Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Covestro Desmodur 3133 Curing Agent

Covestro Desmodur 3133 is a high-performance aliphatic polyisocyanate curing agent from the Desmodur® series, designed for premium two-component polyurethane coatings. It delivers excellent UV stability, gloss retention, and chemical resistance—ideal for automotive clearcoats, industrial finishes, and high-durability applications requiring low VOC and fast curing.
  • covestro desmodur 3133 curing agent_bae744e5
  • covestro desmodur 3133 curing agent_bae744e5

Features Of Covestro Desmodur 3133 Curing Agent

  1. Aliphatic polyisocyanate-based curing agent offering excellent UV stability and color retention.

  2. Low viscosity enables easy handling, precise metering, and improved formulation compatibility.

  3. Reacts efficiently with hydroxyl-functional resins to deliver durable, flexible coatings with high gloss.

  4. Compliant with major global regulatory frameworks for industrial coating applications.

  5. Designed for ambient- and forced-dry curing systems without requiring excessive catalyst loading.

Typical Applications Of Covestro Desmodur 3133 Curing Agent

  1. High-performance clearcoats for automotive refinish and OEM plastic parts.

  2. UV-resistant topcoats for architectural metal cladding and façade systems.

  3. Durable protective coatings for outdoor furniture and garden equipment.

  4. Industrial maintenance coatings for machinery and agricultural equipment.

  5. Two-component polyurethane coatings for composite and fiberglass substrates.

Specifications Of Covestro Desmodur 3133 Curing Agent

Chemical TypeAliphatic polyisocyanate (hexamethylene diisocyanate trimer)
Product FormLiquid
AppearanceClear, pale yellow liquid
NCO Content (wt %)15.5 – 16.5
Viscosity at 25 °C (mPa·s)800 – 1,200
Density at 20 °C (g/cm³)1.20 – 1.24
Solvent ContentNon-solvented (100% solids)
Primary Applications2K PU clearcoats, protective topcoats, plastic coatings


Get in Touch with ERICW
Let competitive chemical materials go global.

Your Name *

Your Email *

Your Phone

Country

Your Message *