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Fig. 3 | Heritage Science

Fig. 3

From: Polyurethane coatings in twentieth century outdoor painted sculptures. Part II: comparative study of four systems by means of Py-GC/MS

Fig. 3

Pyrograms of 2KFPU reference samples, Fluoronar Series 1072 V® orange topcoat from Tnemec® (top left), Fluorokem HS® Satin black topcoat from Sherwin–Williams® (top right), Coraflon ADS® Intermix black topcoat from PPG® (left bottom) and Carboxane 950® black topcoat from Carboline® (right bottom). The dominant peak of 2-methylcyclopentanone at 4.62 min and, the much less intense peak of cyclohexanol at 4.49 min are characteristic features of FPU pyrograms

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