EPOXY COATING POWDERS WITH WRINKLE FINISHES

    公开(公告)号:CA1161183A

    公开(公告)日:1984-01-24

    申请号:CA396725

    申请日:1982-02-22

    Applicant: POLYMER CORP

    Abstract: 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% polyalkylacrylate 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.degree.C to 200.degree.C for from 20 to 10 minutes. Compositions capable of producing the wrinkle pattern are characterized by a gel time at 205.degree.C in the range of from about 30 to 70 seconds and exhibit inclined plate flow at 150.degree.C of from about 50 mm to 80 mm.

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