C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 9/6533 (2006.01) C07F 9/146 (2006.01) C07F 9/26 (2006.01) C07F 9/48 (2006.01) C07F 9/553 (2006.01) C07F 9/59 (2006.01) C08K 5/51 (2006.01) C08K 5/5399 (2006.01) C08L 101/00 (2006.01)
Patent
CA 2065406
- 49 - HOE 89/F 282 K Abstract of the disclosure: Aryl halophosphoramidites, aryl phosphonamidites, proces- ses for their preparation and their use for the stabilization of plastics A process for the preparation of aryl phosphonamidites of the formula (I) Image (I) in which R1, as a univalent radical, is certain aromatic hydrocar- bon radicals which can carry substituents, in particular a non-aromatic hydrocarbon radical, alkoxy, alkylthio, aryl, aryloxy or halogen, and R1, as a divalent radical, is a phenylene, naphthylene or biphenylene radical which can carry non-aromatic hydrocarbon radicals as substitu- ents, R2 is a non-aromatic hydrocarbon radical, aryl or an optionally substituted arylmethyl radical, R3 is hydrogen, alkoxy or alkylthio or a group mentioned under R2, R4 and R5 are in each case C1-C22-alkyl, C2-C21-oxaalkyl or -thiaalkyl, C3-C18-alkenyl or -alkynyl, C3-C24-alkoxycar- bonylalkyl, C5-C12-cycloalkyl, C6-C14-aryl, C7-C15-arylalkyl or an optionally substituted C5-C17,-piperidin-4-yl qroup, or, together with the nitrogen atom, form a ring system having 5 to 7 ring atoms which can still additionally contain an oxygen, nitrogen or sulfur atom bonded via at least one carbon atom, and n = 1 or 2, in which initially a halide R1(-X)n, in which R1 and n have the abovementioned meaning and X is a halogen having - 50 - an atomic weight of at least 35, is reacted with mag- nesium to give the corresponding Grignard compounds R1(MgX)n and these are reacted further with aryl halophos- phoramidites of the formula (II) Image (II) in which R2 to R5 have the meaning mentioned and X is chlorine or bromine, to give the phosphonamidites (I). The invention further relates to certain compounds of the formulae (I) and (II), to a process for the preparation of compounds of the formula (II), to the use of compounds of the formula (I) alone or in combination with a phenolic antioxidant for the stabilization of plastics and to the plastic molding compositions stabilized in this way. These molding compositions are distinguished by improved properties compared to those molding compositions which contain phosphonites prepared according to the prior art.
Boehshar Manfred
Kleiner Hans-Jerg
Pfahler Gerhard
Boehshar Manfred
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
Kleiner Hans-Jerg
Pfahler Gerhard
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