Add protective, functional value with our polyurethane resins

Add protective, functional value with our polyurethane resins

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Our aliphatic and aromatic polyurethane resins to add effective protective properties such as adhesion promotion and good print retention and flexes, primarily for sealer and base coats of full grain leather, corrected grain leather and skins. Our range includes solutions from our Astacin® and Melio® portfolios. Whether you need an adhesion promoter, a base coat, a dull base coat, cationics, or a beauty maker, we have the product to meet your protective and functional needs.

Product
Type
Main features
Adhesion Promoters
Astacin® Ground UH TF Aromatic Adhesion promoter - Suitable for oil and waxy leathers.
Melio® Promul® AP-39.A Aromatic Adhesion promoter - Suitable for oil and waxy leathers.
Melio® Promul® 53.A Aliphatic Adhesion binder, excellent polishing and glazing behavior.
Melio® Promul® 59 Aliphatic Adhesion promoter - Good water and solvent resistance.
RU-43-961 Aromatic Adhesion promoter - Natural look.
RU-43-989 Aromatic Adhesion promoter - Natural look.
RU-49-126 Aliphatic Adhesion promoter suitable for WR and Cr Free leathers.
RU-74-987 Aliphatic Adhesive for foil.
Base Coats
Astacin® Finish PE Aliphatic High performance PUD with good fastness properties.
Astacin® Finish PS Aliphatic High performance PUD - Good resistance to waterspotting.
Astacin® Finish PT Aliphatic High performance PUD with good fastness properties.
Astacin® Finish PUM TF Aliphatic Universal resin - Good properties.
Astacin® Finish PUMN TF Aliphatic Universal resin - Good properties.
Astacin® Finish SUSI TF Aliphatic High performance PUD for elegant finishes.
Melio® Promul® 32 Aromatic Flesh side binder to fix dust and fibers.
Melio® Promul® 61 Aliphatic Very good print retention and high flexes.
Melio® Promul® 66.A Aliphatic Good print retention - Good overall properties.
Melio® Promul® 67.B Aliphatic Universal resin - Good properties.
Melio® Promul® 68.A Aliphatic Good flex - Good cold crack/flex - Good overall performances.
Melio® Promul® 95.A Aliphatic High hydrolysis resistance for high performance.
RU-3901 Aliphatic Polyether - Good flex - Good cold crack/flex.
RU-3904 Aliphatic Polyether - Good fastnesses.
RU-13-054 Aliphatic To produce Nubuck effect.
RU-13-134 Aliphatic Good adhesion - Good cold crack/flex.
RU-13-734 Aliphatic Very good flexes.
RU-22-537 Aliphatic Good print retention - Good overall properties.
RU-43-116 Aliphatic Very good flexes.
RU-73-901 Aliphatic Polyether - Good wet and dry flex - Good cold crack/flex.
Dull Base Coats
Astacin® Finish PTM Aliphatic High performance PUD with good fastness properties - Cold crack and adhesion.
RU-13-541 Aliphatic PolyMatte® - Natural look.
Cationics
RU-17-100 Aliphatic Very light finishes - Good overall properties and dry milling.
RU-17-107 Aliphatic Light finishes with good adhesion.
RU-47-702 Aliphatic Non highlighting leather defects - Good adhesion.
Beauty Maker
BM-904-RU Aliphatic Non highlighting leather defects - Good adhesion.
BM-991-RU Aliphatic Good adhesion - Good coverage - Natural look.
Melio® Promul® 70 Aliphatic Polishing binder, also for all thin, elegant finishes.

Learn all about our polyurethane resins and their properties by downloading the catalog.


High-gloss adhesion promoters for very soft to soft film hardness

When looking for polyurethane adhesion promoters with high gloss and soft film hardness for use sealer and base coats, we can help with that. Our solutions include products from our Astacin® and Melio® portfolios, and both aromatic and aliphatic resins. Most of these resins have a fine particle size. This range includes products suitable for oil and waxy leathers, WR- and chromium-free leathers, and foil, as well as resins that produce a natural look.


High-performance polyurethane dispersion base coats

Stahl has an extensive range of base coats including products from our Astacin® and Melio® portfolios, which are primarily designed for full and corrected grain leathers, and are ideal for a range of applications, including automotive. These resins are high-performance polyurethane dispersions which can provide beneficial properties like fastness, waterspotting resistance, print retention, and high flexes.


Dull base coats for natural finishes

Stahl offers two dull base coats that are suitable for a range of applications. Our Astacin® Finish PTM can be used for base or top coats and offers excellent fastness, cold crack and adhesion properties. Our RU-13-541 produces a natural effect using our PolyMatte® technology.


Light-finish cationics

Stahl’s cationics can be used in sealer and base coats for all types of leather to create high-performance light finishes, often with strong adhesion. In particular, our RU-47-702 is used for non-highlighting leather defects.


Beauty makers for elegant finishes

Stahl’s beauty makers are for sealer and base coats for full grain leather or skins. They offer good adhesion, with our BM-904-RU used for non-highlighting leather defects, and our Melio® Promul® 70 acting as a polishing binder for fine, high-end finishes.


Stahl’s polyurethane resins are part of our Stahl Neo® portfolio, which means that they comply with the ZDHC MRSL.


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Add protective, functional value with our polyurethane resins
Joachim Henkmann
Global Marketing - Business Unit Leather Chemicals