EP 1636422 A1 20060322 - MICROSPHERES
Title (en)
MICROSPHERES
Title (de)
MIKROSPHÄREN
Title (fr)
MICROSPHERES
Publication
Application
Priority
- SE 2004000835 W 20040601
- EP 03445085 A 20030626
- US 48249703 P 20030626
- EP 04735699 A 20040601
Abstract (en)
[origin: WO2004113613A1] The invention relates to a process for the production of paper or nonwoven from fibres comprising the steps of adding thermally expandable microspheres comprising a thermoplastic polymer shell and a propellant entrapped therein to a stock comprising fibres or to a web of fibres, forming paper or nonwoven from the stock or the web, and applying heat to raise the temperature of the microspheres sufficiently for them to expand and thereby increase the bulk of the paper or the nonwoven, wherein said expandable microspheres comprise from about 17 to about 40 wt% propellant and have a volume-average diameter from about 17 to about 35 µm. The invention also concerns certain expandable microspheres and use thereof.
IPC 1-7
IPC 8 full level
C08J 9/18 (2006.01); D21H 21/54 (2006.01)
CPC (source: EP KR US)
B01J 13/14 (2013.01 - EP US); C08J 9/18 (2013.01 - EP US); D21H 21/00 (2013.01 - KR); D21H 21/54 (2013.01 - EP KR US); D21H 27/30 (2013.01 - EP US)
Citation (search report)
See references of WO 2004113613A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004113613 A1 20041229; CA 2529139 A1 20041229; CN 1813105 A 20060802; EP 1636422 A1 20060322; JP 2007521410 A 20070802; KR 100826419 B1 20080429; KR 20060028774 A 20060403; NO 20060372 L 20060124; US 2006102307 A1 20060518
DOCDB simple family (application)
SE 2004000835 W 20040601; CA 2529139 A 20040601; CN 200480018016 A 20040601; EP 04735699 A 20040601; JP 2006517018 A 20040601; KR 20057024895 A 20051226; NO 20060372 A 20060124; US 50577505 A 20050908