Ammonium salts of .alpha.-ketocarboxylic acids
First Claim
Patent Images
1. Ammonium salts of α
- -ketocarboxylic acids corresponding to the following general formula;
##STR7## wherein n represents an integer of from about 1 to 4A and B are the same or different and represent hydrogen, an optionally branched and/or halogen- or methoxy-substituted C1 -C10 -alkyl radical, a C5 -C15 -cycloalkyl radical, a C6 -C15 -aryl radical which may optionally be substituted by --OH, --R, --OR, --SR, halogen, --NO2, --COR, --COOH, --CN, --COOR, --CONH2, --OR'"'"', --SR'"'"' or --COR'"'"', a C4 -C10 -heterocyclic radical containing oxygen, sulphur and/or nitrogen as a hetero atom or A and B together represent a 5-membered or 6-membered cycloaliphatic ring optionally containing oxygen or nitrogen as a hetero atom, andD represents hydrogen, halogen, --OH, --COOH, --COOR, CN, --COOH, --OR, --COR, --COR'"'"', --CCl3, an optionally branched C1 -C10 -alkyl radical, a C4 -C15 -cycloalkyl radical, a C6 -C15 -aryl radical which may optionally be substituted by --OH, --R, --OR, --SR, halogen, --NO2, --COR, --COOH, --CN, --COOR, --CONH2, --OR'"'"', --SR'"'"', or --COR'"'"' or a C4 -C10 -heterocyclic radical containing oxygen and/or nitrogen as a hetero atom,whereinR represents an optionally halogen-substituted alkyl group containing from about 1 to 6 carbon atoms andR'"'"' represents an aryl group containing from about 6 to 12 carbon atoms.
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Abstract
This invention relates to new ammonium salts of α-ketocarboxylic acids, to their use for the production of amines in situ by photochemical decomposition and to photochemically hardenable coating compositions containing these ammonium salts.
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Citations
12 Claims
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1. Ammonium salts of α
- -ketocarboxylic acids corresponding to the following general formula;
##STR7## wherein n represents an integer of from about 1 to 4A and B are the same or different and represent hydrogen, an optionally branched and/or halogen- or methoxy-substituted C1 -C10 -alkyl radical, a C5 -C15 -cycloalkyl radical, a C6 -C15 -aryl radical which may optionally be substituted by --OH, --R, --OR, --SR, halogen, --NO2, --COR, --COOH, --CN, --COOR, --CONH2, --OR'"'"', --SR'"'"' or --COR'"'"', a C4 -C10 -heterocyclic radical containing oxygen, sulphur and/or nitrogen as a hetero atom or A and B together represent a 5-membered or 6-membered cycloaliphatic ring optionally containing oxygen or nitrogen as a hetero atom, and D represents hydrogen, halogen, --OH, --COOH, --COOR, CN, --COOH, --OR, --COR, --COR'"'"', --CCl3, an optionally branched C1 -C10 -alkyl radical, a C4 -C15 -cycloalkyl radical, a C6 -C15 -aryl radical which may optionally be substituted by --OH, --R, --OR, --SR, halogen, --NO2, --COR, --COOH, --CN, --COOR, --CONH2, --OR'"'"', --SR'"'"', or --COR'"'"' or a C4 -C10 -heterocyclic radical containing oxygen and/or nitrogen as a hetero atom, wherein R represents an optionally halogen-substituted alkyl group containing from about 1 to 6 carbon atoms and R'"'"' represents an aryl group containing from about 6 to 12 carbon atoms. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- -ketocarboxylic acids corresponding to the following general formula;
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11. A process for producing ammonium salts of α
- -ketocarboxylic acids corresponding to the following general formula;
##STR8## wherein n represents an integer of from about 1 to 4,A and B are the same or different and represent hydrogen, an optionally branched and/or halogen- or methoxy-substituted C1 -C10 -alkyl radical, a C5 -C15 -cycloalkyl radical, a C6 -C15 -aryl radical which may optionally be substituted by --OH, --R, --OR, --SR, halogen, --NO2, --COR, --COOH, --CN, COOR, --CONH2, --OR'"'"', --SR'"'"' or --COR'"'"', a C4 -C10 -heterocyclic radical containing oxygen, sulphur and/or nitrogen as a hetero atom or A and B together represent a 5-membered or 6-membered cycloaliphatic ring optionally containing oxygen or nitrogen as a hetero atom, and D represents hydrogen, halogen, --OH, --COOH, --COOR, --CH, --COOH, --OR, --COR, --COR'"'"', --CCL3, an optionally branched C1 -C10 -alkyl radical, a C4 -C15 -cycloalkyl radical, a C6 -C15 -aryl radical which may optionally be substituted by --OH, --R, --OR, --SR, halogen, --NO2, --COR, --COOH, --CN, --COOR, --CONH2, OR'"'"', --SR'"'"', or --COR'"'"' or a C4 -C10 -heterocyclic radical containing oxygen and/or nitrogen as a hetero atom, wherein R represents an optionally halogen-substituted alkyl group containing from about 1 to 6 carbon atoms and R'"'"' represents an aryl group containing from about 6 to 12 carbon atoms comprising reacting α
-ketocarboxylic acids of the formula I with an amine component having a molecular weight between about 31 to 500 at temperatures in the range of from about -20°
to +50°
C.
- -ketocarboxylic acids corresponding to the following general formula;
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12. In a process for coating substrates with coating compositions based on polyurethane or epoxide precursors which harden in the presence of amines, the improvement wherein said compositions contain from about 0.1 to 40% by weight, based on the solids content, of ammonium salts of α
- -ketocarboxylic acids corresponding to the following general formula;
##STR9## wherein n represents an integer of from about 1 to 4,A and B are the same or different and represent hydrogen, an optionally branched and/or halogen- or methoxy-substituted C1-C10 -alkyl radical, a C5 -C15 -cycloalkyl radical a C6 -C15- aryl radical which may optionally be substituted by --OH, --R, --OR, --SR, halogen, --NO2, --COR, --COOH, --CN, COOR, --CONH2, --OR'"'"', --SR'"'"' or --COR'"'"', a C4 -C10 -heterocyclic radical containing oxygen, sulphur and/or nitrogen as a hetero atom or A and B together represent a 5-membered or 6 membered cycloaliphatic ring optionally containing oxygen or nitrogen as a hetero atom, and D represents hydrogen, halogen, --OH, --COOH, --COOR, --CH, --COOH, --OR, --COR, --COR'"'"', --CCl3, an optionally branched C1 -C10 -alkyl radical, a C4 --C15 -cycloalkyl radical, a C6 -C15 -aryl radical which may optionally be substituted by --OH, --R, --OR, --SR, halogen, --NO2, --COR, --COOH, --CN, --COOR, --CONH2, --OR'"'"', --SR'"'"', or --COR'"'"' or a C4 -C10 -heterocyclic radical containing oxygen and/or nitrogen as a hetero atom, wherein R represents an optionally halogen-substituted alkyl group containing from about 1 to 6 carbon atoms and R'"'"' represents an aryl group containing from about 6 to 12 carbon atoms and said composition is irradiated with light having a wavelength of from about 250 to 500 nm.
- -ketocarboxylic acids corresponding to the following general formula;
Specification