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Yellowing
When yellow surface develops in aging paint, which is particularly more pronounced in white coatings or clear varnishes, the defect is called Yellowing.
Possible Causes |
Solutions |
| Exposing the Surface to Ultraviolet rays of the sunlight. |
• Use UV inhibitor in coating. • Correct the paint, if it is old. |
| Aging can produce yellowish surface. |
• Use aliphatic polyurethanes and acrylics as they yellow less. • NC lacquers, aromatic urethanes, oil drying alkyds conversion varnishes, etc yellow more. • Weigh the choices available and make a decision. |