Patent · US Active

Method for making water-absorbing polymer particles having areas with inorganic solid particles and areas substantially free of inorganic solid particles

US10736986B2 · kind B2 · utility

1Cited by

24References

17Claims

0Family size

Assignee

The Procter & Gamble Company · US

Inventors

Arsen Arsenov Simonyan · Schwalbach, DE
Juliane Kamphus · Schwalbach, DE
Josef Breu · Bayreuth, DE

Key dates

Filing date	Apr 17, 2018
Grant date	Aug 11, 2020
Priority date	—
Expiry date	Jul 30, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2333/02
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method for making water-absorbing polymer particles is provided and includes a first aqueous polymerization solution including crosslinkers, polymerizable monomers and/or oligomers and inorganic solid particles, and a second aqueous solution including inorganic solid particles, crosslinkers and either polymerizable monomers and/or oligomers, or crosslinkable polymers. The average closest distance between two neighboring crosslinkers (RXL) from the first aqueous polymerization solution or from the second aqueous solution for a specific X-load of the water-absorbing polymer particle is calculated via the formula below:

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