THE USE OF SUB-MICRON PARTICLE SIZE CALCIUM CARBONATE FILLER AND ESTER MODIFIED LUBRICANT SYSTEMS TO ADD VALUE OR PERFORMANCE TO RIGID PVC FORMULATIONS

摘要

Formulators are constantly being asked to lower cost, improve performance, or both. This paper addresses this problem by reporting on the evaluation of an old standard calcium stearate paraffin lube system and one micron filler, vs. sub-micron fillers with ester modified lube systems. In the past this approach has been successful in allowing the use of lower modifier levels, or higher filler levels, without loss of properties, with modifier levels lowered from 4.5 to 3.0phr. (1) This paper answers the question, "Is there any merit to using this approach when the modifier ranges from 2 to 0phr?" with the goal of eliminating the modifier altogether.