MELCROSS 22        

Commercial name

Application

MELCROSS 22
Normal Butylated
Melamine Resin

MELCROSS 22 is a  56-60% solids n-butylated melamine formaldehyde resin supplied in a solvent of xylene and normal butanol.

 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

 25C

 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 110-150C 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.