CYMEL® 1123 Resin
Knowde Enhanced TDS
Identification & Functionality+
Features & Benefits+
Applications & Uses+
|Value||Units||Test Method / Conditions|
|Viscosity (at 23°C)||3800-10200||mPa.s||DIN EN ISO 3219|
|Color||max. 100||APHA||DIN EN ISO 6271|
|Non-Volatile Content||min. 98||%wt||DIN 55671 (Foil, 45 min/45°C)|
|Free Formaldehyde Content||max. 0.2||%||Sulfite Titration|
|Acrylic resins||Very good|
|Alkyd resins||Very good|
|Polyester resins||Very good|
|Epoxy resins||Very good|
The stability of formulated systems containing CYMEL 1123 resin can be enhanced by the addition of primary alcohols, amines or a combination of these. Low molecular weight primary alcohols, such as ethanol and n-butanol, are most effective. Recommended amines are DMEA or 2-AMP at a concentration of 0.5- 1.0% on total resin solids. Package stability can also be enhanced by the use of a blocked acid catalyst such as CYCAT 4045 catalyst. For waterborne systems, pH should be adjusted to 7.5-8.5 to achieve optimum stability.
CYMEL 1123 resin has a shelf life of 1440 days from the date of manufacture when stored at temperatures below 32°C. Although low temperatures are not detrimental to stability, its viscosity will increase, possibly making the resin difficult to pump or pour. The viscosity will reduce again on warming, but care should be taken to avoid excessive local heat as this can cause an irreversible increase in viscosity.
Technical Details & Test Data+
CYMEL 1123 resin contains mainly methoxymethyl and ethoxymethyl functional sites making it a very effective crosslinker for backbone polymer resins containing hydroxyl, amide or carboxyl functional groups, such as those found on alkyd, polyester or acrylic resins. The effective equivalent weight of CYMEL 1123 resin typically ranges from 120-180, however, its optimum loading should be determined experimentally for each formulation with consideration of the performance properties to be optimized.
CYMEL 1123 resin responds best to sulfonic acid catalysts, like CYCAT® 4040 catalyst, CYCAT 600 catalyst, or CYCAT 500 catalyst. Generally 0.5 to 1.0% catalyst solution on total binder solids of the formulation is sufficient to provide good cure at baking schedules of 20 minutes at 120°C to 160°C. Higher concentrations might be necessary if there are basic pigments or additives present in the formulation.