Abstract: Polyoxymethylene polymer compositions and molded articles made from the composition are disclosed that are fuel resistant, particularly diesel fuel resistant, and resistant to highly acidic solutions. The polymer composition contains a polyoxymethylene polymer generally in an amount from about 90% to about 95% by weight. In addition, the polymer composition contains an acid neutralizing agent and a plasticizer at a weight ratio that has been found to significantly improve the acid resistant properties of the composition.

Abstract: Polyoxymethylene polymer compositions and molded articles made from the composition are disclosed that are fuel resistant, particularly diesel fuel resistant, and resistant to highly acidic solutions. The polymer composition contains a polyoxymethylene polymer generally in an amount from about 90% to about 95% by weight. In addition, the polymer composition contains an acid neutralizing agent and a plasticizer at a weight ratio that has been found to significantly improve the acid resistant properties of the composition.

Abstract: Polyoxymethylene polymer compositions and molded articles made from the composition are disclosed that are fuel resistant, particularly diesel fuel resistant, and resistant to highly acidic solutions. The polymer composition contains a polyoxymethylene polymer generally in an amount from about 90% to about 95% by weight. In addition, the polymer composition contains an add neutralizing agent and a plasticizer at a weight ratio that has been found to significantly improve the add resistant properties of the composition.

Abstract: Polyoxymethylene polymer compositions and molded articles made from the composition are disclosed that are fuel resistant, particularly diesel fuel resistant, and resistant to highly acidic solutions. The polymer composition contains a polyoxymethylene polymer generally in an amount from about 90% to about 95% by weight. In addition, the polymer composition contains an add neutralizing agent and a plasticizer at a weight ratio that has been found to significantly improve the add resistant properties of the composition.

Abstract: Synthesis and use of a new class of polymeric materials with favorable separation characteristics for the dehydration of ethanol and other organic solvents is described herein. The thermally rearranged (TR) polybenzoxazole (PBO), polybenzimidazole (PBI) and polybenzothiazole (PBT) membranes of the present invention can be used for the dehydration of ethanol during processing to fuel grade biodiesel by either pervaporation or vapor permeation. The unique microstructure of the membranes provides excellent separation characteristics, and this, coupled with their inherent thermal and chemical stability, enables their usage in other separations, such as the dehydration of other organic solvents.