C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 9/48 (2006.01) C07F 9/6571 (2006.01) C07F 9/6574 (2006.01) C08K 5/53 (2006.01) C08K 5/5393 (2006.01) C08L 101/00 (2006.01)
Patent
CA 2058762
A process for the preparation of aryl phosphonites of the formula V (see formula I) in which A is non-existent or a direct bond or a divalent hydrocarbon bridge having 1 to 6 carbon atoms which may be substituted by groups mentioned further below under R1, or is a hetero atom, cycloalkylidene having 4 to 8 carbon atoms or phenylalkylidene having 7 to 12 carbon atoms, n is 1 or 2, R1 as monovalent radical is certain non-aromatic or aromatic hydrocarbon radicals, in which the aromatic radicals are substituents such as alkyl, alkoxy, alkylthio, dialkylamino, aryl, aryloxy or halogen, and as divalent radical a phenylene or naphthylene radical, which may carry non-aromatic hydrocarbon radicals as substituents, R2 is a non-aromatic hydrocarbon radical having 1 to 18 carbon atoms, aryl, arylmethyl, arylethyl or arylisopropyl, in which the aryl in each case contains 6 to carbon atoms, and R3 is hydrogen or a group mentioned under R2, in which process in a first step a hydrocarbon halide R1(-Hal)n, in which R1 has the abovementioned meaning, n is = 1 or 2 and the halogen has an atomic weight of at least 35, is reacted under Grignard conditions with at least molar amounts of magnesium to give the corresponding Grignard compounds R1(MgHal)n and these compounds are reacted in a second step with bisaryl halophosphonites of the formula VI (see formula I) , in which R2, R3 and Hal ha,e the abovementioned meaning, with the formation of the aryl phosphonites V. The invention further relates to a plastic molding composition, in particular a polyolefin molding composition containing aryl phosphonites of the formula V. The molding composition is distinguished by improved properties compared with those molding compositions containing phosphonites prepared by the prior art.
Boehshar Manfred
Kleiner Hans-Jerg
Pfahler Gerhard
Clariant Gmbh
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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