Solvent-free (ARUFON®)
ARUFON®
Product name ARON®
ARUFON® is a general name for our acrylic polymer products obtained through Uniform Functional Oligomer (UFO) technologies, which are being developed by Toagosei. UFO technology is used to manufacture low molecular weight polymers with 100% efficiency by continuous polymerization of composite materials at high temperatures, especially acrylic monomers.
Characteristics
ARUFON® obtained through UFO technology is 100% polymer, so it is environment-friendly and uses almost no auxiliary materials such as chain transfer agents in accordance with high temperature continuous polymerization procedures, making it an acrylic polymer with superior durability (including weather resistance and heat resistance). Additionally, it is possible to manufacture acrylic polymers over a wide range of glass transition point (Tg) and molecular weight range by using raw materials with different characteristics.
Comparison of characteristics of UFO technologies and current technology (solution polymerization)
| Items for comparison | UFO technology | Current technology | ||
|---|---|---|---|---|
| Manufacturing conditions | Production methods | Continuous or agglomerative | (Semi-)batch | |
| Temperature | High temperature | 50 – 150℃ | ||
| Reaction time | Extremely short | Several hours to several dozen hours | ||
| Auxiliary materials | Polymerization initiator | None / Negligible | % of quantity | |
| Chain transfer agent | None | Small amount to percentage | ||
| Organic solvents | None / small amounts | 0 to 70% | ||
| Product characteristics | Molecular weight | Several hundred to several 10 thousand | Several thousand to slightly over 100 thousand | |
| Molecular weight distribution | Narrow | Wide | ||
| Composition distribution | Narrow | Wide | ||
| Unpleasant odor | Low odor | Mercaptan odor, Solvent odor |
||
| Product forming | ≧ 98% Solid / liquid |
30 – 70% Liquid |
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A sample of an ARUFON® product, made using UFO technology
Enables efficient yields of 100% acrylic polymers.

Applications
- Adhesives, sealant applications
- Plastic modifying applications
- Copolymerization (graft polymer) raw material applications