| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide thermoplastic nucleating additive formulations that include milled, small particle size, solid bicyclo[2.2.1]heptane dicarboxylate salts, and also at least one anticaking agent, and that are for improved haze reduction, for improved nucleation performance, and for prevention of potential cementation (via agglomeration) of the salt component present therein. <P>SOLUTION: The small particle size dicarboxylate salts provide desirable properties within thermoplastic articles, particularly as nucleating agents, but apparently suffer from certain clarity issues and agglomeration problems (due to the flat and thin plate structures of such compounds and the propensity they exhibit to cohere to each other during storage), making utilization thereof less desirable for certain applications. Thus, an improvement has been provided to permit full benefit of the excellent crystallization temperatures, stiffness, and calcium stearate compatibility such dicarboxylate salts accord within target low haze thermoplastics. Furthermore, unexpected improvements in dusting reduction have been found upon the utilization of such anticaking additives in combination with the nucleating salts. Thermoplastic additive compositions and methods of producing thermoplastics with such nucleator/anticaking additive combinations are also contemplated within this invention. <P>COPYRIGHT: (C)2012,JPO&INPIT |
