Patent · US Active

Method for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution

US9777078B2 · kind B2 · utility

0Cited by

5References

11Claims

0Family size

Assignee

BASF SE

Inventors

Dennis Loesch · Altrip, DE
Volker Seidl · Mannheim, DE
Matthias Weismantel · Bad Orb, DE

Key dates

Filing date	Jul 12, 2007
Grant date	Oct 3, 2017
Priority date	—
Expiry date	Mar 20, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F222/103
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution, where the monomer solution comprises at least two initiators, one of the initiators is a peroxide with the exception of persulfate, and the molar ratio of peroxide to further initiator is at least 1:8, the water-absorbing polymer particles themselves, and hygiene articles comprising these water-absorbing polymer particles.

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