschaftliche Beitr{\"a}ge 2003}, issn = {0949-8214}, doi = {10.15771/0949-8214_2003_1_4}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-3795}, pages = {19 -- 25}, year = {2003}, abstract = {This paper describes a modified process to produce polyester polyols from PET wastes derived from the "bottle fraction residue" of the German Dual System (DSD) [11] employing a waste oligoester condensate of the polyesterification process with the addition of some glycols of longer chain and occasional modification with further dicarboxylic acids to produce polyester polyols of a broad range of properties which are further reacted to form polyurethane or polyisocyanurate rigid foams for insulation, construction materials, or coatings.}, language = {en} }