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Transparent polyurethane emulsions (often referred to as Polyurethane Dispersions or PUDs) are advanced, water-based, eco-friendly coating materials used in leather finishing to provide a clear, protective, and aesthetic top layer. They are favored for their ability to maintain the leather’s natural look, grain, and feel while adding high levels of abrasion resistance and durability.
Key Characteristics and Benefits
- Appearance & Feel: These emulsions form a clear, high-transparency film that enhances the natural beauty of aniline or semi-aniline leathers.
Common Applications
Popular Types and Products
- Aliphatic Polyurethane Dispersions: Known for being non-yellowing and offering superior weather resistance.
- Pidithane® A 101 (Pidilite Industries): A clear, aliphatic emulsion creating glossy films with high flexibility.
- Astacin Finish PF TF (BASF): Known for its high lightfastness and heat resistance.
- Yinyang690030: A matte polyurethane top coat used for a soft, natural, and low-key luxury appearance.
- Sinograce PU-403/404: Waterborne resins featuring high transparency, excellent wear resistance, and high-gloss or natural light options.
Application Methods
These emulsions are designed to be user-friendly, allowing for:
These emulsions are designed to be user-friendly, allowing for:
These products are essential for creating durable yet "breathable" leather that retains its original, natural touch.
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Textile & Leather Coatings
Evonik
https://www.evonik.com › application_674249
Evonik
https://www.evonik.com › application_674249
SILIKOPUR® is a waterborne, silicone-modified 1-pack polyurethane emulsion. It provides very flexible coating systems without any tackiness. SILIKOPUR® ...Read more
People also ask
Can I use polyurethane on leather?
Waterborne polyurethane resin is the main material commonly used in leather finishing. It featured good film-forming properties and adhesion power. The coating has high gloss, high wear resistance, high elasticity, water resistance, weather resistance, cold resistance and chemical resistance.
Waterborne Polyurethane Resin for Leather Top Coat
Technical Control
https://www.techcrl.com › waterborne-polyurethane-resi...
Technical Control
https://www.techcrl.com › waterborne-polyurethane-resi...
What are the drawbacks of polyurethane leather?
Cons of PU Leather:
It isn't breathable and may smell of plastic or chemicals. It's prone to cracking and tearing and lacks the durability of real leather. Unlike genuine leather, PU doesn't develop a patina over time. Some PU products may include leftover animal leather, so not all are fully vegan.Jan 14, 2026
It isn't breathable and may smell of plastic or chemicals. It's prone to cracking and tearing and lacks the durability of real leather. Unlike genuine leather, PU doesn't develop a patina over time. Some PU products may include leftover animal leather, so not all are fully vegan.Jan 14, 2026
PU Leather: What Is It & Is It Bad? (2026 Update) - Von Baer bags
Von Baer bags
https://vonbaer.com › blogs › blog › pu-leather
Von Baer bags
https://vonbaer.com › blogs › blog › pu-leather
Web results
Waterborne Polyurethane Resin for Leather Top Coat
Technical Control
https://www.techcrl.com › waterborne-polyurethane-resi...
Technical Control
https://www.techcrl.com › waterborne-polyurethane-resi...
Waterborne polyurethane resin is the main material commonly used in leather finishing. It featured good film-forming properties and adhesion power.Read more
High quality pu resin for synthetic leather ...
Sinograce Chemical
https://www.sinogracechem.com › pu-resin-for-synthetic...
Sinograce Chemical
https://www.sinogracechem.com › pu-resin-for-synthetic...
It is can be formulated as transparent or frost finishes. It forms a hard, durable coating and is resistant to cleaning chemicals. Tags : polyurethane glass ...Read more
DOWSIL™ 5-7310 LF Emulsion
Dow
https://www.dow.com › en-us › pdp.dowsil-5-7310-lf-e...
Dow
https://www.dow.com › en-us › pdp.dowsil-5-7310-lf-e...
Water dispersible, ultra high molecular weight PDMS provides improved wet and dry rub resistance to leather top coating and improves the softness of leather.Read more
Acrylic Finished Leather Upgraded with Thermoplastic ...
ScienceDirect.com
https://www.sciencedirect.com › science › article › pii
ScienceDirect.com
https://www.sciencedirect.com › science › article › pii
by S Sudhahar2024Cited by 11 — The acrylic finished leather with minor defects was taken for 3D printing and designed using Thermoplastic Polyurethane (TPU) as filament.Read more
Ecological leather finishes formulated with polyurethane ...
Leather International
https://www.leathermag.com › analysis › ecological-leath...
Leather International
https://www.leathermag.com › analysis › ecological-leath...
Sep 19, 2001 — They enable high-performance leather finishes to be formulated without causing any unnecessary harm to the environment.Read more
Waterborne Polyurethane Transparent Coatings for Self ...
ACS Publications
https://pubs.acs.org › doi
ACS Publications
https://pubs.acs.org › doi
Waterborne polyurethanes are now widely used for preparing adhesives and coatings. They are considered as a sustainable alternative for solvent-borne ...
Water-Based Polyurethane Resin For Leather Finishing With ...
runxinlianchem.com
https://www.runxinlianchem.com › product › water-base...
runxinlianchem.com
https://www.runxinlianchem.com › product › water-base...
RHERI®L2027 is a water-based aliphatic polyurethane dispersion with glossy and matte application for various soft-feeling coating ,especially for leather ...Read more
Matt Polyurethane Top Coat For Leather
Guangdong Yinyang Environment-Friendly New Materials Co., Ltd
https://www.yinyangpolymers.com › matt-polyurethane-t...
Guangdong Yinyang Environment-Friendly New Materials Co., Ltd
https://www.yinyangpolymers.com › matt-polyurethane-t...
Polyurethane leather finishing agent is mainly water-emulsion type, which is characterized by good film-forming performance, strong covering power, firm ...Read more
Preparation method of matting leather water-based ...
Google Patents
https://patents.google.com › patent
Google Patents
https://patents.google.com › patent
The invention provides a preparation method of a self-dulling leather water-based polyurethane finishing agent. In this method, a polyurethane component A ...