Controlled Release Alliance
Through our global Controlled Release Alliance with DuPont, Colorcon offers an enhanced portfolio of polymers for controlled release drug delivery systems along with application expertise to meet customers’ formulation needs and help speed their products to market.
The CR Alliance includes the exclusive global distribution rights for DuPont products: ETHOCEL™ premium ethylcellulose polymers, METHOCEL™ premium cellulose ethers CR (hypromellose or HPMC) and POLYOX™ water-soluble resins. DuPont offers more than 50 years of experience in production of hypromellose (HPMC), which is the most trusted and widely used polymer for use in controlled release drug delivery systems.
ETHOCEL, METHOCEL and POLYOX polymers offer an outstanding range of controlled release properties for a variety of dosage forms and processing methods. Variations in molecular weights and chemical substitutions provide multiple ways to optimize formulation performance. Each range has fundamentally different hydrophilicity, swelling and erosion characteristics, to provide flexibility in control of the main mechanisms of release.
From January 2017, Colorcon represents AFFINISOL™ Solubility Enhancing Polymers, AMBERLITE™ and DUOLITE™ Ion Exchange Resins™ for pharmaceutical applications.
From April 2019 Colorcon will also represent Aquacoat® ECD for Sustained Release and Aquacoat® CPD for Enteric Coating Applications.
Contact Colorcon to learn more about rate controlling polymers for extended/controlled release drug delivery systems and how our HyperStart® Formulation Service can get your product to market faster and more efficiently.
METHOCEL™/ ETHOCEL™/ POLYOX™ / AFFINISOL™ / AMBERLITE ™ / DUOLITE ™ are registered trademarks of DuPont or its affiliates.
Browse our product listings to learn more:


First choice for the formulation of hydrophilic matrix systems, providing a robust mechanism for the extended/controlled release of drugs from oral…


Now available as directly compressible grades, METHOCEL™ DC2 polymers deliver exceptional flow properties and process capability as well as…


ETHOCEL™ products are water-insoluble polymers approved for global pharmaceutical applications and used in extended release solid dosage…


POLYOX™ Water-Soluble Resins (NF grades) are non-ionic poly (ethylene oxide) polymers. They are hydrophilic polymers available in a wide range of…


AFFINISOL™ Hydroxypropyl Methylcellulose for Hot Melt Extrusion (HME) Poor solubility of active pharmaceutical ingredients (API) is the leading…



Proven Polymers That Provide Formulation Flexibility in Drug Delivery Applications As an excipient, ion exchange resins have a long history, with…


Aquacoat® ECD is an aqueous colloidal dispersion of ethylcellulose polymer. In sustained release applications, Aquacoat® ECD offers stable,…