pvp chemical raw materials

It is a non-ionic polymer with the characteristics of N-vinylamide polymer and is one of the most widely studied fine chemical varieties. At present, it has developed into non-ionic, cationic, anion 3 categories, industrial grade, pharmaceutical grade, food grade 3 specifications, relative molecular weight from thousands to more than one million homopolymer, copolymer and crosslinked polymer series products, and with its excellent unique properties have been widely used.

fractionation
PVP is divided into four stages according to its average molecular weight size, usually represented by the K value, different K values represent the corresponding average molecular weight range of PVP. The K value is actually an eigenvalue related to the relative viscosity of PVP aqueous solution, and the viscosity is a physical quantity related to the molecular weight of the polymer, so the average molecular weight of PVP can be characterized by the K value. Generally speaking, the greater the K value, the greater the viscosity and the stronger the adhesion. Polyvinylpyrrolidone K30 produced by Shanghai Haoru Industrial Development Co., Ltd. is white or milky powder or granular in appearance and packed in 25 kg/carton.
Because PVP has excellent surface activity, film forming properties, no irritation to skin, no allergic reaction and other characteristics, it has broad application prospects in the daily chemical industry, especially in cosmetics, skin care products, hair care products, washing products and so on.
The role of PVP in other cosmetics is mainly to stabilize dispersion systems such as emulsion and suspension, and the role of moisturizing film formation in skin care products, such as the role of PVP in sunscreen, not only moisturizes, but more importantly, separates the skin from the sun by forming a film, and plays a role in protecting the skin. In addition, PVP has special uses in other aspects, such as pigment stabilizer, deodorant, deodorant, toothpaste, shaving cream and many other cosmetics.
The application of PVP in washing products
The excellent surface activity of PVP makes it also have a good role in some washing products. Using PVPP crosslinked polymer PVPP as the ingredient of toothpaste can not only remove stains and prevent stains, but also have anti-inflammatory and analgesic effects.
PVP acrylic copolymer applied in the bath not only has the role of dispersion stabilizer, detergent, but also has the function of sterilization and disinfection, especially as a medicated soap, soap ingredients used in the summer has a good effect, PVP both oil and water wet so that it in the cleaning of clothing, especially in the hotel, restaurant cleaning with tablecloth cleaning agent has a special effect. Not only the washing time is short, the washed tablecloth is white and soft, there is a faint scent, and it has the effect of sterilization and disinfection.
In summary, the role of PVP in daily chemical products is mainly manifested in the following aspects:
• Dispersion stability function, common skin care products, creams and other cosmetics are mostly lotions and suspensions, to make it can be placed for a long time without precipitation deterioration, so that it is dispersed into a uniform system and has a certain stability time is very important, PVP in cosmetics an important function is the dispersion stability function.
• Decontamination washing function, PVP and its copolymer due to its specific molecular structure, on the one hand has lipophilic, can remove clothing, hair and skin on the oil, sweat stains, etc., on the other hand has good hydrophilicity, so it is easy to wash clothes and skin stains.
• Film moisturizing function, which is the most common function of PVP in cosmetics, widely used in hair care products, skin care products, etc.
• Sterilization, disinfection function, mainly used for washing products.
• Application of PVP in cosmetics:
The research on the application of PVP in cosmetics began in the 1960s, and now it has been widely used in hair care products, skin care products, jewelry and other aspects, among which the application of hair care products is the most prominent. PVP is an excellent surfactant, adding PVP to shampoo can make the foam stable. Due to its physiological compatibility, it will not cause irritation and allergic reaction to the skin, long-term use will not damage the hair, and the hair is smooth and shiny after washing, easy to comb. Hair gels and mousses containing PVP have long-lasting appearance and good luster, and because PVP has certain water absorption, hair is smooth and smooth without appearing dry. PVP for hair care products can be used through the selection and ratio of copolymer monomer types. PVP regulates its water absorption and is suitable for dry, neutral and oily hair as a conditioner, with unique advantages. The main component of hair is protein, and the molecular structure of PVP is also similar to protein, so it can be used as a supplement to hair nutrients. Long-term use of shampoos and hair products containing PVP can make hair dark and shiny.