Curing composition
AssigneeEvonik Operations GmbH
InventorsLiyin Zhou, Qiubai Peng
Life of this patent
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Abstract
The present disclosure relates to a curing composition comprising: a) a condensation product of at least one carboxylic acid having 20-60 carbon atoms and at least two carboxyl groups and/or at least one ester derived from a carboxylic acid having 20-60 carbon atoms and at least two carboxyl groups; and at least one polyoxyalkyleneamine, wherein the polyoxyalkyleneamine includes: I) at least two oxyalkylene moieties; and II) at least two primary amino groups; and b) at least one amine having at least one amino group. Also provided are an adhesive composition comprising the curing composition, usage of the adhesive, a turbine blade for wind energy comprising the adhesive composition, and a method for manufacturing the curing composition.
Claims20
A curing composition, consisting of:
- a) a condensation product of:
- at least one carboxylic acid having 20-60 carbon atoms and at least two carboxyl groups and/or at least one ester derived from a carboxylic acid having 20-60 carbon atoms and at least two carboxyl groups;
- and
- at least one polyoxyalkyleneamine, wherein the polyoxyalkyleneamine includes:
- I) at least two oxyalkylene moieties;
- and
- II) at least two primary amino groups,
- wherein the carboxylic acid and polyoxyalkyleneamine are within a mole ratio of 0.01-0.8:1;
- and
- b) at least one amine having at least one primary amino group.
A method for manufacturing a curing composition, comprising:
- 1) heating
- a) at least one carboxylic acid having 20-60 carbon atoms and at least two carboxyl groups and/or at least one ester derived from a carboxylic acid having 20-60 carbon atoms and at least two carboxyl groups;
- and
- b) at least one polyoxyalkyleneamine, wherein the polyoxyalkyleneamine includes at least one oxyalkylene moiety and at least two primary amino groups to a temperature of 120° C. to 280° C. for 0.5 to 10 hours, wherein the carboxylic acid and polyoxyalkyleneamine are within a mole ratio of 0.1-0.4;
- and
- 2) mixing the condensation product with at least one amine having at least one primary amino group.
Dependencies are inferred from the claim text.