• Carboxyl-Modified Vinyl Chloride/Vinyl Acetate Copolymers VMA
  • Carboxyl-Modified Vinyl Chloride/Vinyl Acetate Copolymers VMA

Carboxyl-Modified Vinyl Chloride/Vinyl Acetate Copolymers VMA

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Product Details

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)

No.ItemIndexTest method
1AppearanceWhite powderBy visual
2Whiteness≥80GB2913-82
3Composition % by WtVinyl Chloride 81±1%GB/T7139-2002
Vinyl Acetate 17±1%ISO1159-1978
Maleic Acid 2±0.2%
4Reactive Functionality (Carboxyl %)2±0.2%
5K Value32-36GB/T 3401-2007
6Viscosity No. ml/g30-34GB/T 3401-2007
7Glass Transition Temp ℃About 70GB11998-89
8Average Molecular WtAbout 15000Calculated by the Viscosity No.
9% by wt, through 60 mesh100%GB/T6003.1
10Apparent density (g/ml)≥0.5GB20022-2005
11Volatilization (%)≤1%GB/T2914-1999
12Impurity Particle No. /100g≤20GB9348-88
1325% resin in MEK/Toluene(50/50)Colorless and Transparent or yellowishBy 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.