Filter material
By using a resin membrane containing cyclic phosphonates and an activated carbon layer as a core layer in automotive air conditioning filters, the problems of insufficient flame retardancy and adsorption are solved, achieving highly efficient flame retardancy and removal of harmful gases.
CN122273181APending Publication Date: 2026-06-26TORAY FIBER RES INST(CHINA) CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- TORAY FIBER RES INST(CHINA) CO LTD
- Filing Date
- 2024-12-24
- Publication Date
- 2026-06-26
AI Technical Summary
Technical Problem
Existing automotive air conditioning filters have unstable flame-retardant properties during combustion and are difficult to effectively remove harmful gases, especially toxic and carcinogenic gases.
Method used
The material layer consists of a nonwoven fabric and a resin film containing phosphate polymers, particularly cyclic phosphonates, combined with an activated carbon layer to improve flame retardancy and adsorption.
Benefits of technology
It achieves high flame retardancy and high adsorption, effectively inhibits the spread of the combustion chain, quickly self-extinguishes, and removes harmful gases such as ammonia, nitrogen dioxide, and toluene, with a removal rate of 40-100%.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure BDA0005207420060000071 
Figure BDA0005207420060000121
Abstract
This invention discloses a filter material comprising a core layer containing a nonwoven fabric and a resin membrane. The resin membrane is present in the nonwoven fabric and is partially or completely permeated within the nonwoven fabric structure. The resin membrane contains a phosphate ester polymer. The filter material of this invention features high flame retardancy and high adsorption capacity.
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