new stabaxol mtc presentation · 2016. 9. 9. · 9 conclusion title of presentation speaker place,...
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Stabaxol MTCA new carbodiimide
With reactivity as acid scavenger at room temperature
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Summary
Title of presentation ▪ Speaker ▪ Place, date … [ OPTIONAL ]
�The Stabaxol® product range is well known as highly efficient stabilizers for
hydrolysis protection of polyesters.
�Nevertheless they have limited access to some applications due to the fact
that Stabaxol requires processing at elevated temperatures.
�Some applications like adhesives or cold cast polyurethanes are processed
at room temperature and therefore cannot be stabilized with the conventional
Stabaxol® product range.
�The project aimed for stabilizers that are highly reactive at room
temperature and can be handled easily.
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New monomeric CDILiquid vs. Solid
Solid: Stabaxol I, I LF, I
powder
Stabaxol MTC: Liquid
(20 mPas / 25 °C)
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Application 1: Acid scavenger –Reactivity at room temperature
Title of presentation ▪ Speaker ▪ Place, date … [ OPTIONAL ]
Improved acid scavenger properties:•More effective acid scavenger at lower concentrations
•Reactivity at room temperature•Liquid substance and therefore easy to handle
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Application 2: Acid scavenger in ester-based lubricant oils
Effect of Stabaxol® MTC: Retention of the Total Acid Number
TAN stays < 0,1 mg KOH/g at very low concentrations of Stabaxol® MTC
Prevention of hydrolysis and prolonged lifetime of the lubricant
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Modified ASTM-D 2619 (96h)(Hydrolytic Stability “beverage bottle test")
ASTM D 2619(modified)
Rapeseed oil Rapeseed oil
+ 0,5 % SXL I
Rapeseed oil
+ 1 % SXL I
Rapeseed oil
+ 0,5 % SXL MTCNEW
TAN in oil (mg KOH/g)
0 h 0,10 0,08 0,07 0,05
TAN in oil (mg KOH/g)
96 h 0,19 0,1 0,08 0,02
TAN in oil (mg KOH/g)
168 h 0,32 0,3 0,10 0,07
TAN in oil (mg KOH/g)
312 h 1,01 0,8 0,07 0,05
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Application 3: Hydrolytic Stability of polyester based cold cast PU-Elastomer
Hydrolysis protection achieved:
Retention of the tensile strength with very low concentrations of Stabaxol® MTC
Limit of usability:
Tensile strength retention of 80 %
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Application 4: Hydrolytic stability in PU-based adhesives
Adhesive material destruction point ( ) retarded:
Extended lifetime and hydrolysis protection achieved
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Conclusion
Title of presentation ▪ Speaker ▪ Place, date … [ OPTIONAL ]
� Stabaxol® MTC provides the desired properties:
• Liquid at room temperature
• Reactivity at room temperature
• More effective acid scavenger at lower concentrations
• High carbodiimide content (17,5 %)
� Designed for target applications:
• As acid scavenger in ester-based lubricant oils
• As hydrolysis stabilizer in polyester based cold cast
PU-Elastomers
• As hydrolysis stabilizer in polyester based adhesives