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

Evonik B1358A Blocked Polyurethane Curing Agent

Evonik B1358A is a blocked polyurethane curing agent from the Vestagon® B-series, featuring thermally activated aliphatic diisocyanate chemistry. It enables one-component PU systems with excellent storage stability, low VOC, and smooth film formation. Ideal for automotive coatings, industrial finishes, and powder applications requiring high gloss and chemical resistance.
  • evonik b1358a blocked polyurethane curing agent_d86ec09b
  • evonik b1358a blocked polyurethane curing agent_d86ec09b

Features Of Evonik B1358A Blocked Polyurethane Curing Agent

  1. Highly stable blocked isocyanate chemistry enabling extended pot life at ambient temperature.

  2. Controlled de-blocking activation at 120–140 °C, ensuring reliable crosslinking without premature reaction.

  3. Excellent compatibility with hydroxyl-functional acrylics, polyesters, and alkyd resins.

  4. Low VOC emission profile, supporting compliance with stringent environmental regulations.

  5. Delivers superior hardness, chemical resistance, and gloss retention in cured coatings.

Typical Applications Of Evonik B1358A Blocked Polyurethane Curing Agent

  1. Automotive OEM and refinish clearcoats.

  2. Industrial coil and can coatings.

  3. Wood furniture and flooring finishes.

  4. Plastic coatings for automotive interior parts.

  5. General-purpose high-performance industrial topcoats.

Specifications Of Evonik B1358A Blocked Polyurethane Curing Agent

Chemical TypeBlocked aliphatic polyisocyanate (hexamethylene diisocyanate derivative)
Product FormLiquid
AppearanceClear, pale yellow liquid
Primary ApplicationsTwo-component (2K) polyurethane coating systems requiring thermal curing
Key FeaturesBlocked NCO functionality, low free monomer content, high storage stability
BenefitsImproved handling safety, reduced odor, enhanced film formation and durability
SolubilityCompatible with common organic solvents (e.g., xylene, butyl acetate, PGDA)
Storage ConditionsStore below 30 °C, protect from moisture and direct sunlight


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