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US 5,973,203 AGranted
Process for preparation of acrylic or methacrylic acid amides
AssigneeCoatex
InventorsJean-Bernard Egraz, Jean-Marc Suau, Maryvonne Brigodiot-Ignazi, Isabelle Peixoto, Thierry Lalot
Life of this patent
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Abstract
A process for preparing acrylic or methacrylic acid amides functionalized with a cationizable tertiary amine, by aminolysis of acrylic or methacrylic acid esters with the aid of enzymes.
Claims17
A process for preparing acrylic or methacrylic acid amides functionalized with cationizable tertiary amino groups, comprising:
- reacting an acrylic or methacrylic acid ester with a diamine in the presence of at least one polymerization inhibitor and at least one enzyme, to produce an acrylic or methacrylic acid amide, wherein
- the diamine has (1) an amino group capable of reacting with the ester group of the acrylic or methacrylic acid ester to form an amide group and (2) a cationizable tertiary amino group;
- and
- the active site of enzyme recognizes the ester group of the acrylic or methacrylic acid ester.
1 more element
A process for preparing an acrylic or methacrylic acid amide represented by formula (I):
- ##STR7## comprising:
- reacting an acrylic or methacrylic acid ester represented by the formula:
- ##STR8## with a diamine represented by the formula:
- ##STR9## in the presence of at least one polymerization inhibitor and a lipase which has an active site that recognizes the ester group of said acrylic or methacrylic acid ester, to produce said amide,
- wherein
- R.sub.1 is a hydrogen atom or a methyl radical;
- R' is a linear or branched alkyl radical;
- R.sub.2 is a linear or branched alkyl radical having 1 to 20 carbon atoms or an oxyalkylated radical containing 1 to 50 alkylene oxide radicals;
- and
- R.sub.3 and R.sub.4 are each, independently, a linear or branched alkyl radical having 1 to 18 carbon atoms.
7 more elements
Dependencies are inferred from the claim text.