Application

Industrial & Specialty Applications

PVP K30 as a hydrophilic pore-forming additive for PES/PVDF/PAN hollow-fiber membranes; PVP K30 as a dispersant in lithium-ion battery cathode slurry (LFP/NCM systems); Hollow Glass Microspheres for lightweight, high-strength cementing slurries in oilfield drilling and as a low-density filler in coatings; 2-Pyrrolidone as a high-boiling polar solvent in resin and coating synthesis.

Industrial & Specialty Applications — application scenario

Related Products

PVP (Polyvinylpyrrolidone) →Hollow Glass Microspheres (HGM) →2-Pyrrolidone (2-P / α-Pyrrolidinone) →

PVP, Hollow Glass Microspheres, and 2-Pyrrolidone support a broad range of industrial and specialty applications — from membrane casting and battery manufacturing to oilfield cementing and process-solvent roles.

Membrane Pore-Forming Agent

PVP K30 is added to the casting dope of PES, PVDF, and PAN hollow-fiber membranes. During non-solvent induced phase separation (NIPS) or thermally induced phase separation (TIPS), the hydrophilic PVP migrates to the membrane surface, shaping an open, interconnected pore structure. Higher PVP content generally yields higher porosity and water flux, and residual PVP increases wettability and fouling resistance. Combining K30 with low-K grades (K15/K17) lets producers fine-tune pore size distribution and balance water flux against rejection rate.

Battery Cathode Slurry Dispersant

In LFP and NCM cathode systems, PVP K30 disperses carbon nanotubes (CNT) and other conductive additives uniformly through the slurry, preventing agglomeration and supporting consistent coating thickness across the current collector. During co-precipitation synthesis of cathode precursors, PVP also improves particle-size uniformity, which directly influences final electrochemical performance. Purity, metal-ion content, moisture, and ash can be tailored for battery-grade requirements on request.

Oilfield Cementing with Hollow Glass Microspheres

High-molecular-weight PVP (K60–K120) reduces filtration loss in drilling muds and inhibits clay hydration and shale dispersion, reducing complications such as bit balling and stuck pipe. Paired with our Hollow Glass Microspheres (HGM), cementing slurries achieve low density with high compressive strength — supporting zonal isolation in deep and demanding wells. HGM also serves as a low-density filler in coatings and composites.

2-Pyrrolidone as a Process Solvent

2-Pyrrolidone is a high-boiling polar solvent in resin and coating synthesis, valued for its low volatility, strong solvency, and high thermal stability — including its role in polymer processing and monomer recovery.

Frequently Asked Questions

Which PVP grade is used in membrane manufacturing?
PVP K30 is the primary pore-forming grade for hollow-fiber ultrafiltration membranes, often combined with lower K-value grades such as K15/K17 to fine-tune pore size distribution and water flux.
What is PVP used for in lithium batteries?
PVP acts as a dispersant in cathode slurry preparation — particularly for LFP and NCM systems — to distribute carbon nanotubes and conductive additives evenly and improve precursor particle uniformity during co-precipitation synthesis.
Which PVP grade is preferred for battery applications?
PVP K30 is the most commonly used grade. Specification (purity, metal-ion content, moisture, ash) can be tailored for battery-grade requirements on request.
How is PVP used in drilling fluids?
High-molecular-weight PVP (K60–K120) acts as a fluid-loss-control and clay-inhibition additive in water-based drilling muds, stabilizing wellbore walls and reducing filtrate loss into the formation.
Can PVP pair with hollow glass microspheres in oilfield work?
Yes. Our Hollow Glass Microspheres (HGM) lower slurry density for lightweight, high-strength oilfield cementing, and can be combined with PVP-containing formulations for demanding downhole conditions.
What is 2-Pyrrolidone used for in industrial applications?
2-Pyrrolidone is a high-boiling polar solvent widely used in resin, coating, and polymer synthesis — including the recovery of PET and other monomers — valued for its low volatility, strong solvency, and high thermal stability.