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Product Info for UNITHANE DULL 4000 NF


UNITHANE DULL 4000 NF is an NMP-free urethane based duller, which is used to dull topcoat formulations for automotive leathers. UNITHANE DULL 4000 NF is a very efficient duller which doesn’t effect physical testing results, and when crosslinked with an isocyanate, will give excellent abrasion resistance and toughness. UNITHANE DULL 4000 NF gives high flexibility and excellent cold crack resistance, and has a soft surface feel.

Industrial Applications:

This product is recommended for: Leather, Automotive Interiors – Leather

Product Characteristics:

Product Class Solids % pH Viscosity @25ºC Gloss VOC g/L Tensile (D-882) Elongation (%) Modulus 100% (psi) Sward Hardness
Finishing 23 – 25 8.0 – 10.0 >200 cps. 0.5-2.5

Full product details can be found in this section:


Special Features: NMP-Free (NF)
Application Types – Leather: Dull, Automotive, Aircraft, Upholstery, Synthetic Leather


Total Solids %: 23 – 25
pH: 8.0 – 10.0
Viscosity @ 25⁰ C: >200 cps.
VOC (% of total weight): 3.5-3.7
Specific Gravity: 1.01-1.03
Appearance: Opaque
Gloss (60): 0.5-2.5
Freeze/Thaw Cycles (D-2243): 0
Shelf Life: Maximum 18 months.
Mix Well Before Using
Harmonize Tariff Number: 3909.50.6000

Certified to ISO-9001:2015

Contact Information:

3 Malcolm Hoyt Drive
Newburyport, Massachusetts 01950 · U.S.A.
Tel: (978) 465-1717 · Fax: (978) 465-4194
E-mail: ·


The information and data contained herein are believed to be correct. However, we do not warrant either expressly or by implication the accuracy thereof.

[Please note that due to the Chinese Trademark Office opposition decision, products destined for the China marketplace in the category of “Adhesives for Industrial purposes: Polyurethane,” will NOT contain the trade name “UNITHANE” but will be labeled only with the letter or number designation. Please contact us if there are any questions. Thank you.]