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Zhejiang Retron Biotech Co., Ltd. (referred to as Retron Biotech) is located in the town of Tianzi Lake, Anji County, which is the first county in China to receive the "United Nations Habitat Environment Award" and known as the "Hangzhou Back Garden". Retron Biotech was established in April 2021, covering an area of over 5.3 acres with a total investment of 28 million USD.Since 2018, Huzhou Retron Food Additive Co., Ltd., a wholly-owned subsidiary of Retron Biotech, has been dedicated to the research, development, and production of cross-linked polyvinylpyrrolidone (PVPP).
Why Choose Us
Our Certificate
We ISO9001,ISO22000,ISO45001, HALAL Certificate,food production license, DMF,China pharmaceutical excipients record registration.
Business Philosophy
The company adheres to the enterprise tenet of "focusing on customers' needs", adheres to the business philosophy of "truth-seeking, pragmatism, professional technology, and quality first", and sincerely carries out ll-round cooperation with domestic and foreign customers.
Rich Experience
Dedicated to strict quality control and attentive customer service, our experienced staff is always available to discuss your requirements and ensure complete customer satisfaction.
Production Market
We China, East Asia, Southeast Asia, Eastem Europe, the Middle East, Western Europe, the United States.
Properties Of Copolymer PVP/VA64P
One of the key surface properties of PVP/VA is its hydrophilicity. Hydrophilic means it has an affinity for water. This property makes PVP/VA great for applications where water solubility or water absorption is important. For example, in the pharmaceutical industry, PVP/VA can be used as a tablet binder. When it comes into contact with water, it swells and helps hold the tablet together. You can check out more about Tablet Binder Copovidone on our website.
Another important surface property is its adhesion. PVP/VA has good adhesive properties, which means it can stick to different surfaces. This makes it useful in adhesives and coatings. In the cosmetic industry, it can be used to make hair sprays and gels. The polymer adheres to the hair, providing hold and style. And if you're interested in the specific type of copolymer for this, take a look at VP/VA Copolymer.
The surface of PVP/VA also has a certain degree of flexibility. This flexibility allows it to form films that can conform to different shapes. In the packaging industry, PVP/VA films can be used to protect products. The flexible film can wrap around items and provide a barrier against moisture and oxygen.
PVP/VA also has some surface properties related to its chemical reactivity. It can interact with other chemicals in a controlled way. This is useful in drug delivery systems. The polymer can be designed to release drugs at a specific rate, depending on the surrounding environment. For more details on a specific type of copolymer used in such applications, check out PVP/VA 64 Copolymer/Copovidone.
Now, let's talk about how these surface properties can be affected by different factors. Temperature is one of the big ones. At higher temperatures, the polymer chains become more mobile, which can change its surface properties. For example, the adhesion might decrease at very high temperatures. Humidity also plays a role. Since PVP/VA is hydrophilic, it can absorb moisture from the air. This can affect its swelling behavior and other surface characteristics.
The molecular weight of the PVP/VA also matters. A higher molecular weight polymer will generally have different surface properties compared to a lower molecular weight one. Higher molecular weight polymers might have better film-forming properties but could be less soluble in water.
Povidone K90 offers several advantages that make it a valuable component across diverse industries. Its excellent solubility in both water and various organic solvents allows for versatile applications in complex formulations. The polymer’s stability under a wide range of pH levels and temperatures enhances its utility in environments where chemical resilience is necessary. Additionally, Povidone K90 non-toxic, non-irritating, and biocompatible properties ensure that it can be safely used in products intended for human contact, which is especially important in pharmaceutical and cosmetic applications.
Product Specifications
|
Product |
K value |
Solid content |
Ph * |
Residual (nvp) |
Residual Note (vac) |
Moisture |
|
Pvp va37 e |
28.0~36.0 |
48.0~52.0% |
5.0~9.0 |
<0.1% |
<0.03% |
/ |
|
Pvp va55 e |
22.0~28.0 |
48.0~52.0% |
5.0~9.0 |
<0.1% |
<0.03% |
/ |
|
Pvp va64 e |
26.0~34.0 |
48.0~52.0% |
5.0~9.0 |
<0.1% |
<0.03% |
/ |
|
Pvp va64 powder |
26.0~34.0 |
>95.0% |
5.0~7.0 |
<0.1% |
<0.03% |
<5% |
|
Pvp va73 e |
28.0~38.0 |
48.0~52.0% |
7.0~9.0 |
<0.1% |
<0.03% |
/ |
|
Product |
Pvp va64 powder |
|
k value |
26~32 |
|
Solid content, % |
>95.0 |
|
Ph *(10% aqueous solution) |
3.0~7.0 |
|
Residual bill, % |
<0.2 |
|
Sulfate ash |
<0.1% |
|
Nitrogen content, % |
7.0~8.0 |
|
Heavy metals, ppm |
<10 |
|
Aldehyde, % |
<0.05 |
|
Hydrazine, ppm |
<1 |
|
Ppm peroxide |
<400 |
|
TEST ITEMS |
SPECIFICATIONS |
TEST VALUE |
|
Appearance |
White powder |
Complies |
|
Identification |
Conform |
Complies |
|
K Value |
81-97 |
89.45 |
|
Monomer % |
<0.1 |
0.047 |
|
Moisture % |
<5.0 |
3.98 |
|
Sulfate ash % |
<0.1 |
0.055 |
|
PH value |
3-7 |
3.63 |
|
Nitrogen % |
11.5-12.8 |
12.0 |
|
Aldehyde (as acetaldehyde) % |
<0.05 |
<0.05 |
|
Heavy metal (as lead) ppm |
<10 |
<10 |
|
Hydrazine ppm |
<1.0 |
<1.0 |
|
Peroxide ppm |
<400 |
<400 |
Cosmetics Industry
For the cosmetics made of PVP va, such as hair spray and mousse, compared with those made of natural shellac, has the advantages of good luster, strong elasticity, easy combing, non-brittle, non-stick and comfortable after use. For example, in hair fixing agent raw materials, the addition of PVP va can significantly enhance the hair fixing effect, at the same time to maintain a good feeling. When mixed with PVP-K30, it can enhance the effect of fixed hair.
Other industrial uses
As an adhesive, PVP va can be used as paper adhesive, and various ink thickeners and protective colloid.
In the coating industry, PVP va can be used as an adhesive for coatings, helps to improve the adhesion and durability of coatings.
Water-soluble PVP/VA64 series products are also commonly used as emulsifiers and protective colloids for plant protection agents. In addition, PVP va copolymer can also be used as a rewetting binder, suitable for a variety of application scenarios.
|
Main application of the Povidone Binder Bioavailability enhancement |
Tablets, capsules, granules Tablets, capsules, granules, pellets, suppositories, transdermal systems |
|
Film formation Solubilization Stabilization of suspensions |
Ophthalmic solutions, tables, medical plastics Oral, Parenteral and topical solutions Oral and parenteral suspensions, instant beverage Powders and granules |
|
Hydrophylization Adhesives Drug stabilization Toxicity reduction Tablets, capsules, granules |
Medical plastics, retard preparations, suspensions Transdermal systems, adhesive gels Enzymes in diagnostics Injection preparations |
Packaging & Shipping
FAQ
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