| abstract |
"Bisphosphitosmonomers and oligomers as stabilizers for poly (vinyl chloride). Compositions are described containing (i) a halogenated polymeric material and (ii) at least one phosphite of formula I ** FORMULA 1 ** where n is a number from 1 to 6, R is a bivalent link in the formulas ** FORMULA 2 ** ** FORMULA 3 ** m is a number from 1 to 5, R {Sub, 1}, R {sub, 2}, R {sub, 3} and R {sub, 4}, independently of each other, mean C {sub, 4} -C {sub, 22} alkyl, C {sub, 7} -C {sub, 9} phenylalkyl, C {sub, 5} -C {sub, 8} cycloalkyl or (C {sub, 1} -C {sub, 4} alkyl) - C {sub, 5} -C {sub, 8} cycloalkyl or R { sub, 1} and R {sub, 2} and / or R {sub, 3} and R {sub, 4}, together, mean C {sub, 2} -C {sub, 9} alkylene or a group of the formula ** FORMULA 4 ** as well as new compounds of formula I and their use as stabilizers. |