150 years Discover more performance with new crosslinker chemistryLarotact® 150 for high-class coatings
150 years
Daniel FlojharEuropean Coatings Show 2015
150 years
Table of contents
Larotact® 150 at a glance
Use in 1K stoving enamels
Usage and performance highlights
Conclusion
® = Registered trademark of the BASF Group 2
150 years
Larotact 150 at a glance
(TACT = Trisalkoxycarbamatotriazin)
Is a low molecular mass crosslinker for baking finishes that combines melamine and urethane chemistry.
Due to the new REACH classification of formaldehyde, Larotact could compensate performance losses of reducing the amino resin component to match the formaldehyde limit of the formulation.
As a result, it supports coatings formulators to produce label-free coatings.
N N N
O
R1
R1
R1
O
HO
O N
O O
NH
N
H
R1=Methyl, Butyl
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Larotact 150 at a glance
Appearance No color to slightly yellow Clear to slightly turbid
Supply specification
Non volatile matter, DIN EN ISO 3251, 2 h, 105 °C 48-52 % in n-Butanol
Viscosity at 23 °C, DIN EN ISO 3219, annex A, shear rate D 25 s-1
10-50 mPa*s
pH value 3-6
Platin-cobald (Hazen) color number < 50Compatibility Soluble in alcohols, esters, aromatic hydrocarbons and glycol ethers,
it is not miscible with water
Compatible with a wide variety of alkyd resins, polyesters, acrylic resins and epoxy resins
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Larotact 150 in 1K stoving enamels
Increases surface hardness Excellent elasticity behavior Increases network density
for improved chemical resistances High weather resistance High gloss and good leveling
of coating surface appearance No discoloring at all Non reactive at storage conditions
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Usage and specific performance highlights
1K Amino resin Combined with melamine resins Typical ratio: 1-15 % Larotact on total
formulation
Improved performances Higher hardness Higher reactivity Better chemical resistances Easy mixable
Use only in temperature cured application systems to activate Larotact as crosslinker
Best use in OH-functional binder systems
Best use in solvent-based coatings
!
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Usage and specific performance highlights
Use only in temperature cured application systems to activate Larotact as crosslinker
Best use in OH-functional binder systems
Best use in solvent-based coatings
!1K stand-alone Stoichiometric use of Larotact to OH-Polyol NCO equivalents:
16 % (32 % of TACT pure)Well-defined crosslinking mechanism Tailor made polyols needed
High hardness High reactivity No formaldehyde content
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150 years
Usage and specific performance highlights
Use only in temperature cured application systems to activate Larotact as crosslinker
Best use in OH-functional binder systems
Best use in solvent-based coatings
!2K Polyurethane 5-10 % in Component A BuOH could partly react with NCO
hardener
Increased hardness with no loss on viscosity
Improved appearance, due to highreflective index
Better weather resistance
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Improved hardness and resistance of clear coat formulated with TACT
Clear coat based on Joncryl® 902 7:3 Luwipal® 018 and 10 % Larotact 150 on binder total (solids/solids)
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AmtecKistler
Sulfuric acidresistance
Pankreatinresistance
Surface hardness
Tree resin resistance
NaOHresistance
Scratch resistance
Inside1 Very good – 2 Good – 3 OK – 4 Limit – 5 Not OK – 6 BadOutside
ReferenceReference + TACT
® = Registered trademark of the BASF Group 9
150 years
Please get in touchYou are highly welcome at our booth No. 523, hall 7a
150 years
Daniel FlojharTechnical [email protected]
150 years
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