Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1973-12-05
1976-02-24
Derrington, James H.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260 4228, 260 4229, 260 47EC, 260 784D, 260837R, 260856, 260901, C08L 6300
Patent
active
039404536
ABSTRACT:
A method of preparing a homogeneous thermosetting powder paint composition which cures to form a coating exhibiting outstanding exterior durability, adhesion and impact strength. The method comprises: introducing a liquid including at least a crosslinkable copolymer and an inert solvent into a devolatilizing zone wherein the inert solvent is removed and the nonvolatile material is separated in a molten state; feeding said nonvolatile molten material under pressure into a heated mixing zone comprising a static mixer; simultaneously feeding a stoichiometric quantity (.+-. 30%) of a molten crosslinking agent for said copolymer into said mixing zone under pressure; removing the mixture of nonvolatile molten material and molten crosslinking agent from said mixing zone; cooling said mixture to form a solid material; and purlverizing the solid material to form a powder.
REFERENCES:
patent: 3028251 (1962-04-01), Nagel
patent: 3730930 (1973-05-01), Labana
patent: 3759854 (1973-09-01), Chang et al.
patent: 3781379 (1973-12-01), Theodore
patent: 3801348 (1974-02-01), Helm
Golovoy Amos
Labana Santokh S.
van Oene Henk
Derrington James H.
Ford Motor Company
May Roger L.
Zerschling Keith L.
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