New binding composition for several applications
Patent Information
- Application Number
- PL2021727166T
- Authority / Receiving Office
- PL · PL
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2021-05-24
- Filing Date
- 2021-05-24
- Publication Date
- 2026-07-06
- Estimated Expiration
- 2041-05-24
AI Technical Summary
Existing binding compositions for mineral fibrous materials, such as phenolic resole-based resins, release harmful formaldehyde emissions during the cross-linking process, which is a concern for environmental regulations and the mechanical strength of the final product is not comparable to phenolic resin-based compositions.
A formaldehyde-free aqueous binding composition comprising reducing sugars, ammonium sulphamate, a pH-adjusting agent, and a resin pre-condensate obtained by reacting a polyaldehyde, urea, and lignin sulphonate, which provides improved binding strength and mechanical properties without releasing significant formaldehyde emissions.
The composition achieves binding strength comparable to phenolic resin-based products while ensuring minimal formaldehyde release, resulting in fibrous materials with enhanced tensile and compressive strength, compliant with stringent environmental regulations.