| 摘要 |
<p>A method is disclosed for increasing the hydrolytic stability of a stabilizer selected tioip the group consisting of (A) a first phosphite of the structure: (I) and (B) a first phosphonite of the structure: (II) wherein R1, R2, R/ R4, R/ K/ R/ R/ R9, and R10 are independently selected from the group consisting of hydrogen and alky L provided that at least one oi'R1, R2, R/ R / R:/ R6, Rv. Rs. Rv, and R!0 is aikyl, and n is 2; wherein said method conipriscs blending said stabilizer with (a) from about 1 to about 25 weight percent, based on the total weight of the resulting blend, of a second phosphite of the structure wherein R1 ', R1-, R'J, R!". and R?' fire independently selected from the group consisting of h/drogen and alky!, provided that at least one of RH, R' / Rl/ Ru, and R!5 is alkvl, and R!(' and R'1 - are independently selected alky! groups; and (b) ir?m about J to about 10 vveiglu percent, based on the total weight of the resulting blend, of an acid scavenger.</p> |
