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公开(公告)号：DE502005003567D1
公开(公告)日：2008-05-15
申请号：DE502005003567
申请日：2005-03-14
Applicant: BASF SE
Inventor： ESSER ANTON , BLUM RAINER , KUHN JOACHIM , LEDUC MARC , HEMEL RALF
Abstract: A process for the production of paper, board and cardboard by draining a paper stock containing interfering substances in the presence of polymers which contain vinylamine units and which have an average molar mass Mw of at least 1 million, a high-consistency stock first being prepared, at least one polymer containing vinylamine units and having an average molar mass Mw of at least 1 million and a degree of hydrolysis of from 1 to 20 mol % being metered into the high-consistency stock, the high-consistency stock being diluted to a low-consistency stock by adding water, and the low-consistency stock being drained, the polymers being hydrolyzed homo- or copolymers of N-vinylcarboxamides additives for reducing deposits in the wire part, press section and drying section of paper machines.
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公开(公告)号：AT391207T
公开(公告)日：2008-04-15
申请号：AT05716030
申请日：2005-03-14
Applicant: BASF SE
Inventor： ESSER ANTON , BLUM RAINER , KUHN JOACHIM , LEDUC MARC , HEMEL RALF
Abstract: A process for the production of paper, board and cardboard by draining a paper stock containing interfering substances in the presence of polymers which contain vinylamine units and which have an average molar mass Mw of at least 1 million, a high-consistency stock first being prepared, at least one polymer containing vinylamine units and having an average molar mass Mw of at least 1 million and a degree of hydrolysis of from 1 to 20 mol % being metered into the high-consistency stock, the high-consistency stock being diluted to a low-consistency stock by adding water, and the low-consistency stock being drained, the polymers being hydrolyzed homo- or copolymers of N-vinylcarboxamides additives for reducing deposits in the wire part, press section and drying section of paper machines.
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