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THIXATROL® PM 8058Next generation rheology modifier for greater performing, more sustainable protective coatingsOCCA SEMINARPresented October 13th, 2021, byUdo Schonhoff, Technical Sales Manager
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Elementis company introductionRECOGNIZED LEADER IN RHEOLOGY AND PERFORMANCE ADDITIVES
Established in 1844Employs >1,600 colleagues around the worldServing Coatings, Personal Care, Energy and Chromium markets>30 locations
27 manufacturing plants3 innovation centers
2018 sales revenue of $822mWorld’s largest source of high-quality hectorite clay Supplier of high-performance natural talc
Strong network of supply and technical/application support
Leadership in rheology and specialty additives• Renowned brands (BENTONE® , RHEOLATE ®
, NUOSPERSE ® and THIXATROL® ) and technologies
Established in coatings applications (architectural, industrial, waterborne and solventborne, adhesives and sealants, and more)
Strong focus on sustainable products and solutions
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Udo SchonhoffIN A NUTSHELL…
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47 years old• Technical Sales Manager• With Elementis since 1999• Previous Bayer; BorchersMarried• 1 son; 14 years oldBicyclingPhotography
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AgendaNISAT BASED RHEOLOGY MODIFIERS
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Introduction, market overviewTechnical background organic thixotropesProduct overview diamide based THIXATROL® gradesCase study: THIXATROL® PM 8058 in industrial protective epoxy coating
Influence of various solvent polarities on efficiency Affect on
Sag control Storage stability Comparison to market references
Methods of incorporationConclusion
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Market introduction
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Corrosion Protection CoatingsREGIONAL REVIEW
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Source: Marketsand markets Reasearch Pvt Ltd. (www.marketsandmarkets.com)
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Epoxy Accounts for the Largest Share in Corrosion Protection
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Source: Marketsand markets Reasearch Pvt Ltd. (www.marketsandmarkets.com)
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Diamide based organic thixotrope Product overview and Background
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THIXATROL® - Diamide based thixotropes
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Composition• 100 % active powder based on special diamide (0% castor derivative)• Thixotropic additive for low to high polarity systems• > 75% based on renewable resourcesTHIXATROL® Plus• Very efficient in top coatings / not recommended for primersTHIXATROL® Max• Very efficient for primers and top coats and MS polymer based systemsTHIXATROL® AS 8053• Low-temperature applicable for adhesive and sealants applications• Especially recommended for MS polymer sealants and adhesivesTHIXATROL® PM 8054• Broad band applicable, highly effective grade for industrial applicationTHIXATROL® PM 8056• Low-temperature applicable, highly effective grade for industrial systemsTHIXATROL® PM 8058• Low-temperature applicable, highly effective grade for industrial systems; suitable for highly polar systems
New product
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ThixatropeActivation- How it Works
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Wetting/Deagglomeration
• 15’- 20’ mixing @ ambient temperature
Dispersion/Activation/Dwell Time
• 15’- 20’ dispersion @ target processingtemperature
Cool Down
• Agitate! (castor based)• Cool to below target
activation temperature
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THIXATROL® PM 8058INTRODUCING A NEW APPROACH
• Less influence on performance by polar solvents like alcohols – e.g. Benzyl
alcohol
• Higher Efficiency
• Low temperature activation
• Broad activation window
• Flexible and easier to incorporate
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Test System
2 Component Epoxy- protective coating
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Testing formulations2C EPOXY VHS-1 FORMULATION FORMULATED WITH VARIOUS SOLVENT COMPOSITION
XYLENE RICH ISOBUTANOL RICH BENZYL ALCOHOL RICH
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Xylene Isobutanol Benzylalcohol
High build epoxy coating equipped with varying solvent compositions; 0.5% rheology modifier; Solvent ratio calculated only including parts of the component A! Xylene content includes also the solvent part of the epoxy resin
62.920.9
16.3 14.7
75.6
9.8 14.79.8
75.6
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THIXATROL® PM 8058 vs Reference SOLVENT INFLUENCE ON VISCOSITY BUILD
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Rheology curves determined using the Anton-Paar MCR 301 rheometer, equipped with PP 50 measuring geometry at a temperature of 23°C and a gap width of 1 mm;High build epoxy coating equipped with varying solvent compositions; 0.5% rheology modifier activated at 66°C; Solvent ratio calculated only including parts of the component A! Xylene content includes also the solvent part of the epoxy resin
0
5
10
15
20
25
30
35
40
45
50
0.1 1 10 100 1000
Visc
osity
[Pas
]
Shear rate [s-1]
-42.1
10.2
-49.5
35.6
-50
-25
0
25
50
∆Vi
scos
ity [%
]StandardReference, Xylene dominantReference OTIsobutanol richBenzyl alcohol richTHIXATROL® PM 8058Isobutanol richBenzyl alcohol rich
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THIXATROL® PM 8058 vs Reference SOLVENT INFLUENCE ON VISCOELASTICITY
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Rheology curves determined using the Anton-Paar MCR 301 rheometer, equipped with PP 50 measuring geometry at a temperature of 23°C and a gap width of 1 mm;High build epoxy coating equipped with varying solvent compositions; 0.5% rheology modifier activated at 66°C; Solvent ratio calculated only including parts of the component A! Xylene content includes also the solvent part of the epoxy resin
0
1
2
3
4
5
6
7
2 3 4
Dam
ping
fact
or /
tan
delta
Time [min]
Strain = 1.0%Ш = 10 rad/s
Shea
r rat
e =
1000
s-1
tan
delta
< 1
=
G` >
G“
tan
delta
> 1
= G
“ > G
`StandardReference, Xylene richReference OTIsobutanol richBenzyl alcohol richTHIXATROL® PM 8058Isobutanol richBenzyl alcohol rich
5.06.8
16.7
3.65.3
02468
1012141618
Tan
delta
afte
r she
ar
Incr
easi
n flu
id c
hara
cter
160
>220 >220
70
110
020406080
100120140160180200220
Rec
over
y tim
e fo
r ta
n de
lta 1
[s]
Decr
easi
ng re
cove
ry ti
me
Recovery time
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THIXATROL® PM 8058 vs Reference SAG CONTROL
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Reference OT200 µm
300 µm
450 µm
500 µm
550 µm
550 µm
THIXATROL® PM 8058
250 µm
500 µm
900 µm
1300 µm
1300 µm
150 µm
300 µm
400 µm
600 µm
700 µm
750 µm
150 µm
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THIXATROL® PM 8058 vs Reference ACTIVATION WINDOW IN XYLENE DOMINATED SYSTEM
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0
20
40
60
80
100
120
35 40 45 50 55 60 65 70 75
Visc
osity
at 0
.1 s
-1[P
as]
Activation temperature [°C]
THIXATROL® PM 8058
Conventional diamide
62.9% Xylene
20.9%16.3%
Rheology data determined using the Anton-Paar MCR 301 rheometer, equipped with PP 50 measuring geometry at a temperature of 23°C and a gap width of 1 mm; High build epoxy coating with a standard, Xylene rich solvent composition; 0.5% rheology modifier activated at various temperature; the individual activation time was held constant for 30 minutes at high shear for minutes
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THIXATROL® PM 8058ACTIVATION TEMPERATURE AND TIME IN XYLENE DOMINATED SYSTEM
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62.9% Xylene
20.9%16.3%
Rheology data determined using the Anton-Paar MCR 301 rheometer, equipped with PP 50 measuring geometry at a temperature of 23°C and a gap width of 1 mm; High build epoxy coating with a standard, Xylene rich solvent composition; 0.5% rheology modifier activated at various temperature; the individual activation time was held constant at high shear for minutes
40
60
80
100
120
140
160
35 45 55 65 75
Visc
osity
[Pas
]
Activation temperature [°C]
Viscosity at 0.1 s-1
30 minutes activation45 minutes activation
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THIXATROL® PM 8058 vs Reference STORAGE STABILITY IN XYLENE DOMINATED SYSTEM
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62.9% Xylene
20.9%16.3%
Rheology data determined using the Anton-Paar MCR 301 rheometer, equipped with PP 50 measuring geometry at a temperature of 23°C and a gap width of 1 mm; High build epoxy coating with a standard, Xylene rich solvent composition; 0.5% rheology modifier activated at various temperature; the individual activation time was held constant at high shear for minutes; Graph displays the viscosity and sag differences between 30 minutes and 45 minutes of dispersing time at the relevant activation temperature
131.
9
4.3
-7.6 -7.5 -7.8
60
0 0 0 0
-40
-20
0
20
40
60
80
100
120
140
160
Ʌ Vi
scos
ity/s
ag a
fter 4
wee
ks/5
0°C
[%]
35°C 45°C 55°C 65°C 75°CActivations temperature [°C]
Ʌ Viscosity at 0.1 s-1
Ʌ Sag control
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THIXATROL® PM 8058 vs Competitors
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0
200
400
600
800
1000
1200
1400
1600
1800
2000
0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1 1.05 1.1
Sag
as o
f lay
er th
ickn
ess
[µm
]
Concentration rheology modifier [%]Sag control determined by blade application; The longer the bar the better the performance; High build epoxy coating with a standard, Xylene rich solvent composition; rheology modifier activated at 66% and a shear of 12 m/s applied by cowles/tooth bladed dissolver
Concentration reference 1%
THIXATROL PM 8058
Reference 1 ~ 0.735%
Reference 2 ~ 0.6%
Reference 3Reference 4Reference 5
~ 0.45%
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Recommended processing
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Grind Process
Speed 16 m/s
Time [min]
Tem
pera
tur[
min
]
Addition of organicthixotrope at 16 m/s
Addition of all raw materials
66°C
Grinding / Activation processca. 28 – 32 min
„Lab Screening“ Process
Speed 12 m/s
Time [min]
Addition organic thixotropes at 12 m/s
Addition of all raw materials
Grinding Processca. 15 min
Grinding Processca. 30 min
50°C
Tem
pera
tur[
min
]
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Conclusion
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Conclusion
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• THIXATROL® PM 8058 provides high performance• Proven in 2 C Epoxy system
• Includes variation in solid content and different formula ingredients
• THIXATROL® PM 8058 provides a better compatibility when formulation contains high level of various alcohols (Iso-Butanol, n-Butanol or Benzylalcohol)
• Performance is more stable
• Improved paint storage stability at 50 °C
• THIXATROL® PM 8058 provides a broad activation window from 45 – 75 °C• Offers greater flexibility in paint production
• Lower temperatures= energy savings
• Cost savings when replacing competition due to the higher effeciency
• Lower loading level has a less pronounced influence on secondary paint properties (e.g.adhesion)
• 82% based on renewable raw materials for sustainable formulations
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Contact details
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Udo SchonhoffTechnical Sales Manager EMEATel +49 (0) 162-101 37 [email protected]
Ana SanchezSales Manager Tel +34 616 9909 [email protected]
For immediate technical assistance:[email protected]; [email protected]