|
Physical properties
Non-volatiles
after stoving 1h/100°C
Solvent and etherification alcohol
Specific gravity
Viscosity DIN CUP No 4 20°C
Colour
Acid value (mg KOH/gm)
n. Heptane tolerance (C7H16,E.
Merck quality)
Free formaldehyde
Appreance |
60
± 2
Isobutanol
0.99-1.01
550-850 second
water white
1.2-1.5
11-17 ml (**)
undetectable by sulphite
method
very clear |
|
Dilutability
MK 81-S
is readily dilutable with alcohols,
ketons, esters and aromatic
hydrocarbons.
Compatibilty
MK
81-S is completely compatible with
drying and non-drying short to
medium oil alkyds, short oil epoxy
esters, and most hydroxly, and
methylol acryl amide functional
acrylic resins.
|
Functionalty |
-N |
/ |
CH2OH |
isobutoxymethyl-methylol |
|
\ |
CH2OC4H9 |
Example
Typical stoving top coat formulation
based on MK81-S |
|
|
1 |
2 |
|
Alkydresin 1 (Worleekyd SM 400)(***)
60%
-
2 (Worleekyd C 628)
(***)
70%
Titanium dioxide (R-CR-2)
Bentone 38 10% in xylene
Ethyl glycol
Solvesso 100
MK 81-S
xylene
Isobutanol
|
50.00
gms
30.00
»
1.20
»
2.00
»
4.30
»
11.50
»
1.00
»
100.00 »
|
42.90 gms
30.00
»
1.20
»
2.00
»
4.30
»
11.50
»
7.10
»
1.00
»
100.00 »
|
|
Starting vizcosity
Vizcosity after 7.5 %addition of
xylene
Solids approx.
Binder / pigment approx
Alkyd / Melamine resin ratio
Baked at 10 minutes at 160°C.
Hardness (koenig) 1hr after stoving
Gloss 20°
1 hr Overbaked gloss
Yelloving (1-10)(****)
Flexibility (erichsen) at
26
Cross-cut adhesion
|
147
secs
60 secs
68%
1:0.8
8:2
82
65%
65%
3-4
6.9mm
Gt0
|
57 secs
-
127
67%
67%
0-1
7.1mm
Gt0-Gt1
|
|
(*)
Please refer to King Industries,
Science Rd Norwalk CT 06852, USA for
Nacure and Nacorr catalisysts.
(**) The minimum quantity of
solvent in cm3 tolerated by 5 gms of
resin solution.
(***) Worlee-Chemie GMBH
Soeller str. 12, Postfach 1365,
2058
Lauenburg /Elbe, Telex 2189621
(****) 1-best.
|
|
Information in publication is to the
best of our knowledge true and
accurate. However, since conditions
under which our products may be used
are beyond our control,
recommendations are made without
warranty or quarantee |
