One-part hot-sprayable epoxy resin systems and methods

Details One-part hot-sprayable epoxy resin systems and methods One-part hot-sprayable epoxy resin systems and methods

1987-08-10

1988-06-14

Jacobs, Lewis T.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

427386, 428413, 523457, 523467, B05D 302, B32B 300, C08K 336, C08K 334

Patent

active

047511290

ABSTRACT:
A one-part composition for application to a substrate, e.g., automotive metal body panels, to provide reinforcement thereto is a thixotropic admixture containing as essential components (a) a heat curable epoxy resin system including the reaction product in the presence of a catalyst of at least one epoxy resin with a carboxy terminated elastomer, (b) dicyandiamide, and (c) a plurality of inorganic particulate filler materials, at least one of which is capable of imparting thixotropic properties to the composition. The method of reinforcing the substrate involves spraying the one-part epoxy resin containing composition onto at least a portion thereof in a heated condition and thereafter curing the composition at a temperature higher than the spraying temperature. Resulting reinforced substrates have tenaciously adhered thereto on at least a portion of one surface thereof a thermoset layer formed by the hot spraying and then curing thereon of the thixotropic composition.

REFERENCES:
patent: 3738862 (1973-07-01), Klarquist et al.
patent: 3894113 (1975-07-01), Pagel
patent: 4025578 (1977-05-01), Siebert
patent: 4296656 (1981-11-01), Mendelsohn
patent: 4320047 (1982-03-01), Murphy et al.
patent: 4410596 (1983-10-01), Whiteside et al.
patent: 4444818 (1984-04-01), Tominaga et al.
patent: 4482660 (1984-11-01), Minamisawa et al.

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