Quadratic acid amide derivatives, their use as stabilizers, and synthetic resins treated therewith
AssigneeChemische Werke Huels Aktiengesellschaft
InventorsKonrad Rombusch, Gunther Maahs, Wolfgang Schafer
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Abstract
Quadratic acid bisamides and salts thereof having the formula I are effective stabilizers of synthetic resins, especially for imparting resistance to deterioration resulting from exposure to light ##STR1## wherein R.sub.1 is H, C.sub.1-12 alkyl or OH-substituted C.sub.2-12 alkyl; R.sub.2 is --(CH.sub.2).sub.m --O--.sub.n, wherein m is an integer of 2-6; n is 0 or 1; R.sub.3 is H, CH.sub.3, CH.sub.2 --CH.sub.2 --OH, CH.sub.2 --COOH or CH.sub.2 --CH.sub.2 --COOH; HX is an acid equivalent of an unsubstituted or substituted monobasic, dibasic or polybasic organic acid of not more than 20 carbon atoms, or of sulfuric or phosphoric acid; and 0.ltoreq.p.ltoreq.2.
Claims20
A quadratic acid bisamide or salt thereof having the formula ##STR5## wherein R.sub.1 is H, C.sub.1-12 alkyl or OH-substituted C.sub.2-12 alkyl;
- R.sub.2 is --(CH.sub.2).sub.m --O--.sub.n, wherein m is an integer of 2-6;
- n is 0 or 1;
- R.sub.3 is H, CH.sub.3, CH.sub.2 --CH.sub.2 --OH, CH.sub.2 --COOH or CH.sub.2 --CH.sub.2 --COOH;
- HX is an acid equivalent of an unsubstituted or substituted monobasic, dibasic or polybasic organic acid of not more than 20 carbon atoms, or of sulfuric or phosphoric acid;
- and
- .ltoreq. p.ltoreq.2.
In a synthetic resin comprising an effective stabilizing amount of a stabilizer for imparting resistance to weathering, especially deterioration resulting from exposure to light, the improvement wherein said stabilizer is a quadratic acid bisamide or salt thereof having the formula ##STR6## wherein R.sub.1 is H, C.sub.1-12 alkyl or OH-substituted C.sub.2-12 alkyl;
- R.sub.2 is --(CH.sub.2).sub.m --O--.sub.n, wherein m is an integer of 2-6;
- n is 0 or 1;
- R.sub.3 is H, CH.sub.3, CH.sub.2 --CH.sub.2 --OH, CH.sub.2 --COOH or CH.sub.2 --CH.sub.2 --COOH;
- HX is an acid equivalent of an unsubstituted or substituted monobasic, dibasic or polybasic organic acid of not more than 20 carbon atoms, or of sulfuric or phosphoric acid;
- and
- .ltoreq. p.ltoreq.2.
In a method of stabilizing a synthetic resin for imparting resistance to weathering, especially deterioration resulting from exposure to light, wherein an effective stabilizing amount of a stabilizer is incorporated in said resin, the improvement wherein said stabilizer is a quadratic acid bisamide or salt thereof having the formula ##STR7## wherein R.sub.1 is H, C.sub.1-12 alkyl or OH-substituted C.sub.2-12 alkyl;
- R.sub.2 is --(CH.sub.2).sub.m --O--.sub.n, wherein m is an integer of 2-6;
- n is 0 or 1;
- R.sub.3 is H, CH.sub.3, CH.sub.2 --CH.sub.2 --OH, CH.sub.2 --COOH or CH.sub.2 --CH.sub.2 --COOH;
- HX is an acid equivalent of an unsubstituted or substituted monobasic, dibasic or polybasic organic acid of not more than 20 carbon atoms, or of sulfuric or phosphoric acid;
- and
- .ltoreq. p.ltoreq.2.
Dependencies are inferred from the claim text.