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Key organizations include Arkema France, Momentive Performance Materials, L'Oréal, Grant Industries, and various Chinese universities and companies. Their claims focus on using castor oil as a bio-based polyol for polyurethane synthesis, as a vegetable oil in cosmetic formulations, and as a precursor for crosslinked polyesters and other polymers. These claims indicate a broad interest in leveraging castor oil's renewable and functional properties across multiple industries.
Monthly patent filings by domain
Recent patents use castor oil to address several technical problems: replacing petrochemical components with renewable materials in polyurethanes and coatings; improving mechanical strength, durability, and stain resistance in packaging, inks, and adhesives; enhancing antibiotic susceptibility in resistant bacteria like MRSA; and replacing silicones in hair care formulations. These patents claim castor oil as a bio-based polyol or reactive precursor to achieve these properties, indicating a shift toward sustainable material solutions.
Recent patents expand castor oil's role from a direct cosmetic active or emollient to a chemical precursor in industrial applications. It is now claimed as a polyol for polyurethane synthesis, a monomer precursor for acrylates, a crosslinking agent precursor, and a base for bio-based resins. This shift enables its use in high-performance materials like coatings, adhesives, foams, and composites, while still maintaining roles in cosmetics as a vegetable oil for silicone replacement and hair care.
Emerging product categories include bio-based polyurethane coatings, adhesives, foams, inks, and composites for construction, electronics, and packaging. Formulation strategies involve using castor oil as a polyol in polyurethane systems, often combined with other bio-based materials like lignin, soybean oil, or recycled PET. In cosmetics, strategies include anhydrous hair treatments, silicone replacement systems, and ceramide-stabilizing compositions. These approaches aim to enhance sustainability and performance.
Evidence-backed white space exists in developing castor oil derivatives for specialized applications such as antibiotic adjuvants, where it is claimed to enhance susceptibility of resistant bacteria, and in creating bio-based materials for emerging fields like 3D printing and smart packaging. Additionally, its use as a plasticizer precursor in PVC and as a low-temperature resistance agent in adhesives suggests untapped potential in performance materials. These areas show novel claims but limited commercial validation.