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

Covestro Desmodur L 75 C Curing Agent

Covestro Desmodur L 75 C is a low-viscosity aliphatic polyisocyanate curing agent from the Desmodur L series, designed for high-performance two-component polyurethane coatings. It delivers excellent weather resistance, gloss retention, and fast ambient-cure capability—ideal for automotive refinish, industrial maintenance, and plastic coatings where durability and clarity are critical.
  • covestro desmodur l 75 c curing agent_254c45bf
  • covestro desmodur l 75 c curing agent_254c45bf

Features Of Covestro Desmodur L 75 C Curing Agent

  1. Aliphatic polyisocyanate-based curing agent offering excellent UV stability and minimal yellowing.

  2. Low-viscosity liquid formulation enabling easy handling, precise metering, and efficient mixing with hydroxyl-functional resins.

  3. Provides outstanding chemical resistance, hardness, and abrasion resistance in cured coatings.

  4. Compatible with a broad range of polyester, acrylic, and polyether polyols for versatile two-component polyurethane systems.

  5. Meets stringent VOC regulations with low monomeric isocyanate content and favorable EHS profile.

Typical Applications Of Covestro Desmodur L 75 C Curing Agent

  1. High-performance industrial maintenance coatings for machinery and equipment.

  2. Automotive refinish clearcoats requiring gloss retention and weather resistance.

  3. Wood coatings for furniture and flooring demanding durability and clarity.

  4. Plastic coatings for automotive interior parts and consumer electronics housings.

  5. General-purpose protective topcoats for metal substrates in architectural and agricultural applications.

Specifications Of Covestro Desmodur L 75 C Curing Agent

Chemical TypeAliphatic polyisocyanate (hexamethylene diisocyanate–based)
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)1.17 – 1.21
Monomeric HDI Content (wt %)< 0.5
Storage Stability (unopened, 25 °C)≥ 12 months


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