Patent · US Active

Water-absorbing material having a coating of elastic film-forming polyurethane with high wicking and high permeability

US8889765B2 · kind B2 · utility

0Cited by

3References

22Claims

0Family size

Assignee

BASF SE

Inventors

Yvonne Hagen · Waldsee, DE
Klaus Dieter Hörner · Lampertheim, DE
Axel Meyer · Frankfurt am Main, DE
Robin Lynn McKiernan · Mason, US
Carolyn Ann Spitzmueller · Cincinnati, US

Key dates

Filing date	May 31, 2012
Grant date	Nov 18, 2014
Priority date	—
Expiry date	Sep 2, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2998
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a process for producing a water-absorbing material by coating water-absorbing polymer particles with a film-forming polyurethane and silica, heat treating the coated particles and coating the heat-treated particles with pyrogenic hydrophilic silica. The invention further relates to the water-absorbing material obtainable according to the process of the invention. The water-absorbing material has improved wicking ability (FHA) and core shell saline flow conductivity (CS-SFC).

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