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US 2009/0098072 A1Published application
Antioxidants
OwnerThomas Rudolph, Herwig Buchholzinventors
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Abstract
The invention relates to the use of compounds of formula (X—Ar—Y), in which X and Y respectively are selected independently of one another from the groups H, C-1-8 alkyl and groups as per formulae (Ia), (Ib) or (Ic), together with other groups that are defined as cited in the description, as antioxidants. The invention also relates to corresponding novel compounds and preparations and to corresponding production methods for said compounds and preparations.
Claims23
A method of achieving an antioxidant effect comprising contacting with a compound of the formula I
- X—Ar—Y I
- where Ar stands for an unsubstituted or mono- or polysubstituted aromatic ring or condensed ring system having 6 to 18 C atoms, at least one ring of which has aromatic character, in which, in addition, one or two CH groups per ring may be replaced by C═O, N, O or S and in a condensed ring system, in addition, one or two CH2 groups may be replaced by C═O or C═CH2,
- X and Y are each selected, independently of one another, from the radicals H, C1-8-alkyl and the radicals of the formulae Ia, Ib or Ic
- with the proviso that at least one radical from X and Y does not stand for H or C1-8-alkyl, and R1 is selected from
- H,
- straight-chain or branched C1- to C20-alkoxy groups, where the alkyl chains may each also be interrupted by oxygen or nitrogen,
- straight-chain or branched C1- to C20-alkyl groups, where the alkyl chains may each also be interrupted by oxygen or nitrogen,
- straight-chain or branched C3- to C20-alkenyl groups,
- straight-chain or branched C1- to C20-hydroxyalkyl groups, where the hydroxyl group may be bonded to a primary or secondary carbon atom of the chain and furthermore the alkyl chains may each also be interrupted by oxygen or nitrogen,
- straight-chain or branched C1- to C20-hydroxyalkoxy groups, where the hydroxyl group(s) may be bonded to primary or secondary carbon atoms of the chain and furthermore the alkyl chain may also be interrupted by oxygen,
- straight-chain or branched C1- to C20-alkyl groups in which the alkyl chain is functionalised by means of at least one sulfate, sulfonate, phosphonate or phosphate group or
- R1 stands for a carboxylic, phosphoric or sulfuric acid function, which may optionally be esterified by means of straight-chain or branched C1- to C20-alkyl groups or straight-chain or branched C3- to C20-alkenyl groups,
- or salts of the compounds of the formula I.
10 more elements
Compounds of the formula I
- X—Ar—Y I
- where Ar stands for an unsubstituted or mono- or polysubstituted aromatic ring or condensed ring system having 6 to 18 C atoms, at least one ring of which has aromatic character, in which, in addition, one or two CH groups per ring may be replaced by C═O, N, O or S and in a condensed ring system, in addition, one or two CH2 groups may be replaced by C═O or C═CH2,
- X and Y are each selected, independently of one another, from the radicals H, C1-8-alkyl and the radicals of the formulae Ia, Ib or Ic
- with the proviso that at least one radical from X and Y does not stand for H or C1-8-alkyl, and R1 is selected from
- H,
- straight-chain or branched C1- to C20-alkoxy groups, where the alkyl chains may each also be interrupted by oxygen or nitrogen,
- straight-chain or branched C1- to C20-alkyl groups, where the alkyl chains may each also be interrupted by oxygen or nitrogen,
- straight-chain or branched C3- to C20-alkenyl groups,
- straight-chain or branched C1- to C20-hydroxyalkyl groups, where the hydroxyl group may be bonded to a primary or secondary carbon atom of the chain and furthermore the alkyl chains may each also be interrupted by oxygen or nitrogen,
- straight-chain or branched C1- to C20-hydroxyalkoxy groups, where the hydroxyl group(s) may be bonded to primary or secondary carbon atoms of the chain and furthermore the alkyl chain may also be interrupted by oxygen,
- straight-chain or branched C1- to C20-alkyl groups in which the alkyl chain is functionalised by means of at least one sulfate, sulfonate, phosphonate or phosphate group or
- R1 stands for a carboxylic, phosphoric or sulfuric acid function, which may optionally be esterified by means of straight-chain or branched C1- to C20-alkyl groups or straight-chain or branched C3- to C20-alkenyl groups, or salts of the compounds of the formula I but where the compounds
- 1,7,7-trimethyl-3-(4-methylbenzyl)bicyclo[2.2.1]heptan-2-one and
- 1,7,7-trimethyl-3-(4-methylbenzylidene)bicyclo[2.2.1]heptan-2-ol
- are excepted.
12 more elements
Dependencies are inferred from the claim text.