| 摘要 |
A low viscosity, diprimary amine-terminated reactive liquid polymer with low residual amine content, comprising the reaction product of a diprimary amine having the following formula H2N-R-NH2 wherein -NH2 is a primary terminal amine group; and wherein R is (1) a C4-C12 aliphatic chain having alkyl branches containing 2 to 4 carbons, wherein the positions of said alkyl branches within the C4-C12 aliphatic chain are such that they impart relatively different rates of reactivity to the terminal primary amine groups; or (2) a carbon to carbon backbone containing at least one non-reactive heteroatom, comprising (a) a C2-C20 aliphatic or cycloaliphatic moiety containing at least one tertiary amine; or (b) a polyoxyalkylene wherein the alkyl portion of said polyoxyalkylene contains 2 to 4 carbon atoms; and a functional-terminated reactive liquid polymer useful as an epoxy resin modifier employed with a curing agent.
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