Process for making powder coatings

Details Process for making powder coatings Process for making powder coatings

1975-09-29

1977-09-20

Rzucidlo, Eugene C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 292EP, 260 296NR, 260 296PM, 260 47EP, 260 775TB, 260831, 260834, C08G 5918

Patent

active

040497445

ABSTRACT:
Powder coating compositions are prepared by first forming a dispersion in water of a complex polyhydroxy polyether resin using as the dispersant an inorganic or organic base salt of a polymeric carboxylic acid having an acid value before salting of at least 50, acidifying the dispersion and then isolating and drying the precipitated fine particle size resin. Such resins in this finely divided form find particular utility as powder coatings for metallic articles.

REFERENCES:
patent: 2668805 (1954-02-01), Greenlee et al.
patent: 2811495 (1957-10-01), Witcoff et al.
patent: 2872427 (1959-02-01), Schroeder
patent: 2899397 (1959-08-01), Aelony et al.
patent: 3561003 (1971-02-01), Lanham et al.
patent: 3586654 (1971-06-01), Lerman et al.
patent: 3879324 (1975-04-01), Timmons et al.
patent: 3908049 (1975-09-01), Fitko

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