Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- CASE Ingredients Functions
- Type
- Aliphatic Polyester
- Technologies
- Product Families
Features & Benefits
- CASE Ingredients Features
- Advantages
- Low Odor
- Low VOC
- Mar Resistant
- Alkali Resistant
- Abrasion Resistant
- Nonflammable
- Flexibility
- Solvent-free Available
- High Tensile Strength
- Compatibility
- Why are people choosing Waterborne Polyurethane Products?
Waterborne Polyurethanes are fully reacted Urethane polymers dispersed in water. These products contain no residual free isocyanate. These polymers are now being widely used in the coatings and adhesives industries, and are finding their way into other high performance niche applications every day. The reason for this is a simple one. Formulators and end users are coming under constantly increasing pressure to deliver high performance products that are environmentally and user friendly. Waterborne polyurethanes are one of few types of products that can deliver results in both areas.
Waterborne polyurethanes can be selected to deliver high tensile strength, chemical resistance, high elongation, UV resistance, low temperature flexibility, water resistance, abrasion resistance, and/or impact resistance. Most waterborne polyurethanes can be crosslinked in a variety of ways to enhance these properties even further. These properties can be obtained with exceptionally low VOC’s to meet increasingly stringent clean air legislation.
Waterborne polyurethanes are also generally very compatible with many other types of waterborne resins such as acrylics. They are used extensively as a modifier with other resins to enhance properties and lower VOC’s while maintaining a good cost/performance balance.
- Where are Waterborne Polyurethane Products being used?
The following are areas where waterborne polyurethanes have found a home and where the growth potential is still enormous:
Coatings:
- Fabric Coatings and Binders
- Film Coatings
- Leather Coatings
- Metal Coatings
- Plastic Coatings
- Textile Coatings
- Vinyl/Upholstery Coatings
- Wood Coatings
Graphic Arts:
- Inks
- Overprint Varnishes
- Paper coatings
- Wallpaper Varnishes
Adhesives:
- Fabric Binders and Laminating
- Heat Seal adhesives
- Laminating adhesives
- Sole attaching adhesives
- Textile Adhesives
Miscellaneous:
- Cosmetics
- Floor Finishes
- Glass fiber sizing
- Glove Manufacturing
- Rope and Thread Manufacturing
- Soccer Ball Coatings
- What is NMP?
N-Methyl-2-Pyrrolidone (NMP) is the most common co-solvent used in the manufacture of waterborne polyurethane dispersions. The unique properties of NMP aid in both the processing of the polyurethane dispersions as well as the film formation of the applied polyurethane coating. In addition, the NMP can help with substrate wetting, freeze/thaw stability, and adhesion to some substrates.
Applications & Uses
- Applications
- Compatible Polymers & Resins
- Adhesive & Sealant Type
- When Applications Require NMP Free Polyurethanes?
In some applications due to substrate sensitivity to NMP or regulatory constraints, customers may prefer waterborne polyurethanes without this common co-solvent. In response, Bond Polymers International has developed NMP Free waterborne polyurethanes which still contain a co-solvent necessary for proper film formation but utilize an alternate solvent in place of the NMP. The alternate co-solvent also aids in film formation similar to the NMP and has the advantage of being a faster evaporator than NMP resulting in generally faster dry times.
These products are uncompounded waterborne polyurethane resins which may be suitable for some applications as supplied. However, they may require the addition of additives such as wetting agents, defoamers, thickeners, and or other additives to optimize them for your specific application.
- Applications
Coatings
- Flexible Vinyl \ PVC
- Leather Finishes
- Textile Coatings
- Bonded Leather
Adhesives
- Heat Seal Adhesives
- Laminating Adhesives
- Sealants
Properties
- Physical Form
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Co-Solvent | 7.5 | % | — |
| Solids Content | 40.0 | % | — |
| pH Value | 7.0 - 9.0 | — | — |
| Weight (Per Gallon) | 8.79 | lbs. | — |
| Hardness | 8.0 | — | Sward |
| Tensile Strength | 3500.0 | psi | — |
| Modulus (100%) | 670.0 | psi | — |
| Elongation | 650.0 | % | — |
| Viscosity | max. 500 | cps | — |
Regulatory & Compliance
- Certifications & Compliance