White Powder Carboxyl-modified Vinyl Chloride/Vinyl Acetate
copolymers Used For Heat Sealing Packaging Coatings
Carboxyl-modified Vinyl Chloride/Vinyl Acetate copolymers is white
powder,has excellent adhesion on metal,
especially on aluminum foil, the resin foil also has a good
adhesion on PVC ,ABS, paper,textiles,beton,etc.
Specification
| ITEM | SPECIFICATION |
| Appearance | White powder |
| Whiteness | ≥ 80 |
| Composition | Vinyl chloride 85±1%
Vinyl Acetate 13±1%
Maleic acid 1±0.2%
Maleic anhydride 1±0.1% |
| Reactive functionality(Carboxyl %) | 2±0.2% |
| K value | 45-47 |
| Viscosity No. ml/g | 50-54 |
| Glass Transition Temp ℃ | About 74 |
Average molecular wt | About 27000 |
% by wt, through 60 mesh | 100% |
Apparent density(g/ml) | 0.5 min |
Volatilization (%) | 1% max |
Impurity particle No/100g | 20 max |
| 25% resin in MEK/Toluene(50/50) | Colorless and transparent or yellowish |
Application
It is used primarily for air-dry finishes, such as maintenance,
marine and metal coatings, aluminum foil varnish, cans sealed
paint, shoe adhesive ,floor paint, cement paint, silk screen
printing and transfer ink.
And it often mixes with DR-52 grade, which
is used in the production of heat sealing packaging coatings, can
effectively reduce the heat sealing temperature, raise the heat
sealing strength.
It also can be used to produce the VC sealing plastic package,
Electro-chemical aluminum paint, thermal transfer adhesive.
Storage
Store in a dry and ventilated place, do not place in open-air,
avoid storage in direct sunlight and caution against wet.
Must be transported in clean vehicle with awning and keep away from
moisture.
It is NOT hazardous article, and the shelf life is one year from
the production date.
Package
In kraft bag, lined with pp bags of 25kgs net, with PE inner bag.
