Sunvidone | Premium NVP & PVP Polymers Manufacturer

About Sunvidone

Hangzhou Rainbow Import & Export Co., Ltd., operating as Sunvidone, is a leading manufacturer of high-performance NVP and PVP polymers. Established in 1992 as Zhejiang Sunflower New Material Co., Ltd., our legacy began with Mr. Wu Jiaxiang, the chief expert of China's national R&D project for PVP, serving as general manager.

In 2002, we transitioned into a private enterprise, continuing our mission to develop and produce technical and cosmetic-grade PVP series products. Today, we operate GMP-certified production lines with annual capacities of 600 tons of low molecular weight Povidone (K12–K30), 800 tons of high molecular weight Povidone (K60–K120), 300 tons of stable Povidone Iodine, and 100 tons of Chondroitin Sulfated Sodium.

600+

Tons Annual Povidone (Low MW)

800+

Tons Annual Povidone (High MW)

Our Product Range

Discover our comprehensive portfolio of NVP and PVP-based polymers engineered for pharmaceutical, cosmetic, and industrial excellence.

PVP Iodine Pharmaceutical Raw Materials USP

High-purity PVP-I for medical disinfection and antiseptic formulations. Compliant with USP standards.

CAS: 25655-41-8
Packaging: 50KG or 200KG/drum
Application: Medical iodophor, dental clinics

Tablet Binder Copovidone CAS 25086-89-9

Medical-grade binder for pharmaceutical tablets ensuring optimal disintegration and binding performance.

CAS: 25086-89-9
Grade: Pharmaceutical
Use: Tablet formulation, dental impression materials

Povidone Iodine Solution 25655-41-8

Ready-to-use solution ideal for disinfectants, sprays, and medical applications requiring high stability.

CAS: 25655-41-8
Packaging: 50KG or 200KG/drum
Use: Disinfectant spray adhesion, reagent industry

Glue Stick Adhesive PVP K90 Solution

High-performance adhesive solution for glue sticks and hot melt applications with excellent bonding strength.

Type: PVP K90
Form: Solution (PVP + water)
Use: Glue sticks, enhanced bonding

Insoluble Polyvinylpyrrolidone

Cross-linked PVP used in cosmetic formulations, supercapacitor electrodes, and battery separator modification.

Also Known As: Crosslinked PVP
Applications: Cosmetics, electronics, industrial coatings

PVP/VA Series (SUNLYDONE® VA)

NVP-Vinyl Acetate copolymers offering superior film formation, adhesion, and compatibility in diverse formulations.

CAS: 25086-89-9
Series: VA64, VA73, etc.
Use: Hair styling, cosmetic films, industrial coatings

(PVP) K Series 9003-39-8

Polyvinylpyrrolidone homopolymers available in various molecular weights (K12 to K120) for tailored viscosity and binding.

CAS: 9003-39-8
Grades: K12, K15, K17, K25, K30, K60, K90, K120
Uses: Pharmaceuticals, cosmetics, inks, textiles

PVP Complex Compound

Specialized formulations including PVP-I for sericulture farm disinfection and other niche industrial uses.

Function: Clarifying agent, stabilizer
Application: Silkworm survival environment, reagent industry

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Key Applications

Our polymers are engineered to deliver performance across pharmaceuticals, personal care, and industrial sectors.

Medical & Pharmaceutical

• Pharmaceutical tablets (binder)
• Medical iodophor and antiseptics
• Dental impression materials
• Denture bonding agents
• Stabilization of suspensions

Personal Care & Beauty

• Viscosity control in beauty essences
• Hair styling formulations
• Hand sanitizer gels
• Cleaning wipes
• Cosmetic eyeliner and pigments

Industrial Applications

• Glue sticks and hot melt adhesives
• Coated paper ink
• Textile dyes and metal coatings
• Concrete block coatings
• Reagent clarifying agents

Frequently Asked Questions

What is PVP used for in pharmaceuticals?

PVP acts as a binder in tablet formulations, improves solubility of active ingredients, and stabilizes suspensions and emulsions.

Are your products compliant with international standards?

Yes, our pharmaceutical-grade materials comply with USP, EP, and other international pharmacopeial standards.

Can I get samples before placing an order?

Yes, we offer sample requests. Please visit sunvidone.com or contact our team for more information.

What packaging options are available?

We offer various packaging options including 5KG, 25KG bags, and 50KG/200KG drums depending on the product and customer requirements.

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