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Waterborne Rewetting Agent

Updated: 2026-08-06

Overview

Waterborne rewetting agents are specialized chemical additives designed to improve the rewetting properties of water-based coatings and paints. These agents are particularly useful in applications where uniform film formation and smooth application are critical. They work by reducing surface tension, allowing the coating to spread evenly and adhere better to substrates. These additives are commonly used in industrial and decorative coatings, inks, and adhesives. Their water-based nature makes them environmentally friendly compared to solvent-based alternatives, aligning with modern regulatory standards for low VOC emissions.

Physical and Chemical Properties

Waterborne rewetting agents are typically clear to slightly turbid liquids with a density ranging from 1.0 to 1.1 g/cm³. They are miscible with water, making them easy to incorporate into aqueous formulations. Their primary function is to lower surface tension, which enhances the wetting and spreading properties of coatings. The chemical composition of these agents often includes surfactants or polymers that interact with the coating matrix to improve performance. While specific molecular formulas and weights vary by product, their effectiveness is generally measured by their ability to reduce surface tension and improve film formation.

Main Applications

Waterborne rewetting agents are widely used in the coatings and paints industry. They are essential for achieving uniform application and preventing defects such as craters or orange peel effects. These additives are particularly valuable in waterborne systems, where surface tension can be a challenge. In addition to coatings, rewetting agents are used in inks and adhesives to ensure smooth application and strong adhesion. Their versatility makes them a staple in industries ranging from automotive to construction, where high-performance coatings are required.

Safety and Storage

While waterborne rewetting agents are generally safer than solvent-based alternatives, proper handling is still essential. Avoid direct contact with skin and eyes, and use in well-ventilated areas to minimize inhalation risks. In case of contact, rinse immediately with plenty of water. Storage conditions should include a cool, dry place away from direct sunlight to maintain product stability. Containers should be tightly sealed to prevent contamination or evaporation. Always follow the manufacturer's guidelines for safe handling and storage.

B2B Procurement Guide

When procuring waterborne rewetting agents, B2B buyers should prioritize compatibility with their specific coating formulations. It's advisable to request samples for testing before large-scale purchases. Verify supplier certifications, such as ISO or REACH compliance, to ensure product quality and regulatory adherence. Price ranges typically vary between $5 and $15 per kg, depending on purity and supplier. Bulk purchases may offer cost savings, but buyers should balance price with performance requirements. Always consider the total cost of ownership, including shipping and handling, when evaluating suppliers.

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