The role of povidone in ink Povidone, also known as polyvinylpyrrolidone (PVP), plays a significant role in various ink formulations. Its unique properties make it a valuable additive in the ink industry. Here are some key roles of povidone in ink: 1. Dispersing Agent: Povidone is often used as a dispersing agent or a stabilizer in inks. It helps to disperse pigments, dyes, and other insoluble components evenly throughout the ink, preventing settling or agglomeration. This ensures uniform color distribution and prevents clogging or blockage in the printing process. 2. Film Former: Povidone acts as a film-forming agent in inks, contributing to the adhesion and durability of the printed image. It forms a transparent or translucent film on the substrate, enhancing the ink’s resistance to smudging, rubbing, or fading. 3. Viscosity Modifier: Povidone can modify the viscosity of the ink, influencing its flow characteristics and printability. It helps to control…

With the development of pharmaceutical preparation technology, POvidone has been used more and more widely as pharmaceutical excipients of non-ionic water-soluble polymer compounds. However, different preparations need to be selected for different types of POvidone, and there are many technical details in its application that require the user’s special attention. According to the actual situation of first-line production, it is divided into…… from different angles as binder, coprecipitant, co-solvent, etc. According to the excellent physiological compatibility of POvidone series of pharmaceutical excipients is its inherent and unique product properties, to now, it has become the three main synthetic pharmaceutical excipients together with cellulose derivatives and acrylic compounds. Povidone series can be a variety of models according to different K values, of which the most widely used varieties are K15, K30 and K90. The Chinese Pharmacopoeia only lists the quality standard of K30, while the British and American pharmacopoeia lists all…

This product is an aqueous synthetic polymer, a linear homopolymer of n-vinylpyrrolidone, whose molecular formula is (C6H9NO)n, where n represents the average number of N-vinylpyrrolidone chains; Povidone K30, with an average molecular weight of 38000, is the most commonly used excipient. Povidone K15, K25 and K90 were followed by POvidone K15, K25 and K90 with average molecular weight of 7700, 25000 and 630000, respectively.Chemical structure and namingMolecular formula (C6H9NO)nMolecular weight: Mw=(111.1)nChemical name: Polyvidone; Polyvidonum; PolyvinylpyrrolidoneCTFA/INCI: PVPCAS Number: [9003-39-8] Product characteristicsThis product is white to milky amorphous powder, its bulk density is 0.4~0.6; Odorless or slightly odorless; Tasteless; Hygroscopicity, when the relative temperature is 75%, the saturated water absorption rate is about 40%; Soluble in water, ethanol, isopropyl alcohol, glycerol or chloroform, insoluble in acetone, ether and hydrocarbon solvents.This product can be complexed with many substances, especially compounds containing active hydrogen atoms or metal carbonyl compounds, to form solid complexes, so…