Exploring ways to improve hydrophilic properties on film surfaces

Solutions

Microparticles that can impart hydrophilicity while minimizing changes to the physical properties of the base resin

While gathering information in parallel with the film prototype, members of Company C's research institute attended an online exhibition, where they spotted Nippon Shokubai 's multifunctional hydrophilic fine particles, the RX-6-AQ series, and immediately inquired about details.

The RX-6-AQ series is a multifunctional hydrophilic fine particle with submicron control, developed by Nippon Shokubai using its proprietary technology.

"It features a spherical shape with a sharp particle size distribution, and its low aqueous dispersion viscosity means that it can be easily incorporated into water-based coating agents, which was a problem with conventional hydrophilic organic fine particles. I heard this and immediately decided to order a sample," said Mr. S.

Using samples obtained from Nippon Shokubai, we evaluated their incorporation into coating agents, and were able to impart hydrophilicity while minimizing changes to the physical properties of the base resin.

"These particles blend well with water-based coating agents, have low viscosity, and are easy to handle. We were able to confirm that the contact angle of water on the coating surface is low and that durability against cleaning is improved," said Mr. S.

After reporting the test results at an internal review meeting, instructions were given to adopt coating technology using Nippon Shokubai 's hydrophilic microparticles and proceed with the development of new products. Currently, the research laboratory is making final adjustments toward full adoption.

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