Drying times of alkyd resins

DRIERS COMBINATIONS AND DRYING TIMES

Scope:

Resin solutions when applied as a film, it dries in three different manners.

1.  Resin film dry by solvent evaporation

2.  Resin film dry by solvent evaporation and chemical reaction

3.  Resin film dry by chemical reaction

Procedure:

Resin solution bring it to application viscosity and apply 100 microns on glass plate and place it on drying recorder to dry.  Record Touch Dry and Hard Dry.

PRODUCT	SPL QTY	CAL %	CO %	LEAD %	TOUCH DRY	HARD DRY
Long/Medium oil  Alkyds	100 gr.	0.12	0.05	0.5	1 - 2½ hours	4 – 8 hours
Medium oil chain stopped Alkyds	100 gr.	----	0.05	0.5	1 - 2 hours	3 – 5 hours
Short oil chain stopped Alkyds	100 gr.	0.12	0.042	0.43	10 – 15 minutes	4 – 6 hours
Styrenated Alkyds	100 gr.	----	0.05	----	10 – 15 minutes	1 – 3 hours
Urethane Alkyds	100 gr.	----	0.05	0.5	1 hour	4 – 6 hours