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CYMEL® 1123 Resin
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Producer: 
allnex
Brand: 
CYMEL
CYMEL 1123 resin is a highly methylated/ethylated benzoguanamine resin developed primarily for use as a crosslinking agent in electrocoating and conventional coatings requiring high detergent and chemical resistance. Its excellent balance between adhesion and film flexibility, especially after several cure cycles, makes CYMEL 1123 resin particularly well suited for can coating applications. While Cymel 1123 resin is insoluble in water, it shows excellent compatibility with water soluble backbone polymers and provides very good stability in pH-buffered alkaline waterborne formulations. The poor light resistance properties of benzoguanamine makes CYMEL 1123 resin unsuitable for exterior applications.

CYMEL® 1123 Resin

Producer: 
allnex
Brand: 
CYMEL
CYMEL 1123 resin is a highly methylated/ethylated benzoguanamine resin developed primarily for use as a crosslinking agent in electrocoating and conventional coatings requiring high detergent and chemical resistance. Its excellent balance between adhesion and film flexibility, especially after several cure cycles, makes CYMEL 1123 resin particularly well suited for can coating applications. While Cymel 1123 resin is insoluble in water, it shows excellent compatibility with water soluble backbone polymers and provides very good stability in pH-buffered alkaline waterborne formulations. The poor light resistance properties of benzoguanamine makes CYMEL 1123 resin unsuitable for exterior applications.
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Features & Benefits

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Product Highlights

BENEFITS

  • Chemical resistance
  • Detergent resistance
  • Film flexibility

APPLICATION AREAS

  • Anodic electrodeposition
  • Can and container coatings
  • Coil coating finishes
  • High solids primer formulations

Properties

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Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Viscosity (at 23°C)3800-10200mPa.sDIN EN ISO 3219
Colormax. 100APHADIN EN ISO 6271
Non-Volatile Contentmin. 98%wtDIN 55671 (Foil, 45 min/45°C)
Free Formaldehyde Contentmax. 0.2%Sulfite Titration
Physical Form
Liquid
Appearance
Clear Liquid
Insoluble in
Water
Solubility & Compatibility

SOLUBILITY

Alcohol Complete
Esters Complete
Ketones Complete
Aromatic hydrocarbons Complete
Aliphatic hydrocarbons Complete
Water Insoluble

 

COMPATIBILITY

Acrylic resins Very good
Alkyd resins Very good
Polyester resins Very good
Epoxy resins Very good

 

Stability

FORMULATION STABILITY

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.

STORAGE 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

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Backbone Polymer Selection

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.

Catalysis

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.

Storage & Handling

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Shelf Life
1440 Days

Documents (1)

Name
Type
CYMEL® 1123 Resin Technical Data Sheet - EN
Technical Data Sheet