PVPK30 is a high polymer with K value range of 28-32 in the polyethylpyrrolidone (POvidone for short) series, with good water solubility and soluble in various organic solvents. PVPP is a cross-linked polyvinylpyrrolidone, a cross-linked polymer of polyvinylpyrrolidone that is almost insoluble in any solvent. PVP40, short for PVPK40, is a polymeric polymer with K value of about 40 in the polyethylene pyrrolidone (POvidone) series, and the properties of PVPK30 are basically the same. But the K value increases, the molecular weight of the polymer also increases, and the viscosity of the solution increases correspondingly. Polyvinylpyrrolidone is PVP, cross-linked polyvinylpyrrolidone is PVPP, as the name suggests, PVPP is the cross-linked state of PVP, with disintegration, PVP only strong hygroscopicity. What is the difference between pvp40 and pvpk30 and pvpp 1. Different meanings pvp40: It is a high polymer with K value of about 40 in the polyethylene pyrrolidone series. pvp-k30…