Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- CASE Ingredients Functions
- Technologies
- Product Families
Features & Benefits
- CASE Ingredients Features
Applications & Uses
- Applications
- Cure Method
- Coating Type
- Ink & Toner Type
- Uses
In combination with aliphatic polyisocyanates for air- and stove-drying two-component coatings
for industrial coatings with high flexiblility, adhesion and weathering resistance.- Properties and Fields of use
SYNTHALAT-A 141 HS is used primarily in combination with aliphatic polyisocyanates for airand
stove-drying coatings for metals and plastics. These types of 2-component coatings should
be used preferably wherever full-bodied coatings are required and environmentally safer
systems are to be introduced.
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Viscosity | 800-1.400 | mPas | AV-F-V005 |
| Color Value (Gardner) | Max. 2 | - | AV-F-F007 |
| Density | 1.04 | g/ml | AV-F-0D001 |
| Flash point | approx. 39 | °C | AV-F-f006 |
| Hydroxyl Content | 4.2 | % | Relative to NVC |
| Hydroxyl Content | 130-140 | % | Relative to NVC |
| Non Volatile Content | 70 | w % | AV-F-F003 |
Technical Details & Test Data
- Film Properties
In combination with aliphatic polyisocyanates like „Desmodur N“ non-yellowing coatings are
obtained that have excellent weathering resistance and gloss retention. These types of films
are characterized by a high scratch and abrasion resistance as well as a good resistance to
solvents. They are also distinguished by good water resistance and good resistance to water
and corrosive chemicals.- Pigmentation
SYNTHALAT-A 141 HS has a high pigment bindig and a good pigment wetting. All neutral
pigments and fillers can be used for pigmentation. Basic pigments and pigments containing
soluble metallic compounds may exert a catalytic effect on curing and shorten the pot life of
finished mixed baches.- Catalysis
To accelerate drying, organomettallic compounds or tertiary amines can be added. In most
cases addition of appr. 0.3% diethanolamine (soldid) is adequate.- Mixing ratio with poly-isocyanates
Assuming equivalent reaction of the reactive groups (NCO:OH = 1:1), the following formula
applies for calculation of the amount of polyisocyanate to be added (relative to 100 parts by
weight of SYNTHALAT-A 141 HS, solid):
42 X 100 X 4,2
17 X NCO %
42 = molecular weight of the NCO group
17 = molecular weight of the OH group
4,2 = hydroxyl content of SYNTHALAT-A 141 HS in % relative to non-vol.
components
The best results are obtained with a mixing ratio of 100 parts by weight of SYNTHALAT-A 141
HS (form in which delivered) with 44 parts by weight of „Desmodur N 75%“. An undercuring or
overcuring of up to 20% has only little influence on the film properties compared with an
equivalent reaction (NCO: OH = 1:1).
Packaging & Availability
- Supplied AS
70% in shellsol A/butyl acetate (2:1)