| Message: | Co-dimensional ketone
The copolymer is a water-soluble organic polymer, and is a linear copolymer of vinyl N- (NVP) and vinyl acetate (VA). (PVP/VA)
Nature:Since the structure of and NVP is the structure of and VA, it has the properties of both PVP and PVAC. Compared the nature of the above three products, polyvidone retained the good PVP [1] water solubility, adhesion and membrane, and than the PVP is relatively much lower water absorption and more broad solubility, better plasticity and stronger surface activity
Usage:As tablet and granule, the adhesive can be used wet, dry granulation and direct compression method to complete, in most cases the dosage of micro gross preparation of 2% - 5%, general is about 3%, concentration of adhesive generally 5 ~ 10%. According to the different materials and auxiliary materials, water or alcohol and other solvents can be used as solvent. When the direct compression method is used, the dosage is about 5%, which can be used as the auxiliary material, such as lactose, sorbitol, mannitol and microcrystalline cellulose, but it should pay attention to controlling the moisture content in the ingredients to maintain proper bonding. [2]
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