Polybutadiene with 1,3-Dioxolan-2-One Groups

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This patent describes a method for producing polybutadiene that is functionalized with 1,3-dioxolan-2-one groups. The process involves first epoxidizing polybutadiene and then converting these epoxy groups into 1,3-dioxolan-2-one groups using either direct reaction with carbon dioxide or by hydrolysis followed by reaction with carbonate derivatives. The resulting functionalized polymer is particularly useful as a membrane material for lithium-ion batteries, fuel cells, or for gas separation applications such as CO2 removal.

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• Membranes in lithium-ion batteries as solid electrolytes
• Polymer electrolyte membranes in fuel cells
• Gas separation membranes, particularly for CO2 separation in industrial processes
• Materials for safer, non-fluorinated polymer components in energy storage and conversion devices
• Replacement for PTFE (Teflon)-based membranes in various electrochemical devices

BenefitsContent extracted from patent full text and abstract with AI.

• Enables manufacturing of non-fluorinated, cost-effective polymer electrolyte membranes, addressing environmental and disposal issues associated with fluorinated polymers.
• The polymer structure prevents the loss of electrolyte materials from the membrane, increasing safety and efficiency.
• Allows simple and scalable production processes using commercially available or easily synthesized polybutadiene.
• Improves the ecological profile—burning does not release toxic fluorine compounds, unlike PTFE-based materials.
• Versatile application: suitable for both energy storage (batteries, fuel cells) and gas separation, especially relevant to CO2 capture and environmental technologies.
• Adjustable polymer properties—molecular weight and functionalization degree can be tailored for specific needs.

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Patent Abstract

The invention relates to a method for producing polybutadiene functionalized with 1,3-dioxolan-2-one groups, consisting of the following steps: a) epoxidation of polybutadiene in order to obtain a polybutadiene with epoxy groups, and b) reaction of the polybutadiene obtained in step (a) with epoxy groups for obtaining the polybutadiene functionalised with 1,3-dioxolane-2-one groups.