Sinfeng was established in 1998 and has grown into a major supplier of vinyl chloride-acetic acid vinyl series resins in China over the years. Currently, the chloroacrylate series resins are divided into three production processes: aqueous phase suspension method, emulsion method, and micro-suspension method. Among them, the suspension method and micro-suspension method have a production capacity of 18,000 tons per year, while the emulsion method has a production capacity of 5,000 tons per year.
All products of Sinfeng have been tested by professional third-party testing institutions and have successfully passed the pre-registration and formal registration of EU Reach, EU SVHC, US FDA, RoHS, polycyclic aromatic hydrocarbons, phthalic acid salts, and ISO9001, etc.
MVAG--Hydroxyl-Modified Vinyl Chloride/Vinyl Acetate Copolymers
Grade MVAG: It is white or slightly yellow powder,ester soluble with colorless and transparent solution,and it has excellent solvent release,film-forming,dispersibility,color contrast property and wettability,moreover, it has excellent dispersibility for those difficult-to-disperse pigments (like blue and black) and has very good adhesive force on PET.
| No. | Item | Index | Test method |
| 1 | Appearance | White or slightly yellow powder | By visual |
| 2 | Whiteness | ≥80 | GB2913-82 |
| 3 | Composition % by Wt | Vinyl Chloride 90±1% | GB/T7139-2002 |
| Vinyl Acetate 3±1% | ISO1159-1978 | ||
| Vinyl Alcohol 7±0.5% | |||
| 4 | Reactive Functionality (Hydroxyl %) | 2.3% | |
| 5 | Hydroxyl Value | 70-76 | ISO2554-1974 |
| 6 | K Value | About 46 | GB/T 3401-2007 |
| 7 | Viscosity No. ml/g | 52-56 | GB/T 3401-2007 |
| 8 | Glass Transition Temp ℃ | About 79 | GB11998-89 |
| 9 | Average Molecular Wt | About 27000 | Calculated by the Viscosity No. |
| 10 | % by wt, through 60 mesh | 100% | GB/T6003.1 |
| 11 | Apparent density (g/ml) | ≥0.5 | GB20022-2005 |
| 12 | Volatilization (%) | ≤1% | GB/T2914-1999 |
| 13 | Impurity Particle No. /100g | ≤20 | GB9348-88 |
| 14 | 20% resin in EA or MEK | Colorless and Transparent or Yellowish |
By visual |
Application:
MVAG new grade is mainly used for application gravure plastics composite printing inks、PU inks、can sealed coatings、plastic coatings、magnetic tape and carbon tape adhesive、car refinishing paint etc.
