Polyolefin light stabilizers

Details Polyolefin light stabilizers Polyolefin light stabilizers

1975-04-07

1976-10-05

Engle, Samuel W.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252402, 252404, 260 459NP, 260 4595F, C09K 1532, C09K 1526, C09K 1508, C08K 505

Patent

active

039843483

ABSTRACT:
O,O-Bis(aryl)amidothiophosphates, useful as light stabilizers in polyolefins, are those having the formula: ##EQU1## wherein: R is hydrogen, alkyl of 1-12 carbons, or halogen; Ar is phenyl or naphthyl; n is 1 or 2; and R' and R", which may be the same or different, are each selected from the group consisting of hydrogen, alkyl of 1-18 carbons, 2,2,6,6-tetramethyl-4-piperidyl, cycloalkyl of 5-6 carbons or both R' and R", together with the N to which they are attached, form a morpholino or piperidino ring. Such compounds are made by reacting PSCl.sub.3 with two moles of a phenol and then the product thereof with an amine.

REFERENCES:
patent: 2615037 (1952-10-01), Moyle
patent: 2615038 (1952-10-01), Moyle
patent: 2994638 (1961-08-01), Malz
patent: 3038924 (1962-06-01), Schoot
patent: 3218294 (1965-11-01), Rodgers
patent: 3260712 (1966-07-01), Schrader
patent: 3359233 (1967-12-01), Mirviss
patent: 3491057 (1970-01-01), Kato
patent: 3641213 (1972-02-01), Rodgers
patent: 3702878 (1972-11-01), Saito
patent: 3923733 (1975-12-01), Spector
patent: 3925518 (1975-12-01), Spector

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