Esta es nuestra última selección de publicaciones y patentes mundiales en inglés sobre Per- y Polyfluoroalkyl (PFAS), entre muchas revistas científicas en línea, clasificadas y centradas en PFAS, Teflon, perfluoroalkyl, polyfluoroalkyl, fluoropolymer, persistent organic pollutant, persistent pollutant, forever chemical, PFOS, PFOA, fluorosurfactant, fluorocarbon, perfluorononanoic y PFNA.
Method of manufacturing integrated circuit device
Patent published on the 2026-06-11 in US under Ref US20260165054 by DAIKIN IND LTD [JP] (Kezuka Takehiko [jp], Mori Haruna [jp], Cho Youn Joung [kr], Chung Wonwoong [kr], Nakamura Shingo [jp], Choi Buseo [kr], Kim Youngseo [kr])
Abstract: A method of manufacturing an integrated circuit device includes selectively etching only a silicon oxide film from among the silicon oxide film and a nitride film on a substrate in a plasma atmosphere by using an etching gas including at least one compound from among hydrofluorocarbons and perfluorocarbons. The etching includes repeating, at least once, one cycle including first to third sub-operations having respective, different combinations of supply gases applied onto the substrate. The firs[...]
Our summary: A method for manufacturing integrated circuits involves selectively etching a silicon oxide film using a specific etching gas in a plasma atmosphere. The process includes multiple cycles with distinct sub-operations utilizing different gas combinations. Each sub-operation employs varying plasma atmospheres to achieve the desired etching results.
etching, integrated circuit, plasma atmosphere, manufacturing
Patent
Resist composition, resist pattern forming method, polymer compound, and fluorine additive component
Patent published on the 2026-06-11 in WO under Ref WO2026121019 by TOKYO OHKA KOGYO CO LTD [JP] (Zhan Yiyang [jp], Kaiho Takaaki [jp], Nakamura Tsuyoshi [jp])
Abstract: The present invention provides a resist composition, resist pattern forming method, polymer compound, and fluorine additive component which are capable of reducing environmental load and achieving both suppression of bridge defects and suppression of WMD required in TC-Less process. The present invention relates to a resist composition which generates an acid upon exposure, with the solubility of the resist composition in a developing solution changed by an action of the acid. The resist composi[...]
Our summary: The invention provides a resist composition that generates an acid upon exposure, altering solubility in a developing solution. It includes a base material, an acid generator, and a fluorine additive component containing a specific polymer compound. The composition aims to reduce environmental impact while minimizing defects in TC-Less processes.
resist composition, polymer compound, fluorine additive, acid generator
Patent
Resist composition and resist pattern formation method
Patent published on the 2026-06-11 in WO under Ref WO2026121018 by TOKYO OHKA KOGYO CO LTD [JP] (Kaiho Takaaki [jp])
Abstract: The present invention relates to a resist composition containing: a base component (A) that exhibits changed solubility in a developing solution under the action of an acid; an acid generator component (B) that generates an acid upon exposure; and a fluorine additive component (F), wherein the fluorine additive component (F) contains a polymer compound (F1) having a constituent unit (f1) represented by general formula (f1-1) in the description, and neither a compound having a perfluoroalkyl skel[...]
Our summary: The invention describes a resist composition with a base component that changes solubility in an acid-developing solution. It includes an acid generator that produces acid upon exposure and a fluorine additive that contains a specific polymer compound. Notably, the composition excludes compounds with perfluoroalkyl or difluoromethyl groups.
resist composition, acid generator, fluorine additive, polymer compound
Patent
Containerized thermal treatment method for contaminated soils and waste containing pfas and similar contaminants
Patent published on the 2026-06-04 in WO under Ref WO2026114526 by HAEMERS TECH SA [BE] (Haemers Jan [be], Saadaoui Hatem [be])
Abstract: The invention relates to a containerized method for the thermal treatment of contaminated solids, pasteous materials, and waste. The system comprises at least one thermally insulated container designed to minimize heat loss and enable material loading from a liftable top panel or a side panel, as well as at least one heat production unit featuring a burner control system and a combustion chamber capable of achieving oxidizing conditions for the complete destruction of contaminants. The method pr[...]
Our summary: This invention presents a containerized method for thermally treating contaminated soils and waste. It features a thermally insulated container and a heat production unit for effective contaminant destruction. The system is portable and modular, allowing for on-site remediation in remote areas.
thermal treatment, contaminated soils, PFAS remediation, containerized system
Patent
Methods and systems for continuous pfas destruction
Patent published on the 2026-05-28 in WO under Ref WO2026112230 by CLAROS TECH INC [US] (Smith Terrance P [us], Breeding Brian [us], Potts Terry Lee [us], Hossen Elvin Haffez [us], Healy Andrew Thomas [us], Liu Zekun [us], Tirado Joseph Reuel Levine [us], Moons Sonja Elise [us], Bloom Evan [us], Piro Mia Christine [us], Mckone James [us])
Abstract: Methods, systems and devices for lowering a concentration of a PFAS in a solution including exposing a treatment solution to a UV light source from one or more lamps in a continuous reactor, the treatment solution comprising a PFAS, an inorganic ion, and having a pH of about 8 or more, and flowing the treatment solution through the continuous reactor at a flow rate of equal to or greater than 18.9 litres per minute (5 gallons per minute) while exposing the treatment solution to the UV light. The[...]
Our summary: The system uses UV light to treat a PFAS-containing solution in a continuous reactor. It operates at a flow rate of at least 18.9 liters per minute. The process achieves over 80% defluorination of PFAS in the treatment solution.
PFAS destruction, UV light treatment, continuous reactor, defluorination
Patent
Flame retardant thermoplastic composition
Patent published on the 2026-05-28 in WO under Ref WO2026109257 by SABIC GLOBAL TECH B V [NL] (Wen Liang [nl], Faber Rein Mollerus [nl], Boonman Rob [nl])
Abstract: The present invention relates to a thermoplastic composition comprising polycarbonate, polycarbonate-polysiloxane copolymer, talc, flame retardant comprising phosphazene, wherein the composition does not comprise per-fluoroalkyl or polyfluoroalkyl substances and has or is selected to have a UL94 flame retardancy rating of V0 measured on an injection molded sample having a thickness of 1.5 mm.[...]
Our summary: The invention describes a thermoplastic composition made of polycarbonate and a copolymer, enhanced with talc and phosphazene as a flame retardant. It specifically excludes per-fluoroalkyl and polyfluoroalkyl substances. The composition achieves a UL94 flame retardancy rating of V0 for a 1.5 mm thick injection molded sample.
flame retardant, thermoplastic composition, UL94 rating, phosphazene
Patent
How Important Is Solid Phase PFAS Release from Legacy Coastal Landfills to the Water Environment?
Published on 2026-02-02 by William M. Mayes, Sebastian J. Pitman, Alex L. Riley, Patrick A. Byrne, Ashley Lily, Adam P. Jarvis, Karen A. Hudson-Edwards, Ian T. Burke @MDPI
Abstract: Historical landfills in coastal environments are at increasing risk of erosion under changing climate conditions. Various studies have highlighted pollutant release associated with potentially toxic elements and flame retardants from such erosional processes, but there has been little focus on per- and poly-fluoroalkyl substance (PFAS) release as a result of physical erosion at such sites, despite landfills being highlighted as a key source of PFAS to the water environment. This study presents a[...]
Our summary: This study assesses PFAS release from historical coastal landfills under erosion. It highlights modest concentrations of PFAS in solid materials from older and more recent landfill sites. The aggregated flux of PFAS from multiple eroding landfills could significantly impact transitional and coastal waters.
PFAS, coastal landfills, pollutant release, environmental regulation
Publication
Occurrence, Composition, and Risk Assessment of Microplastics and Adsorbed Polycyclic Aromatic Hydrocarbons (PAHs) in Urban Drainage Sediments Along the Yangtze River, China
Published on 2026-02-02 by Xiaoyang Bai, Hui Gong, Hongwu Wang, Abdulmoseen Segun Giwa, Emmanuel Alepu Odey, Zhen Zhou, Xiaohu Dai @MDPI
Abstract: Microplastics (MPs) represent pervasive contaminants in aquatic ecosystems, acting as carriers for persistent organic pollutants like polycyclic aromatic hydrocarbons (PAHs). This study systematically investigated the occurrence, composition, and ecological risks of MPs and adsorbed polycyclic aromatic hydrocarbons in urban drainage sediments from three Yangtze River cities: Chongqing (Yongchuan), Changzhou (Jintan), and Shanghai (Tongji University campus). The key findings revealed MPs&[...]
Our summary: This study investigates the occurrence and composition of microplastics and adsorbed polycyclic aromatic hydrocarbons in urban drainage sediments along the Yangtze River. Key findings reveal significant concentrations of microplastics and PAHs, with specific polymers and particle sizes dominating the samples. The research emphasizes the need for targeted management strategies to mitigate ecological risks associated with these contaminants in urban environments.
Microplastics, Polycyclic Aromatic Hydrocarbons, Urban Drainage, Ecological Risk
Publication











