Abstract:
Process for preparing aryl esters of phosphonous acid of formula (V), where A is non-existent or a direct bond or a divalent hydrocarbon bridge with 1 to 6 carbon atoms, which can be substituted by the groups mentioned below, or a heteroatom, cycloalkylidene with 4 to 8 carbon atoms or phenylalkylidene with 7 to 12 carbon atoms, n is equal to 1 or 2, R as a monovalent residue denotes certain non-aromatic or aromatic hydrocarbon residues, the aromatic residues denoting substituents such as alkyl, alkoxy, alkylthio, dialkylamino, aryl, aryloxy or halogen, and as a divalent residue denotes a phenylene or naththylene residue, which can carry non-aromatic hydrocarbon residues as substituents, R is a non-aromatic hydrocarbon residue with 1 to 18 carbon atoms, aryl, arylmethyl, arylethyl or arylisopropyl, each aryl containing 6 to 10 carbon atoms, and R denotes hydrogen or one of the groups mentioned under R . In a first stage a halogenated hydrocarbon R (-Hal)n, in which R has the above-mentioned meaning, n = 1 or 2, and the halogen has an atomic weight of at least 35, is converted under Grignard conditions with at least molar quantities of magnesium to the corresponding organomagnesium compounds R (MgHal)n. These are reacted in a second stage with phosphoric acid-bis-arylester halides of formula (VI), where R , R and Hal have the above-mentioned meanings, to form the phosphonous acid arylester (V). The invention also relates to a plastics moulding material, in particular a polyolefin moulding material, containing the phosphonous acid arylester of formula (V). The properties of the moulding material are superior to those of materials which contain phosphonites produced by prior art techniques.
Abstract:
Process for preparing aryl esters of phosphonous acid of formula (V), where A is non-existent or a direct bond or a divalent hydrocarbon bridge with 1 to 6 carbon atoms, which can be substituted by the groups mentioned below, or a heteroatom, cycloalkylidene with 4 to 8 carbon atoms or phenylalkylidene with 7 to 12 carbon atoms, n is equal to 1 or 2, R1 as a monovalent residue denotes certain non-aromatic or aromatic hydrocarbon residues, the aromatic residues denoting substituents such as alkyl, alkoxy, alkylthio, dialkylamino, aryl, aryloxy or halogen, and as a divalent residue denotes a phenylene or naththylene residue, which can carry non-aromatic hydrocarbon residues as substituents, R2 is a non-aromatic hydrocarbon residue with 1 to 18 carbon atoms, aryl, arylmethyl, arylethyl or arylisopropyl, each aryl containing 6 to 10 carbon atoms, and R3 denotes hydrogen or one of the groups mentioned under R2. In a first stage a halogenated hydrocarbon R1(-Hal)¿n?, in which R?1¿ has the above-mentioned meaning, n = 1 or 2, and the halogen has an atomic weight of at least 35, is converted under Grignard conditions with at least molar quantities of magnesium to the corresponding organomagnesium compounds R1(MgHal)¿n?. These are reacted in a second stage with phosphoric acid-bis-arylester halides of formula (VI), where R?2, R3¿ and Hal have the above-mentioned meanings, to form the phosphonous acid arylester (V). The invention also relates to a plastics moulding material, in particular a polyolefin moulding material, containing the phosphonous acid arylester of formula (V). The properties of the moulding material are superior to those of materials which contain phosphonites produced by prior art techniques.
Abstract:
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.
Abstract:
The present invention relates to plastics comprising a high molecular weight, sterically hindered amine, wherein the sterically hindered amine is at least one amine from the group consisting of I: oligomerized 2,2,4,4-tetramethyl-20(oxiranyl-methyl)-7-oxa-3,20-diazadispiro¢5.1.11.2!heneicosan-21-one, II: condensation product of 2-chloro-4,6-di(4-n-butylamino-1,2,2,6,6-pentamethylpiperidyl)-1,3,5-triazine and 1,2-bis(3-aminopropylamino)ethane, and III: condensation product of 1-hydroxyethyl-2,2,6,6-tetramethyl-4-hydroxypiperidine and succinic acid. These plastics exhibit a reduced rate of uptake of sulfur compounds. The invention further relates to shaped articles made from these plastics.
Abstract:
In synthetic moulding compositions, especially those based on olefin polymers, which contain phenolic stabilisers and metal ions as catalyst residues, the discoloration at the processing temperature is reduced when they contain triglycerol or ditrimethylolpropane as catalyst inactivators.