CYMEL® 250

CYMEL® 250 Resin is a new type of mixalkylated methylated and n-butylated melamine formaldehyde resin with high imino functions. It is designed specifically for automotive coating system and does not require a strong acid catalyst for fast cure response. CYMEL® 250 Resin is similar reactivity to conventional n-butylated melamine resin. A formulation by using CYMEL® 250 Resin can achieve lower VOC, compared to a formulation by using conventional n-butylated melamine formaldehyde resin.

Principal: allnex Crosslinkers

Functions: Crosslinking Agent

Chemical Family: Melamine Formaldehydes (MF)

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

End Uses: Base Coat, Primer, Surface Coating

Labeling Claims: Low VOC

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Enhanced TDS

Identification & Functionality

Blend
No
CASE Ingredients Functions
Chemical Family
Function
Crosslinking Agent
Product Code
MITM11146
Single Ingredient
Yes
Technologies
Product Families

Features & Benefits

CASE Ingredients Features
Labeling Claims
Product Benefits
  • Fast low temperature cure response
  • Superior humidity and water resistance
  • Lower VOC than conventional butylated melamine resins

Applications & Uses

Coating End Applications
Compatible Polymers & Resins
Markets
Applications
Product Applications
  • Automotive primer/surfacer
  • Automotive basecoat
Formulation Information
  • The stability of solvent-borne systems containing CYMEL® 250 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 TEA, DMEA or 2-AMP at a concentration of 0.5-1.0% on total binder solids.

Properties

Physical Form
Soluble In
Catalysis Information
  • CYMEL® 250 Resin responds to catalysis by weak acids.
  • At baking temperatures above 120°C, the carboxyl functionality of the other resins in a formulation would be an adequate catalyst.
  • If catalyst is necessary, any soluble acid would be effective.
  • Normally, phosphate esters such as CYCAT 296-9 are recommended.
  • The acid concentration would have been determined for each system.
Backbone Polymer Selection
  • CYMEL® 250 Resin resin is an efficient cross-linking agent for hydroxyl, amide, carboxyl, functional polymers or resins.
  • Similar to other melamine resins with reactive functions, it is not only crosslinks with the above functionalities, but also self- condenses readily.

Regulatory & Compliance

Certifications & Compliance
Contains any chemicals listed on Prop 65 (including impurities, residues, catalysts, monomers, and by-products and excluding heavy metals)?

Principal Information

Group Principal Number
S000001
Principal

Storage & Handling

Storage Conditions
  • CYMEL® 250 Resin has a shelf life of 1 year from the date of manufacture when stored at temperatures between 5°C and 30°C packed in unopened original containers .
  • CYMEL® 250 Resin must be kept indoors and avoided the direct sunlight exposure.
  • Although lower 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.

Other

Appearance
Clear liquid
Appearance (SDS)
Liquid
Color (SDS)
Colorless
IATA/ICAO Proper Shipping Name
Resin solution
IATA/ICAO UN Number
UN1866
IMO/IMDG Proper Shipping Name
Resin solution
IMO/IMDG UN Number
UN1866
Insoluble in (SDS)
Water
Odor (SDS)
Formaldehyde and solvent
Other Hazards
Not applicable
TDG Canada Proper Shipping Name
Resin solution
TDG Canada UN Number
UN1866
USA/DOT Proper Shipping Name
Resin solution
USA/DOT UN Number
UN1866
Optical Properties
ValueUnitsTest Method / Conditions
Color Scalemax. 1.0GardnerGardner Color Scale
Chemical Properties
ValueUnitsTest Method / Conditions
Free Formaldehyde Contentmax. 1.0%ISO 11402
Shelf Life & Stability
ValueUnitsTest Method / Conditions
Shelf Life1.0yr
Material Composition
ValueUnitsTest Method / Conditions
Non-Volatile Content68.5-72.5%(W/W)at 105°C, 180 min, Pan
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Autoignition Temperature (SDS)343.3°C
Boiling Point (SDS)117.2°C
Density (SDS)1.07-1.1g/cm³
Flash Point (SDS)32.0°CSetaFlash Closed Cup
Volatile Content (SDS)28.0-33.0%