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WO1997014490A1 - Composition demoussante/antimoussante - Google Patents

Composition demoussante/antimoussante Download PDF

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Publication number
WO1997014490A1
WO1997014490A1 PCT/US1996/016127 US9616127W WO9714490A1 WO 1997014490 A1 WO1997014490 A1 WO 1997014490A1 US 9616127 W US9616127 W US 9616127W WO 9714490 A1 WO9714490 A1 WO 9714490A1
Authority
WO
WIPO (PCT)
Prior art keywords
diester
fatty acid
composition
defoamer
ethylene oxide
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US1996/016127
Other languages
English (en)
Inventor
John J. Palmer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henkel Corp
Original Assignee
Henkel Corp
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
Application filed by Henkel Corp filed Critical Henkel Corp
Priority to JP9515866A priority Critical patent/JPH11514293A/ja
Priority to EP96937668A priority patent/EP0861115A4/fr
Publication of WO1997014490A1 publication Critical patent/WO1997014490A1/fr
Priority to NO981706A priority patent/NO981706D0/no
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/02—Foam dispersion or prevention
    • B01D19/04—Foam dispersion or prevention by addition of chemical substances
    • B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/28—Prevention of foam
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP 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
    • D21H21/00—Non-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
    • D21H21/06—Paper forming aids
    • D21H21/12—Defoamers

Definitions

  • This invention relates to a defoamer/antifoam composition
  • a defoamer/antifoam composition comprising a diester of an ethylene oxide/propylene oxide block copolymer and a fatty acid containing from 2 to 30 carbon atoms which may be used individually or as a mixture with a diester of a polyethylene glycol and a fatty acid containing from 2 to 30 carbon atoms .
  • Foam is consistently a problem in the processing of pulp during the manufacture of paper products. Virtually all segments of the papermaking process generate entrained air and surface foam which are extremely undesirable due to their deleterious effect upon process efficiency and the finished product. Discussion of Related Art
  • a variety of antifoam/defoa er agents have been used with varying degrees of success .
  • Many defoamers are stearic acid or fatty acid based emulsion products.
  • Some examples of emulsion products are set forth in the following patents: U.S. Pat, Nos. 3,705,860 (Duvall) , issued Dec. 12, 1972, 3,337,595, and U.S. Pat. No. 4,451,390 (Flannigan) , issued May 29, 1984.
  • Antifoam products are usually sold in diluted form causing them to be bulky and costly to transport.
  • These defoaming agents may also contain undesirable particulate additives which may deposit throughout the papermaking process resulting in undesirable deposits throughout the system.
  • Particulate additives which may cause deposits and plugging of papermaking systems are typically stearic acids, fatty acids, silicones, hydrophobic silica, waxes or other organic particles .
  • defoamer agents contain particulate additives, such as silicone, hydrocarbons or other organic particles.
  • particulate additives such as silicone, hydrocarbons or other organic particles.
  • glycols or glycerols as foam-inhibiting agents is also known.
  • the present invention provides a concentrated, 100% active, product which has many cost saving advantages over conventional defoa ers . Containing only pure active ingredient, the composition of the present invention has no base or carrier resulting in reduced transportation and container costs. Furthermore, the fact that it is not an oil-based defoamer assists in preventing the loss of paper sheet properties, such as brightness, sizing efficiency and strength. Having no oil, amide, e.g. ethylene bis- stearamide, hydrophobic silica or silicone additives prevents deposition and felt filling. It has also been discovered that the defoamer composition of the present invention is a much more effective agent for control of entrained air than conventional defoaming agents . Additional advantages of the present invention shall become apparent as described below.
  • the present invention provides a defoamer/antifoam composition
  • a defoamer/antifoam composition comprising a diester of an ethylene oxide/propylene oxide block copolymer and a fatty acid containing from 2 to 30 carbon atoms.
  • the defoamer/antifoam composition may comprise a mixture of said diester with a diester of a polyethylene glycol and a fatty acid containing from 2 to 30 carbon atoms.
  • the mixture of ethylene oxide/propylene oxide block copolymer-diester of fatty acid and polyethylene glycol- diester of fatty acid may comprise a weight ratio of from about 10:90 to 90:10, preferably from about 25:75 to
  • the ethylene oxide/propylene oxide block copolymer employed in preparing the diester may contain from about 1 to about 100 moles of ethylene oxide, preferably from about 10 to about 60 moles of ethylene oxide, and from about 1 to about 100 moles of propylene oxide, preferably from about 10 to about 50 moles of propylene oxide.
  • the fatty acid may contain from 2 to 30 carbon atoms, preferably from 16 to 24 carbon atoms.
  • the mole ratio of fatty acid to ethylene oxide/propylene oxide block copolymer used in preparing the diester may be from about 1:5 to about 5:1, preferably from about 1:1 to about 1:3.
  • the fatty acid may contain from 2 to 30 carbon atoms, preferably from 16 to 24 carbon atoms, and the mole ratio of fatty acid to polyethylene glycol may be from about 3:1 to about 1:3, preferably from about 2.5:1 to about 1.5:1.
  • An additional object of the present invention is a method for controlling foam in a papermaking process which includes the step of adding to a pulp slurry, papermaking furnish, and/or pulp suspension the antifoam/defoamer composition of this invention.
  • the antifoam/defoamer composition is added at a concentration in the range between about 0.01-10.0 lbs. /ton of paper produced, preferably in a range between about 0.10-3.0 lbs/ton of paper produced.
  • the present invention may also include many additional features which shall be further described below.
  • Fig. 1 is a graph which plots foam height (in cm) versus time (in minutes) for two defoamer compositions.
  • defoamer A represents a polyhydric alcohol fatty acid ester/polyether surfactant blend prepared in a weight ratio of 1 to 2.
  • Defoamer X represents a 25%/wt blend of an ethoxylated/propoxylated tall oil fatty acid diester and 75%/wt of ethoxylated tall oil fatty acid diester.
  • defoamer A and defoamer X were evaluated at a concentration of 0.1%/wt at 100°F in the white water of mill y.
  • Fig. 2 is a graph which plots foam height (in cm) versus time (in minutes) for two defoamer compositions in accordance with this invention.
  • defoamer Y represents a 100% ethoxylated/propoxylated tall oil fatty acid diester.
  • Defoamer X represents a 25%/wt blend of ethoxylated/ propoxylated tall oil fatty acid diester and 75%/wt of ethoxylated tall oil fatty acid diester.
  • defoamer Y and defoamer X were evaluated at a concentration of 0.1%/wt at 100°F in the white water of mill z.
  • defoamer F represents a polyhydric alcohol fatty acid ester/polyether surfactant blend prepared in a weight ratio of 2 to 1.
  • Defoamer X represents a 25%/wt blend of ethoxylated/propoxylated tall oil fatty acid diester and 75%/wt ethoxylated tall oil fatty acid diester.
  • defoamer F and defoamer X were evaluated at a concentration of 0.1%/wt at 1G0 C F in the white water of mill c.
  • Fig. 4 is a graph which plots foam height (in cm) versus time (in seconds) for five defoamer compositions at a temperature of 45°C in paper machine water containing 0.1%/wt of paper size. DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • the present invention provides an antifoam/defoamer concentrate having superior activity and cost/performance than conventional oil or water based defoamers.
  • the composition is highly effective in reducing or eliminating entrained air and surface foam in many pulp and paper process streams.
  • the defoamer composition of the present invention does not contain oil, amides, hydrophobic silica or silicone additives, thereby avoiding deposition and felt filling problems. Examples of some paper manufacturing applications in which this defoamer composition provides particularly good foam control and drainage enhancement are as follows: general wet-end foam control, groundwood/TMP systems. secondary fiber systems, bleach plants/screen rooms, and effluent streams.
  • the defoamer/antifoam composition of the instant invention comprises a diester of an ethylene oxide/propylene oxide block copolymer and a fatty acid containing from 2 to 30 carbon atoms, preferably from 16 to 24 carbon atoms. Optimum results have been obtained with a diester of ethylene oxide/propylene oxide block copolymer and tall oil fatty acid having a weight average molecular weight of about 2,000.
  • the defoamer/antifoam composition of the instant invention comprises a mixture of a diester of an ethylene oxide/propylene oxide block copolymer and a fatty acid containing from 2 to 30 carbon atoms and a diester of a polyethylene glycol and a fatty acid containing from 2 to 30 carbon atoms.
  • Optimum results have been obtained with a diester of a polyethylene glycol and a tall oil fatty acid having a weight average molecular weight of from about 200 to about 800, preferably about 400.
  • the ethylene oxide/propylene oxide block copolymer - diester of fatty acid and the polyethylene glycol -diester of fatty acid may be mixed together in a weight ratio of from about 10:90 to 90:10, preferably from about 25:75 to 75:25, and more preferably from about 25:75 to 50:50.
  • the mixture of ethylene oxide/propylene oxide block copolymer -diester of fatty acid and the polyethylene glycol -diester of fatty acid can be prepared in a "one- pot" reaction process.
  • Example 1 A laboratory evaluation of four defoamer/antifoam compositions was conducted using an antifoam recirculation tester. The compositions tested were as follows.
  • defoamer Y a 0.1%/wt solution of 100%/wt ethoxylated/propoxylated tall oil fatty acid diester identified as defoamer Y.
  • the antifoam and defoaming properties of the aforementioned compositions are illustrated in Fig. 1, Fig. 2 and Fig. 3.
  • the data in the figures clearly show that the composition of defoamer X, i.e., a 25%/wt mixture of ethoxylated/propoxylated tall oil fatty acid diester and 75%/wt of ethoxylated tall oil fatty acid diester works more effectively as an antifoam/defoamer agent.
  • defoamer Y is the most effective antifoam/defoamer agent.
  • Example 2 A laboratory evaluation of five (5) defoaming agents O 97/14490 PC17US96/16127
  • compositions tested were:
  • Defoamer B an oil-based defoamer containing a polyether surfactant and mineral oil.
  • Fig. 4 The results of the aforementioned defoaming evaluations are set forth in Fig. 4 wherein foam height (in cm) was measured versus time (in seconds) at a temperature of 45°C after adding 25 ml of the defoaming composition to 600 ml of paper machine water containing 0.1%/wt of Stayfor* resin ( estvaco) size. It can be seen therefrom that defoamer Y was the most effective in controlling the amount of foam generated over time.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Paper (AREA)

Abstract

L'invention porte sur une composition démoussante/antimoussante contenant un diester de copolymère bloc oxyde d'éthylène/oxyde de propylène, et un acide gras à 2 à 30 atomes de carbone. Dans une variante, la composition contient également un diester de polyéthylène glycol et un acide gras à 2 à 30 atomes de carbone.
PCT/US1996/016127 1995-10-17 1996-10-15 Composition demoussante/antimoussante Ceased WO1997014490A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP9515866A JPH11514293A (ja) 1995-10-17 1996-10-15 消泡剤／泡止め組成物
EP96937668A EP0861115A4 (fr) 1995-10-17 1996-10-15 Composition demoussante/antimoussante
NO981706A NO981706D0 (no) 1995-10-17 1998-04-16 Avskumming/antiskumsammensetning

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54433395A 1995-10-17 1995-10-17
US08/544,333 1995-10-17

Publications (1)

Publication Number Publication Date
WO1997014490A1 true WO1997014490A1 (fr) 1997-04-24

Family

ID=24171753

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/016127 Ceased WO1997014490A1 (fr) 1995-10-17 1996-10-15 Composition demoussante/antimoussante

Country Status (4)

Country Link
EP (1) EP0861115A4 (fr)
JP (1) JPH11514293A (fr)
NO (1) NO981706D0 (fr)
WO (1) WO1997014490A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000051708A1 (fr) * 1999-03-01 2000-09-08 Vulcan Performance Chemicals Agent anti-moussant a base d'eau
WO2007021205A1 (fr) * 2005-08-19 2007-02-22 Splintiz Investments Limited Formulation de boissons à base de lait pour la carbonatation
EP2521766A4 (fr) * 2009-12-30 2016-11-23 Forchem Oy Composition de brai de tallöl, procédé de production de celle-ci et utilisations de celle-ci

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4695545B2 (ja) * 2006-05-29 2011-06-08 三菱製紙株式会社 黒液の発泡抑制方法
JP5312249B2 (ja) * 2009-07-29 2013-10-09 王子ホールディングス株式会社 耐油紙

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3844711A (en) * 1971-01-22 1974-10-29 Basf Ag Low-froth, water-soluble dyeing auxiliaries
US5298120A (en) * 1992-06-09 1994-03-29 Michael Blackstone Composition for enhancing the pulping of wood chips
US5501769A (en) * 1992-06-09 1996-03-26 Chemstone, Inc. Pulping wood using fatty acid esters of polyoxyalkalene glycols to enhance pulping uniformity and pulp yield
US5562862A (en) * 1994-04-06 1996-10-08 Betz Laboratories, Inc. Polybutene-based foam control composition for aqueous systems

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5204012A (en) * 1989-01-31 1993-04-20 Ethyl Corporation Supplemental rust inhibitors and rust inhibition in internal combustion engines
GB9011665D0 (en) * 1990-03-21 1990-07-11 Stephenson Group Recycling of fibre products
WO1994020680A1 (fr) * 1993-03-12 1994-09-15 Exxon Chemical Patents Inc. Dispersions aqueuses antimousse de bistearamides d'ethylene

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3844711A (en) * 1971-01-22 1974-10-29 Basf Ag Low-froth, water-soluble dyeing auxiliaries
US5298120A (en) * 1992-06-09 1994-03-29 Michael Blackstone Composition for enhancing the pulping of wood chips
US5501769A (en) * 1992-06-09 1996-03-26 Chemstone, Inc. Pulping wood using fatty acid esters of polyoxyalkalene glycols to enhance pulping uniformity and pulp yield
US5562862A (en) * 1994-04-06 1996-10-08 Betz Laboratories, Inc. Polybutene-based foam control composition for aqueous systems

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0861115A4 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000051708A1 (fr) * 1999-03-01 2000-09-08 Vulcan Performance Chemicals Agent anti-moussant a base d'eau
WO2007021205A1 (fr) * 2005-08-19 2007-02-22 Splintiz Investments Limited Formulation de boissons à base de lait pour la carbonatation
AU2006280501B2 (en) * 2005-08-19 2012-06-14 Splintiz Investments Limited Formulation of milk-based beverages for carbonation
US8337924B2 (en) 2005-08-19 2012-12-25 Splintiz Investments, Ltd Formulation of milk-based beverages for carbonation
EP2521766A4 (fr) * 2009-12-30 2016-11-23 Forchem Oy Composition de brai de tallöl, procédé de production de celle-ci et utilisations de celle-ci

Also Published As

Publication number Publication date
EP0861115A1 (fr) 1998-09-02
NO981706L (no) 1998-04-16
NO981706D0 (no) 1998-04-16
JPH11514293A (ja) 1999-12-07
EP0861115A4 (fr) 1998-12-02

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