CASTOR OIL WATERBORNE POLYURETHANES FROMA BIOBASED CARBOXYLIC ACID

MARÍA E. V. HORMAIZTEGUI; VERÓNICA L. MUCCI; MIRTA I. ARANGUREN

Bangkok

Conferencia; Plastics Processing Exhibition & Submmit ? 3er Edition ? PPES 2017; 2017

From the last few decades, bio based polyurethane have been used extensively due to the increasing concerns about the consumption of nonrenewable resources. Specially, waterborne polyurethane (WBPU) derived from vegetable oils have been developed in order to reduce the emissions of volatile organic compounds (VOCs) during coating application into the atmosphere in comparison with the solvent borne polyurethanes. In addition, most of the WBPUs are synthesized using dimethylolpropionic acid (DMPA) to introduce an ionic center in the molecular structure. Instead, in the present work, a bio-genic reagent, tartaric acid (TA), was used with that same aim. TA can be obtained as a by-product from the processing of grapes for wine.