Download - Hybrid Technology for Roof Coatings Technology for Roof Coatings Bruce Barbera, Misty Huang and Vikram Kumar July 2016 ... PO m ck e Roof Coating Formulation used

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Hybrid Technology for Roof Coatings

Bruce Barbera, Misty Huang and Vikram Kumar

July 2016

• SPUR+* pre-polymer technology fit in Roof Coating formulations

• SPUR+ Y-15990 pre-polymer features of interest in formulating Roof

Coatings

• SPUR+ Y-15990 pre-polymer Product comparison vs. other commercial

benchmark chemistries

Advantages over Silicone Roof Coatings

Advantages over Acrylic Roof Coatings

Agenda

2 *SPUR+ is a trademark of Momentive Performance Materials Inc. Copyright © 2016 Momentive Performance Materials Inc. All rights reserved.

catalyst / moisture

+ R´OH

Si O Si

O

O

Si O

Si

O O

Si

Si O

Si

O

Si

O O Si

O O

Si Si

O Si

Si O O

Si Si

O Si

Si

O

O

O

O

Si O

O

O

O O

Si Si

Si

O

Si Si

Si O

Si

Si

Si

Si

O O

O O

Si Si

Si

SPUR+* Prepolymer: Structure and cure mechanism

Silane Polyurethane backbone Silane

(R´O)3Si-R-X-C-NH

O

NH-C-X-R-Si(OR´)3

O

*SPUR+ is a trademark of Momentive Performance Materials Inc. Copyright © 2016 Momentive Performance Materials Inc. All rights reserved.

4

Weatherability of SPUR+* pre-polymer formulation SPUR+ Pre-polymer can be formulated to give good durability - no Cracks, Chalking, or

Yellowing observed on extended QUV exposure

SPUR+ pre-polymer Based Sealant

Commercial Silicone A Commercial Silicone B

5500 hours QUV A test cycle

per ASTM G-53

• 4 hr UV Exposure @ 60°C

• 4 hr condensation @ 50°C

Note: Test data. Actual results may vary.


50% Modulus vs. QUV Exposure Time

0

5

10

15

20

25

30

35

40

45

50

55

60

0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000

Time in QUV, HR

Mo

du

lus @

50%

, p

si

50% Modulus, psi SPUR+ Sealant

50% Modulus, psi Silicone A

50% Modulus, psi Silicone B

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• After 5500 hr of QUV-A study SPUR+ pre-

polymer based formulation showed

comparable weatherability to a Silicone RTV

• This excellent weatherability suggests SPUR+

pre-polymer may be a excellent candidate

resin for applications in building construction,

including roof coatings

Hardness vs. QUV Exposure Time

0

2

4

6

8

10

12

14

16

18

20

22

24

26

28

30

0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000

Time in QUV, Hr

Du

ro

mete

r,

Sh

ore A SPUR+ Sealant

Silicone A

Silicone B

Tensile @ Break vs. QUV Exposure Time

0

25

50

75

100

125

150

175

200

225

250

0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000

Time in QUV (Hr)

Ten

sile @

Bre

ak, p

si

SPUR+ Sealant

Silicone A

Silicone B



Weatherability of SPUR+* pre-polymer formulations SPUR+ Pre-polymer based formulations can provide good durability – physical properties

show minimal change during QUV exposure

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Dirt pick-up SPUR+* Pre-polymer based formulations give low dirt pick-up

Competitive hybrid resin

based formulation



SPUR+ Pre-polymer

based formulation



Coatings





Agenda


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Typical Properties of SPUR+* Y-15990 pre-polymer and formulations SPUR+ Y-15990 Pre-polymer enables a broad range of properties


SPUR+ Y-15990

Prepolymer

SPUR+ Y-15990 pre-

polymer based Roof

Coating Formulations

Viscosity (cP at 25C) ~ 2500 2000 - 10,000

Active content (%) 100

Properties of Cured film

Tensile Strength (psi) ~ 600 200 - 550

Elongation (%) ~ 200 90 - 330

Hardness Shore A 40 45 - 60

Tear resistance (lbs/in) 45 - 68

Perm/20 mil ~3

Glass transition temperature oC -55

Typical properties are average data and are not to be used as or to develop specifications.

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Tensile Strength at BK (psi) 392

Elongations at BK (%) 330

Hardness Shore A 46

Weatherability of the roof coatings

Starting Formulation

Starting Formulation of SPUR+* Y-15990 pre-polymer Based Roof Coating

Tensile

Strength @

BK (psi)

Elongation

(%)

Hardness

Shore A

Heat Resistance test at 80C

Initial 392 330 46

1 week after 348 242 45

3 week after 319 220 45

QUV-A at 50C (ASTM G 53)

Initial 392 330 46

1 week after 348 246 43

3 week after 363 275 40

Cold temperature (-20 to -25C)

Samples placed in the freezer for four hours, they were still

flexible and bendable

Mechanical Properties ASTM D412 & C661

Ingredients (%)

SPUR+ Y-15990 prepolymer 44.9

Silquest* A-137 Silane 7.45

Plasticizer 7.64

GCC treated (2 μm) 34.36

UV Stablizers 1.52

TiO2 2.86

Silquest A-1120 Silane 0.46

Silquest A-2120 Silane 0.46

Fomrez† catalyst UL-59 (DOT) 0.38

Total 100

Viscosity of the formulation (cP) ~ 2,000

*SPUR+ and Silquest are trademarks of Momentive Performance Materials Inc. † Fomrez is a trademark of Chemtura Corporation, used with permission by Galata Chemicals LLC. Copyright © 2016 Momentive Performance Materials Inc. All rights reserved.


Product formulations are included as illustrative examples only. Momentive makes no

representation or warranty of any kind with respect to any such formulations, including, without

limitations, concerning the efficacy or safety of any product manufactured using such

formulations.

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Accelerated weatherability of SPUR+* Y-15990 pre-polymer Based Roof Coatings

Extended weatherability at a UV stabilizer level as low as 1.5 phr

Initial image



UV Stabilizer loading 3 phr 2 phr 1.5 phr

6 month in QUV-A (water cycle)

+ 3 month in QUV-B, no surface

cracks

6 month in QUV-A (water cycle)

+ 6 month in QUV-B No Surface

Cracks Surface

Cracks

Surface

Cracks

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Adhesion to typical Roof/Wall substrates SPUR+* Pre-polymer formulations provide primerless adhesion to multiple substrates when

used with optimized adhesion promoter package

Peel adhesion test according to ASTM C794

lbs failure

Aged:

EPDM white 3.6 100% CF

TPO 2.8 100% CF

EPDM black 4.5 100% CF

PVC 4.1 100% CF

Non-aged

PU Foam hand pull 100% CF

Ag

ed

TP

O

Ag

ed

EP

DM

bla

ck

Ag

ed

EP

DM

wh

ite

PU

Fo

am

Roof Coating Formulation used

SPUR+ Y-15990 pre-polymer 38.1

Plasticizer & reactive diluent 6.54

UV stabilizer 0.65

GCC untreated 50

TiO2 1.31

Silquest* silane package 3.34

Fomrez† catalyst UL-28 0.04

DBU 0.02

total 100

*SPUR+ and Silquest are trademarks of Momentive Performance Materials Inc. † Fomrez is a trademark of Chemtura Corporation, used with permission by Galata Chemicals LLC. Copyright © 2016 Momentive Performance Materials Inc. All rights reserved.


Product formulations

are included as

illustrative examples

only. Momentive

makes no

representation or

warranty of any kind

with respect to any

such formulations,

including, without

limitations, concerning

the efficacy or safety of

any product

manufactured using

such formulations

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Select Lab Formulations for Roof Coatings Pre-polymer loading level is a critical lever to dial-in desired properties

Example

1 Example

2 Example

3 Example

4

Viscosity (cP) 5800 3800 10000 3100

Tensile strength @ BK

(psi) 325 315 549 316

Elongation @ BK (%) 239 204 129 90

Hardness Shore A 52 61 58 58

Tear resist (lbs/in) 58 47 68 33

Properties of the formulated roof

coatings

Example

1 Example

2 Example

3 Example

4

SPUR+* Y-15990 pre-polymer 49.2 45.4 35 25

SPUR+ 1015 pre-polymer 4

Plasticizers / reactive diluent 3.95 4.53 8.14

Silquest A-171* 0.2 2

Fillers 45.4 45.4 52 59

TiO2 1.97 1.97 3 1.9

UV Stabilizers 0.99 0.99 0.5 0.42

Silquest* A-1100 0.47 0.47 0.45 3

Silquest A-2120 0.5

Silquest A-Link* 15 1.58 1.58

Silquest A-Link 600 0.45

Fomrez† catalyst SUL-4 0.07 0.04

Fomrez catalyst UL 59 (DOT) 0.24 0.24

Total 100 100 100 100

*SPUR+ , Silquest , Silquest A-171 and A-Link are trademarks of Momentive Performance Materials Inc. † Fomrez is a trademark of Chemtura Corporation, used with permission by Galata Chemicals LLC. Copyright © 2016 Momentive Performance Materials Inc. All rights reserved.


Tear resist test – ASTM D624

Product formulations are included as illustrative examples only. Momentive makes no

representation or warranty of any kind with respect to any such formulations, including, without

limitations, concerning the efficacy or safety of any product manufactured using such formulations

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Select Lab Formulations for Roof Coatings SPUR+* Y-15990 pre-polymer can be used with a wide variety of fillers

Filler type and loading level are 2 additional levers to dial-in desired properties

*SPUR+ , Silquest and A-Link are trademarks of Momentive Performance Materials Inc. † Fomrez is a trademark of Chemtura Corporation, used with permission by Galata Chemicals LLC. Copyright © 2016 Momentive Performance Materials Inc. All rights reserved.


Product formulations are included as illustrative examples only. Momentive makes no representation or warranty of any kind with respect to any such formulations, including, without limitations, concerning the efficacy or safety of any product manufactured using such formulations

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Effect of environmental conditions on cure kinetics of SPUR+* Y-15990

pre-polymer based formulations

10

13

18

24

0

10

20

30

40

50

60

70

80

0 5 10 15 20 25 30

Rela

tiv

e H

um

idit

y (

%)

Skin Time (min)

Effect of Humidity on Skin Time of SPUR based Formulations @ 25C

Ingredients Example 7

SPUR+ Y-15990 pre-polymer 35.1

SPUR+ 1015LM pre-polymer 10

Plasticizer 6

GCC untreated (3.5 μm) 42.1

TiO2 4

Silquest* A-1120 0.5

Silquest A-2120 0.5

Fomrez† catalyst SUL-4 0.2

total 100

• SPUR+ Y-15990 pre-polymer based formulations can be applied in low

humidity and low temperature conditions.

• This has been demonstrated in field trials in the Northeast US in the month

of January. (~ 25-40 oF; ~ 50-80 % RH)

• We believe this is attributed to Low Tg of the SPUR+ pre-polymer and low

activation energy levels for silanol condensation (30.5 kcal/mol)

*SPUR+ ,and Silquest are trademarks of Momentive Performance Materials Inc. † Fomrez is a trademark of Chemtura Corporation, used with permission by Galata Chemicals LLC. Copyright © 2016 Momentive Performance Materials Inc. All rights reserved.


Product formulations are included as illustrative examples only. Momentive makes no representation or warranty of any kind with respect to any such formulations,

including, without limitations, concerning the efficacy or safety of any product manufactured using such formulations



Coatings





Agenda


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† Water Permeance Test (ASTM E-96 BW) ††Water Swelling Test (ASTM D 471-12a)

Indirect measurement of Water Ponding Resistance - Vs. Commercial Acrylic: much improved

- Vs. Commercial Silicone: Similar

Perm†

(20 mil) Water swelling ††

(7 days)

Commercial Acrylic Roof Coating ~ 40-45 26% Commercial Silicone Roof Coating ~ 3 0.4%

SPUR+* Y-15990 pre-

polymer based Roof Coating 2 1.8%



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Mechanical properties - Tear strength: much better than commercial Silicone; similar to Acrylic

Commercial

Acrylic Roof

Coating

Commercial

Silicone Roof

Coating

SPUR+* Y-15990

pre-polymer based Roof coating

Tensile Strength (psi) 302 250 325

Elongation (%) 102 100 239

Hardness Shore A 60 42 52

Tear Resistance (lbs/in) 57 19 58



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< 5% loss of first layer

Silicone Roof coating SPUR+* Y-15990 pre-polymer

based Roof coating

- While conducting the x-hatch test, the top coat peeled off - Additionally, the Tape did not stick to coating

Recoatability Much better than Silicone based material

Poor re-coat



SPUR+* Y-15990 pre-polymer based Roof Coating: Key Attributes Offers important property differentiation vs. Acrylic and Silicone based Roof Coatings

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Roof coatings Silicone based

roof coating

Waterborne

Acrylic based

roof coating

SPUR+ Y-15990 pre-

polymer based roof

coatings

Water Ponding

resistance √ √

High Tear Resistance √ √

Good Flexibility √? √

Weatherability √ √ √

Sprayable/rollable

Coating (1 layer

coating) √ √

Winter application √ √

Recoatablility √ √


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