Patent · US Active

Method of preparing silicas, silicas with specific pore-size and/or particle-size distributions, and the uses thereof, in particular for reinforcing polymers

US11241370B2 · kind B2 · utility

10Cited by

3References

35Claims

0Family size

Assignee

RHODIA CHIMIE · FR

Inventors

Remi Valero · Val-de-Reuil, FR
Julien Hernandez · Antony, FR

Key dates

Filing date	Jun 22, 2011
Grant date	Feb 8, 2022
Priority date	—
Expiry date	Sep 20, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2982
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The invention relates to a novel method of preparing silicas and to highly-structured silicas having the following characteristics: a specific surface area CTAB (SCTAB) of between 40 and 525 m2/g; a specific surface area BET (SBET) of between 45 and 550 m2/g; an object size distribution width Ld ((d84−D16)/d50), which is measured by XDC particle size analysis after deagglomeration with ultrasound, of at least 0.91; and a pore-size distribution such that ratio V(d5−d50)/V(d5−d100) is at least 0.66. The invention also relates to the use of said silicas as polymer reinforcing fillers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.