Surface-treated calcium carbonate filler, and resin composition and molded article using same
By performing fatty acid and phosphoric surface treatment on the surface-treated calcium carbonate filler, the problems of insufficient dispersion and poor heat resistance in the resin composition are solved, and high heat resistance and low environmental pollution of the resin composition are achieved.
Patent Information
- Application Number
- CN202380013114.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-05-30
- Filing Date
- 2023-08-29
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2043-08-29
AI Technical Summary
In the prior art, the dispersion of the inorganic filler in the resin composition is insufficient, resulting in poor heat resistance, and residual surface treatment agent leads to clogging of the mold filter, increasing production costs and environmental pollution.
The surface-treated calcium carbonate filler that is surface-treated with fatty acids and phosphoric acids is used to control the amount of surface treatment agent and the treatment conditions, so as to ensure that the BET specific surface area, phosphorus element content and calcification rate of the surface-treated calcium carbonate particles are within a specific range, thereby improving the dispersion of the inorganic filler and the heat resistance of the resin composition.
The uniform dispersion of inorganic fillers in the resin composition is achieved, the heat resistance of the resin composition is improved, the residual surface treatment agent is reduced, the mold filter is blocked, and the production cost and environmental pollution are reduced.