SuZhou Direction Chemical Technology Co.,Ltd
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Vinyl Chloride-Vinyl Acetate Bipolymer Resin (DY-7)
| No. | Item | Index |
| 1 | Appearance | White powder |
| 2 | Whiteness | ≥80 |
| 3 | 50-54 | |
| 4 | K Value | 41-45 |
| 5 | (%,by Wt) | 13-15 |
|
6
| Volatilization (%) | ≤1 |
| 7 | Grain Size (through 60 mesh) | 100﹪ |
| 8 | Stacking density (g/ml) | ≥0.6 |
| 9 | Impurity Particle No. (grains/100g) | ≤20 |
| 10 | Solubility 25%(MEK: Toluene=1:1)solution | Colorless, Transparent, No insoluble matter |
| 11 | Countertype | CP430/VYHD |
DY-7 resin is mainly applied in strippable coating, inkjet inks, PVC ink, silk-screen printing ink, paper ink, electric cable material, pigment paste and flake for PU, PVC adhesive, inks and coatings possessing high gloss and high solid content etc.
For DY-7 type of bipolymer, ketone solvents are especially suited, such as ace-tone, MEK, nadone and isophorone. Ester solvents have lower solubility for DY-7 resin, such as methyl acetate, ethyl acetate and butyl acetate etc. Therefore, we need to heat the solution or add ketone solvents into the solution while DY-7 resin is dissolved in ester solvents. Chlorohydrocarbons, Nitro compound and alicyclic solvents, such as dichloroethane and diethylene oxide, also can dissolve DY-7 type of bipolymer, but these kinds of solvent are toxic, they are only used in special situation.
DY-7 type of bipolymer is miscible with other resins during the course of usage, such as other types of vinyl chloride vinyl acetate copolymer, PVC resins, perchloro-ethylene resin, ketone resins, chloroprene rubber, NBR, polyacrylate, epoxy resin, polyester and petroleum resin etc.
D) Packaging and Storage
DY-7 resin is usually packaged according to 25Kgs per bag, which is the craft paper-plastic composite bag lined with plastic film.
DY-7 resin should be stored in dry place away from sunlight.
Any queries on technology or quality assurance can be inquired to our company. Should DY-7 resin have been kept over the shelf time, it shouldn’t mean the resin is invalid, but the user has to test the relevant properties of DY-7 resin and its finished product before using it in bulk.