Branched acrylate functional oligomers
AssigneeArkema France
InventorsLing LI, Yuhong HE, Endrit SHURDHA
Life of this patent
Estimating the term…
Abstract
A curable oligomer is the reaction product of: x equivalents of at least one diepoxy a); y1 equivalents of at least one unsaturated carboxylic acid b); and y2 equivalents of at least one polycarboxylic acid c) comprising at least three carboxylic acid groups. x is defined as the number of moles of epoxy groups in component a), y1 is defined as the number of moles of carboxylic acid groups in component b), and y2 is defined as the number of moles of carboxylic acid groups in component c).
Claims19
A curable oligomer comprising the reaction product of:
- x equivalents of a component a) comprising at least one diepoxy;
- y1 equivalents of a component b) comprising at least one unsaturated carboxylic acid;
- and
- y2 equivalents of a component c) comprising at least one polycarboxylic acid bearing at least three carboxylic acid groups;
- wherein x is the number of moles of epoxy groups in component a), y1 is the number of moles of carboxylic acid groups in component b), and y2 is the number of moles of carboxylic acid groups in component c);
- and
- the ratio of x:(y1+y2) is from 1:1.1 to 1:0.90.
A method of preparing a curable oligomer, wherein the method comprises reacting a mixture comprising:
- x equivalents of a component a) comprising at least one diepoxy;
- y2 equivalents of a component c) comprising at least one polycarboxylic acid bearing at least three carboxylic acid groups;
- and
- optionally z1 equivalents of a component b) comprising at least one unsaturated carboxylic acid;
- to provide an epoxy-capped prepolymer;
- and then reacting the epoxy-capped prepolymer with z2 equivalents of a component b) comprising at least one unsaturated carboxylic acid;
- wherein z1+z2=y1,
- x is the number of moles of epoxy groups in component a), y1 is the number of moles of carboxylic acid groups in component b), and y2 is the number of moles of carboxylic acid groups in component c).
A method of preparing a curable oligomer, wherein the method comprises reacting a mixture comprising:
- x equivalents of a component a) comprising at least one diepoxy;
- y1 equivalents of a component b) comprising at least one unsaturated carboxylic acid;
- and
- y2 equivalents of a component c) comprising at least one polycarboxylic acid bearing at least three carboxylic acid groups,
- to provide a curable oligomer;
- wherein x is the number of moles of epoxy groups in component a), y1 is the number of moles of carboxylic acid groups in component b), and y2 is the number of moles of carboxylic acid groups in component c), the ratio of x:(y1+y2) is from 1:1.1 to 1:0.90.
The method of claim, wherein the ratio of y2:x is at most 1:4.
Dependencies are inferred from the claim text.