Wrinkle finish powder coatings

Details Wrinkle finish powder coatings Wrinkle finish powder coatings

1996-12-20

1997-12-09

Sellers, Robert E.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

525428, 525533, 525526, 525934, C08L 6300

Patent

active

056958528

ABSTRACT:
The use of an amine salt of trifluoromethanesulfonic acid as a catalyst for the curing of hydroxyl-functional resins provides a wrinkle finish. The hydroxy-function may be present in polyesters, epoxies, and acrylate or methacrylate resins, among others. The polyester resins which are able to provide such a finish have a hot plate melt flow of at least about 50 mm but if it is more than 150 mm, the gel time of the resin must not be more than about 280 seconds. The minimum gel time in the case of polyesters is about 30 seconds.

REFERENCES:
patent: 4271277 (1981-06-01), Golownia
patent: 4341819 (1982-07-01), Schreffler et al.
patent: 5212263 (1993-05-01), Schreffler
Alm, "Formulation Techniques using Triflic Acid Salts" Modern Paints & Coatings, pp.88-92, Oct. 1980.
Smansri, "Powder Coatings, Why-How-When" J. of Paint Technology, v.44, No. 565, pp. 30-37, Feb. 1972.

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