Patent · US Active

Process and apparatus for defined comminution of polymer gels

US7568643B2 · kind B2 · utility

2Cited by

21References

1Claims

0Family size

Assignee

DSM Fine Chemicals Austria NFG GmbH & Co KG · AT

Inventors

Gerhard Schoppel · Wels, AT
Georg Haeubl · Linz, AT
Marion Wagner · Katsdorf, AT
Helmuth Kirsch · Wels, AT
Erich Schulz · Ansfelden, AT
Gerald Summer · Linz, AT

Key dates

Filing date	May 28, 2008
Grant date	Aug 4, 2009
Priority date	—
Expiry date	May 28, 2028

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB30B11/26
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

An apparatus and process for defined comminution of polymer gels, wherein the apparatus includes a static cutting element in the form of a cutting screen. The cutting element is optionally supported, and has pretensioned wires, rods, fibers, wovens, stencils or profiles. Optionally, a dynamic cutting element is provided for shortening the gel strands or particles obtained by means of the static cutting unit. Also, a feed unit is provided for feeding the polymer gel to the static cutting element in a clamped-in, shape-stable state. The feeding of the gel is effected batchwise or continuously.

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