Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1998-06-10
2000-10-03
Sellers, Robert E. L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523404, 523417, 523420, 525504, 525533, 525423, C08G 5914, C08G 5944, C08G 5950, C08K 320, C08L 6302
Patent
active
061274593
ABSTRACT:
A water-compatible curing agent for epoxy resins is prepared by (a) reacting at least one polyamine having at least 3 active amine hydrogen atoms per molecule and at least one epoxy resin in an epoxy equivalent to polyamine mole ratio of from 0.9:1 to 1:10 to obtain an amine-terminated intermediate; (b) reacting the amine-terminated intermediate with from 0.5 to 25 weight percent, based on the amine-terminated intermediate, of an acid-terminated polyalkylene glycol to yield an amine-terminated curing agent. The amine-terminated intermediate can be capped with a monoepoxide in an amine hydrogen atoms to epoxy groups ratio of from about 1.5:1 to 30:1 prior to reaction with the acid-terminated polyalkylene glycol, or the amine-terminated curing agent produced following step (b) can be capped with a monoepoxide.
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Back Gayle Edward
Dangayach Kailash
Elmore Jimmy D.
Ghosh Kalyan
Stark, deceased Charles J.
Iwata Yukiko
Sellers Robert E. L.
Shell Oil Company
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