Epoxide resins containing phenol groups, their manufacture and their use
AssigneeHoechst Aktiengesellschaft
InventorsNorbert Mayer, Gerhard Pfahler, Franz Scheidl
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Abstract
The present invention relates to epoxide resins containing phenol groups and to homo-oligomers thereof of the structure ##STR1## that are obtained by reacting phenolcarboxylic acids with one epoxide equivalent of a polyepoxide. The new compounds are difficultly volatile and resistant to migration and can be used as stabilizers in synthetic polymers, in particular in poly-.alpha.-olefins.
Claims4
Epoxide derived compounds containing phenol groups and homo-oligomers thereof of the general formula (I) ##STR43## in which R is C.sub.1 to C.sub.4 alkyl, R' and R" independently of one another denote H or C.sub.1 to C.sub.4 alkyl, n is 1 or 2 and A is a chemical bond or (.alpha.) the radical of a straight-chain or branched, unsubstituted or phenyl-substituted alkane having 1 to 20 C atoms, or (.beta.) the radical of a cycloaliphatic alkane which has 5 to 12 C atoms and is unsubstituted or substituted by C.sub.1 to C.sub.5 alkyl, or (.gamma.) a phenyl or naphthyl radical unsubstituted or substituted by C.sub.1 to C.sub.12 alkyl, E represents a CH.sub.2 group, G represents a H atom or a CH.sub.3 group and L represents a H atom, or E and L conjointly with the C atoms linking them, form a cycloalkyl radical which has 5 to 12 C atoms and which can also be alkyl-substituted, and D is oxygen or a radical of the formula ##STR44## and m denotes 1, 2 or 3 and p denotes 0, 1 or 2, with the limitation that p+m is not greater than 3.
Dependencies are inferred from the claim text.