A new plasticizer reportedly offers flexible PVC compounders higher powder bulk density, which can enhance extrusion rates.
A new plasticizer reportedly offers flexible PVC compounders higher powder bulk density, which can enhance extrusion rates. Lower efficiency and lower density of this plasticizer are said to result in lower cost per cubic inch, while its weather resistance makes it a strong candidate for outdoor applications. Developed by BASF Corp., Chemicals, Florham Park, N.J., Palatinol DPHP is a C10 phthalate (2-propyl heptanol ester) that reportedly performs as well as or better than standard DIDP. DPHP boasts better uv stability than most general-purpose plasticizers, making it especially suitable for applications like roofing, geomembranes, or tarpaulins. Color stability and aging performance are dramatically improved with DPHP rather than DIDP, BASF reports. Company researchers say only minor compound changes are needed to adapt DIDP wire formulations to DPHP. It also looks promising for auto interiors, where it reportedly matches DIDP performance. Researchers note that C10 branched phthalates (DPHP, DIDP) are 11% less efficient than DEHP, which results in improved cold flexibility.