公开(公告)号：CA2589653C

公开(公告)日：2014-10-07

申请号：CA2589653

申请日：2005-12-17

Applicant: BASF AG

Inventor： KOCH OLIVER ,  PRECHTL FRANK ,  BLUM RAINER ,  KANNENGIESSER DETLEF

IPC: D21H21/10

Abstract: A process for producing paper, board or cardboard by adding a microparticle system comprising a cationic polymeric retention aid having a molar mass Mw of at least 2 million and a finely divided inorganic component to a paper stock having a density of not more than 20 g/L and draining the paper stock, the paper stock being subjected, before or after the addition of the cationic polymeric retention aid, to at least one shear stage, which comprises metering the cationic polymeric retention aid into the paper stock in at least two places, and metering the finely divided inorganic component before or after the addition of the cationic polymeric retention aid. This process allows to obtain better retention and better papers with improved formation.

公开(公告)号：CA2563934C

公开(公告)日：2013-01-08

申请号：CA2563934

申请日：2005-05-19

Applicant: BASF AG

Inventor： LINHART FRIEDRICH ,  ESSER ANTON ,  KANNENGIESSER DETLEF

IPC: D21H21/14

Abstract: The invention relates to a method for producing crêped paper by gluing a paper web to a crêping cylinder with the aid of an adhesive. Said adhesive consists of: (i) a polyethylene imine with a molar mass Mw of between 50,000 and 2 million, (ii) products of a reaction between polyethylene imine with a molar mass Mw of between 500 and 1 million and at least one C14 to C22 alkyldiketene, a monocarboxylic acid, a monocarboxylic acid ester or a monocarboxylic acid chloride and/or (iii) products of a reaction between polyalkylene polyamines with a molar mass of between 300 and 1 million and at least one dichlorohydrin ether or diglycidyl ether of a polyalkylene glycol with a molar weight M N of between 300 and 3000. The paper is then compressed and the crêped paper is removed. The invention also relates to the use of the adhesives (i) to (iii) as auxiliary agents in the crêping process.

公开(公告)号：CA2589653A1

公开(公告)日：2006-07-06

申请号：CA2589653

申请日：2005-12-17

Applicant: BASF AG

Inventor： BLUM RAINER ,  KANNENGIESSER DETLEF ,  PRECHTL FRANK ,  KOCH OLIVER

IPC: D21H21/10

公开(公告)号：CA2563934A1

公开(公告)日：2005-12-08

申请号：CA2563934

申请日：2005-05-19

Applicant: BASF AG

Inventor： KANNENGIESSER DETLEF ,  LINHART FRIEDRICH ,  ESSER ANTON

IPC: D21H21/14

Abstract: The process for the production of crepe paper by adhesive bonding of a paper web with the aid of an adhesive comprising (i) polyethyleneimine having a molar mass Mw of from 50 000 to 2 million, (ii) reaction products of polyethyleneimine having a molar mass Mw of from 500 to 1 million with at least one C14- to C22-alkyldiketene, a monocarboxylic acid, an ester of a monocarboxylic acid or an acid chloride of a monocarboxylic acid and/or (iii) reaction products of polyalkylenepolyamines having a molar mass of from 300 to 1 million with at least one bischlorohydrogen ether or bisglycidyl ether of a polyalkylene glycol having a molecular weight MN of from 300 to 3000 to a creping cylinder, compression and removal of the crepe paper, as well as the use of the adhesives (i) to (iii) as creping assistants.