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KURARAY POVAL 5-88 is a non-ionic water-soluble polymer, produced in accordance with the EU regulations for GMP and complies with the specification of E 1203 (Reg EC No. 1333/2008 with E 1203 for tablet coating applications).
KURARAY POVAL 5-88 features water-solubility, excellent film forming characteristics, high tensile strength and elasticity, as well as resistance against organic solvents and dispersing power.
KURARAY POVAL 5-88 is recommended for modification of emulsion & remoistenable adhesives in the paper processing industry.
CAS number: 9002-89-5
EC number:200-778-4
Chemical Formula: (C2H4O)n
Synonyms: Polyvinyl alcohol, PVA, PVOH, Poly(vinyl alcohol), Vinyl alcohol polymer, Polyethenol, Hydrolyzed polyvinyl acetate, Partially hydrolyzed PVA, PVAL, Elvanol, Gohsenol, Mowiol, Airvol, Selvol, Alcotex
KURARAY POVAL 5-88 is a partially hydrolyzed polyvinyl alcohol (PVOH) resin manufactured by Kuraray, designed as a water-soluble, non-ionic polymer with low viscosity and excellent film-forming properties.
KURARAY POVAL 5-88 exhibits strong adhesion and binding performance, making it highly suitable for use in aqueous adhesive systems, paper processing, and coating applications.
KURARAY POVAL 5-88 offers a balanced degree of hydrolysis and controlled molecular weight, which ensures good compatibility with various formulations while maintaining stable processing behavior and consistent end-use performance.
KURARAY POVAL 5-88 is a partially hydrolyzed, polyvinyl alcohol (PVOH) grade.
KURARAY POVAL 5-88 is used as an adhesive promoter.
KURARAY POVAL 5-88 exhibits good bonding strength and pigment binding capacity.
KURARAY POVAL 5-88 provides good cohesion and adhesion to fibers, fillers and pigments.
Aqueous solution of KURARAY POVAL 5-88 can be added to polymer emulsion which is already stabilized with polyvinyl alcohol to extend the open time, increase setting speed and influence the rheology.
KURARAY POVAL 5-88 is recommended for modification of emulsion & remoistenable adhesives in the paper processing industry.
KURARAY POVAL 5-88 is also used in postage stamps and labels.
KURARAY POVAL 5-88 is the brand name of Kuraray’s globally produced polyvinyl alcohol (PVOH).
KURARAY POVAL 5-88 features an extremely wide-ranging field of applications.
The main uses are in the paper, adhesive, textile and construction industries, as well as in ceramics, packaging and electronics.
The physical and chemical properties make PVOH very versatile.
KURARAY POVAL 5-88 features water-solubility, excellent film forming characteristics, high tensile strength and elasticity, as well as resistance against organic solvents and dispersing power.
KURARAY POVAL 5-88 has been specially developed for the food and feed additive industry.
KURARAY POVAL 5-88 is a non-ionic water-soluble polymer, produced in accordance with the EU regulations for GMP and complies with the specification of E 1203 (Reg EC No. 1333/2008 with E 1203 for tablet coating applications).
Uses of KURARAY POVAL 5-88:
KURARAY POVAL 5-88 is widely used as a binder in paper processing applications such as envelope adhesives, postage stamps, and paper coatings due to its strong adhesion and film-forming properties.
KURARAY POVAL 5-88 is commonly applied in water-based adhesive formulations, including remoistenable adhesives and emulsion systems, where controlled viscosity and good wetting behavior are required.
KURARAY POVAL 5-88 is utilized as a protective colloid and stabilizer in polymerization processes, particularly in emulsion polymer systems.
KURARAY POVAL 5-88 is also used in coatings and surface treatments to improve film strength, flexibility, and resistance to cracking.
KURARAY POVAL 5-88 can function as a binder for pigments and fillers in various industrial formulations, enhancing dispersion stability and cohesion.
Characteristics of KURARAY POVAL 5-88:
Solubility:
KURARAY POVAL 5-88 dissolves in water.
The higher the water temperature, the quicker the rate of dissolution.
These products have extremely high oil resistance, and are insoluble in most organic solvents.
However, they dissolve in certain organic solvents such as glycols, DMSO and phenol.
Acid and alkaline resistant:
These materials are mostly unaffected under weak acid or alkaline conditions.
Thermal stability:
The melting point and temperature at which KURARAY POVAL 5-88 starts thermal decomposition are close together, with gradual decomposition at 180ºC or higher.
Film-forming:
Easily converted to threads or films, and the physical properties, including tensile strength, tear strength and abrasion strength, are excellent compared with other synthetic resins.
Hygroscopicity:
Lower hygroscopicity than other water-soluble polymers, and any changes caused by varying humidity are relatively minor.
Stability and Reactivity of KURARAY POVAL 5-88:
Chemical stability:
Stable.
Reactivity:
Low.
Avoid strong oxidizers.
Conditions to avoid:
Heat.
Ignition sources.
Dust formation.
Incompatible materials:
Strong oxidizing agents.
Hazardous decomposition:
Carbon monoxide (CO) may form.
Carbon dioxide (CO₂) may be generated.
Irritating fumes may be released.
Handling and Storage of KURARAY POVAL 5-88:
Handling:
Avoid dust inhalation.
Avoid eye contact.
Use good hygiene practices.
Storage:
Store in a cool, dry, and well-ventilated place.
Keep containers tightly closed.
First Aid Measures of KURARAY POVAL 5-88:
Inhalation:
Move to fresh air.
Skin contact:
Rinse with water.
Eye contact:
Rinse with water.
Ingestion:
Rinse mouth.
Seek medical advice if needed.
Firefighting Measures of KURARAY POVAL 5-88:
Suitable extinguishing media:
Water spray.
Foam.
Carbon dioxide (CO₂).
Dry chemical.
Hazards:
Dust explosion risk may be present.
Toxic fumes may be released during combustion.
Protection:
Use self-contained breathing apparatus.
Accidental Release Measures of KURARAY POVAL 5-88:
Precautions:
Avoid dust formation.
Ensure adequate ventilation.
Cleanup:
Sweep or vacuum spilled material.
Collect properly for disposal.
Exposure Controls / Personal Protection of KURARAY POVAL 5-88:
Ventilation:
Adequate ventilation is required.
Personal protective equipment:
Wear gloves.
Use safety glasses.
Use dust mask if needed.
Identifiers of KURARAY POVAL 5-88:
CAS number: 9002-89-5
EC number:200-778-4
Chemical formula: (C₂H₄O)n
Chemical type: Partially hydrolyzed polyvinyl alcohol
Grade designation: 5-88
Properties of KURARAY POVAL 5-88:
Appearance: White to off-white powder or granules
Odor: Odorless
Solubility: Soluble in water; insoluble in most organic solvents
pH: Approximately 5–7
Viscosity : 4.8–5.8 mPa·s
Degree of hydrolysis: 86.5–89.0 mol%
Density: ~1.2–1.3 g/cm³
Melting point: Decomposes before melting
Film forming: Excellent film-forming properties
Ionic character: Non-ionic
Moisture sensitivity: Hygroscopic
