Product Finder for All Products

Back to All Products

Product Info for UNITHANE F-40 NF


UNITHANE F-40 NF is a soft, small particle size, light fast waterborne polyurethane that is N-Methyl-2-Pyrrolidinone free. It is designed for use in base coat or topcoat formulations where it will improve adhesion and flexibility when used in conjunction with acrylic dispersions. UNITHANE F-40 NF has excellent adhesion properties on oil pull-up type leathers and can be used with or without solvent. If solvent must be used it is recommended to use in the ration 1 part UNITHANE F-40 NF with 1 part suitable solvent and 1 part water. Where ecology considerations are necessary propylene glycol is a recommended solvent. If it is used without solvent the recommended ratio is 1 part UNITHANE F-40 NF and 3 parts water. For best adhesion to oily and waxy leathers we suggest swabbing although spraying can also be done especially if solvent is used.

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 24 – 26 8.0 – 10.0 10 – 200 cps 80-100

Full product details can be found in this section:


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


Total Solids %: 24 – 26
pH: 8.0 – 10.0
Viscosity @ 25⁰ C: 10 – 200 cps
VOC (% of total weight): 7.6-7.9
Specific Gravity: 1.01-1.04
Appearance: Semi-translucent
Gloss (60): 80-100
Freeze/Thaw Cycles (D-2243): 0
Shelf Life: Maximum 12 months
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.