CYMEL® 235 Resin
- CASE Ingredients Functions
- Crosslinking Agent
CYMEL® 235 Resin serves as a pivotal crosslinking agent within the CASE Ingredients framework. As a liquid under the Monomers and Intermediates family, specifically Chain Extenders and Crosslinkers, it is particularly relevant for the automotive, transportation, and paints and coatings sectors. This clear liquid, ideal for top coat applications, is adeptly compatible with acrylics, alkyds, epoxies (EP), and polyesters, showcasing its efficacy on metal and marine surfaces.
Properties
- Physical Form
- Liquid
Product families
Applications
- Marine Coatings
- Marine Coatings
- Marine
Product Families
- Chain Extenders & Crosslinkers
Other characteristics
- Brand
- CYMEL
- End Uses
- Top Coat
- Functions
- Crosslinking Agent
- Compatible Polymers & Resins
- Acrylics, Alkyds, Epoxies (EP), Polyesters
- Markets
- Automotive & Transportation
- Paints & Coatings
- Catalysis
The cross-linking reaction follows the reaction pathway for specific acid catalysis and requires an acid catalyst with pKa value of <1. Strong acids, which include the mineral acids and the organic sulfonic acids such as CYCAT 4040 catalyst, CYCAT 600 and CYCAT 500 catalyst, are the most widely used catalysts for systems using CYMEL 235 resin.
- Stability
FORMULATION STABILITY; Finishes using CYMEL 235 resin as the cross-linking agent can be stabilized very effectively with amines as well as alcohols. In many high-solids formulations it is not practical to incorporate a sufficiently high level of alcohol to maintain adequate enamel stability. Good stability has been obtained in high solids systems by using 25% of the added solvent as primary alcohol such as n-butanol and blocking the acid catalyst with 110% of the stoichiometric equivalent of an amine such as di-isopropanol amine.; STORAGE STABILITY; CYMEL 235 resin has a shelf life of 540 days from the date of manufacture when stored at temperatures between 5°C and 30°C packed in unopened original containers. CYMEL 235 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.
- Appearance
- Clear Liquid
- Shelf LIfe
- 540 Days
- Coating Type
- Top Coat
- Technology
- CASE Ingredients
- HIGHLIGHTS
- BENEFITS
- Good Salt-Spray Resistance
- Low Free Formaldehyde
- Good flexibility properties
- APPLICATION AREAS
- Automotive Top Coat
- AED Coating
- General Metal Finishes
- Backbone Polymer Selection
CYMEL 235 resin is a versatile crosslinking agent for a wide range of polymeric materials containing carboxyl, hydroxyl or amide functionalities such as acrylic, alkyd, polyester and epoxy resins.
- Compatibility and Solubility
- SOLUBILITY
- COMPATIBILITY
- Compatible Polymers and Resins
- Acrylics
- Alkyds
- Epoxies (EP)
- Polyesters
- Compatible Substrates and Surfaces
- Metal
Technical data
Table 1 of 1
4 rows| Characteristic | Value | Unit |
|---|---|---|
| Color | max. 1 | Gardner |
| Non-Volatile Content | min. 97 | %wt |
| Free Formaldehyde Content | max. 0.5 | % |
| Viscosity (25°C) | S-X | — |
