This professional guide is compiled by Joyforce Industrial, a PVA/PVOH specialist with 25 years of industry experience and a leading provider of fine PVA powder and industrial application solutions globally. PVA 2488 is a high-viscosity partially hydrolyzed polyvinyl alcohol grade widely used in adhesives, paper making, construction materials and personal care industries, playing a key role in delivering strong bonding and film-forming performance. However, many engineers, procurement specialists and industry practitioners have misconceptions about its parameters, selection criteria and reliable Chinese supplier options. This guide combines Joyforce Industrial’s global service experience across 100+ countries to explain PVA 2488 core definition, key parameters, application scenarios, selection tips and compliant supplier requirements, helping you build systematic professional understanding of this material.
Core Definition and Industry Position of PVA 2488
As a partially hydrolyzed polyvinyl alcohol grade, PVA 2488 is defined by standardized hydrolysis degree and viscosity ranges tailored for industrial applications requiring strong bonding and film formation. PVA2488 solves the limitation of low-viscosity PVA grades that cannot meet high-strength bonding or thick film requirements in adhesive and coating formulations.
PVA2488 core industry value lies in three key advantages: first, it delivers higher bonding strength than low-viscosity partially hydrolyzed PVA grades; second, it forms tough, uniform films suitable for coating and packaging applications; third, it provides stable emulsion protection for PVAc and VAE polymerization processes.
Core Differences Between PVA 2488 and PVA 1788
The following table compares PVA 2488 with the widely used PVA 1788 grade to clarify selection differences.
| Technical Indicator | PVA 2488 | PVA 1788 |
|---|---|---|
| Hydrolysis Degree | 87.0-89.0 mol% | 87.0-89.0 mol% |
| Viscosity (4% solution, 20°C) | 44.0-50.0 mPa·s | 20-26 mPa·s |
| Core Application | High-strength adhesives, paper sizing, emulsion protection | General adhesives, textile sizing, low-viscosity formulations |
| Film Strength | High | Medium |
Key Performance Parameters of PVA 2488
Understanding core parameters is critical for correct PVA 2488 selection. The table below lists standardized parameters, industry reference values and selection guidance.
| Core Parameter | Standard Definition | Industry Reference Value | Selection Guidance |
|---|---|---|---|
| Hydrolysis Degree | Mol% of acetate groups converted to hydroxyl groups | 87.0-89.0 mol% | Determines water solubility and moisture sensitivity; select based on required dissolution temperature |
| Viscosity | Flow resistance of 4% aqueous solution at 20°C | 44.0-50.0 mPa·s | Directly impacts bonding strength and film thickness; match to formulation requirements |
| Volatile Content | Moisture and volatile matter percentage | ≤5.0% | Affects storage stability and batch consistency |
| Ash Content | Residual inorganic impurity percentage | ≤0.5% | Impacts purity for sensitive applications like cosmetics and electronic coatings |
| Purity | Active PVA content percentage | ≥93.5% | Ensures consistent formulation performance across batches |
Main Application Scenarios of PVA 2488
PVA 2488 is widely used across multiple industrial sectors, with core scenarios including:
1. Adhesives and Emulsion Polymerization: Serves as a protective colloid for PVAc and VAE emulsions, and a base material for office glue and industrial adhesive formulations.
2. Paper Making: Used for paper sizing and coating applications to improve surface strength and printability.
3. Personal Care: Applied in cosmetic adhesives, mask formulations and cold cream products.
4. Electronic Coatings: Used for display fluorescent pigment coating applications.
Compliance and Supplier Selection Tips for Chinese PVA 2488 Buyers
When sourcing PVA 2488 from China, prioritize suppliers with verified qualifications and application support capabilities. Joyforce Industrial holds SGS Gold Plus Supplier certification, Alibaba Global Excellent Supplier status, utility model patents and software copyrights, with full import and export operation rights.
Joyforce Industrial also supports custom particle size processing from 10 to 500 mesh, OEM processing, and flexible order volumes from sample evaluation to bulk commercial supply, reducing entry barriers for new customers.
FAQ
Q: What is the main difference between PVA 2488 and PVA 1788?
A: Both are partially hydrolyzed PVA grades with the same hydrolysis degree range, but PVA 2488 has a higher viscosity range of 44-50 mPa·s, while PVA 1788 ranges from 20-26 mPa·s. Select the grade based on your required viscosity and application needs.
Q: Can I get custom particle size PVA 2488 from Chinese suppliers?
A: Yes. Joyforce Industrial offers custom particle size control from 10 to 500 mesh, with OEM processing available to match your specific dissolution and dry-mixing requirements.
Q: What technical documents are provided when importing PVA 2488?
A: Standard documents include TDS, SDS/MSDS, COA, product specifications and packaging information, with test reports available when applicable.
Q: What is the typical lead time for PVA 2488 orders?
A: Standard in-stock PVA 2488 orders can be shipped within approximately two weeks, while custom processed products require additional production time.
Contact Us
Official Website: https://www.joyforce.com/
Email: info@joyforce.com
Global Service Hotline:+86-592-5864569
WhatsApp: +86-13859992206
Factory Address: B401, No.96, Xiangxing Road, Torch High Tech Industrial Zone, XiangAn, Xiamen 361101, China
