Stabilization of poly(mono-olefins)

Claim 1

A method of stabilizing polymono-olefins normally subject to ultraviolet deterioration comprising the addition of 0.01-5% by weight of a compound of formula I ##STR5## or a mixture of isomers thereof or an acid addition salt thereof wherein R 1 is alkyl having 2-6 C-atoms, R 2 is alkyl having 1-6 C-atoms, R 3 is alkyl having 1-9 C-atoms, phenyl, benzyl or phenylethyl, R 4 is alkyl having 1-6 C-atoms or R 3 and R 4 together with the C-atom to which they are attached represent a cyclopentyl or cyclohexyl group, R 5 is alkyl having 1-5 C-atoms, alkenyl or alkinyl having 3-4 C-atoms or aralkyl having 7-8 C-atoms, R 6 is hydrogen, alkyl having 1-5 C-atoms, alkenyl or alkinyl having 3-4 C-atoms, aralkyl having 7-8 C-atoms, and R 5 and R 6 are interchangeable, n is 1 or 2, and if n is 1, X is hydrogen, the oxyl radical, alkyl having 1-8 C-atoms, alkenyl having 3-6 C-atoms, alkinyl having 3 or 4 C-atoms, alkoxyalkyl having 2-21 C-atoms, aralkyl having 7-8 C-atoms, the 2,3-epoxypropyl group, an aliphatic acyl group having 1-12 C-atoms, or one of the groups --CH 2 COOR 7 , --CH 2 CH(R 8 )--OR 9 or --COOR 10 , wherein R 7 is alkyl having 1-12 C-atoms, alkenyl having 3-6 C-atoms, phenyl, aralkyl having 7-8 C-atoms or cyclohexyl R 8 is H, CH 3 or phenyl, R 9 is H or an aliphatic, aromatic, alicyclic or araliphatic acyl group having up to 18 C-atoms which may optionally be substituted in its aryl moiety with chlorine, alkyl having 1-4 C-atoms, alkoxy having 1-8 C-atoms or hydroxy, and combination thereof R 10 is alkyl having 1-12 C-atoms, benzyl, cyclohexyl or phenyl and if n is 2, X is alkylene having 4-8 C-atoms, 2-butenylene-1,4-, a group --CH 2 CH(R 8 )--O--R 11 --O--CH(R 8 )--CH 2 --, wherein R 11 is an aliphatic or aromatic diacyl group having up to 12 C-atoms or X is a group --CH 2 --COO--R 12 --OOC--CH 2 --, wherein R 12 is alkylene having 2-8 C-atoms or xylylene.

Claim 2

A method of stabilizing polymono-olefins normally subject to ultraviolet deterioration comprising the addition of 0.01-5% by weight of a compound of formula I ##STR5## or a mixture of isomers thereof or an acid addition salt thereof wherein R 1 is alkyl having 2-6 C-atoms, R 2 is alkyl having 1-6 C-atoms, R 3 is alkyl having 1-9 C-atoms, phenyl, benzyl or phenylethyl, R 4 is alkyl having 1-6 C-atoms or R 3 and R 4 together with the C-atom to which they are attached represent a cyclopentyl or cyclohexyl group, R 5 is alkyl having 1-5 C-atoms, alkenyl or alkinyl having 3-4 C-atoms or aralkyl having 7-8 C-atoms, R 6 is hydrogen, alkyl having 1-5 C-atoms, alkenyl or alkinyl having 3-4 C-atoms, aralkyl having 7-8 C-atoms, and R 5 and R 6 are interchangeable, n is 1 or 2, and if n is 1, X is hydrogen, the oxyl radical, alkyl having 1-8 C-atoms, alkenyl having 3-6 C-atoms, alkinyl having 3 or 4 C-atoms, alkoxyalkyl having 2-21 C-atoms, aralkyl having 7-8 C-atoms, the 2,3-epoxypropyl group, an aliphatic acyl group having 1-12 C-atoms, or one of the groups --CH 2 COOR 7 , --CH 2 CH(R 8 )--OR 9 or --COOR 10 , wherein R 7 is alkyl having 1-12 C-atoms, alkenyl having 3-6 C-atoms, phenyl, aralkyl having 7-8 C-atoms or cyclohexyl R 8 is H, CH 3 or phenyl, R 9 is H or an aliphatic, aromatic, alicyclic or araliphatic acyl group having up to 18 C-atoms which may optionally be substituted in its aryl moiety with chlorine, alkyl having 1-4 C-atoms, alkoxy having 1-8 C-atoms or hydroxy, and combination thereof R 10 is alkyl having 1-12 C-atoms, benzyl, cyclohexyl or phenyl and if n is 2, X is alkylene having 4-8 C-atoms, 2-butenylene-1,4-, a group --CH 2 CH(R 8 )--O--R 11 --O--CH(R 8 )--CH 2 --, wherein R 11 is an aliphatic or aromatic diacyl group having up to 12 C-atoms or X is a group --CH 2 --COO--R 12 --OOC--CH 2 --, wherein R 12 is alkylene having 2-8 C-atoms or xylylene.