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US 8,524,857 B2Granted
Diamino-alcohol compounds, their manufacture and use in epoxy resins
AssigneesDow Global Technologies LLC, Angus Chemical Company
InventorsAsghar Akber Peera, Ian Tomlinson
Life of this patent
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Abstract
A new class of compounds, namely diamino alcohols, is described, along with a process for their production and their use as hardeners, or curing agents, for epoxy resin systems, some of which have high glass transition temperatures, Tgs, such as greater than about 120° C.
Claims12
A cured product of a curable resin system, wherein the curable resin system comprises:
- (a) 35 to 90% by weight of at least one epoxy resin;
- and
- (b) 0.1 to 35% by weight of a diamino alcohol compound having the formula:
- wherein R is independently hydrogen, alkyl, or aryl;
- R1 is independently hydrogen, or alkyl;
- alternatively, R and R1 may be linked together to form a cycloalkyl;
- R2 is independently hydrogen, alkyl, or aryl;
- R3 is independently hydrogen, alkyl, or aryl;
- R4 is independently hydrogen, or alkyl;
- and alternatively, R3 and R4 may be linked together to form a cycloalkyl;
- wherein all weight percents are based on the total weight of the curable resin system.
8 more elements
A method for preparing a curable resin system comprising admixing:
- (a) 35 to 65% by weight of at least one epoxy resin;
- and
- (b) 0.1 to 35% by weight of a diamino alcohol compound having the formula:
- wherein R is independently hydrogen, alkyl, or aryl;
- R1 is independently hydrogen, or alkyl;
- alternatively, R and R1 may be linked together to form a cycloalkyl;
- R2 is independently hydrogen, alkyl, or aryl;
- R3 is independently hydrogen, alkyl, or aryl;
- R4 is independently hydrogen, or alkyl;
- and alternatively, R3 and R4 may be linked together to form a cycloalkyl;
- wherein all weight percents are based on the total weight of the curable resin system.
8 more elements
Dependencies are inferred from the claim text.