Claims
- 1. A compound of the formula (I) ##STR52## in which A is one of the groups of the formulae (IIc) and (IId) ##STR53## in which R.sub.4 is hydrogen, C.sub.1 -C.sub.8 alkyl, O., OH, NO, CH.sub.2 CN, C.sub.1 -C.sub.18 alkoxy, C.sub.5 -C.sub.12 cycloalkoxy, C.sub.3 -C.sub.6 alkenyl, C.sub.7 -C.sub.9 phenylalkyl which is unsubstituted or mono-, di- or tri-substituted on the phenyl by C.sub.1 -C.sub.4 alkyl; or C.sub.1 -C.sub.8 acyl;
- R.sub.8 is hydrogen or methyl;
- R.sub.9 is a direct bond, C.sub.1 -C.sub.18 alkanediyl or a group --X.sub.7 --R.sub.13 -- where X.sub.7 is --O-- or >N--R.sub.14 with R.sub.14 being C.sub.1 -C.sub.8 acyl or (C.sub.1 -C.sub.8 alkoxy)-carbonyl and R.sub.13 is C.sub.3 -C.sub.12 alkanediyl;
- R.sub.10 is hydrogen or methyl;
- R.sub.11 is --CH.sub.2 -- or --CH.sub.2 CH.sub.2 --;
- R.sub.1 is C.sub.1 -C.sub.8 alkyl, phenyl, C.sub.1 -C.sub.8 alkoxy or OH;
- R.sub.2 and R.sub.3 which are identical or different are C.sub.1 -C.sub.8 alkyl or phenyl, or R.sub.2 is also hydrogen;
- m+n is a number from 1 to 100;
- n varies from zero to 90% of the sum of m+n;
- X.sub.1 is as defined for R.sub.1 or is a group (R.sub.15).sub.3 SiO-- with R.sub.15 being C.sub.1 -C.sub.8 alkyl or phenyl;
- X.sub.2 is hydrogen, C.sub.1 -C.sub.8 alkyl, a group (R.sub.15).sub.3 Si-- or, when R.sub.1 and X.sub.1 are C.sub.1 -C.sub.8 alkyl or phenyl, X.sub.2 is additionally a group ##STR54## and, when m+n is a number from 3 to 10, X.sub.1 and X.sub.2 together also form a direct bond;
- each of the groups R.sub.1, R.sub.2, R.sub.3 and A have the same definition or different definitions in the recurring structural units contained in formula (I) and, when the compounds of the formula (I) are copolymeric, they have a random distribution or a block distribution of the individual structural units.
- 2. A compound of the formula (I) according to claim 1, in which A is one of the groups of the formulae (IIc) and (IId) in which R.sub.8 is hydrogen or methyl;
- R.sub.9 is a direct bond, C.sub.1 -C.sub.12 alkanediyl or a group --X.sub.7 --R.sub.13 -- where X.sub.7 is --O-- or >N--R.sub.14 with R.sub.14 being C.sub.1 -C.sub.6 acyl or (C.sub.1 -C.sub.6 alkoxy)-carbonyl and R.sub.13 is C.sub.3 -C.sub.11 alkanediyl;
- R.sub.10 is hydrogen or methyl;
- R.sub.11 is --CH.sub.2 --;
- R.sub.1 is C.sub.1 -C.sub.6 alkyl, phenyl, C.sub.1 -C.sub.6 alkoxy or OH;
- R.sub.2 and R.sub.3 which are identical or different are C.sub.1 -C.sub.6 alkyl or phenyl or R.sub.2 is also hydrogen;
- m+n is a number from 1 to 80 and n varies from zero to 90% of the sum m+n;
- X.sub.1 is as defined for R.sub.1 or is a group (R.sub.15).sub.3 SiO-- with R.sub.15 being C.sub.1 -C.sub.6 alkyl;
- X.sub.2 is hydrogen, C.sub.1 -C.sub.6 alkyl, a group (R.sub.15).sub.3 Si-- or, when R.sub.1 and X.sub.1 are C.sub.1 -C.sub.6 alkyl or phenyl, X.sub.2 is additionally a group ##STR55## and, when m+n is a number from 3 to 10, X.sub.1 and X.sub.2 together also form a direct bond.
- 3. A compound of the formula (I) according to claim 1, in which A is one of the groups of the formulae (IIc) and (IId) in which R.sub.8 is hydrogen or methyl;
- R.sub.9 is a direct bond, C.sub.1 -C.sub.12 alkanediyl or a group --X.sub.7 --R.sub.13 -- where X.sub.7 is --O-- or >N--R.sub.14 with R.sub.14 being C.sub.1 -C.sub.4 acyl or (C.sub.1 -C.sub.4 alkoxy)-carbonyl and R.sub.13 is trimethylene;
- R.sub.10 is hydrogen or methyl;
- R.sub.11 is --CH.sub.2 --;
- R.sub.1 is C.sub.1 -C.sub.4 alkyl, phenyl, C.sub.1 -C.sub.4 alkoxy or OH;
- R.sub.2 and R.sub.3 which are identical or different are C.sub.1 -C.sub.4 alkyl or phenyl, or R.sub.2 is also hydrogen;
- m+n is a number from 1 to 60 and n varies from zero to 90% of the sum m+n;
- X.sub.1 is as defined for R.sub.1 or is a group (R.sub.15).sub.3 SiO-- with R.sub.15 being C.sub.1 -C.sub.4 alkyl;
- X.sub.2 is hydrogen, C.sub.1 -C.sub.4 alkyl, a group (R.sub.15).sub.3 Si-- or, when R.sub.1 and X.sub.1 are C.sub.1 -C.sub.4 alkyl or phenyl, X.sub.2 is additionally a group ##STR56## and, when m+n is a number from 3 to 10, X.sub.1 and X.sub.2 together also form a direct bond.
- 4. A compound of the formula (I) according to claim 1, in which A is a group of the formula (IIc); in which R.sub.4 is hydrogen or methyl;
- R.sub.8 is hydrogen or methyl;
- R.sub.9 is C.sub.1 -C.sub.12 alkanediyl;
- R.sub.1 is C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkoxy or OH;
- R.sub.2 and R.sub.3 are C.sub.1 -C.sub.3 alkyl or R.sub.2 is also hydrogen;
- m+n is a number from 1 to 50 and n varies from zero to 75% of the sum m+n;
- X.sub.1 is as defined for R.sub.1 or is a group (R.sub.15).sub.3 SiO-- with R.sub.15 being C.sub.1 -C.sub.3 alkyl;
- X.sub.2 is hydrogen, C.sub.1 -C.sub.3 alkyl, a group (R.sub.15).sub.3 Si-- or, when R.sub.1 and X.sub.1 are C.sub.1 -C.sub.3 alkyl, X.sub.2 is additionally a group ##STR57## and, when m+n is a number from 3 to 10, X.sub.1 and X.sub.2 together also form a direct bond.
- 5. A compound of the formula (I) according to claim 1, in which n is zero and the repeating structural unit of the formula ##STR58##
- 6. A compound of the formula (I) according to claim 1, in which R.sub.4 is hydrogen, C.sub.1 -C.sub.4 alkyl, OH, C.sub.6 -C.sub.12 alkoxy, C.sub.5 -C.sub.8 cycloalkoxy, allyl, benzyl or acetyl.
- 7. A composition comprising a synthetic polymer susceptible to degradation induced by light, heat and oxidation and an effective stabilizing amount of a compound of the formula (I) according to claim 1.
- 8. A composition according to claim 7, in which the synthetic polymer is a polyolefin.
- 9. A composition according to claim 7, in which the synthetic polymer is polyethylene or polypropylene.
- 10. A method for stabilizing a synthetic polymer against degradation induced by light, heat and oxidation, which comprises incorporating into said synthetic polymer an effective stabilizing amount of a compound of the formula (I) according to claim 1.
Priority Claims (1)
Number |
Date |
Country |
Kind |
22402A90 |
Dec 1990 |
ITX |
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Parent Case Info
This is a divisional of Ser. No. 08/019,520, filed Feb. 19, 1993, now U.S. Pat. No. 5,321,066 which is a divisional of Ser. No. 07/805,429, filed Dec. 11, 1991, now U.S. Pat. No. 5,219,905 issued Jun. 15, 1993.
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Date |
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4177186 |
Rody et al. |
Aug 1989 |
|
4859759 |
Maycock et al. |
Aug 1989 |
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Entry |
Derwent Abst. 86-205176/32 & Chem Abst. 106, 5979t (1987). |
Derwent Abst. 86-205177/32 & Chem. Abst. 106, 19478R (1987). |
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Divisions (2)
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Number |
Date |
Country |
Parent |
19520 |
Feb 1993 |
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Parent |
805429 |
Dec 1991 |
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