Alkaline paper product containing calcium silicate mixtures

EP4771217A1Pending Publication Date: 2026-07-08OMYA INT AG
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
OMYA INT AG
Filing Date
2024-10-09
Publication Date
2026-07-08

AI Technical Summary

Technical Problem

The paper production process faces challenges in maintaining pH levels due to bacterial activity, leading to acidification and reduced effectiveness of additives, which necessitates the use of hazardous chemicals for pH control.

Method used

A paper filler comprising a mixture of three calcium silicate minerals - akermanite, gehlenite, and larnite - is used to provide alkaline properties to paper products, derived from the incineration of de-inked sludge, thereby reducing the need for additional pH control additives.

Benefits of technology

The use of the calcium silicate mineral mixture as a paper filler effectively maintains alkaline conditions, reduces the requirement for hazardous pH control chemicals, and enhances the opacity and brightness of paper products while promoting resource efficiency and circularity in paper production.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure EP2024078409_17042025_PF_FP_ABST
    Figure EP2024078409_17042025_PF_FP_ABST
Patent Text Reader

Abstract

The invention relates to a paper filler comprising a mixture of three calcium silicate minerals being akermanite, gehlenite and larnite, a paper product comprising the paper filler as well as the use of the paper filler as alkaline paper filler in a paper product.
Need to check novelty before this filing date? Find Prior Art