| 摘要 |
PROBLEM TO BE SOLVED: To provide a rigid vinyl chloride resin sheet improved in the retention of heat resistance and initial discoloration, excellent in heat stability, capable of coping with the enlargement and speed-up of processing machines, and usable for packaging materials excellent in transparency, processability and sanitation. SOLUTION: This sheet is made from 100 pts.wt. vinyl chloride resin, 0.01-1 pt.wt. calcium compound, 0.01-1 pt.wt. zinc compound, 0.01-5 pt.wt. epoxidized vegetable oil, 0.01-1 pt.wt.β-diketone compound, and 0.05-0.5 pt.wt. ester compound. The average-degree of polymerization of the vinyl chloride resin is 600-900, and the ester compound is a mixed ester of pentaerythritol with a 11-20 C higher fatty acid and a 4-6 C saturated dibasic acid. |
