| 摘要 |
PROBLEM TO BE SOLVED: To obtain a vinyl chloride resin sheet excellent in the persistence of heat resistance by compounding a vinyl chloride resin with a Ca compd., a Zn compd., an epoxidized vegetable oil, a hydrotalcite compd., and a polyhydric alcohol or its fatty acid ester. SOLUTION: 100 pts.wt. vinyl chloride resin having an average degree of polymn. of 500-1,000 is mixed with 0.01-2 pts.wt. Ca compd. (e.g. Ca stearate), 0.01-2 pts.wt. Zn compd. (e.g. Zn naphthenate), 0.1-5 pts.wt. epoxidized vegetable oil, 0.01-5 pts.wt. hydrotalcite compd. represented by the formula (wherein 2w+3x=y+2z; 2<=w<=6; and 2<=m<=4), 0.05-3 pts.wt. polyhydric alcohol having at least two hydroxyl groups (e.g. glycerin) or its fatty acid ester, and if necessary further with 0.01-1 pt.wt.β-diketone compd., an org. phosphite compd., a plasticizer, etc., kneaded, and calendered to give a 0.05-1mm-thick vinyl chloride resin sheet having a softening point of 50-80 deg.C.
|
