Biobased epoxy resin composition for adhesive and coating applications
Technology Status: TRL 4 (Technology development)
Sectors of Application: Functional materials, chemistry, polymers, coatings, adhesives, epoxy, resin
The present invention relates to an epoxy resin composition useful as thermoset for paint, coatings or adhesives comprising a polyepoxide derived from poly(limonene carbonate), a 5 polymer derived from biomass (free from bisphenol A and aromatic groups), and a polyamine hardener. It also relates to a polyepoxide compound useful in said composition.
The inventors, after extensive and exhaustive research, have developed a curable composition comprising a polyepoxide having as repeating unit at least an epoxide derived from limonene and an amine hardener. In particular, the inventors found that PLCO and polyepoxides deriving 10 from PLCO, are useful as polyepoxides in the formulation of epoxy thermoset resins comprising polyamine hardeners.
The inventors unexpectedly found that when PLCO and/or polyepoxides deriving from PLCO are combined with at least one polyamine hardener having an Amine Hydrogen Equivalent Weight (AHEW) within a range of 50 to 600 grams per equivalent, the resulting composition is curable and produces materials with suitable 15 mechanical properties. It is advantageous because the produced thermoset materials are not brittle, thereby being suitable for a broad range of applications such as paints, coatings, stoving enamels and adhesives.
The inventors have found in particular that when the amine hardener has a AHEW value that is below 50 or above 600 grams per equivalent, the cured material resulting from the curable composition is brittle. It is unexpected as no disclosure in the art 20 teaches or discloses a curable composition comprising an amine hardener combined with a polyepoxide that is PLCO or derives from PLCO.
Advantages and unique selling points
- Use of circular materials: CO₂ and waste by-product of the agriculture or food industry.
- Green adhesives and coating applications of the final product.
- Alternative to the oil-based materials for greener applications and according to the circular economy.
- Valorisation of CO₂ emissions contributing to climate action policies through the fixation of the CO₂ molecule in the polymer material.
The present technology has a target market in plastics, paints, coatings or adhesive manufacturers.
Type of partnership sought
Partner for joint development and/or commercialisation of products and custom applications of the developed materials is sought.
Global licensing rights for the materials and methods are available.
Regional licensing deals may be considered.
Flexible licensing strategy related to development milestones.
PCT Patent Application WO2023110981A1.
-Applicants: Fundació Institut Català d’Investigació Química (ICIQ) – Institució Catalana de Recerca i Estudis Avançats (ICREA); Universitat Politècnica de Catalunya (UPC).
-Inventors: Arjan Kleij, Jeroen Rintjema, Fernando Bravo Lara, Carles Alemán Llansó, Elaine Armelin Diggroc.
-Priority date: 15 Dec 2021