Hangzhou Rainbow Import & Export Co., Ltd. is one of the leading manufacturers and suppliers of polyvinylpyrrolidone in China. With abundant experience, we warmly welcome you to buy customized polyvinylpyrrolidone from our factory. If you have any enquiry about free sample, please feel free to email us.

Polyvinylpyrrolidone (PVP), also known as polyvinylpyrrolidone, is a water-soluble polymer compound formed by the polymerization of N-vinylpyrrolidone monomers. It appears as a white powder.

Core characteristics: strong water solubility, can be quickly dissolved in cold water; good chemical stability, adapt to pH 3.0–7.0 environment; divided into K value series according to different polymerization degrees, corresponding to different viscosities and functions.

Preparation process: mainly produced by solution polymerization or suspension polymerization process, strictly controlling reaction parameters to ensure that product quality meets the pharmacopoeias and industry standards of various countries.

Application fields: widely used in medicine (binder, solubilizers), cosmetics (thickening, film formation), food (beverage clarification), coatings and inks (improved dispersibility) and water treatment (auxiliary flocculation) and other fields.

Quality assurance: production follows the ISO quality management system, the finished product undergoes multiple tests, and provides detailed quality inspection reports to ensure batch stability and safety.

FAQ

Q: How is the quality stability of Polyvinylpyrrolidone (PVP)? 
A: We use a fully automated polymerization production line and strictly implement the ISO 9001 quality management system. From the purchase of raw material N-vinylpyrrolidone to the delivery of finished products, we go through 12 quality inspection processes. Each batch of products provides a test report that meets the pharmacopoeia standards such as USP, EP, and ChP to ensure that the K value deviation is ≤±0.5 and the impurity content is 30% lower than the industry average.

Q: Compared with other suppliers, where is the price advantage? 
A: Relying on the advantages of large-scale production (annual production capacity exceeds 5,000 tons) and self-developed polymerization technology, we have achieved a 25% reduction in energy consumption and an increase in raw material utilization rate to 98%. Directly connecting with raw material manufacturers to reduce intermediate links, the price of conventional models is 15%-20% lower than the market price, and bulk purchases can enjoy a step discount.

Q: What is the delivery cycle and minimum order quantity?
A: Standard models (such as K15, K30, K90) are in sufficient stock and can be shipped within 48 hours; customized products (special K value or modification requirements) can be delivered in as fast as 7 working days. The minimum order quantity is only 100 kg, mixed batch purchases are supported, and new customers will receive an additional 10% trial pack for their first order.

Q: What is the technical support for the product in different application scenarios?
A: Equipped with a technical team led by 5 doctors, we provide customized solutions for the pharmaceutical, cosmetics, food and other industries. For example, the pharmaceutical field can assist in optimizing the formulation of sustained-release preparations, and the cosmetics industry can provide film-forming performance improvement solutions. We respond to technical consultations within 24 hours and provide on-site debugging services when necessary.

Q: What are the requirements for packaging and storage? 
A: Double-layer packaging is used, with the inner layer being a food-grade PE moisture-proof bag and the outer layer being a 50 kg cardboard barrel. 25 kg carton packaging can be customized for special needs. The storage conditions are a cool and dry environment (temperature ≤ 30°C, humidity ≤ 65%), the shelf life is 2 years, and the product label must be clearly marked with the MSDS safety data sheet.

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