Polyvinyl Alcohol

Quick Details

PVA is a kind of heavy polymer. It is white or light yellow granular or powdery in appearance. Its molecular formula is [CH2CHOH] n, and the molecular formula for some of the

PVA is - [CH2CHOH] n- [CH2CHOOCCH3]m-. PVA is non-toxic, insipid and harmless. PVA is water-soluble and the solvent provide good viscosity and film building. It can

withstand oils, lubricants, hydrocarbons and most other organic solvents. PVA has better chemical stability and insurability, and provide ease in firm building; It possess the typical

chemical properties of polyols and can carry out process of esterification, etherealization, aceatalization etc.

Product description

PVA has many exceptional properties such as water solubility, fiber-forming property, adhesiveness, film-forming property, emulsion stability, dispersion stability, resistance to oil,

acid, and alkali, chemical reactivity, biodegradability, as well as meltability (or thermoplasticity) and many unique and special properties through modification. PVA is widely used

in many industries like textile, papermaking, construction, chemicals, printing, packaging, pharmaceuticals, detergents & cosmetics, agriculture, ceramics, iron & steel, electronics,

electrolysis, electroplating, and etc.

Application:  

PVA, which is excellent in colloid protection and has superior surface activity, is often used as dispersion stabilizer for suspension polymerization of vinyl chloride monomer (VCM).

The performance of PVC resin can be greatly optimized by selecting a suitable PVA grade with proper degree of polymerization and hydrolysis.

Emulsion Stabilizer & Binder

PVA can be widely used as protective colloid or thickener for the emulsion polymerization of vinyl acetate (VAc) or VAc/ acrylate. It has the following characteristics: excellent adhesiveness；

increased initial tack and drying rate while used with filler；excellent resistance to oil outstanding film strength；enduring and stable performance.

Fiber fabrication

Two important applications of PVA is to be used as vinylon feedstock and sizing agent for textile. As raw material of vinylon fiber, has the advantages of being high in strength, moisture absorption,

abrasion resistance, sunlight resistance, corrosion resistance and white in color. It can also be spun with cotton, wool and viscose fiber or purely spun with itself. As sizing agent for textile, It will not

corrode or deteriorate with a good adhesion to cotton, hemp, polyester and viscose fiber.

Film

PVA can be used to produce water soluble film and water-resistance film. PVA is available in formed products which highlight the inherent features of PVA, namely, high tensile strength, resistance

to organic solvent and air tightness. They are both widely used in the package industry, not only for textile, but also for chemicals, food, daily chemicals, agricultural chemicals, dyestuff, and etc.

Pulp & Paper

PVA has found wide use in the treatment of paper surface as it has excellent adhesiveness and dispersibility and will not affect the property of other binders used in combination. The advantages

of PVA using: Surface strength (printability)；Strength along Z-axis(paper internal strength)；Folding resistance；Abrasive resistance: improved smoothness; Improved surface glossiness；Raised

resistance to oil and solvent (barrier property).

Specification of PVA

Index name Grade name	Hydrolysis (mol%)	Viscosity (cps)	Volatile (%)	Ash (%)	Particle size less than... (mesh)
PVA05-88	86.0-90.0	4.5-6.5	5.0max	0.5max	10 ~160
PVA05-99	98.0-99.8	4.5-7.0	5.0max	0.5max
PVA17-88	86.0-90.0	20.0-26.0	5.0max	0.5max
PVA17-99	98.0-100.0	26.0-35.0	5.0max	0.5max
PVA20-88	86.0-90.0	28.0-35.0	5.0max	0.5max
PVA24-88	86.0-90.0	44.0-56.0	5.0max	0.5max
PVA24-99	99.0-100.0	68.0-80.0	5.0max	0.5max
PVA26-88	86.0-90.0	60.0-68.0	5.0max	0.5max
PVA26-99	98.0-100.0	80.0-98.0	5.0max	0.5max

*** For other grades of PVA and any application questions, please contact us.

Packaging

25kg paper bag or 500~750kg flexible freight bags.