Polyalkylene Glycol (PAG) Release Agent is a liquid non‑silicone functional processing additive based on polyether structure. Unlike traditional silicone‑based release agents which leave persistent silicone residues on component surfaces, this PAG release agent can form temporary lubricating isolation film during molding. It delivers excellent mold‑release performance for rubber and polyurethane systems. After demolding, there will be no stubborn residual layer on the finished part surface, so m

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Product Detail Page: Polyalkylene Glycol (PAG) release agent is synthesized by ring‑opening polymerization of alkylene oxide monomers under controlled catalytic conditions. Finished liquid product is filtered and de‑odorized. Each production batch is tested for hydroxyl value, viscosity, moisture content, thermal stability, mold‑release efficiency, surface residue property and post‑adhesion painting compatibility to ensure stable processing performance for rubber and polyurethane manufacturing.

Rubber and polyurethane molding production faces well‑known technical constraints. Conventional silicone‑containing release additives create durable silicone residues on the surface of demolded components. Those silicone residues severely weaken adhesive strength and cause craters, fish‑eyes and pin‑hole defects during subsequent spray painting. Additional solvent‑based degreasing and cleaning procedures become mandatory, increasing production cycle time and manufacturing cost. When rubber or polyurethane raw stock exhibits poor fluidity, high internal viscosity leads to incomplete mold filling for intricate molded parts. During long‑run molding, gradual accumulation of decomposition by‑products generates stubborn mold deposits, which requires frequent mold disassembly and cleaning, lowering overall equipment utilization rate. Many hydrocarbon‑based release additives tend to migrate and form oily films, which also interfere with post‑bonding and painting workflows.

When PAG release agent is incorporated into rubber compound during kneading, or blended into liquid polyurethane casting stock before pouring at the recommended addition dosage, it distributes uniformly within the polymer system. During the high‑temperature molding and curing cycle, partial PAG migrates toward the interface between polymer stock and hot mold surface to build a temporary lubricating isolation film. This thin film reduces interfacial adhesion between cured polymer and mold metal, enabling smooth demolding of complex rubber and polyurethane molded articles. Meanwhile, the major portion of PAG remains dispersed inside the polymer matrix and participates in internal lubrication, effectively lowering melt or casting‑stock viscosity, improving flow behaviour and facilitating complete filling of fine mold cavities. After demolding, the temporary interfacial PAG film does not form persistent oily or silicone‑rich residues on component surfaces. It either partially diffuses back into the bulk polymer or can be readily dissipated, so finished molded parts maintain suitable surface properties for subsequent adhesive bonding and top‑coat painting.

Precise dosage control is essential for formulation design. Under‑dosage leads to insufficient mold‑release capacity, serious mold sticking and frequent mold fouling. Excessive loading will increase plasticizing effect inside rubber or polyurethane matrix, negatively influencing hardness, compression‑set resistance and mechanical properties of finished components. Laboratory mixing, molding and subsequent painting‑bonding validation trials are strongly recommended before formal mass‑scale production. This PAG release agent can be used together with rubber vulcanizing agents, accelerators, polyurethane catalysts, antioxidants and reinforcing fillers.

For compounding operations, liquid PAG release agent is charged during rubber internal kneader or open‑mill mixing; for polyurethane processing, it is metered and stirred uniformly into polyol component before casting.

Seal the liquid product tightly for storage. Prevent moisture ingress. Avoid prolonged exposure to high ambient temperature.

Major application fields: residue‑free internal mold‑release additive for molded technical rubber parts requiring post‑painting and bonding; processing lubricant for cast polyurethane elastomer components; non‑silicone release auxiliary for rubber‑polyurethane composite molding.

Store the product in tightly‑sealed original drums within 15‑30℃, maintain dry storage and avoid direct sunlight.

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Polyalkylene Glycol (PAG) Release Agent, No Residue for Rubber & Polyurethane Post-Bonding & Painting

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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.