PVP : Polyvinylpyrrolidone | NIPPON SHOKUBAI

PVP: Polyvinylpyrrolidone

Product	PVP: Polyvinylpyrrolidone
Structure
CAS No.	9003-39-8
Applications	Adhesives, Detergents, Fiber treatments, Photoresists, Cosmetics, Dye and pigment dispersants

PVP-Polyvinylpyrrolidone is a nonionic water-soluble polymer and can be applied in a variety of fields-of-use owing to following advantageous characteristics.

Good solubility in water as well as various organic solvents
Good affinity to various polymers and resins
High hygroscopicity
Good film formation property
Good adhesiveness to various substrates
Good chelate / complex formation property

Typical properties of Polyvinylpyrrolidone

*Powder

Product	Polyvinylpyrrolidone K-30	Polyvinylpyrrolidone K-85	Polyvinylpyrrolidone K-90
Appearance	White powder	White powder	White powder
K-value ^*1	27.0~33.0	84.0~88.0	88.0~96.0
Solid content, %	≥95.0	≥95.0	≥95.0
Water content, %	<5.0	<5.0	<5.0
Residual monomer content, ppm	<100	<100	<100
pH ^*2	3.0~7.0	5.0~9.0	5.0~9.0

*Aqueous solution

Product	Polyvinylpyrrolidone K-30W	Polyvinylpyrrolidone K-85W	Polyvinylpyrrolidone K-90W
Appearance	Clear viscous liquid	Clear viscous liquid	Clear viscous liquid
K-value ^*1	27.0~33.0	86.0~90.0	90.0~103.0
Solid content, %	29.0~31.0 49.0~51.0	19.0~21.0	19.0~21.0
Residual monomer content, ppm	<100	<100	<100
pH ^*2	5.0~9.0	5.0~9.0	5.0~9.0

* These are not official specification.
*1 Fikentscher's value of viscosity characteristics K-value represents a viscosity index relating to molecular weight and is calculated by the following Fikentscher's formula with relative viscosity which is measured by capillary viscometer at 25 C
K= (1.5 log η_rel -1)/ (0.15+0.003c)+ (300c log η_rel + (c+1.5clog η_rel)²)^1/2/ (0.15c+0.003c²)
η_rel : Relative viscosity of aqueous polyvinylpyrrolidone solution to water
c : Content (w/w%)of polyvinylpyrrolidone in aqueous polyvinylpyrrolidone solution
*2 Measured with 10% aqueous solution

Example of Applications

Adhesives	water-activated (envelopes, stamps) pressure-sensitive glue sticks bookbinding
Protective Colliods	particle-size regulators suspending agents viscosity modifiers
Resin Compounds	dye-receptivity/printability improvers compatibilizers for heterogeneous resins filler dispersants wood plastic composites anti-static agents
Films	printability improvers adhesiveness improvers anchor coatings anti-fogging agents image receiving coatings water soluble films
Textiles / Fibers	dye stripping dye-receptivity improvers pigment dispersants anti-fouling agents hydrophilicity improvers anti-static agents
Paper / Printing	strength improvers sizing agents pigment dispersants ink removal in recycling paper ink jet paper
Coatings / Inks	pigment /dye dispersants viscosity modifiers film levellers anti-fogging coatings anti-fouling coatings ball-point inks
Laundry Detergants	anti-redeposition agents dye-transfer inhibitors binders for tablet formulations
Metal Working	metal quench bath
Oil / Gas Fields	drilling fluid additives fluid loss cotrol gas hydrate preventors
Electrical	black matrix for TV tube binders for battery electrodes nonwoven battery separator treatment
Ceramics	binders for green sheets
Photography	photo emulsion additives colorant receptors
Cosmetic	hair gel hair spray lip stic

* These are not official specification.

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