KURARAY POVAL 23-88

KURARAY POVAL 23-88 is a non-ionic polymer with higher viscosity compared to lower-grade PVOH types, offering strong film-forming ability, excellent adhesion, and good binding performance.
KURARAY POVAL 23-88 features water-solubility, excellent film forming characteristics, high tensile strength and elasticity, as well as resistance against organic solvents and dispersing power.
KURARAY POVAL 23-88 exhibits good affinity to cellulose such as pulp & cotton and high adhesion strength to hydrophobic substances.

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, Vinol, POVAL, Kuraray Poval, Polyvinylalcohol resin, PVA resin

KURARAY POVAL 23-88 is a water-soluble, partially hydrolyzed polyvinyl alcohol (PVOH) resin produced by Kuraray.
KURARAY POVAL 23-88 is a non-ionic polymer with higher viscosity compared to lower-grade PVOH types, offering strong film-forming ability, excellent adhesion, and good binding performance.
KURARAY POVAL 23-88 is designed for applications requiring higher viscosity, improved cohesion, and stable performance in aqueous systems.

KURARAY POVAL 23-88 is a partially saponified grade of polyvinyl alcohol.
KURARAY POVAL 23-88 is supplied as fine powder/granules with defined grain size.

KURARAY POVAL 23-88 is recommended for a variety of uses, ranging from emulsion polymerization aids to binders for pigments in paper applications.
KURARAY POVAL 23-88 has a viscosity of 21.5 - 24.5 mPa.s.

KURARAY POVAL 23-88 is polyvinyl alcohol (PVOH) grade modified with cationic monomer.
KURARAY POVAL 23-88 exhibits good affinity to cellulose such as pulp & cotton and high adhesion strength to hydrophobic substances.
KURARAY POVAL 23-88 is recommended for use in adhesives.

KURARAY POVAL 23-88 is the brand name of Kuraray’s globally produced polyvinyl alcohol (PVOH).
KURARAY POVAL 23-88 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 23-88 features water-solubility, excellent film forming characteristics, high tensile strength and elasticity, as well as resistance against organic solvents and dispersing power.
KURARAY POVAL 23-88 polyvinyl alcohols (PVOH/PVA) are key starting products in many industries – from the production of specialty papers, PVC, plastics, food packaging, textiles, cosmetics and ceramics to construction materials, emulsions and adhesives.

Their unique properties improve product quality and performance as well as production efficiency.
Moreover, their very good environmental compatibility and health profile facilitate the development of sustainable solutions.

KURARAY POVAL 23-88 is a polyvinyl alcohol (PVOH) grade modified with cationic monomer.
KURARAY POVAL 23-88 exhibits good affinity to cellulose such as pulp & cotton and high adhesion strength to hydrophobic substances.

KURARAY POVAL 23-88 exhibits good water solubility, excellent film-forming properties, high tensile strength and elasticity.
KURARAY POVAL 23-88 shows very good dispersing power and resistance against organic solvent.
KURARAY POVAL 23-88 can be used in wide range of applications such as textile, construction, ceramics, packaging and electronics.

KURARAY POVAL 23-88 is a partially saponified polyvinyl alcohol (PVA) grade by Kuraray.
KURARAY POVAL 23-88 exhibits excellent water solubility, strong film-forming properties and oil & grease resistance.

KURARAY POVAL 23-88 provides wetting properties on polar substances, good pigmentability, adhesiveness, low ash & VOC content and emulsifying property.
KURARAY POVAL 23-88 is suitable for processing by injection molding and blown or flat film extrusion.

KURARAY POVAL 23-88 is used as adhesive promoters and protective colloids.
KURARAY POVAL 23-88' possible applications include adhesives, specialty papers, building materials (additive for mortar, cement etc.), polymerization (emulsion/suspension), temporary binders for ceramics, gas barrier coating, textiles sizing and fluid loss control in oil well cementing.

Uses of KURARAY POVAL 23-88:
KURARAY POVAL 23-88 is widely used in water-based adhesive formulations as an effective adhesive promoter, providing strong bonding performance and higher viscosity control.
KURARAY POVAL 23-88 is commonly applied in remoistenable adhesive systems such as envelopes, labels, and paper converting products due to its excellent film-forming and cohesive properties.
KURARAY POVAL 23-88 also functions as a protective colloid in emulsion polymerization, stabilizing polymer dispersions, and is used as a binder for pigments, fillers, and fibers in coatings and paper applications, especially where higher viscosity and enhanced film strength are required.

Ranging from the production of paper adhesives as well as production of sizes and textile finishes.
KURARAY POVAL 23-88 is also for binder in the surface finishing of paper, regulation of processing characteristics for all coating types, modification of emulsion adhesives and remoistenable adhesives, protective colloid for emulsion polymerization, binder and raw material for PVOH films. 

Advantages of KURARAY POVAL 23-88:
High viscosity provides improved formulation control and stability,
Excellent film-forming ability ensures strong and uniform coatings,
Strong adhesion to fibers, pigments, and fillers,
Good cohesion enhances mechanical strength of films,
Water-soluble and easy to process in aqueous systems,
Non-ionic structure ensures compatibility with various formulations,
Effective as protective colloid in emulsion polymerization,
Improves open time and setting behavior in adhesive systems.

Stability and Reactivity of KURARAY POVAL 23-88:

Chemical stability:
Stable.

Reactivity:
Low.
Avoid strong oxidizing agents.

Conditions to avoid:
Heat.
Ignition sources.
Moisture.
Dust formation.

Incompatible materials:
Strong oxidizers.

Hazardous decomposition:
Carbon monoxide (CO) may form.
Carbon dioxide (CO₂) may be generated.
Irritating fumes may be released.

Handling and Storage of KURARAY POVAL 23-88:

Handling:
Avoid dust inhalation.
Avoid eye contact.
Use good industrial hygiene practices.

Storage:
Store in a cool, dry, and well-ventilated place.
Keep container tightly closed.

First Aid Measures of KURARAY POVAL 23-88:

Inhalation:
Move to fresh air.

Skin contact:
Rinse thoroughly with water.

Eye contact:
Rinse thoroughly with water.

Ingestion:
Rinse mouth.
Seek medical advice if necessary.

Firefighting Measures of KURARAY POVAL 23-88:

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 23-88:

Precautions:
Avoid dust generation.
Ensure adequate ventilation.

Cleanup:
Sweep or vacuum spilled material.
Collect into suitable containers.

Exposure Controls / Personal Protection of KURARAY POVAL 23-88:

Ventilation:
Provide adequate ventilation.

Personal protective equipment:
Use gloves.
Use safety glasses.
Use dust mask or respirator if needed.

Identifiers of KURARAY POVAL 23-88:
CAS number: 9002-89-5
EC number: 200-778-4
Chemical formula: (C₂H₄O)n
Chemical type: Partially hydrolyzed polyvinyl alcohol
Grade designation: 23-88 (≈23 mPa·s, ~88% hydrolysis)

Properties of KURARAY POVAL 23-88:
Appearance: White to off-white powder or granules
Odor: Odorless
Solubility: Soluble in water; insoluble in most organic solvents
pH (4% solution): Approximately 5–7
Viscosity (4% solution): ~23 mPa·s
Degree of hydrolysis: ~86.5–89.0 mol%
Density: ~1.2–1.3 g/cm³
Melting point: Decomposes before melting (~180–230°C)
Film forming: Excellent film-forming properties
Ionic character: Non-ionic
Moisture sensitivity: Hygroscopic