Michelle BauerSenior Chemist

Novel Additive for

Anti-Corrosive Cool Roof Applications

MARKET OUTLOOK

COOL ROOF COATINGS

Cool Roof Coatings are designed to: • Reduce urban heat island effect

• Increase building energy efficiency

• Improve occupant comfort

• Reduce thermal shock

Reduce global climate effects

of greenhouse gases

They accomplish this by having:

• High Solar Reflectivity (SR)

• High Thermal Emissivity (TE)

Total Solar Reflectance (TSR)

PROBLEM STATEMENTS

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

MULTIFUNCTIONAL REQUIREMENTS

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

MULTIFUNCTIONAL SOLUTION

Patent 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

TEST RESULTS: Total Solar Reflectance

LOW SLOPE

HIGH SLOPE

NEW CI

NEW CI

HIGH SLOPE ROOFING SUBSTRATES

Reroofing, Tear-offs and New Construction: Mainly Residential

Low Slope Reroofing, Tear-offs and New Construction are Mainly Commercial

TEST RESULTS: Low Temperature Flexibility

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

MULTIFUNCTIONAL CONCEPT

Metal Roof Metal Roof

Primer coating ERCERC

with ACP with NEW CI

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:- Go Primerless!- 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

CURRENT FUTURE

GUIDE FORMULATION

GRIND Control 5% NEW CI

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

Experimental 314

TEST RESULTS: Corrosion Inhibition ASTM B-117

White 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 NEW CIAt 206 hours

Control ERC (1-coat)with NEW CIAt 336 hours

TEST RESULTS: Corrosion Inhibition ASTM B-117

TWO COAT versus ONE COAT APPLICATION over Steel

ERC + Primer (ACP)Failed at 144 hours

ERC (1-coat) with NEW CI at 336 hours

SUBSTRATE

PRIMERERC

SUBSTRATE

ERC

13 mil DFT 13 mil DFT

TEST RESULTS: Corrosion Inhibition ASTM B-117

TWO COAT COMPARISON over G70 Galvanized

2 Coats ERC with no ACPat 240 hours

1 Coat primer with NEW CI and 1 Coat ERC

with no ACP at 400 hours

SUBSTRATE

ERCERC

SUBSTRATE

13 mil DFT 13 mil DFT

PRIMERERC

TEST RESULTS: Corrosion Inhibition ASTM B-117

USES BEYOND ROOF COATINGS; 2K WB Epoxy, 1.8mil DFT

B952 Treated Steel with no ACP

B952 Treated Steel with 5% NEW CI

1032 hours

TEST RESULTS: Corrosion Inhibition ASTM B-117

USES BEYOND ROOF COATINGS; WR Alkyd, 2.2mil DFT

CRS with 2% modified Zinc phosphate

CRS with 2% NEW CI

504 hours

SUMMARY

Cool Roofs 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

Benefits of NEW CI 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

THANK YOUVisit us at www.halox.com

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their purposes prior to use. In no event will ICL be responsible for damages of any nature whatsoever resulting from the use or reliance upon Information or the product to which Information refers. Nothing contained herein is to

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