Polypropylene resin foam particles, polypropylene resin foam molded articles, and methods for producing polypropylene resin foam particles
By integrating recycled polypropylene and polyethylene resins with carbon black and a hindered amine flame retardant, the polypropylene resin foam particles achieve enhanced flame retardancy and sustainability in molded articles.
JP7869415B2Active Publication Date: 2026-06-02KANEKA CORP
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- KANEKA CORP
- Filing Date
- 2026-01-14
- Publication Date
- 2026-06-02
AI Technical Summary
Technical Problem
Polypropylene resin foam molded products made using recycled resin lack sufficient flame retardancy, necessitating improvements for enhanced properties.
Method used
Incorporation of polypropylene resin foam particles containing a base resin composed of non-recycled and recycled polypropylene and/or polyethylene resins, along with carbon black and a hindered amine-based flame retardant, with specific ratios and particle size distributions of carbon black for improved flame retardancy and environmental sustainability.
Benefits of technology
The solution provides polypropylene resin foam molded articles with superior flame retardancy and environmental benefits by utilizing recycled materials, reducing plastic waste and contributing to sustainable development goals.
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Smart Images
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Abstract
The objective is to provide polypropylene resin foam particles that can provide polypropylene resin foam molded articles containing recycled resin and exhibiting excellent blackness and flame retardancy. [Solution] A base resin containing a predetermined amount of recycled resin and carbon black, wherein the structure size per structure is 1 × 10 in relation to the total number of carbon blacks. 4 nm 2 The present invention provides polypropylene resin foam particles in which the ratio of carbon black particles less than 10% to 50%.
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