#Search from Developments #Functionality Improvement

Particle Surface Functional Group Addition

Overview

Capable of surface modifications to meet various requirements.
With the control of the particle surface, improvements of handling and adding functionality to applications are expected.

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Developed particle example: Dispersibility improvements in solvents

Dispersibility of resin particles with incompatible solvents are improved by adding functional groups to the particles surface.

Improvement of dispersibility in solvents

Confirmed the dispersibility of SBX-8 in MEK solvent. The developed product with the functional group surface modification has improved dispersibility in solvents compared to the SBX-8, which agglomerated in MEK.

Polystyrene Particles【SBX Series】

SBX Dispersibility Improved Product

Developed particle example: Hydrophilic particles

Dispersibility of the particles are improved by adding hydrophilic groups to the particle surface and is able to disperse well without adding dispersing agents or surfactants.

Improvement of dispersibility in water

MBX-The hydrophilic particles has good compatibility to water compared to MBX-8.

One minute after the addition of the particles into water.

Observation of the liquid after agitation with a microscope (500x).

Expected Effects

Good dispersion on the coating surface.
Smooth even appearance and texture can be obtained.

Product introduction video

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Particle Size Control(Micron, Submicron)
Particle Shape Configuration(Hollow structure, Porus structure, etc.)
Composition Variation(PET, Biodegraable, Biomasuu)
Particle Characteristic Control(Refractive index, Softness)
Stability Improvement(Solvent resitance, UV resistance)
Functionality Improvement(Thermal Conductivity, Functional Group Addition)
Other Technologies
For Cosmetics

Soft Particle Series

Our wide range of products with different compositions offers particles with various softness. The particles increase scratch resistance and adds texture to the coating surface.

Cosmetic ingredients

Grades with residual monomers removed by advance purification processes are available for cosmetic applications. The spherical shape of the “TECHPOLYMER” can improve spreadability of foundations, create a soft-focus effect, and change the texture. Porous particles that can be used as adsorbents, and elastic particles that adds soft feel are also available.

Particle Size Control

“TECHPOLYMER” is available in the size from submicron, micron, and up to millimeter* sizes. The wide product range offers the most suitable size for your application.
* The millimeter sizes are available as a separate product called the “DUOMASTER”.

Particle Shape Configuration

We have successfully established shape configuration technology which enables the control of interior and exterior structure of the particles to develop non-spherical particles, hollow, and porous particles. Non-spherical particles are expected to obtain special optical properties from the special shapes in applications. The porous and hollow particles improve properties such as light diffusion, low permittivity, absorption. These particles are lower specific density according to the air voids within the structure.

Hollow Structure

Porous Structure

Highly Porous Particles

Biconvex Lenticular

Hemispherical

Monodispersed Type

Other Non-Spherical

Composition Variation

Sekisui Kasei has developed various new “TECHPOLYMER” grades that offer new functions and features. We can also develop custom grades for Customer’s special needs. Please contact us to discuss your applications.

Particle Characteristic Control

“TECHPOLYMER” offers a wide range of grades with the properties controlled to suit various applications. For display applications (liquid crystal), many grades are offered by adjusting the refractive index of the particles in order to obtain the desired light diffusion effect. For paints and coatings, various grades are being used in which the hardness of the particles has been adjusted to improve the texture of the coating.

Stability Improvement

“TECHPOLYMER” grades to withstand harsher conditions with higher resistance are available.
Contributes to higher productivity and quality stability of the final product enabling a wider choice of material to use.

Functionality Improvement

Developing high functionality particles by compositing “TECHPOLYMER” with other functional materials.
Other than the functionality of the material, the following are expected from composited particles.

Improvement in handling
Improvement of dispersibility in the matrix
Reduction in the amount of additives

In addition, particles with the characteristics of both the “TECHPOLYMER” and the functional material can be created such as the following:

Anti-blocking property (“TECHPOLYMER”) and conductivity (conductive material)
Light diffusion (“TECHPOLYMER”) and wavelength control (wavelength control material)
Impact resistance (“TECHPOLYMER”) and conductivity (conductive material)

Other Technologies

Capable of customizing our products with various technologies to offer our customers more solutions for their product development.
The following are few examples of our technologies.
Other customizations maybe available, please do not hesitate to contact us.

For Cosmetics

For cosmetic applications, we offer grades that have been highly purified to remove residual monomers. Capable of customizing our products with various technologies to meet your needs. Please contact us.

TECHPOLYMER Sample Request