Series 237SC
ChemBloc
This product has been discontinued. Please refer to Series N237SC | ChemBloc for a suitable alternative, or contact your local sales representative for further assistance.
Generic Type
Modified Polyamine Epoxy
Common Usage
A multi-purpose resin for fiberglass reinforced mat (65 mils) or mortar/fiberglass reinforced mat (125 mils) secondary containment systems. Protects against chemicals, thermal cycling, impact and abrasion.
Topcoats
Series 280, 282, 252SC. Note: A saturant coat of 237SC liquids is required over fiberglass mat prior to application of topcoat.
Primers
Self-priming or Series 201 (for horizontal and vertical applications) or Series 208, 241 (for horizontal applications only).
Surfacer/Filler/Patcher
Series 215, 218. Note: A repair kit of 201, with Part C fumed silica, is available for small patching/surfacing repairs (reference Technical Bulletin 99-22). For more extensive repairs and additional information, contact your Tnemec representative or Tnemec Technical Services.
Number of Components
Resin Containment Kit (RCK)–Two: Part A (epoxy) and Part B (amine)
Mortar Containment Kit (MCK)–Three: Parts A (epoxy), B (amine) and C (aggregate)
Colors
00GR Gray. Color may not be uniform and is not intended to be finish coat—see Topcoats listed below. Note: Epoxies chalk and yellow with age, extended exposure to UV and artificial lighting. Lack of ventilation, incomplete mixing, miscatalyzation or the use of heaters that emit carbon dioxide and carbon monoxide during application and initial stages of curing may cause amine blush, possibly affecting adhesion of subsequent topcoats. Epoxies will stain with extended exposure to certain acids. As a result, darker colors are recommended.
Recommended DFT
Primer: 4.0 to 12.0 mils (100 to 305 microns) per coat
Resinous Basecoat: 6.0 to 12.0 mils (150 to 305 microns)
Mortar/Slurry Basecoat: 60 to 80 mils (1525 to 2030 microns)
Saturant: 16.0 to 24.0 mils (405 to 610 microns)
Curing Time
| Temperature | To Topcoat | Place in Service | Full Cure |
|---|---|---|---|
| 75°F (24°C) | 12 to 72 hours | 24 hours | 5 days |
If more than 72 hours have elapsed between coats, the ChemBloc coated surface must be mechanically abraded before topcoating. Note: A 24-hour cure provides for traffic, secondary containment, and certain mild chemical exposures. Up to five days cure is required for certain severe chemical exposures. Contact your Tnemec representative or Tnemec Technical Services.
Volume Solids
100% (mixed)
Base Coats
Series 237SC. (For a flexible basecoat option, refer to Series 206SC product data sheet.)
Theoretical Coverage
1,604 mil sq ft/gal (39.4 m²/L at 25 microns). See APPLICATION for coverage rates.
HAPS
Unthinned: 0.0 lbs/gal solids
Thinned 10%: 0.7 lbs/gal solids
Volatile Organic Compounds
Unthinned: 0.25 lbs/gallon (30 grams/litre)
Thinned 10%: 0.89 lbs/gallon (106 grams/litre)