C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 167/02 (2006.01) C09D 5/46 (2006.01)
Patent
CA 2140378
The invention relates to a coating system settable by heat on the basis of carboxyl-functional polyester resins, polyfunctional epoxy compounds and/or .beta.-hydroxy alkyl amides, as well as further customary additives, if required, wherein the coating system contains at least one linear carboxyl-functional polyester resin of maximally 10 mol-part of isophthalic acid and at least 90 mol-parts of at least a further dicarboxylic acid from the group of aromatic dicarboxylic acids with 8 to 16 C-atoms, aliphatic dicarboxylic acids with 6 to 22 C-atoms and cyclo-aliphatic dicarboxylic acids with 8 to 16 C-atoms, and at least 90 mol-parts of at least one branched aliphatic diol with 4 to 12 C- atoms, and maximally 50 mol-parts of at least one linear aliphatic diol with 2 to 22 C-atoms and/or at least one cyclo-aliphatic diol with 6 to 16 C-atoms as the binder resin. The invention furthermore relates to a process for producing thermosetting coating systems on the basis of carboxyl-functional polyester resins, wherein the binder resin, the at least one cross-linking agent from the group of polyfunctional epoxy compounds and .beta.-hydroxy alkyl amides and, if required, further customary additives in accordance with claims 1 to 11 are mixed in the melt at 90 to 130°C, extruded, removed, granulated, comminuted and screened to a size of less than 100 µm. Finally, the invention relates to the use of the thermosetting coating system and to a protective layer produced from this coating system.
Hoppe Manfred
Kaplan Andreas
Kinkelin Eberhard
Ems-Inventa Ag
Ems-Patent Ag
Gowling Lafleur Henderson Llp
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