Silica Gel Patent Landscape
Identifiers
Functions
Which organizations and claims shape current development around silica gel?
Adept Materials Inc is prominent, filing multiple patents on silica gel as a reversible moisture regulator in coatings (AU2025207347A1, US2026176482A1, WO2025151562A1). Grace W R & Co claims composite silica particles with wax-filled pores for matting agents (EP3917674B1). Chinese assignees like 宁波大榭开发区综研化学有限公司 (anti-glare suspension) and 金发科技股份有限公司 (polypropylene composite) also contribute. Claims focus on specific particle sizes, pore volumes, surface areas, and concentration ranges, indicating a trend toward precise physicochemical specifications for performance.
How is Silica gel innovation changing in Packaging?
Monthly patent filings by domain
Which technical problems do recent patents address with silica gel?
Recent patents address moisture regulation, surface aesthetics, and material emission control. Silica gel is claimed to reversibly adsorb and desorb water in liquid coatings for humidity buffering (AU2025207347A1, US2026176482A1, WO2025151562A1). It is also used as an anti-glare particle in suspensions (CN122502933A) and as a pore-filling component in composite matting agents (EP3917674B1). In polypropylene composites, silica gel adsorbent is paired with carbon nanotubes to solve emission problems and form a physically cross-linked structure (CN122344374A). A self-moisture-absorbing membrane uses micronized silica gel with calcium chloride for high moisture absorption (CN117841492B).
How do recent patents change the role or application of silica gel?
Silica gel is shifting from a passive desiccant to an active, reversible moisture regulator integrated into coatings and films. Patents by Adept Materials Inc claim silica gel that reversibly adsorbs and desorbs water, enabling humidity control in decorative paints and liquid coatings (AU2025207347A1, US2026176482A1, WO2025151562A1). This contrasts with traditional static desiccant use, as seen in self-moisture-absorbing membranes (CN117841492B). Additionally, silica gel is used as a functional particle for anti-glare and matting effects (CN122502933A, EP3917674B1), and as an adsorbent in polymer composites to address emissions (CN122344374A).
How is Silica gel used in Packaging patents?
Which Packaging product categories feature Silica gel in recent patents?
Which product categories and formulation strategies emerge in recent work on silica gel?
Emerging product categories include decorative paints, liquid coatings, anti-glare films, matting agents, polypropylene composites, and moisture-absorbing membranes. Formulation strategies involve combining silica gel with polymeric binders and water in coatings (AU2025207347A1, US2026176482A1), using silane coupling agents to modify anti-glare particles (CN122502933A), filling porous silica with waxes for matting (EP3917674B1), and blending silica gel with carbon nanotubes in composites (CN122344374A). In membranes, micronized silica gel is combined with calcium chloride in a specific ratio (CN117841492B).
Where is the evidence-backed white space for further development of silica gel?
Evidence suggests white space in combining silica gel's moisture-regulating function with other active properties, such as anti-microbial or self-healing capabilities, which are not addressed in current patents. Additionally, while silica gel is used in coatings and composites, its integration into flexible electronics or smart packaging with sensor functions remains unexplored in the provided patents. The focus on specific particle sizes and pore volumes indicates potential for tailored silica gel grades for niche applications.