Series 1438
Vinester
Generic Type
Novolac Vinyl Ester
Common Usage
A high-build, novolac vinyl ester, glass-flake filled lining with an enhanced elevated temperature resistance in dry and wet corrosive environments. Series 1438 is ideal for use in flue gas desulfurization (FGD) units, hot duct work, and wet and dry absorbers. Also an outstanding primary lining for many challenging chemical immersion services. Formerly ProPolymer 4844S.
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Volatile Organic Compounds
2.37 lbs/gallon (284 grams/litre)
Recommended DFT
20.0 to 60.0 mils (510 to 1524 microns)
Intermediate
Series 1422, 1428
Curing Time
| Temperature | To Recoat | Immersion | Maximum Recoat |
|---|---|---|---|
| 90°F (32°C) | 3 hours | 24 hours | 3 days |
| 75°F (24°C) | 4 hours | 48 hours | 5 days |
| 50°F (10°C) | 12 hours | 4 days | 7 days |
Note: Certain service applications may require elevated temperature cure for maximum performance. Recoat times are typical for coating to be dry-to-touch and ready for the next application. Immersion and certain other services may require longer cure times and/or elevated temperature post cure for optimal performance. ASTM D2583 Barcol Hardness check is also recommended. Coating that has exceeded its maximum recoat time should be checked for styrene or acetone sensitivity or uniformly scarified to assure secondary bonding. Consult Tnemec Technical Services.
Finish
Semi-gloss
Volume Solids
85.0 ± 2.0% (mixed). Series 1438 contains a reactive monomer and some loss will occur during application and cure. Actual solids by volume will vary depending upon temperature and air movement.
Number of Components
Two: Part A (base) and Part B (catalyst)
Primers
Series 1407. Note: For services above 180°F (82°C), do not use a primer.
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