Next GenerationElastomeric Roof Coatings

Starting Point Formulations:Kraton® SEBS polymers can be used with

different solvents to vary the viscosity and

VOC content of a coating. The formulations

provided here are reasonable starting points

from which formulators can develop finished

formulations that meet all requirements for

specific applications.

Test ASTM Method Result ASTM D6083 Requirement

Viscosity (@73.4°F #4, 6 RPM), cps D2196 16,600 12,000 - 85,000

Volume Solids, % D2697 50 >50

Initial Elongation @73°F, % D2370 878 100 Min

Initial Tensile Strength @73°F, psi D2370 524 200 Min

Tear Resistance (die C), lbf/in D624 129 >60

Permeance (20 mil, 73.4°F, inverted), perms D1653 4.3 50 Max

Water Swelling (20 mil film, 73.4°F, 168 hrs) % D471 0 20 Max

Wet Adhesion (galvanized, 168 hrs, 73.4°F) pli C794/D903 4.5 2.0 Min

Fungi Resistance D4798 0 0

Elongation (1000 hrs @73°F) % D2370 893 100 Min

Low Temp Flex D522 Pass Pass

Appearance (1000 hrs accel weathering) D4798 Pass No Cracking or Checking

Component PBW % Weight

Kraton Polymer

Hydrocarbon resin (midblock)

Hydrocarbon resin (endblock)

Antioxidant

UV stabilizer

Pigment

Filler

Solvent

100

81

19

2

1.6

76.4

100

231

16.37%

13.26%

3.11%

0.33%

0.26%

12.50%

16.37%

37.87%

Kraton™ G1643

Eastotac™ H-130W

Plastolyn™ 290

Irganox™ 1010

Tinuvin™ 328/770

Ti-Pure™ R-902

Imerys™ MW100

Aromatic 100

Example

For use under EPA regulations for thermoplasticrubber coatings and mastics.

ASTM D6083 Test Data

Kraton® G1643 Starting Point Formulation - 430 g/L VOC at 62% solids

Test ASTM Method Result ASTM D6083 Requirement

Viscosity (@73.4°F #4, 6 RPM), cps

Volume solids, %

Initial elongation (@73°F), %

Initial tensile strength (@73°F), psi

Tear resistance (die C), lbf/in

Permeance (20 mil, 73.4°F, inverted), perms

Water swelling (20 mil film, 73.4°F, 168 hrs) %

Wet adhesion (galvanized, 168 hrs, 73.4°F) pli

Wet adhesion (TPO single ply, 168 hrs, 73.4°F) pli

Wet adhesion (EPDM single ply, 168 hrs, 73.4°F) pli

Fungi resistance

Elongation (1000hrs @73°F) %

Low temp flex

Appearance (1000 hrs accel weathering)

D2196

D2697

D2370

D2370

D624

D1653

D471

C794/D903

D4798

D2370

D4798

D2370

D522

D4798

11,300

56.3

683

517

192

5.5

0

14.8

13.8

3.7

0

896

Pass

Pass

12,000 - 85,000

>50

100 min

200 min

>60

50 Max

20 Max

2.0 Min

2.0 Min

2.0 Min

0

100 min

Pass

No cracking or checking

Kraton® G1643 Starting Point Formulation - 250 g/L VOC at 53% solids

Kraton G1652 High Tensile Strength Starting Point Formulation - 545 g/L VOC at 50% solids

ASTM Test Data

Component PBW % Weight Example

Kraton polymer

Hydrocarbon resin (endblock)

Antioxidant

UV stabilizer

Pigment

Filler

Solvent

Solvent (Exempt)

222

105.5

3.25

2.6

100

117.65

145.55

335.4

21.51%

10.22%

0.31%

0.25%

9.69%

11.40%

14.10%

32.50%

Kraton™ G1643

Kristalex™ 3070

Irganox™ 1010

Tinuvin™ 328/770

Ti-Pure™ R-902

Imerys™ MW100

Aromatic 100

PCBTF

Component PBW % Weight Example

Kraton SEBS Polymer 100 15.38% Kraton™ G1652

Hydro'd Resin (midblock) 66.99 10.30% Eastotac™ H-100W

Antioxidant 2.33 0.36% Irganoz™ 1010

UV Stabilizer 1.86 0.28% Tinivin™ 328/770

Pigment 85.88 13.21% Ti-Pure™ R-902

Filler 68.06 10.47% Imerys™ MW100

Solvent 325 50.00% Aromatic 100

Test ASTM Method Result

Viscosity (@73.4 °F #4, 6 RPM), cps D2196 12,200

Volume Solids, % D2697 37.7

Initial Tensile Strength @73 °F, psi D2370 2081

Initial Elongation @73 °F, psi D2370 857

Tear Resistance (die C), lbf/in D624 285

For use under EPA regulations for roof coatings.

For use under EPA regulations for thermoplastic rubber coatings and mastics.

ASTM D6083 Test Data

Kraton™ G1643 Starting Point Formulation - 430 g/L VOC at 62% solids

Give Your Elastomeric Roof Coating the Competitive Edge

Kraton Gives Their Customersthe Best Roofing Solution Available:

Kraton® polymers allow elastomeric roof coating manufacturers and installers to achieve the highest performance level in themarket, and provide for the lowest total cost in use. They can be installed on most roofing substrates including metal, TPO, asphalt,concrete, polyurethane, EPDM and others. Manufacturers using Kraton polymers in their formula can meet the requirements ofASTM D6083 and achieve Energy Star rating.

Peak PerformanceSuperior water resistance—stands up to ponding waterHigher tensile strengthExcellent adhesion to roofing substratesImproved elasticity—withstands roof contractions and expansionsIncreased dirt pick-up resistanceAllows for manufacturer and installer extended warranties

Lower Installation CostsFast cure means a second coat can be applied within four hoursEliminates recoating due to weather-impacted curingDoes not need a primer

Withstands Adverse Weather ConditionsCoatings will not wash off with overnight rainCan be installed in humid or cold conditions without concern Extends the installation season, which equates to increased installations and salesReduces cancelled installations or recoats due to weather-related

issuesSEBS polymers UV resistant and will not yellow over time.

Proven and Time-Tested FormulationsEnergy Star rating achievable and passes ASTM

D6083 requirementsSimplified formulation requires no surfactants,

defoamers, or glycolsHolds pigments very well, resists chalking

Advanced Polymer TechnologyG1643, our new, patented polymer, allows for higher solids without raising viscosityReaches lower VOC levels, well within the EPA regulationsGives formulation options to roofing manufacturers—provides an easy-to-use product that can be spray or roll-applied.

Photo above shows an elastomeric roof coating made withKraton polymers. (Photo courtesy of R.M. Lucas Co.)

Kraton polymers provide a versatile elastomeric roof coatingthat can be installed in wet, humid or cold conditions, which

enables installation convenience and efficiency.

Kraton polymers help elastomeric roof coatings extend the life ofthe roof and reduce building energy costs.

Kraton® Polymers are the Building Blocks for Roof Coating Solutions

Radiative PropertiesCoatings made with Kraton SEBS polymers exhibit excellent

radiative properties as well. Testing has shown best in class

initial reflectance and emittance. Samples prepared with the

G1643 starting point formulation showed the following:

Reflectance: 0.89 ASTMC1549 Emittance: 0.88 ASTMC1371

Dirt Pick Up ResistanceKraton polymers exhibit excellent dirt pick up resistance

for improved long term durability and reflectance. Coatings

made with Kraton polymers have extremely low porosity

and excellent water resistance. Water and stains can’t

penetrate the coating surface easily and the coating will

retain its color better for the long term. The hydrogenated

polymers, like G1643, have excellent UV resistance as well,

so roof coatings made with Kraton polymers will weather

well and resist yellowing and staining for better long term

performance.

Testing completed with coatings in an iron oxide slurry for

500 hrs show that a roof coating containing Kraton G1643

holds up better than a typical acrylic formulation:

TypicalAcrylic

Kraton G1643Coatings

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Company ProfileKraton Performance Polymers, Inc. is a leading global producer of engineered polymers used to enhance the performance of products that touch virtually

every aspect of our lives. The original inventor of styrenic block copolymer (SBC) chemistry in the 1960s, Kraton has a history of innovation dating back

more than 50 years. Used in a myriad of applications, Kraton adds utility, value and customer appeal to products ranging from adhesives and coatings,

paving and roofing to personal care items, medical supplies, electronic and automotive components. Kraton offers its products to a diverse group of

more than 800 customers in over 60 countries worldwide. Dedicated to “Giving Innovators Their Edge,” we also collaborate with manufacturers on

custom solutions to specific needs.

Legal Disclaimer:We believe the information set forth above to be true and accurate, but any recommendations, presentations, statements or suggestions that may be made in the foregoing text are without any warranty or guarantee whatsoever, and shall establish no legal duty on the part of Kraton Performance Polymers, Inc. or any of its affiliates. Furthermore, nothing set forth above shall be construed as a recommendation to use any product in conflict with any existing patent rights. Kraton Performance Polymers, Inc. expressly disclaims any and all liability for any damages or injuries arising out of any activities relating in any way to this publication.

Kraton and the Kraton logo are registered trademarks owned by Kraton Performance Polymers, Inc.Giving Innovators Their Edge is a registered service mark owned by Kraton Performance Polymers, Inc.

© 2014 Kraton Performance Polymers, Inc. All rights reserved.

For more information, please visit our website at www.kraton.com or email info@kraton.com.

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