Pentaerythritol-spiro-bis-phosphite compositions are provided having an improved hydrolytic stability, comprising (1) a pentaerythritol-spiro-bis-phosphite of the formula:
wherein:
R, and R2 are selected from the group consisting of alkyl and alkylaryl groups having at least fourteen carbon atoms up to about thirty-six carbon atoms; and
(2) a long-chain aliphatic amine in an amount to improve the hydrolytic stability of the phosphite and having the formula:
wherein:
R3, R4, and R5 are selected from the group consisting of hydrogen; aliphatic (including alkyl and alkenyl) groups having from one to about thirty-six carbon atoms; and hydroxyalkyl having from two to about six carbon atoms; one of R3, R4 and R5 is an aliphatic group having at least fourteen carbon atoms, and the remaining of R3, R4 and R5 are selected from hydrogen, alkyl having from one to four carbon atoms and hydroxyalkyl; and preferably at least one of R3, R4 and R5 is hydroxyalkyl.
提供了具有更好
水解稳定性的
季戊四醇螺二
亚磷酸组合物,其中包括 (1) 式中的
季戊四醇螺二
亚磷酸:
其中
R和R2选自由至少具有十四个碳原子至约三十六个碳原子的烷基和烷芳基所组成的组;和
(2) 长链脂肪族胺,其用量可提高
亚磷酸酯的
水解稳定性,其式为
其中
R3、R4 和 R5 选自由氢、具有一至约三十六个碳原子的脂肪族(包括烷基和烯基)基团和具有二至约六个碳原子的羟烷基组成的组;R3、R4 和 R5 中的一个是具有至少十四个碳原子的脂肪族基团,R3、R4 和 R5 中的其余部分选自由氢、具有一至四个碳原子的烷基和羟烷基;优选 R3、R4 和 R5 中的至少一个是羟烷基。