What is papermaking defoamer XS-02, polyether ester defoamer

Papermaking defoamer XS-02 is a high-efficiency nonionic defoamer mainly composed of polyether ester (polyoxyethylene polyoxypropylene ether fatty acid ester), designed for foam control requirements in various sections of the paper industry.

Detailed Description

Papermaking defoamer XS-02 is a professional-grade polyether ester defoamer produced by Haian Guoli Chemical Co., Ltd., with CAS number 9004-81-3. Chemical aliases include polyoxyethylene oleate and polyethylene glycol monooleate. The product appears as a white to light yellow viscous liquid, with good self-emulsifying dispersion performance in water, belonging to the nonionic surfactant defoamer category.

This product uses polyoxyethylene polyoxypropylene ether fatty acid ester as the main component, combining excellent instantaneous defoaming ability with long-lasting foam suppression performance. It performs stably in high-alkali, high-temperature systems such as black liquor and white water, effectively reducing the risk of paper breaks and improving paper machine operating efficiency. Due to its nonionic nature, it has good compatibility with anionic and cationic auxiliaries in the system, as well as various sizing agents and strength enhancers, without easily causing side reactions or precipitation.

From a safety and environmental perspective, XS-02 is a low-toxicity, non-irritating, non-flammable, and non-hazardous substance. It is environmentally friendly to aquatic ecosystems and meets the clean production requirements of the modern paper industry. A single product can cover multiple key processes from pulping black liquor to paper machine white water circulation, coating, and surface sizing, greatly simplifying procurement and inventory management for enterprises.

Technical Parameters

Application Suggestions

Papermaking defoamer XS-02 has broad applicability, with core application scenarios including:

• Pulping Black Liquor: Suitable for high-temperature, high-alkali pulping black liquor environments, effectively eliminating large amounts of foam generated during cooking and washing processes, preventing overflow of black liquor tanks, and ensuring stable operation of the alkali recovery system.
• Paper Machine White Water Circulation: Used in the wet end white water circulation system of paper machines, quickly breaking fine foam and microbubbles in white water, improving fiber and filler retention rates, reducing paper defects, and decreasing fresh water replenishment.
• Coating and Surface Sizing: Efficiently removes bubbles from coatings during paper coating and surface sizing processes, preventing coating scratches, pinholes, and other defects, enhancing coating uniformity and finished paper surface quality.
• Industrial Water Treatment: Applied in industrial circulating water and wastewater treatment processes, suppressing foam generated during aeration and stirring, without adversely affecting microbial flora.
• Water-based Inks and Adhesive Systems: Rapid defoaming and long-term foam suppression, avoiding printing white spots and bonding defects caused by bubbles.

Precautions

• Wear appropriate protective gloves and goggles during operation to avoid direct contact with skin and eyes.
• Ensure good ventilation in the use area to avoid forming aerosols or sprays.
• Keep the container tightly closed during storage in a cool, dry, and dark place, recommended temperature 5~35°C.
• Keep away from heat sources, sparks, open flames, and strong oxidizers.
• In case of leakage, absorb with inert absorbent materials (such as sand, vermiculite) and prevent entry into drains and surface water.