This resin shows
rapid cure combined with very
good enamel package stability,
limited compatibility with acrylic
resins.
MELCROEE-22
resin is soluble in Alcohols,
Ketones, Esters, and Aromatic
hydrocarbons completely but
limittled in Aliphatic hydrocarbons,
insoluble in water.
This
resin has good compatibility
with Alkyd resins
and
Polyester resins for
a wide range of general industrial
stoving finishes like metal
decorating, can and coil coating
formulations.
Typical
properties
Appearance |
|
Clear,viscous
liquid |
Non-volatile |
Wt.% |
56-60 |
Color,
Gardner1963 |
|
Max.1 |
Viscosity,
cone/Plate |
cps |
600-1000 |
Specific
gravity |
25∑C |
0.98-1.10 |
Acid
number,mgKOH/g |
value |
Max.3 |
Methanol
tolerance |
|
220% |
M.S.T |
|
300-800% |
Application
General
industrial baking enamels.
Can
and coil coating paints.
Acid
curing wood coating varnishes.
Introduction
MELCROSS-22 Crosslinking
agent is a commercial grade
of normal butylated melamine
formaldehyde resin with a medium
degree of alkylation, a medium
methylol content, low imino
functionality , a relatively
low to medium molecular weight
and viscosity.
MELCROSS-22
provides very good film
hardness, adhesion, gloss, chemical
resistance, water resistance,
better intercoat adhesion properties.
MELCROSS-22 melamine
resin is a
usefull crosslinking
polymer for the other polymer
resins which containing hydroxyl,
amide and to some extent, carboxyl
functional groups, such as alkyd,
polyester or acrylic resins.
And has a high tendency
for self condensation in a range
of backbone polymers , providing
films with very good flow, gloss
and adhesion properties.
A low acid number in
an alkyd or acrylic resin is
sufficient. The cure reaction
can be additionally catalyzed
with weak organic or inorganic
acids such as maleic, citric,
phosphoric, or alkyl phosphoric
acids, low levels of para toluene
sulfonic acid catalyst.
Acid catalyzed coatings
may be cured as low as 110-150∑C
for 15-20 minutes.
To control the stability,
you can use tertiary amins for
neutralization and PH adjustment.
SAFETY
General
Attention must be paid
to the normal precautions for
handling chemicals and to the
measures prescript in the local
health regulations.
The work place must be
well ventilated, skin care measures
should be adapted and safety
google should be worn.
Safety
data sheet
P&ID Co.,LTD shall
provide MSDS associated with
MELCROSS-22
as your request. MSDS of
MELCROSS-22
Storage
If MELCROSS-22 is kept
in tightly closed drums or in
storage tanks in the cool place,
its shelf life is 18 months.
Remark
This information is given
without any warranty or representation.
We do not assume any legal responsibility
for same, nor do we give permission,
inducement, or recommendation
to practice any patented invention
without a license.
It is offerd solely for
our consideration, investigation
and verification.
Before using any product,
read its label. |