Authored by Nathan Kofira, Market Development Manager

Presented by Bodan Ma, AP Senior Technical Marketing Manager

NovelAdditivefor Anti-CorrosiveCoolRoofApplications

MARKETOUTLOOK

COOLROOFCOATINGS

Cool Roof Coatings are designed to: •  Reduce urban heat island effect •  Increase building energy efficiency •  Improve occupant comfort •  Reduce thermal shock

Reduceglobalclimateeffectsofgreenhousegases

They accomplish this by having: •  High Solar Reflectivity (SR) •  High Thermal Emissivity (TE)

TotalSolarReflectance(TSR)

PROBLEMSTATEMENTS

Low slope elastomeric roof coatings (ERC) applied to metal roofs require the need of a secondary primer layer for corrosion protection

Primer layers often contain a heavy metal based corrosion inhibitors – e.g. Zinc phosphate

Dirt pick-up (from pollution, smog, dust) is the leading cause of reduced solar reflectance for aged white ERCs

High slope roof coatings are often non-white and require expensive IR pigments to reflect solar radiation

MULTIFUNCTIONALREQUIREMENTS

Solar Reflective • Higher solar reflectance • Reduce TiO2 and filler • Reduced Energy Costs

Corrosion Inhibiting • Heavy Metal Free • Small Particle Size • Eliminate primer layer

Resists Dirt Pick Up • Improved DPUR • Maintain solar

reflectance • High Surface Area

Pigment

MULTIFUNCTIONALSOLUTIONPatent pending technology

• Maintains coating flexibility at low temp

• No cracking

• Increased TSR for low and high slope roof coatings

• Filler Replacement

• Heavy metal free • GRAS • Conforms to 21 CFR

175.300

• White non-refractive pigment (Refractive Index = 1.6)

• High surface area, small particle size

Easy to Disperse

Corrosion Protection

Coating Flexibility

Reduced Energy

Cost

TESTRESULTS:TotalSolarReflectance

LOW SLOPE

HIGH SLOPE

EXP 314

EXP 314

HIGHSLOPEROOFINGSUBSTRATESReroofing, Tear-offs and New Construction: Mainly Residential

LowSlopeReroofing,Tear-offsandNewConstructionareMainlyCommercial

TESTRESULTS:LowTemperatureFlexibility

Following initial ASTM G 155 Xenon Arc (light & water) Weathering for 1000 hours

ASTM D 6083 -- PASSED

Effective in colder climates where extra levels of low temperature flexibility are required

MULTIFUNCTIONALCONCEPT

Metal Roof Metal Roof

Primer coating ERCERC

with ACP with EXP 314

Higher TSR, Better Dirt Pick-Up Resistance

Lower TSR, Worse Dirt Pick-Up Resistance

Current elastomeric roof coatings (ERC) on metal roofs: -  Primer coating layer containing anti-corrosive

pigment (e.g. zinc phosphate, a heavy metal based product) is used to prevent further corrosion

-  White elastomeric roof coating which provides solar reflectance and thermal emissivity is applied over onto the dried primer

-  ERC contains TiO2, CaCO3, ZnO -  More paint on roof, more weight, higher costs -  Higher installation and inventory costs

One-coat elastomeric roof coating (ERC) on metal roofs: -  GoPrimerless!-  One coat of the white elastomeric roof coating can be

applied -  ERC provides anticorrosive performance, solar

reflectance and thermal emissivity with improved DPUR-  Lower maintenance costs

GUIDEFORMULATIONGRIND Control 5% Experimental 314

Replacement of Calcium Carbonate

lbs/100 gal % wt lbs/100 gal % wt Water 130.0 11.69 130.0 11.63 Tamol 851 4.0 0.36 4.0 0.36 Propylene Glycol 6.0 0.54 6.0 0.54 DEE FO 1015 1.0 0.09 1.0 0.09 KTPP 1.0 0.09 1.0 0.09 Zoco 101 30.0 2.70 30.0 2.68 Ti-Pure R-960 50.0 4.50 50.0 4.47 HALOX® CW-314 0.0 0.00 58.5 5.24 HUBERCARB G3 270.0 24.29 217.2 19.44 Water 20.0 1.80 20.0 1.79

LETDOWN Rhoplex EC- 2885 504.0 45.34 504.0 45.10 Texanol 6.5 0.58 6.5 0.58 Add grind portion under agitation and mix until uniform. DEE FO 1015 6.0 0.54 6.0 0.54 Premix the following, then add to above under agitation. Water 75.2 6.76 75.2 6.73 Natrosol 250 H4BR PA 5.0 0.45 5.0 0.45 Mix well for 10 minutes. Ammonia Hydroxide (28%) 3.0 0.27 3.0 0.27

TOTAL 1111.70 100.00 1117.40 100.00

Experimental314

TESTRESULTS:CorrosionInhibitionASTMB-117White Elastomeric Roof Coating for Low Slope Applications (13mil DFT)

Control ERC (1-coat) With TiO2/CaCO3 Failed at 96 hours

Control ERC (1-coat) with EXP-314 At 206 hours

Control ERC (1-coat) with EXP-314 At 336 hours

TESTRESULTS:CorrosionInhibitionASTMB-117TWO COAT versus ONE COAT APPLICATION over Steel

ERC + Primer (ACP) Failed at 144 hours

ERC (1-coat) with EXP-314 at 336 hours

SUBSTRATE PRIMER

ERC

SUBSTRATE

ERC

13milDFT 13milDFT

TESTRESULTS:CorrosionInhibitionASTMB-117TWO COAT COMPARISON over G70 Galvanized

2 Coats ERC with no ACP at 240 hours

1 Coat primer with EXP-314 and 1 Coat ERC

with no ACP at 400 hours

SUBSTRATE ERC ERC

SUBSTRATE

13milDFT 13milDFT

PRIMER ERC

TESTRESULTS:CorrosionInhibitionASTMB-117USES BEYOND ROOF COATINGS; 2K WB Epoxy, 1.8mil DFT

B952 Treated Steel with no ACP

B952 Treated Steel with 5% EXP-314

TESTRESULTS:CorrosionInhibitionASTMB-117USES BEYOND ROOF COATINGS; WR Alkyd, 2.2mil DFT

CRS with 2% modified Zinc phosphate

CRS with 2% EXP-314

SUMMARY

CoolRoofs!  Reduce building energy consumption !  Lower building maintenance costs and extend the lifetime of the roof !  Improve human health and indoor comfort for non air-conditioned buildings

BenefitsofExperimental314!  Allows your coating to reflect more solar radiation hence reducing your energy cost !  Provides superior anticorrosion for your ERC & traditional metal coatings !  Unique high surface area contributes to improved solar reflectance !  Works with white and colored roof coatings !  Green Technology – No heavy metals, GRAS, 21 CFR 175.300 !  Patent pending multi-functional technology

THANKYOUVisit us at www.halox.com

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