MP GOKYO FOOD&CHEMICAL CO.,LTD List of Products and Services

■ NMP-Free – Safe Product Design ■ Excellent Durability – Heat Resistance, Mechanical Strength, Electrical Properties, Chemical Resistance ■ Reduction of VOC and CO₂ Emissions – Prevention of Air Pollution and Mitigation of Global Warming ■ Use of Recycled Resources – Consideration for SDGs, Circular Economy, and Green Chemistry ■ Room Temperature Storage ＊Please check a brochure

■NMP Free This is a highly safe material that does not contain NMP (N-Methyl-2-pyrrolidone), a solvent commonly used in polyimide varnishes. NMP has a high reproductive toxicity classification of 1B under GHS and is classified as an SVHC (Substance of Very High Concern) under the EU chemical regulation REACH. ■Excellent Durability - Heat Resistance, Mechanical Strength, Electrical Properties, Chemical Resistance This material has high durability comparable to that of conventional solvent-based polyimide varnishes. ■Reduction of VOC and CO2 Emissions - Prevention of Air Pollution, Mitigation of Global Warming Since it does not contain the organic solvent NMP, it is expected to reduce VOC (volatile organic compounds) and indirectly lower CO2 (carbon dioxide) emissions. ■Utilization of Recycled Resources - Consideration for SDGs, Circular Economy, Green Chemistry, etc. There is a sustainable lineup that utilizes scraps from polyimide films. ■Can be Stored at Room Temperature Conventional solvent-based polyimide varnishes require low-temperature storage in refrigeration or freezing to maintain quality, but this product has high stability and can be stored at room temperature. Special management in refrigeration or freezing facilities is not necessary. *Please refer to the PDF document or feel free to contact us.

Polyimide varnish has characteristics of high heat resistance and chemical resistance, making it suitable for a wide range of fields and applications, including high-temperature sliding parts and related components for automobiles and aircraft, heat-resistant coatings, special adhesives, and wire insulation. It is a resin that will continue to be used by leveraging these features in the future. However, the current mainstream products are "NMP solution" or "a mixed solution of NMP and water." *NMP = N-methyl-2-pyrrolidone In recent years, "NMP" has raised concerns about its "toxicity," and it has been listed as a restricted substance under the "REACH regulations" in Europe, and it is expected to have an impact in Japan as well. NMP-free water-based polyimide varnish can contribute to "avoiding the use restrictions of NMP" and "reducing VOCs for environmental improvement." This product is expected to further enhance performance and reduce environmental impact in fields requiring high heat resistance and chemical resistance. It has excellent handling properties due to its stability at room temperature and low viscosity, comparable to general functional coatings. It is also believed to enable applications in processing methods that traditional polyimide varnishes could not be applied to. *For more details, please refer to the PDF document or feel free to contact us.

Currently, many polyimide solutions sold in the market are primarily "NMP solvent" or "a mixture of NMP and water." *NMP = N-Methyl-2-pyrrolidone "NMP" has high solubility and is used in a wide range of applications, including solvents, stripping agents, cleaning agents, and inks. In recent years, concerns about its "toxicity" have arisen, and it has been listed as a "substance subject to restrictions under the REACH regulation" in Europe, and it is expected to have similar impacts in Japan in the future. NMP-free water-based polyimide varnish can contribute to "avoiding the use of NMP" and "reducing VOCs for environmental improvement." Our company offers an "NMP completely free aqueous solution" that utilizes polyamic acid generated by the unique chemical treatment of polyimide film that becomes unnecessary during polyimide film processing. This product forms a polyimide resin coating with an imidization rate of over 90% after being applied to the substrate and dried and cured. 【Representative Product】 Water-based Polyimide Varnish (SC-1901) 【Performance Characteristics】 High heat resistance and chemical resistance materials *For more details, please refer to the PDF document or feel free to contact us.

Our company utilizes polyamic acid generated from polyimide film that becomes unnecessary during polyimide film processing, through a unique chemical treatment, to create an "NMP completely free aqueous solution." This product forms a polyimide resin coating with an imidization rate of over 90% after being applied to a substrate and dried and cured. We are pleased to introduce a new grade of water-based polyimide varnish with improved flexibility. Compared to conventional products, it exhibits better adhesion to various substrates and is less prone to cracking. This document presents the coating properties of the new grade product. [Representative Product] Water-based Polyimide Varnish (SC-2002) [Performance Characteristics] High heat resistance and chemical resistance materials *For more details, please refer to the PDF document or feel free to contact us.

This is a completely NMP-free water-based polyimide varnish. 【Features】 ■ Environmentally friendly water-based polyimide varnish This is an environmentally friendly water-based polyimide varnish that uses NMP made from recycled polyimide film scraps. It does not fall under hazardous materials according to fire safety laws. ■ High heat resistance and chemical resistance It has higher heat resistance and chemical resistance compared to general resins. ■ Can be stored at room temperature Conventional polyimide varnishes have a short quality assurance period and require refrigeration, but this product can be stored long-term at room temperature, making management during storage easier. ■ Suitable viscosity for coating Compared to general polyimide varnishes, this product has a lower viscosity, making it suitable for application methods that could not be used with high-viscosity materials. ■ Proposal for mixing with other resins Mixing with other resin emulsions, such as fluorine-based emulsions, is expected to yield synergistic effects. ■ Improvement of work environment and global environment NMP-free water-based polyimide varnish contributes to "avoidance of NMP usage regulations" and "reduction of VOCs for global environmental improvement." *For more details, please refer to the PDF document or feel free to contact us.

Our water-based polyimide varnish utilizes polyamic acid generated by regenerating polyimide film, which becomes unnecessary during polyimide film processing, through a unique chemical treatment. This product is an "NMP completely free water-based polyimide varnish." After application to the substrate, it dries and cures to form a polyimide resin coating with an imidization rate of over 90%. This document introduces the characteristics of the coating. 【Representative Product】 NMP-free water-based polyimide varnish 【Features】 ■ Environmentally friendly water-based polyimide varnish ■ High heat resistance and chemical resistance ■ Can be stored at room temperature ■ Viscosity suitable for coating ■ Possible mixing proposals with other resins ■ Improvement of working environment and global environment 【Applications】 ■ Wire coating varnish ■ Improvement of heat resistance for paints, conductive inks, and coatings ■ Sliding parts and materials requiring high-temperature resistance for automobiles/aircraft, etc. ■ Adhesives ■ Batteries ■ Heat-resistant paints ■ Prepreg products *For more details, please refer to the PDF document or feel free to contact us.

Our water-based polyimide varnish utilizes polyamic acid generated by regenerating unnecessary polyimide film during polyimide film processing through a unique chemical treatment, making it an "NMP completely free water-based polyimide varnish." After application to the substrate, this product forms a polyimide resin coating with an imidization rate of over 90% upon drying and curing. Coating on substrates that were previously unprocessable due to the influence of "NMP" solvents can now be considered. This document introduces adhesion properties. 【Representative Product】 NMP-free water-based polyimide varnish 【Features】 ■ Environmentally friendly water-based polyimide varnish ■ High heat resistance and chemical resistance ■ Can be stored at room temperature ■ Suitable viscosity for coating ■ Possible mixing proposals with other resins ■ Improvement of working environment and global environment 【Applications】 ■ Wire coating varnish ■ Improvement of heat resistance in paints, conductive inks, and coatings ■ High-temperature resistant sliding parts and materials for automobiles/aerospace, etc. ■ Adhesives ■ Batteries ■ Heat-resistant paints ■ Prepreg products *For more details, please refer to the PDF document or feel free to contact us.

Our water-based polyimide varnish utilizes polyamic acid generated by regenerating unnecessary polyimide film during the processing of polyimide film through a unique chemical treatment, resulting in a "NMP completely free water-based polyimide varnish." This product can bond polyimide films and copper foils just like general-purpose polyimide varnishes. It is also applicable to uses that could not be processed due to the influence of "NMP" solvents. This document introduces adhesive strength and processing conditions. 【Representative Product】 NMP-free water-based polyimide varnish 【Features】 ■ Environmentally friendly water-based polyimide varnish ■ High heat resistance and chemical resistance ■ Can be stored at room temperature ■ Suitable viscosity for coating ■ Mixing proposals with other resins are possible ■ Improvement of working environment and global environmental improvement 【Applications】 ■ Wire coating varnish ■ Heat resistance enhancement for paints, conductive inks, and coatings ■ Sliding parts and materials requiring high-temperature resistance for automobiles/aircraft, etc. ■ Adhesives ■ Batteries ■ Heat-resistant paints ■ Prepreg products *For more details, please refer to the PDF document or feel free to contact us.

This document explains the usage conditions for the environmentally friendly water-based polyimide varnish, so that your company can consider it for your applications, following the flow of "coating method → drying → effects." Compared to general polyimide varnishes, this product has a lower viscosity, making it suitable for processing methods that could not be used with high-viscosity materials. 【Features of this product】 ■ Environmentally friendly water-based polyimide varnish This is an environmentally friendly water-based polyimide varnish that does not use solvents (NMP) derived from recycled polyimide film scraps. It is not classified as hazardous material under fire safety laws. ■ High heat resistance and chemical resistance It has superior heat resistance and chemical resistance compared to general resins. ■ Improvement of working environment and global environment Water-based polyimide varnish can also contribute to "VOC reduction for global environmental improvement." 【Applications】 ■ Wire coating varnish ■ Improvement of heat resistance in paints, conductive inks, and coatings ■ Sliding parts and materials that require high-temperature resistance for automobiles/aircraft, etc. ■ Adhesives ■ Batteries ■ Heat-resistant paints ■ Prepreg products *For more details, please refer to the PDF document or feel free to contact us.

Polyimide varnish has characteristics of high heat resistance and chemical resistance, making it suitable for a wide range of fields and applications, including high-temperature sliding parts and related components for automobiles and aircraft, heat-resistant coatings, special adhesives, and wire coatings. Its use is expected to continue in the future, leveraging these features. Our water-based polyimide varnish utilizes polyamic acid generated by uniquely chemically processing polyimide film that becomes unnecessary during polyimide film processing. It is a water-based polyimide varnish that does not use NMP, which is commonly used as a solvent. This initiative contributes to achieving the SDGs through "using unnecessary polyimide film as raw material (REUSE)" and "reducing VOCs through water-based formulation." This product is expected to further improve performance and reduce environmental impact in fields that require high heat resistance and chemical resistance. Additionally, it has excellent handling properties due to its stability at room temperature and low viscosity, comparable to general functional coatings. It is also believed to enable application to processing methods that conventional polyimide varnishes could not be applied to. *For more details, please refer to the PDF document or feel free to contact us.*