PVA 1788LM

PVA 1788LM is a type of low methanol, medium viscosity and partially hydrolyzed polyvinyl alcohol. Low methanol content PVA products are widely used across industries due to their enhanced safety and eco-friendliness.

Descriptions

Applications:

Adhesives & Coatings: Ideal for eco-friendly glues (wood, paper, textiles) and water-based coatings, minimizing VOC emissions and indoor air pollution.
Food Packaging: Safe for biodegradable films and edible packaging, meeting strict food-contact safety standards.
Textiles: Low-toxicity sizing agents for yarns, ensuring compliance with international textile safety regulations.
Pharmaceuticals & Cosmetics: Used in drug coatings, capsules, and skincare products (e.g., gels, masks) for biocompatibility.
Construction Materials: Enhances concrete strength as an additive while reducing onsite chemical hazards.
Advanced Applications: Water-soluble supports for 3D printing, temporary films for electronics, and more.

Product Parameter (Specification)

Objet	Index
Hydrolyse (mole%)	87.0 ~ 89.0
Viscosité (mPa.s)	21.0 ~ 26.0
Methanol Content (wt%)	≤0.6
Volatile(wt%)	≤4.0
Frêne (wt%)	≤0.4
Valeur du pH	5 ~ 7
Pureté (%)	≥94

Storage

Le produit doit être stocké à l'intérieur, dans un endroit sec et bien ventilé. L'emballage ne doit pas être exposé à l'humidité, au soleil ou à la pluie. Des moyens de transport propres et couverts doivent être utilisés pour le transport afin d'éviter la contamination, l'humidité ou la pluie.

Transport :

Il faut un véhicule propre pour le transport. Il faut veiller à éviter l'humidité, la pluie et la protection solaire. Manipuler avec précaution pour éviter d'endommager l'emballage. Le stockage avec des produits chimiques volatils est strictement interdit pour éviter la détérioration de l'adsorption.

FAQ
Q : Quel est l'indice de propriété de l'alcool polyvinylique ?
A : Polyvinyl alcohol PVA is a solid substance, colorless and scentless in the shape of floccus, flake or granule. As it contains plenty of hydroxyl groups in its molecule, PVA is easily soluble in water as well as in organic compounds also containing hydroxyl such as glycerol, glycol, acetic acid, acetaldehyde and benzoic acid, except for general organic solvents in which it is insoluble. When heated up to 130-140℃, PVA gets yellow without essential changes in nature; when at 160℃ for a longer time, it gets darker; at 200℃, inter-molecular dehydration takes place with lower water solubility; at above 200℃, intra-molecular dehydration takes place; nearly at 300℃, PVA is decomposed into water, acetic acid, acetaldehyde and crotonaldehyde. The bulk densities of PVA vary depending on methods of alcoholysis: 0.2~0.27g/ml for high alkali alcoholysis and 0.42~0.52 g/ml for low alkali alcoholysis.

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