US 2001/0018520 A1 · Hydroxy-substituted N-alkoxy hindered amines and compositions stabilized therewith

Abstract

Hindered amines substituted on the N-atom with an —O—E—OH moiety are particularly effective in stabilizing polyolefin and automotive coating compositions against the deleterious effects of oxidative, thermal and actinic radiation where the presence of the OH group on the compounds adds important properties not attainable by the use of normal —O—E moieties.

A compound having 1-alkoxy substituted hindered amine derivatives where the alkoxy moiety is substituted by one to three hydroxy groups as described in formulas (1) to (15);

or to novel compounds having 1-alkoxy bridged hindered amine derivatives where the alkoxy moiety, substituted by one to three hydroxy groups, is shared by two hindered amine molecules as described in formulas (16) to (28);
or to oligomeric or polymeric hindered amine molecules made from the reaction of dialkyl esters or isocyanates with hydroxy substituted N-alkoxy derivatives of 4-hydroxy-2,2,6,6-tetraalkylpiperidine as described in formula (29);
or to simple diester or urethane derivatives of hydroxy substituted N-alkoxy derivatives of 4-hydroxy-2,2,6,6-tetramethylpiperidine as described in formula (30) 11
wherein
G1 and G2 are independently alkyl of 1 to 4 carbon atoms, or G1 and G2 together are pentamethylene;
preferably G1 and G2 are each methyl;
E is a straight or branched chain alkylene of 1 to 18 carbon atoms, cycloalkylene of 5 to 18 carbon atoms, cycloalkenylene of 5 to 18 carbon atoms, a straight or branched chain alkylene of 1 to 4 carbon atoms substituted by phenyl or by phenyl substituted by one or two alkyl groups of 1 to 4 carbon atoms;
b is 1, 2 or 3 with the proviso that b cannot exceed the number of carbon atoms in E or L, and when b is 2 or 3, each hydroxyl group is attached to a different carbon atoms of E or L;
the two hindered amine groups are generally, but not always, attached to two different carbon atoms of L;
in each of the formulas (1) to (15)
m is 0 or 1;
R1 is hydrogen, hydroxyl or hydroxymethyl;
R2 is hydrogen, alkyl of 1 to 12 carbon atoms or alkenyl of 2 to 12 carbon atoms;
n is 1 to 4;
when n is 1,
R3 is alkyl of 1 to 18 carbon atoms, alkoxycarbonylalkylenecarbonyl of 4 to 18 carbon atoms, alkenyl of 2 to 18 carbon atoms, glycidyl, 2,3-dihydroxypropyl, 2-hydroxy or 2-(hydroxymethyl) substituted alkyl of 3 to 12 carbon atoms which alkyl is interrupted by oxygen, an acyl radical of an aliphatic or unsaturated aliphatic carboxylic or carbamic acid containing 2 to 18 carbon atoms, an acyl radical of a cycloaliphatic carboxylic or carbamic acid containing 7 to 12 carbon atoms, or acyl radical of an aromatic acid containing 7 to 15 carbon atoms;
when n is 2,
R3 is alkylene of 2 to 18 carbon atoms, a divalent acyl radical of an aliphatic or unsaturated aliphatic dicarboxylic or dicarbamic acid containing 2 to 18 carbon atoms, a divalent acyl radical of a cycloaliphatic dicarboxylic or dicarbamic acid containing 7 to 12 carbon atoms, or a divalent acyl radical of an aromatic dicarboxylic acid containing 8 to 15 carbon atoms;
when n is 3,
R3 is a trivalent acyl radical of an aliphatic or unsaturated aliphatic tricarboxylic acid containing 6 to 18 carbon atoms, or a trivalent acyl radical of an aromatic tricarboxylic acid containing 9 to 15 carbon atoms;
when n is 4,
R3 is a tetravalent acyl radical of an aliphatic or unsaturated aliphatic tetracarboxylic acid, especially 1,2,3,4-butanetetracarboxylic acid, 1,2,3,4-but-2-enetetracarboxylic acid, 1,2,3,5-pentanetetracarboxylic acid and 1,2,4,5-pentanetetracarboxylic acid, or R3 is a tetravalent acyl radical of an aromatic tetracarboxylic acid containing 10 to 18 carbon atoms;
p is 1 to 3,
R4 is hydrogen, alkyl of 1 to 18 carbon atoms or acyl of 2 to 6 carbon atoms;
when p is 1,
R5 is hydrogen, alkyl of 1 to 18 carbon atoms, an acyl radical of an aliphatic or unsaturated aliphatic carboxylic or carbamic acid containing 2 to 18 carbon atoms, an acyl radical of a cycloaliphatic carboxylic or carbamic acid containing 7 to 12 carbon atoms, an acyl radical of an aromatic carboxylic acid containing 7 to 15 carbon atoms, or R4 and R5 together are —(CH2)5CO—, phthaloyl or a divalent acyl radical of maleic acid;
when p is 2,
R5 is alkylene of 2 to 12 carbon atoms, a divalent acyl radical of an aliphatic or unsaturated aliphatic dicarboxylic or dicarbamic acid containing 2 to 18 carbon atoms, a divalent acyl radical of a cycloaliphatic dicarboxylic or dicarbamic acid containing 7 to 12 carbon atoms, or a divalent acyl radical of an aromatic dicarboxylic acid containing 8 to 15 carbon atoms;
when p is 3,
R5 is a trivalent acyl radical of an aliphatic or unsaturated aliphatic tricarboxylic acid containing 6 to 18 carbon atoms, or a trivalent acyl radical of an aromatic tricarboxylic acid containing 9 to 15 carbon atoms;
when n is 1,
R6 is alkoxy of 1 to 18 carbon atoms, alkenyloxy of 2 to 18 carbon atoms, —NHalkyl of 1 to 18 carbon atoms or —N(alkyl)2 of 2 to 36 carbon atoms,
when n is 2,
R6 is alkylenedioxy of 2 to 18 carbon atoms, alkenylenedioxy of 2 to 18 carbon atoms, — NH-alkylene-NH— of 2 to 18 carbon atoms or —N(alkyl)-alkylene-N(alkyl)— of 2 to 18 carbon atoms, or R6 is 4-methyl-1,3-phenylenediamino,
when n is 3,
R6 is a trivalent alkoxy radical of a saturated or unsaturated aliphatic triol containing 3 to 18 carbon atoms,
when n is 4,
R6 is a tetravalent alkoxy radical of a saturated or unsaturated aliphatic tetraol containing 4 to 18 carbon atoms,
R7 and R8 are independently chlorine, alkoxy of 1 to 18 carbon atoms, —O—T1, amino substituted by 2-hydroxyethyl, —NH(alkyl) of 1 to 18 carbon atoms, —N(alkyl)T1 with alkyl of 1 to 18 carbon atoms, or —N(alkyl)2 of 2 to 36 carbon atoms,
R9 is a divalent oxygen atom, or R9 is a divalent nitrogen atom substituted by either hydrogen, alkyl of 1 to 12 carbon atoms or T1 12
R10 is hydrogen or methyl,
q is 2 to 8,
R11 and R12 are independently hydrogen or the group T2 13
R13 is hydrogen, phenyl, straight or branched alkyl of 1 to 12 carbon atoms, alkoxy of 1 to 12 carbon atoms, straight or branched alkyl of I to 4 carbon atoms substituted by phenyl, cycloalkyl of 5 to 8 carbon atoms, cycloalkenyl of 5 to 8 carbon atoms, alkenyl of 2 to 12 carbon atoms, glycidyl, allyloxy, straight or branched hydroxyalkyl of 1 to 4 carbon atoms, or silyl or silyloxy substituted three times independently by hydrogen, by phenyl, by alkyl of 1 to 4 carbon atoms or by alkoxy of 1 to 4 carbon atoms;
R14 is hydrogen or silyl substituted three times independently by hydrogen, by phenyl, by alkyl of 1 to 4 carbon atoms or by alkoxy of 1 to 4 carbon atoms;
d is 0 or 1;
h is 0 to 4;
k is 0 to 5;
x is 3 to 6;
y is 1 to 10;
z is an integer such that the compound has a molecular weight of 1000 to 4000 amu,
R15 is morpholino, piperidino, 1-piperizinyl, alkylamino of 1 to 8 carbon atoms, especially branched alkylamino of 3 to 8 carbon atoms such as tert-octylamino, —N(alkyl)T1 with alkyl of 1 to 8 carbon atoms substituted by T1 or —N(alkyl)2 of 2 to 16 carbon atoms,
R16 is hydrogen, acyl of 2 to 4 carbon atoms, carbamoyl substituted by alkyl of 1 to 4 carbon atoms, s-triazinyl substituted once by chlorine and once by R15, or s-triazinyl substituted twice by R15 with the condition that the two R15 substituents may be different;
R17 is chlorine, amino substituted by alkyl of 1 to 8 carbon atoms or by T1, —N(alkyl)T1 with alkyl of 1 to 8 carbon atoms, —N(alkyl)2 of 2 to 16 carbon atoms, or the group T3 14
R18 is hydrogen, acyl of 2 to 4 carbon atoms, carbamoyl substituted by alkyl of 1 to 4 carbon atoms, s-triazinyl substituted twice by —N(alkyl)2 of 2 to 16 carbon atoms or s-triazinyl substituted twice by —N(alkyl)T1 with alkyl of 1 to 8 carbon atoms;
L is straight or branched chain alkylene of 1 to 18 carbon atoms, cycloalkylene of 5 to 8 carbon atoms, cycloalkenylene of 5 to 8 carbon atoms, alkenylene of 3 to 18 carbon atoms, a straight or branched chain alkylene of 1 to 4 carbon atoms substituted by phenyl or by phenyl substituted by one or two alkyl of 1 to 4 carbon atoms,
in formulas (16) to (28), R1, R2, R7, R8, R9, R10, R13, R14, d,h, k, m, q, and T1 have the same meanings as in formulas (1) to (15);
R19 is hydrogen, alkyl of 1 to 18 carbon atoms, alkenyl of 2 to 18 carbon atoms, glycidyl, 2,3-dihydroxypropyl, 2-hydroxy or 2-(hydroxymethyl) substituted alkyl of 3 to 12 carbon atoms which alkyl is interrupted by oxygen, an acyl radical of an aliphatic or unsaturated aliphatic carboxylic or carbamic acid containing 2 to 18 carbon atoms, an acyl radical of a cycloaliphatic carboxylic or carbamic acid containing 7 to 12 carbon atoms, or acyl radical of an aromatic acid containing 7 to 15 carbon atoms;
R20 is alkylene of 2 to 18 carbon atoms, a divalent acyl radical of an aliphatic or unsaturated aliphatic dicarboxylic or dicarbamic acid containing 2 to 18 carbon atoms, a divalent acyl radical of a cycloaliphatic dicarboxylic or dicarbamic acid containing 7 to 12 carbon atoms, or a divalent acyl radical of an aromatic dicarboxylic acid containing 8 to 15 carbon atoms;
R21 is hydrogen, alkyl of 1 to 18 carbon atoms or acyl of 2 to 6 carbon atoms;
R22 is hydrogen, alkyl of 1 to 18 carbon atoms, an acyl radical of an aliphatic or unsaturated aliphatic carboxylic or carbamic acid containing 2 to 18 carbon atoms, an acyl radical of a cycloaliphatic carboxylic or carbamic acid containing 7 to 12 carbon atoms, an acyl radical of an aromatic carboxylic acid containing 7 to 15 carbon atoms, or R4 and R5 together are —(CH2)5CO—, phthaloyl or a divalent acyl radical of maleic acid;
R23 is hydrogen, alkyl of 1 to 4 carbon atoms or acyl of 2 to 6 carbon atoms;
R24 is alkylene of 2 to 18 carbon atoms, a divalent acyl radical of an aliphatic or unsaturated aliphatic dicarboxylic or dicarbamic acid containing 2 to 18 carbon atoms, a divalent acyl radical of a cycloaliphatic dicarboxylic or dicarbamic acid containing 7 to 12 carbon atoms, or a divalent acyl radical of an aromatic dicarboxylic acid containing 8 to 15 carbon atoms;
R25 is alkoxy of 1 to 18 carbon atoms, alkenyloxy of 2 to 18 carbon atoms, —NHalkyl of 1 to 18 carbon atoms or —N(alkyl)2 of 2 to 36 carbon atoms,
R26 is alkylenedioxy of 2 to 18 carbon atoms, alkenylenedioxy of 2 to 18 carbon atoms, —NH-alkylene-NH— of 2 to 18 carbon atoms or —N(alkyl)-alkylene-N(alkyl)— of 3 to 18 carbon atoms,
in formulas (29) and (30), G is a carbon centered diradical derived from a primary, secondary or tertiary alcohol G—OH, where
z is as defined above, and
G is straight or branched chain alkylene of 1 to 18 carbon atoms, cycloalkylene of 5 to 8 carbon atoms, cycloalkenylene of 5 to 8 carbon atoms, alkenylene of 3 to 18 carbon atoms, a straight or branched chain alkylene of 1 to 4 carbon atoms substituted by phenyl or by phenyl substituted by one or two alkyl of 1 to 4 carbon atoms, with the proviso that in formula (29) successive hindered amine moieties can be oriented in either a head to head or head to tail fashion;
T4 is hydrogen or 15
R27 is a straight or branched chain alkylene of 1 to 18 carbon atoms, cycloalkylene or cycloalkenylene of 5 to 8 carbon atoms, phenylene or —NH-alkylene-NH— of 2 to 18 carbon atoms including 5-amino-1-aminomethyl-1,3,3-trimethylcyclohexane and —NH-xylylene-NH—;
16
R28 is alkyl of 1 to 4 carbon atoms;
R29 is a straight or branched chain alkyl or —NH-alkyl of 1 to 18 carbon atoms or —NH— cycloalkyl of 5 to 8 carbon atoms;
and
with the further proviso that in formulas (1) and (2), when b is 1, E is not methyl, ethyl, 2-propyl or 2-methyl-2-propyl.

72 more elements

Hydroxy-substituted N-alkoxy hindered amines and compositions stabilized therewith

Life of this patent

Hydroxy-substituted N-alkoxy hindered amines and compositions stabilized therewith

Life of this patent

Abstract

Claims38