1、PVAP_化工百科

化学改性常采用酯化、醚化、酰化等方法，以改变PVA的官能团，从而改善其性能。 物理改性包括共混、交联、复合等方法，以改变PVA的结构，提高其力学性能和耐热性。 改性PVA一般是非毒性的，但具体的改性方法和所用材料可能会对其毒性产生影响，在使用过程中需要根据具体情况采取相应的防护措施。 在制备和应用改性PVA时，应注意防止其与酸、碱、氧化剂等物质接触，以免发生反应。 当使用改性PVA时，应注意避免吸入其粉尘或溶液，避免皮肤和眼睛接触。 在存储和运输过程中，应保持改性PVA的干燥和密封，防止与湿气或水接触。 最后更新：2024-04-09 20:49:11.

2、CAS 34481

Polyvinyl acetate phthalate is a viscosity-modifying agent that is used in pharmaceutical formulations to produce enteric coatings and for the core sealing of tablets prior to a sugar-coating process.

3、Polyvinyl Acetate Phthalate: A Technical Guide for Pharmaceutical

Polyvinyl acetate phthalate (PVAP) is a functional polymer extensively utilized in the pharmaceutical industry, primarily as an enteric coating for solid oral dosage forms.

POLY (VINYLACETATE PHTHALATE) CAS#: 53237

ChemicalBook provide Chemical industry users with POLY (VINYLACETATE PHTHALATE) Boiling point Melting point,POLY (VINYLACETATE PHTHALATE) Density MSDS Formula Use,If You also need to POLY (VINYLACETATE PHTHALATE) Other information,welcome to contact us.

Processing of Polyvinyl Acetate Phthalate in Hot

In particular, pH-dependent soluble polymers have proven to be an excellently suitable carrier material for ASDs. Polyvinyl acetate phthalate (PVAP) is a polymer with a pH-dependent solubility, which is as yet not thoroughly characterized regarding its suitability for a hot-melt extrusion process.

poly (vinylacetate phthalate)

Chemsrc provides poly (vinylacetate phthalate) (CAS#:53237-50-6) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of poly (vinylacetate phthalate) are included as well.

PVAP

Name:POLY (VINYLACETATE PHTHALATE),CAS:53237-50-6.Molecular Fomula:C12H14O7,Molar Mass:270.24,MSDS,Hazard,Safety.

China poly (vinylacetate phthalate) CAS:53237

Welcome to contact us for Polyvinyl alcohol,modified COA or MSDS., China and India manufacturer of Polyvinyl alcohol,modified CAS:53237-50-6.

Polyvinyl alcohol acetate phthalate_化工百科

Polyvinyl alcohol acetate phthalate - 简介 改性PVA是改性聚乙烯醇（Polyvinyl Alcohol）的简称，是一种常用的高分子材料。 改性PVA具有以下性质： 可溶性：改性PVA在水中具有良好的溶解性，而且可以形成胶体溶液。

POLY (VINYLACETATE PHTHALATE)

ChemicalBook あなたのためにPOLY (VINYLACETATE PHTHALATE) (53237-50-6)の化学的性質を提供して、融点、価格、蒸気圧、沸点、毒性、比重、沸点、密度、分子式、分子量、物理的な性質、毒性 税関のコードなどの情報、同時にあなたは更にPOLY (VINYLACETATE PHTHALATE) (53237-50-6 ...

Poly(vinyl alcohol) Phthalate (PVAP): A High-Performance Synthetic Material

Poly(vinyl alcohol) phthalate (PVAP) is a novel high-performance synthetic material with excellent mechanical properties, chemical stability, and biocompatibility. This article introduces PVAP from the following aspects:

I. Structure and Properties of PVAP

1. Molecular Structure: PVAP is a high-molecular-weight polymer formed primarily through the esterification reaction between poly(vinyl alcohol) (PVA) and phthalic acid ester (PMA). Its molecular structure is linear or branched, offering flexibility and malleability.

2. Physical Properties: PVAP exhibits good thermal stability and mechanical performance, maintaining structural and functional integrity at elevated temperatures. It also boasts high tensile strength, compressive strength, and impact resistance, making it suitable for diverse industrial applications.

3. Chemical Properties: PVAP demonstrates strong acid and alkali resistance, as well as solvent resistance, effectively withstanding corrosion by various chemicals. Additionally, it shows excellent biocompatibility, posing no toxic risks to humans.

4. Electrical Properties: PVAP has superior electrical insulation capabilities and maintains stable conductivity at high frequencies. It also exhibits efficient thermal conductivity, enabling effective heat transfer.

II. Applications of PVAP

1. Construction Industry: PVAP is used to manufacture waterproof membranes, coatings, and adhesives for roofs, walls, floors, and other construction projects, providing waterproofing, insulation, and decorative functions.

2. Chemical Industry: PVAP serves as a catalyst carrier, adsorbent, or separation membrane in petroleum, chemical, and environmental protection fields.

3. Electronics and Electrical Engineering: PVAP is employed in conductive adhesives, coatings, and films for electronic devices, such as circuit boards, touchscreens, and displays.

4. Medical Field: Due to its outstanding biocompatibility, PVAP is utilized in medical dressings, artificial blood vessels, and bone repair materials.

5. Aerospace Industry: PVAP can be processed into lightweight, high-strength materials for aircraft fuselages, spacecraft exteriors, and other aerospace components.

III. Preparation Methods of PVAP

1. Solution Polymerization: PVA and PMA are dissolved in an organic solvent, followed by the addition of an initiator to trigger free-radical polymerization, yielding PVAP homopolymers or copolymers.

2. Emulsion Polymerization: PVA and PMA are dispersed in a water-based medium with emulsifying agents and initiators to form PVAP emulsions.

3. Melt Polymerization: PVA and PMA are mixed and heated to induce transesterification reactions, producing PVAP homopolymers or copolymers.

IV. Future Prospects of PVAP

With advancements in science and technology, the performance and application scope of PVAP are expected to expand further. In the future, PVAP may play a larger role in construction, chemical industries, electronics, healthcare, aerospace, and other fields, offering greater convenience and benefits to society.