Sunday, November 17, 2013

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

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