C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
117/198, 400/470
C09D 3/58 (1980.01)
Patent
CA 1161183
ABSTRACT OF THE DISCLOSURE An epoxy coating powder for application by fusion coating processes produces a coating of low gloss and randomly developed wrinkle surface patterning. A typical formulation comprises a major weight proportion of epoxy resin type 3 of which about 15% comprises such resin compounded with 5% poly- alkylacrylate flow promoter, about 18% of the total weight of the resin being methylene disalicylic acid, and from about 42% to 53% of resin weight being filler. A BCl3 amine catalyst is incorporated and the materials are melt-mixed, extruded to pellets, and the pellets ground to pass 60 mesh screen. Cure of the applied coating is effected at about 150°C to 200°C for from 20 to 10 minutes. Compositions capable of producing the wrinkle pattern are characterized by a gel time at 205°C in the range of from about 30 to 70 seconds and exhibit inclined plate flow at 150°C of from about 50 mm to 80 mm.
396725
Noonan Charles M.
Schreffler Dean A.
Filipkowski R.j.
Polymer Corporation (the)
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