EP 1055029 A1 20001129 - PROCESS FOR PRODUCTION OF STABLE AQUEOUS DISPERSIONS FOR SIZING PAPER
Title (en)
PROCESS FOR PRODUCTION OF STABLE AQUEOUS DISPERSIONS FOR SIZING PAPER
Title (de)
VERFAHREN ZUR HERSTELLUNG VON STABILEN, WÄSSRIGEN DISPERSIONEN FÜR DIE PAPIERLEIMUNG
Title (fr)
PROCEDE DE PREPARATION DES DISPERSIONS AQUEUSES STABLES DESTINEES AU COLLAGE DU PAPIER
Publication
Application
Priority
- AT 9900019 W 19990125
- AT 11898 A 19980126
Abstract (en)
[origin: US6380299B1] A method for preparing a paper sizing agent which has improved retention on paper and which is an aqueous dispersion stabilized with a polymer, including the steps of (a) dispersing a resin which is one of a colophonium resin or a compound derived from a colophonium resin in water containing a synthetic emulsifier present in an amount which is a minimal amount effective to prepare a metastable dispersion of the resin so that impairment of sizing action by the synthetic emulsifier is minimized; (b) immediately cooling the metastable dispersion to a cooled temperature; and (c) reacting the metastable dispersion while at a cooled temperature with a polymer which is one of a polymer solution or a polymer dispersion to form a stable dispersion, wherein direct dispersion of the polymer with the resin is avoided.
IPC 1-7
IPC 8 full level
C08J 3/03 (2006.01); C08K 5/1539 (2006.01); D21H 21/16 (2006.01); D21H 17/14 (2006.01); D21H 17/16 (2006.01); D21H 17/17 (2006.01); D21H 17/29 (2006.01); D21H 17/60 (2006.01); D21H 17/62 (2006.01); D21H 17/66 (2006.01)
CPC (source: EP US)
C08J 3/03 (2013.01 - EP US); C08K 5/1539 (2013.01 - EP US); D21H 21/16 (2013.01 - EP US); C08J 2393/00 (2013.01 - EP US); D21H 17/14 (2013.01 - EP US); D21H 17/16 (2013.01 - EP US); D21H 17/17 (2013.01 - EP US); D21H 17/29 (2013.01 - EP US); D21H 17/60 (2013.01 - EP US); D21H 17/62 (2013.01 - EP US); D21H 17/66 (2013.01 - EP US); D21H 17/72 (2013.01 - EP US); D21H 17/74 (2013.01 - EP US)
Citation (search report)
See references of WO 9937857A1
Designated contracting state (EPC)
BE CH DE ES FI FR GB IT LI NL PT SE
DOCDB simple family (publication)
US 6380299 B1 20020430; AT 406492 B 20000525; AT A11898 A 19991015; BR 9907261 A 20001114; CA 2319124 A1 19990729; EP 1055029 A1 20001129; WO 9937857 A1 19990729
DOCDB simple family (application)
US 60103100 A 20000726; AT 11898 A 19980126; AT 9900019 W 19990125; BR 9907261 A 19990125; CA 2319124 A 19990125; EP 99901497 A 19990125