CYMEL® 327 Resin

1 of 102 products in this brand
CYMEL® 327 Resin serves as a crosslinking agent categorized under CASE Ingredients' monomers and intermediates and chain extenders and crosslinkers. Designed for the automotive and transportation and paints and coatings sectors, it's tailored for automotive OEM coatings and coatings and finishes applications. This clear liquid is compatible with acrylics, alkyds, epoxies (EP), and polyesters, specifically for waterborne coatings on metal surfaces.

Functions: Crosslinking Agent

Compatible Polymers & Resins: Acrylics, Alkyds, Epoxies (EP), Polyesters

End Uses: Waterborne Coating

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

CASE Ingredients Functions
Technologies

Features & Benefits

Product Highlights

BENEFITS

  • High solids
  • Fast cure response
  • Low formaldehyde release

APPLICATION AREAS

  • High solids coatings
  • Waterborne coatings
  • Coil coatings and metal decorating
  • Automotive coatings

Applications & Uses

Compatible Polymers & Resins
Compatible Substrates & Surfaces
Coating Type

Properties

Physical Form
Appearance
Clear Liquid
Insoluble in
Aliphatic Hydrocarbons
Partially Soluble in
Aromatic Hydrocarbons
Typical Properties
ValueUnitsTest Method / Conditions
Colormax. 70APHA
Non-Volatile Content88-92%wt
Free Formaldehyde Contentmax. 0.8%
Viscosity (23°C)5100-16000mPa.s
Solubility & Compatibility

SOLUBILITY

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

 

COMPATIBILITY

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

Technical Details & Test Data

Backbone Polymer Selection

CYMEL 327 resin is an effective crosslinker for backbone polymer resins containing hydroxyl, carboxyl, and amide functional groups, such as those found on alkyd, polyester or acrylic resins. Although the optimum level of CYMEL 327 resin should be determined experimentally, ratios of 25 to 35% based on resin solids are typically most effective

Catalysis

CYMEL 327 resin may not require the addition of an acid catalyst to the formulation to obtain effective cure. In many instances, the acidity of the backbone polymer in the formulation is sufficient to catalyze the reaction under normal baking conditions (15-20 minutes at 120-150°C). If catalyst addition is required, then 0.5-1.0% of CYCAT® 296-9 catalyst based on total resin solids is recommended.

Stability

FORMULATION STABILITY

The stability of solvent-borne systems containing CYMEL 327 resin can be enhanced by the addition of primary alcohols, amines, or a combination of these. Low molecular weight primary alcohols such as ethanol or n-butanol are most effective. Recommended amines are TEA or DMEA at a concentration of 0.5-1.0% on total binder solids. For best stability in waterborne systems, a pH of 7.5-8.5 should be maintained using tertiary amines only.

STORAGE STABILITY

CYMEL 327 resin has a shelf life of 720 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.

Storage & Handling

Shelf Life
720 Days