Technical Capabilities

At Microtek we are skilled at selecting and applying the right combination of encapsulation chemistries and methods to create a unique solution to fit your particular needs.

Wall Chemistries

We have years of experience utilizing the following shell wall chemistries: gelatin, polyvinyl alcohol, urea and melamine formaldehyde polymers, acrylics, urethanes, polyurea, synthetic waxes, cellulose acetate butyrate, enteric coatings, nextek and vinyl acetate copolymers.  Please call to discuss other wall chemistries which may of interest in your particular application.

Core Materials

We are experienced at microencapsulating oily and solvent soluble materials as well as water-soluble materials.  We can also encapsulate solid particles.  Please click here for a more thorough list of core material candidates.  Core materials.

Release Mechanisms

Standard release mechanisms include: controlled release, timed release, temperature release, mechanical rupture (impact/shear/pressure/other), chemical release (pH/moisture), or permanent encapsulation capabilities.

Particle Size

Particle sizes can range from less than one micron to over 1,000 microns or greater. 

Delivery Forms

The microencapsulated product can be delivered as a: dry, free-flowing powder, as a slurry, or in the form of a wet filter cake.  For larger particle sizes we offer granules and beads.

Methods of Encapsulation

Microtek services include, but are not limited to: coacervation, polymer-polymer phase separation, interfacial and dispersion polymerization, in situ polymerization, solvent phase separation, desolvation, solvent evaporation, spray drying, spray chilling, matrix encapsulation, various types of fluid bed, extrusion, and various hybrid systems.