A PROCESS OF MAKING PAPER
Application 3033/MAS/1997 published 2006-10-13, filed 1997-12-31
Paper is made by a dual soluble polymer process in which a cellulosic suspension which usually contains alum or cationic coagulant is first flocculated with a high IV cationic synthetic polymer or cationic starch and, after shearing, the suspension is reflocculated by the addition of a branched anionic water soluble polymer having IV above 3dl/g and tan delta at 0.005Hz of at least 0.5. The process gives an improved combination of formation, retention and drainage.
Applicant
CIBA SPECIALTY CHEMICALS WATER TREATMENTS LIMITED,
P O BOX 38, LOW MOOR, BRADFORD, WEST YORKSHIRE BD12 OJZ, ENGLAND, BRITISH
Inventor
International Info
Classification: C 08 F 2/32, D 21 H 23/14, 21/10, D 01 H 17/42, 17/44
Publication Number:
Priority Information
60/034247 US 1996-12-31