Hokuetsu has patented a water- and oil-repellent agent containing cellulose nanofibers, specific crosslinking agents, and perfluoroalkyl compounds with short carbon chains. The innovative formula aims to enhance repellency properties in various applications. GlobalData’s report on Hokuetsu gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Hokuetsu, H2 storage carbon nanotubes was a key innovation area identified from patents. Hokuetsu's grant share as of March 2024 was 28%. Grant share is based on the ratio of number of grants to total number of patents.
A recently granted patent (Publication Number: US11905650B2) discloses a water- and oil-repellent agent that includes cellulose nanofibers, a crosslinking agent with specific functional groups, and a perfluoroalkyl compound with a perfluoroalkyl group containing 6 or fewer carbon atoms. The agent can be used on various materials like cloth, non-woven fabric, paper, leather, or wood to impart water- and oil-repellent properties. The content of the crosslinking agent and perfluoroalkyl compound is specified in the claims, along with the optional addition of an acrylic compound to the agent.
Moreover, the patent also details a method for producing the water- and oil-repellent agent, involving the mixing of cellulose nanofibers, the crosslinking agent, and the perfluoroalkyl compound. The method includes specific steps like preparing an aqueous dispersion of cellulose nanofibers, adding the crosslinking agent, and subsequently adding the perfluoroalkyl compound. The cellulose nanofibers used in the process can be derived from various sources like thermomechanical pulp or wood flour. The resulting water- and oil-repellent product includes a coating layer containing crosslinked cellulose nanofibers and a perfluoroalkyl compound on a substrate with air permeability, providing enhanced repellent properties.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
