Carboxyl-Modified Vinyl Chloride/Vinyl Acetate Copolymers VMA
Carboxyl-Modified Vinyl Chloride/Vinyl Acetate Copolymers VMA
Carboxyl-Modified Vinyl Chloride/Vinyl Acetate Terpolymers
Ink Raw Material Vinyl Chloride Copolymer Resin,Vinyl Acetate
Grade VMA: It is white powder,ketone soluble with colorless,transparent solution, and because of the carboxyl functional group, it has excellent adhesion on metal, especially on aluminum foil, the resin foil also has a good adhesion on PVC, ABS, paper, textiles, beton, etc. Moreover, it offers a desirable balance of chemical resistance, solubility, diaphaneity, film strength, and thermoplasticity. And it has excellent interbedded adhesion.
VMA Vinyl Resin Quality standard (XHQB-6)
|
Item |
Index |
Test method |
|
|
1 |
Appearance |
White powder |
By visual |
|
2 |
Whiteness |
≥80 |
GB2913-82 |
|
3 |
Composition % by Wt |
Vinyl Chloride 81±1% |
GB/T7139-2002 |
|
Vinyl Acetate 17±1% |
ISO1159-1978 |
||
|
Maleic Acid 2±0.2% |
|||
|
4 |
Reactive Functionality (Carboxyl %) |
2±0.2% |
|
|
5 |
K Value |
32-36 |
GB/T 3401-2007 |
|
6 |
Viscosity No. ml/g |
30-34 |
GB/T 3401-2007 |
|
7 |
Glass Transition Temp℃ |
About 70 |
GB11998-89 |
|
8 |
Average Molecular Wt |
About 15000 |
Calculated by the Viscosity No. |
|
9 |
% by wt, through 60 mesh |
100% |
GB/T6003.1 |
|
10 |
Apparent density (g/ml) |
≥0.5 |
GB20022-2005 |
|
11 |
Volatilization (%) |
≤1% |
GB/T2914-1999 |
|
12 |
Impurity Particle No. /100g |
≤20 |
GB9348-88 |
|
13 |
25% resin in MEK/Toluene(50/50) |
Colorless and Transparent or yellowish |
By visual |
Application:
VMA grade yields the good balance of solubility and viscosity properties needed for high-build, air-dry maintenance finishes,and it is often used to make coatings and adhesives applications where higher solids are desirable. It can be used in air-dry finishes, such as maintenance,marine,and metal coatings, interbedded adhesive,aluminum foli varnish,UV surface treatment,UV primer,thermal transfer adhesive, shoe adhesive, ink-jet and metal inks,etc.
Package, storage and transportation:
* In kraft bag, lined with pp bags of 25kgs net, with PE inner bag.
* 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.
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