This
resin exhibits very fast cure
response, excellent flow properties,
good film hardness and resistance
properties, also low temperature
cure, flexibility, alkali resistance,
adhesion properties too.
MELCROSS-23
resin is soluble in Alcohols,
Ketones, Esters and Aromatic
hydrocarbons completely but
limited in Aliphatic hydrocarbons,
insoluble in water.
This
resin has good compatibility
with Alkyd resins, Polyester
resins, Acrylic resins, but
limited in epoxy resins for
the use of Automotive, General
industrial and metal decorating
coatings.
Typical
properties
Appearance |
|
Clear,viscous
liquid |
Non-volatile |
Wt.% |
56-60 |
Color,
Gardner1963 |
|
Max.1 |
Viscosity,
cone/plate |
cps |
1000-1800 |
Specific
gravity |
25∑C |
o.99-1.03 |
Acid
number,mgKOH/g |
value |
Max.
3 |
MST |
|
300-800% |
Application
Automobil
paint formulations. General
industrial baking enamels.
Can
and coil coating paints.
Introduction
MELCROSS-23
Crosslinking agent is
a commercial grade of Iso butylated
melamine formaldehyde resin
with a medium degree of alkylation,
a medium methylol content, low
imino functionality,
medium molecular weight
and viscosity.
MELCROSS-23 provides
very fast cure response, excellent
flow, flexibility, alkali resistance,
adhesion properties at general
industrial stoving applications.
MELCROSS-23 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 reactivity
and a high tendency for self-
condensation in a range of basic
polymers, providing films with
very good hardness, gloss, chemical
resistance and exterior durability.
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 primary alcohols or 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-23
as your request. MSDS of
MELCROSS-23
Storage
If MELCROSS-23 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 offered solely
for our consideration, investigation
and verification.
Before using any product,
read its label. |