WO1995000704A1 - Method of monitoring the deposition of resins from cellulose and/or paper-pulp suspensions - Google Patents

Method of monitoring the deposition of resins from cellulose and/or paper-pulp suspensions Download PDF

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Publication number
WO1995000704A1
WO1995000704A1 PCT/EP1994/001920 EP9401920W WO9500704A1 WO 1995000704 A1 WO1995000704 A1 WO 1995000704A1 EP 9401920 W EP9401920 W EP 9401920W WO 9500704 A1 WO9500704 A1 WO 9500704A1
Authority
WO
WIPO (PCT)
Prior art keywords
cellulose
resins
degradation
native starch
pulp suspensions
Prior art date
Application number
PCT/EP1994/001920
Other languages
German (de)
French (fr)
Inventor
Klaus Hornfeck
Heinz-Günther SCHULTE
Dieter Kaps
Original Assignee
Henkel Kommanditgesellschaft Auf Aktien
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE19934320453 priority Critical patent/DE4320453A1/en
Priority to DEP4320453.8 priority
Application filed by Henkel Kommanditgesellschaft Auf Aktien filed Critical Henkel Kommanditgesellschaft Auf Aktien
Publication of WO1995000704A1 publication Critical patent/WO1995000704A1/en

Links

Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/02Agents for preventing deposition on the paper mill equipment, e.g. pitch or slime control

Abstract

The invention calls for the deposition of resins from cellulose and/or paper-pulp suspensions to be monitored by adding to the suspension an effective amount of a decomposition product of native starch.

Description

 "Process for controlling the settling of resins from pulp and / or pulp suspensions"

Field of the Invention

The invention relates to a method for controlling the settling of resins from cellulose and / or wood pulp suspensions.

State of the art

Depending on the type of wood, the resins present in the pulp and wood pulp contain about 1-5% by weight of so-called harmful resins (cf. J. Weigl et al. Das Paper, 1986. p. V52 - V 62). These can be in a colloidal unbound form or adhere to the paper fibers. The adhesive properties of the resins can now have a negative effect on the one hand in the process of producing cellulose and wood pulp itself, and on the subsequent paper production.

In order to counter these difficulties, cation-active products have been used as a resin preventing agent. For example, it is known from the "Fachlexikon Papier - Pappe - Zellulose" (Verlag Ringier, Zofingen CH, 1967, p. 97) that such products keep material cycles, sieves, presses and felts clean and that resin problems occur in the manufacture of pulp and paper can be prevented. A fixing effect is attributed to the aid.

Within the scope of the present invention, those problems are addressed which arise in the handling of aqueous suspensions of primary fibrous material, which include the person skilled in the art pulp and wood pulp, due to the adhesive resins; The adhesive resins settle in fabric lines, on walls, screens and felts and lead to disturbances in the process flow of the production of the primary fibers.

Description of the invention

The object of the present invention was therefore to develop a process for controlling the settling of resins from cellulose and / or wood pulp suspensions. In addition, it was to be striven for that the auxiliaries to be used in the process are largely biologically compatible and therefore, from an ecological point of view, meet the requirements which are becoming increasingly important in the paper-processing industry today.

This object was achieved according to the invention by a process for controlling the settling of resins from pulp and / or pulp suspensions, the pulp and / or wood pulp suspension metered in an effective amount of a degradation product of native starch.

The present invention therefore relates to a process for controlling the settling of resins from pulp and / or pulp suspensions, which is characterized in that an effective amount of a degradation product of native starch is metered into the suspension.

Degradation products of native starch in the context of the present invention are understood to mean those products which are accessible by thermal, hydrolytic or enzymatic degradation of native starch and which have a lower average molecular weight than the underlying native starch and a higher average molecular weight than glucose, the Have a complete degradation product. However, it should be expressly stated that the products of a chemical derivatization such as the esterification, etherification, acetylation, etc. do not fall under the definition of the degradation products of native starch used here.

In the context of this invention, those degradation products of native starch are preferred which have an average molecular weight in the range from 1,200 to 600,000. The preferred way of producing these products is acidic and enzymatic hydrolysis or a combination of these methods.

The type of native starch which is used to produce the degradation products suitable according to the invention is not subject to any particular restriction. For example, potato starch, corn starch, rice starch or canna starch are used as starting materials. However, it is particularly preferred to use degradation products from potato starch.

It has also been found that the effect of the degradation products of native starch which are suitable according to the invention can be improved by additionally carrying out the process in the presence of a cellulose derivative. The cellulose derivative here is carboxymethyl cellulose, methyl hydroxypropyl cellulose, methyl cellulose,

Methylhydroxyethyl cellulose, hydroxyethyl cellulose and mixtures of these substances are particularly preferred.

Another object of the present invention is the use of degradation products of native starch to control the settling of resins from cellulose and / or pulp suspensions.

In principle, the degradation products of native starch according to the invention can be metered in at any point in the entire process of producing primary fibers. They are metered in either in the form of solid particles or in the form of an aqueous solution or dispersion. The effective amount of the degradation products of the native starches required in each case depends on the extent to which the aqueous suspensions of the primary fibers to be processed contain adhesive resins. As a rule, however, the degradation products of native starch according to the invention are used in an amount in the range from 0.001 to 5.0% by weight, preferably 0.1 to 1.0% by weight, based on the primary fiber material.

Claims

 P a t e n t a n s r u c h e
1. A process for controlling the settling of resins from cellulose and / or pulp suspensions, characterized in that an effective amount of a degradation product of native starch is metered into the suspension.
2. The method according to claim 1, wherein one uses a degradation product of potato starch.
3. The method of claim 1 or 2, wherein the average molecular weight of the degradation product of native starch is in the range of 1,200 to 600,000.
3. The method according to any one of claims 1 to 3, wherein the method is additionally carried out in the presence of a cellulose derivative.
4. The method according to claim 4, wherein a cellulose derivative is used which is selected from the group carboxymethyl cellulose, methyl hydroxypropyl cellulose, methyl cellulose, methyl hydroxyethyl cellulose and hydroxyethyl cellulose.
6. Use of degradation products of native starch to control the settling of resins from cellulose and / or wood pulp suspensions.
7. Use according to claim 6, wherein the degradation product of native starch was produced from potato starch.
PCT/EP1994/001920 1993-06-21 1994-06-13 Method of monitoring the deposition of resins from cellulose and/or paper-pulp suspensions WO1995000704A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19934320453 DE4320453A1 (en) 1993-06-21 1993-06-21 Process for controlling the settling of resins from pulp and / or pulp suspensions
DEP4320453.8 1993-06-21

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1019950705771A KR960703187A (en) 1993-06-21 1994-06-13 Method of monitoring the deposition of resins from cellulose and / or paper-pulp suspensions
EP19940918868 EP0705366A1 (en) 1993-06-21 1994-06-13 Method of monitoring the deposition of resins from cellulose and/or paper-pulp suspensions
JP50240095A JPH08511831A (en) 1993-06-21 1994-06-13 Method for controlling sedimentation of resin from cellulose and / or paper pulp suspension
FI956115A FI956115A (en) 1993-06-21 1995-12-19 Method for controlling the settling of resins from cellulose and / or wood pulp suspensions

Publications (1)

Publication Number Publication Date
WO1995000704A1 true WO1995000704A1 (en) 1995-01-05

Family

ID=6490776

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1994/001920 WO1995000704A1 (en) 1993-06-21 1994-06-13 Method of monitoring the deposition of resins from cellulose and/or paper-pulp suspensions

Country Status (6)

Country Link
EP (1) EP0705366A1 (en)
JP (1) JPH08511831A (en)
KR (1) KR960703187A (en)
DE (1) DE4320453A1 (en)
FI (1) FI956115A (en)
WO (1) WO1995000704A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19704054A1 (en) * 1997-02-04 1998-08-06 Stockhausen Chem Fab Gmbh Process for the production of fibrous materials with improved properties
US6006189A (en) * 1997-10-10 1999-12-21 Nortel Networks Corporation Method and apparatus for storing and forwarding voice signals
US6026356A (en) * 1997-07-03 2000-02-15 Nortel Networks Corporation Methods and devices for noise conditioning signals representative of audio information in compressed and digitized form

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2147149B1 (en) * 2007-05-16 2017-03-22 Buckman Laboratories International, Inc. Methods to control organic contaminants in fibers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3102065A (en) * 1961-03-22 1963-08-27 Virginia Chemicals & Smelting Method and composition for dispersing of pitch
US4923566A (en) * 1988-07-19 1990-05-08 Nalco Chemical Company Method of pacifying stickies in paper

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3102065A (en) * 1961-03-22 1963-08-27 Virginia Chemicals & Smelting Method and composition for dispersing of pitch
US4923566A (en) * 1988-07-19 1990-05-08 Nalco Chemical Company Method of pacifying stickies in paper

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EICHHORN, R. ET AL: "Neueste Erkenntnisse bei der Produktion von Zeitungsdruckpapier auf Basis Recyclingfaser und TMP.", WOCHENBL. PAPIERFABR., vol. 119, no. 3, 15 February 1991 (1991-02-15), pages 82 - 84 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19704054A1 (en) * 1997-02-04 1998-08-06 Stockhausen Chem Fab Gmbh Process for the production of fibrous materials with improved properties
DE19704054C2 (en) * 1997-02-04 2000-08-10 Stockhausen Chem Fab Gmbh Process for the production of fibrous materials with improved properties
US6344108B1 (en) 1997-02-04 2002-02-05 Stockhausen Gmbh & Co. Kg Using a dicarboxylic acid dialkyl ester brightening
US6026356A (en) * 1997-07-03 2000-02-15 Nortel Networks Corporation Methods and devices for noise conditioning signals representative of audio information in compressed and digitized form
US6006189A (en) * 1997-10-10 1999-12-21 Nortel Networks Corporation Method and apparatus for storing and forwarding voice signals

Also Published As

Publication number Publication date
EP0705366A1 (en) 1996-04-10
KR960703187A (en) 1996-06-19
FI956115D0 (en)
FI956115A (en) 1995-12-19
FI956115A0 (en) 1995-12-19
DE4320453A1 (en) 1994-12-22
JPH08511831A (en) 1996-12-10

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