PVP K-90D

Polyvinylpyrrolidone

International Specialty Products

乙烯基 >> 共聚物 Vinyl >> Polyvinylpyrrolidone and Vinylpyrrolidone Copolymers 油墨 Inks INKS >> 数字墨 (如喷墨) INKS >> Digital inks (eg. Ink jet) 其它工业 >> 纸涂层 Other industry >> Paper coatings Soluble in water and most polar solvents Insoluble in esters, ethers, ketones and hydrocarbons PVP, high polarity, dispersancy, hydrophilicity, adhesion, cohesivity and high Tg Polyvinylpyrrolidone is a hygroscopic, amorphous polymer supplied as a white, free-flowing powder, or in clear aqueous solution. Polyvinylpyrrolidone can be plasticized with water and most common organic plasticizers. It is considered to be physiologically inert. Applications take advantage of one or more properties inherent in the polymer, typically due to the lactam ring: High Polarity and the resultant propensity to form complexes with hydrogen donors, such as phenols and carboxylic acids, as well as anionic dyes and inorganic salts; Dispersancy, where components in a mixture are uniformly distributed through the use of Polyvinylpyrrolidone; Hydrophilicity, where the substantial water solubility of Polyvinylpyrrolidone is its dominant feature and frequently a factor along with other properties valuable to numerous applications; Adhesion, taking advantage of the higher molecular weight Polyvinylpyrrolidones formulating in aqueous media, then evaporating sufficient water to generate a solid product for the desired application; and Cohesivity, where cohesive strength is achieved through a variety of dry blending and granulation techniques. Polyvinylpyrrolidone is cross-linkable to a water insoluble, swellable material either in the course of vinylpyrrolidone polymerization, by addition of an appropriate multifunctional comonomer, or by post-reaction; typically through hydrogen abstraction chemistry. adhesive amphiphilic low order of toxicity Coatings/paper, printing & inks Coatings/digital printing and imaging Hygroscopic, amorphous polyvinylpyrrolidone. Used in coatings for paper, printing inks and digital printing and imaging. Offers high polarity, dispersancy, hydrophilicity, adhesion, cohesivity and high glass transition temperature. Can be plasticized with water and most common organic plasticizers. Gives low order of toxicity.