Our product, Poly (methyl vinyl ether-alt-maleic acid) with CAS number 25153-40-6, is a high - quality chemical compound offered by our factory at the best price. This polymer is synthesized through an alternating copolymerization of methyl vinyl ether and maleic acid.
It is usually presented as a white to off - white powder. The molecular weight of this polymer can vary depending on the specific manufacturing process, typically ranging from several thousand to several hundred thousand Daltons. It has good solubility in water, forming a clear and viscous solution. The pH of its aqueous solution is generally in the acidic range, usually around 2 - 3, depending on the concentration. The melting point of this product is relatively high, typically above 200°C, and it has good thermal stability within a certain temperature range.
Poly (methyl vinyl ether-alt-maleic acid) has a wide range of applications in various industries. In the pharmaceutical industry, it is often used as a drug carrier. Its unique chemical structure allows it to form complexes with drugs, which can control the release rate of drugs, improve drug bioavailability, and reduce the side - effects of drugs. For example, it can be used in the formulation of oral controlled - release tablets or injectable drug delivery systems.
In the cosmetic industry, it serves as a thickener, stabilizer, and film - forming agent. It can improve the texture of cosmetic products such as lotions, creams, and gels, making them more stable during storage and use. It can also form a protective film on the skin surface, preventing moisture loss and improving skin smoothness.
In the water treatment industry, it is used as a scale inhibitor and dispersant. It can prevent the formation of scale on the surface of pipes and equipment by chelating metal ions and dispersing suspended particles in water, thereby improving the efficiency of water treatment systems.
When using Poly (methyl vinyl ether-alt-maleic acid), first, determine the appropriate concentration according to the specific application. For example, in a drug delivery system, the concentration may need to be accurately calculated based on the type and dosage of the drug.
To dissolve the product, add it slowly to water under stirring conditions. Use a mechanical stirrer to ensure uniform dispersion. The stirring speed and time can be adjusted according to the volume and concentration of the solution. Generally, stirring for 30 - 60 minutes at a moderate speed can achieve good dissolution. After dissolution, the solution can be further processed according to the specific application. For example, in the preparation of a controlled - release tablet, the solution may need to be mixed with other excipients and then compressed into tablets.
Case 1: Pharmaceutical Application
A pharmaceutical company was developing a new oral controlled - release drug for hypertension. They used Poly (methyl vinyl ether-alt-maleic acid) as a drug carrier. By adjusting the molecular weight and concentration of the polymer, they were able to precisely control the release rate of the drug. In the in - vitro release test, the drug was released slowly and steadily over a period of 24 hours, which was in line with the expected therapeutic effect. Clinical trials also showed that the new drug formulation had better patient compliance and fewer side - effects compared to the traditional immediate - release formulation.
Case 2: Cosmetic Application
A cosmetic brand wanted to improve the texture and stability of their facial cream. They added Poly (methyl vinyl ether-alt-maleic acid) to the formula. After the addition, the cream became more viscous and had a better spreadability. During the accelerated stability test at different temperatures, the cream did not show any signs of separation or phase change, indicating improved stability. Consumer feedback also showed that the cream had a better moisturizing effect and a smoother feel on the skin.
Case 3: Water Treatment Application
A water treatment plant was facing the problem of scale formation in its pipes and heat exchangers. They added Poly (methyl vinyl ether-alt-maleic acid) as a scale inhibitor. After continuous use for several months, the scale formation on the surface of pipes and heat exchangers was significantly reduced. The efficiency of the heat exchanger increased by about 15%, and the maintenance cost of the water treatment system was also reduced.
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This is William, CEO of Zhishang Chemical Co., Ltd.
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