Epoxy resin composition
AssigneeHuntsman International LLC
InventorsChristiaan Debien, Christian Esbelin, Hans Godelieve Verbeke, Hugo Verbeke
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Abstract
Curable composition obtained by combining and mixing an epoxy resin composition comprising an epoxy resin, a monool and/or polyol and a compound comprising a carboxamide group, and a polyisocyanate composition comprising a polyisocyanate, a lithium halide and a urea compound, wherein the number of moles of lithium halide per isocyanate equivalent ranges of from 0.0001-0.04 and the number of urea+biuret equivalents per isocyanate equivalent of from 0.0001-0.4. The epoxy resin composition is claimed as well.
Claims20
A method for increasing pot-life of a curable composition comprising combining:
- a) a polyisocyanate composition comprising a polyisocyanate, a lithium halide and a urea compound having an average molecular weight of 500 to 15000 and comprising biuret groups;
- and
- b) an epoxy resin composition comprising an epoxy resin, a monool and/or a polyol and a compound having a structure NH2—CO—R to form the curable composition
- wherein R is selected from hydrogen, a C1-C20 hydrocarbyl group, NH2, NR1R2, C6H5 and
- where R1 and R2 are each independently OH or a C1-C10 hydrocarbyl optionally comprising 1-3 hydroxy and/or ether groups
- wherein the curable composition has a number of hydroxy equivalents per epoxy equivalent of 0.02 to 100, a number of carboxamide equivalents per epoxy equivalent of 0.0005 to 1, a number of urea and biuret equivalents per isocyanate equivalent ranging from 0.0001 to 0.4 and a number of epoxy equivalents per isocyanate equivalent ranging from 0.003 to 1.
A curable composition for making a polyisocyanurate material, the curable composition comprising:
- a polyisocyanate composition comprising a polyisocyanate, a urea compound having an average molecular weight of 500 to 15000 and comprising biuret groups and a lithium halide;
- and an epoxy resin composition comprising an epoxy resin, at least one of a monool and a polyol and a compound having a structure NH2—CO—R
- wherein R is selected from hydrogen, a C1-C20 hydrocarbyl group, NH2, NR1R2, C6H5 and
- where R1 and R2 are each independently OH or a C1-C10 hydrocarbyl optionally comprising 1-3 hydroxy and/or ether groups
- wherein the curable composition exhibits an increased pot-life as compared to a pot-life of the curable composition in the absence of the carboxamide compound.
A curable composition for making a polyisocyanurate material, the curable composition comprising:
- a polyisocyanate composition comprising a polyisocyanate, a urea compound having an average molecular weight of 500 to 15000 and comprising biuret groups and a lithium halide;
- and an epoxy resin composition comprising an epoxy resin, at least one of a monool and a polyol and a compound having a structure NH2—CO—R
- wherein R is selected from hydrogen, a C1-C20 hydrocarbyl group, NH2, NR1R2, C6H5 and
- where R1 and R2 are each independently OH or a C1-C10 hydrocarbyl optionally comprising 1-3 hydroxy and/or ether groups
- wherein the curable composition exhibits a pot-life of at least 5 hours up to 300 hours.
Dependencies are inferred from the claim text.