WO2000050147A1 - Agent antimousse depourvu d'huile hydrocarbure - Google Patents

Agent antimousse depourvu d'huile hydrocarbure Download PDF

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Publication number
WO2000050147A1
WO2000050147A1 PCT/US2000/003975 US0003975W WO0050147A1 WO 2000050147 A1 WO2000050147 A1 WO 2000050147A1 US 0003975 W US0003975 W US 0003975W WO 0050147 A1 WO0050147 A1 WO 0050147A1
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WO
WIPO (PCT)
Prior art keywords
composition
recited
ester
fatty
water
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/US2000/003975
Other languages
English (en)
Inventor
Inc. Betzdearborn
Charles J. Berzansky
William A. Hendriks
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.)
Veolia WTS USA Inc
Original Assignee
BetzDearborn Inc
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 BetzDearborn Inc filed Critical BetzDearborn Inc
Priority to AU34926/00A priority Critical patent/AU3492600A/en
Publication of WO2000050147A1 publication Critical patent/WO2000050147A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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

  • the present invention relates to foam control compositions, their preparation and use in aqueous systems.
  • the foam control compositions are particularly useful in the processing of pulp and paper and the treatment of effluent water.
  • Foam can present serious problems in the manufacture of pulp and paper. Lack of adequate foam control in the paper slurry can limit or halt production, as well as affect finished product quality.
  • Defoamers when added to a foaming liquid, can prevent bubble formation or cause coalescence of smaller bubbles into larger ones, leading to rupture.
  • Most conventional defoamers include a hydrophobic material having a melting point greater than 40° C, such as a diamide and/or a hydrophobically modified insoluble particle, e.g., silica, dispersed in a hydrocarbon oil phase.
  • Many of these compositions also contain silicone oil.
  • a problem with these types of compositions is that they quickly become unstable, and a settling of individual components, such as silica, occurs. Hydrophobic materials with melting points above 40° C will precipitate rapidly after the processing temperatures fall below their melting point when dispersed in a hydrocarbon oil phase.
  • Pure organic-based defoamers are not highly effective and require large amounts of material to defoam systems, while silica-based defoamers are expensive because large amounts of the silica particles are required to perform effectively.
  • the present invention relates to a water-based defoaming agent containing (1) an ester of a dicarboxylic acid and a monohydric alcohol, (2) at least one predominantly hydrophobic material having a melting point greater than 40° C selected from the group consisting of hydrocarbon waxes, fatty amides, fatty acids and fatty alcohols, (3) a surfactant selected from the group consisting of polyethylene glycol esters, sorbitan/sorbitol esters, ethoxylated fatty alcohols, fatty acids and fatty ethers, and (4) water.
  • the defoaming agent further includes a polyether modified silicone copolymer, an aqueous polyacrylate and an alkali material.
  • the present invention provides a defoaming agent with improved efficacy in aqueous systems that is particularly effective at controlling foam in the paper making process.
  • the present invention provides a water-based defoamer composition with improved stability and no particle precipitation over a temperature range of about 10° C to 50° C.
  • the invention provides an "environmentally friendly" defoamer composition comprising low or no volatile organic carbon (VOC) content and no dioxin precursor containing hydrocarbon oils.
  • VOC volatile organic carbon
  • the dicarboxylic acid ester is formed from the reaction of a dicarboxylic acid with a monohydric alcohol.
  • the dicarboxylic acid is selected from the group consisting of adipic acid, suberic acid, azelaic acid, sebacic acid, phthalic acid and isomers thereof. These acids are then reacted with alcohols selected from the group consisting of hexyl, octyl, nonyl, decyl, dodecyl, tetradecyl, hexadecyl, octadecyl alcohol, and isomers thereof.
  • the hydrophobic material with a melting point greater than 40° C includes fatty acid amides with the general formula:
  • n is an integer from 2 to 6
  • R is a saturated or unsaturated, straight or branched aliphatic group having from 5 to 22 carbons.
  • the fatty amides are formed from the reaction of polyamine containing at least one alkylene group having from 2 to 6 carbon atoms and a fatty acid having from 5 to 22 carbon atoms not including the carboxyl group carbon.
  • suitable hydrophobic amides formed from this reaction include but are not limited to methylene bis acrylamide, methylene bis lauramide, ethylene bis stearamide, ethylene bis behenamide, and ethylene bis oleoamide.
  • the aliphatic fatty alcohols and fatty acids are saturated, linear or branched and contain at least 12 carbon atoms, while the hydrocarbon wax has a melting point of from about 40° C to 120° C.
  • the emulsifying surfactants are preferably nonionic surfactants and include polyethylene glycol esters such as PEG 400 dioleate and PEG 600 dioleate, sorbitan/sorbital esters such as sorbitan monooleate, POE (20) sorbitan monooleate and POE (40) sorbitol hexaoleate, ethoxylated fatty acids, ethoxylated fatty alcohols, and ethoxylated fatty ethers such as POE (40) stearate, POE (20) stearyl alcohol and POE (10) oleyl ether.
  • polyethylene glycol esters such as PEG 400 dioleate and PEG 600 dioleate
  • sorbitan/sorbital esters such as sorbitan monooleate
  • POE (20) sorbitan monooleate and POE (40) sorbitol hexaoleate ethoxylated fatty acids, ethoxyl
  • the polyether-modified silicone copolymer is a silicone copolymer modified with ethylene oxide and propylene oxide which results in a copolymer with a cloud point of from about 40° C to less than about 25° C, and a molecular weight range of from about 10,000 to 40,000.
  • the polyacrylates that are encompassed by the present invention are aqueous, acidic, acrylic emulsion copolymers that thicken by an uncoiling action of the polymer chain upon neutralization with an alkali material.
  • the preferred polyacrylate is a copolymer of ethylacrylate and methacrylic acid.
  • the alkali material can be sodium hydroxide, potassium hydroxide, ammonium hydroxide, or triethanolamine.
  • the present invention relates to the use of a dicarboxylic acid ester, without organic solvent or hydrocarbon oil, as a carrier for the high melting point hydrophobic material and a surfactant selected from the group consisting of polyethylene glycol esters, sorbitol/sorbitan esters, ethoxylated fatty acids, ethoxylated fatty alcohols and ethoxylated fatty ethers, emulsified in water to form a stable dispersion of particles that does not precipitate upon cooling below the melting point of the hydrophobic material.
  • the dispersions are stable at temperatures of from about 10° C to 50° C for about 6 weeks.
  • Preferred amounts of the components of the defoamer composition of the present invention are as follows:
  • Hydrophobic material 0.5 - 20 1 - 10
  • the defoamers are prepared by charging all the material excluding the water to a vessel, heating to about 120° C, and holding at this temperature for about 30 minutes. The mixture is added to a vessel that has been charged with the water phase maintained under constant agitation. The dispersion is then cooled to below 45° C, at which time the polyacrylate is added and then neutralized with the alkali material.
  • various defoamers were tested in a recirculation test cell.
  • the foaming medium is circulated from the bottom of a calibrated graduated column via a pump and returned down through the top of the column. This action agitates the medium and causes foam which flows up the calibrated tube and allows determination of foam height at different time intervals.
  • the calibrated column is wrapped with heat tape and kept at a constant temperature (+/-2° F) via a probe and temperature controller.
  • the foam test cell holds approximately 1200 ml of medium.
  • the column is filled with medium and recirculated briefly to evacuate all the air from the loop.
  • the defoamers noted below were tested using the synthetic medium at a temperature of 130° F and a pH of 7.5.
  • the conductivity of the medium was 2400 umhos.
  • Control time was 6.5 seconds to top.
  • An emulsion antifoam of the present invention containing diisononyl adipate, wax, surfactants, silicon copolymer, ethylene bis stearamide, polyacrylate, water and sodium hydroxide.
  • An emulsion antifoam of the present invention containing dioctyl sebacate, ethylene bis stearamide, wax, surfactants, silicone copolymer, polyacrylate, water, and sodium hydroxide.
  • An emulsion antifoam of the present invention containing diisoctyl phthalate, ethylene bis stearamide, surfactants, and water.
  • An emulsion antifoam of the present invention containing diisononyl adipate, ethylene bis stearamide, surfactants, and water.
  • an amide particulate antifoam emulsion containing hydrocarbon oil (No. 1 ) is not as effective as the other examples which are variations of the present invention and contain various dicarboxylic acid esters. All formulations were run at a dosage of 10 ul.
  • the defoamers listed below were tested using the synthetic medium at a temperature of 125° F and a pH of 7.0.
  • the conductivity of the medium was 4600 umhos.
  • Control time was 8 seconds to top.
  • An emulsion antifoam of the present invention containing diisononyl adipate, ethylene bis stearamide, surfactants, and water.
  • An emulsion antifoam of the present invention containing diisoctyl phthalate, ethylene bis stearamide, surfactants, and water.
  • tests 7, 8 and 10 provide superior performance when compared to the hydrocarbon oil/amide emulsion and the polybutene/amide based product. All products were tested at a dosage of 12 ul.

Landscapes

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

Abstract

L'invention concerne des composition antimousse ainsi que l'utilisation de celles-ci dans des systèmes aqueux. Ces compositions sont notamment utiles dans le traitement de la pâte à papier et du papier et dans le traitement des eaux résiduaires.
PCT/US2000/003975 1999-02-24 2000-02-17 Agent antimousse depourvu d'huile hydrocarbure Ceased WO2000050147A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU34926/00A AU3492600A (en) 1999-02-24 2000-02-17 Hydrocarbon oil free defoamer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25605999A 1999-02-24 1999-02-24
US09/256,05919990224 1999-02-24

Publications (1)

Publication Number Publication Date
WO2000050147A1 true WO2000050147A1 (fr) 2000-08-31

Family

ID=22970953

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/003975 Ceased WO2000050147A1 (fr) 1999-02-24 2000-02-17 Agent antimousse depourvu d'huile hydrocarbure

Country Status (2)

Country Link
AU (1) AU3492600A (fr)
WO (1) WO2000050147A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110248213A1 (en) * 2010-04-12 2011-10-13 Cognis Ip Management Gmbh Defoaming Agents and Articles and Methods Using Same
CN103866609A (zh) * 2014-02-25 2014-06-18 苏州恒康新材料有限公司 一种造纸消泡剂及其制备方法
CN111437632A (zh) * 2020-04-17 2020-07-24 五色石新材料(杭州)有限公司 一种利用聚醚改性硅油制备乳液型消泡剂的方法
JP2025026278A (ja) * 2023-08-08 2025-02-21 ヒンドゥスタン ペトロリアム コーポレーション リミテッド 消泡剤／破泡剤

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4341656A (en) * 1978-11-03 1982-07-27 Ciba-Geigy Corporation Foam inhibitors and their use for defoaming aqueous systems
DE3242202A1 (de) * 1981-11-25 1983-06-01 Sandoz-Patent-GmbH, 7850 Lörrach Schaumhemmende mittel, deren herstellung und verwendung
US4559162A (en) * 1981-03-10 1985-12-17 Ciba-Geigy Corporation Compositions of polymers based on acrylic acid, solvents, surfactants and, if appropriate, silicone oils, their preparation and their use as anti-foams and deaerating agents
US4880564A (en) * 1986-09-29 1989-11-14 Ciba-Geigy Corporation Antifoams for aqueous systems and their use
US4988463A (en) * 1988-03-26 1991-01-29 Bayer Aktiengesellschaft Foam suppressants
RU1775125C (ru) * 1990-04-17 1992-11-15 Московский Институт Нефти И Газа Им.И.М.Губкина Пеногаситель
US5431853A (en) * 1992-04-27 1995-07-11 Nikko Chemical Institute Inc. Modified silicone oil-in-water emulsion defoaming agent and defoaming method using it
EP0687725A1 (fr) * 1994-06-17 1995-12-20 Dow Corning S.A. Agent pour la régulation de la mousse
WO1996011733A1 (fr) * 1994-10-13 1996-04-25 Henkel Corporation Composition antimousse et son procede d'utilisation
US5562862A (en) * 1994-04-06 1996-10-08 Betz Laboratories, Inc. Polybutene-based foam control composition for aqueous systems
DE19621595C1 (de) * 1996-05-30 1997-09-11 Henkel Kgaa Verwendung von Dicarbonsäureestern als Entschäumer für Kühlschmierstoffe

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4341656A (en) * 1978-11-03 1982-07-27 Ciba-Geigy Corporation Foam inhibitors and their use for defoaming aqueous systems
US4559162A (en) * 1981-03-10 1985-12-17 Ciba-Geigy Corporation Compositions of polymers based on acrylic acid, solvents, surfactants and, if appropriate, silicone oils, their preparation and their use as anti-foams and deaerating agents
DE3242202A1 (de) * 1981-11-25 1983-06-01 Sandoz-Patent-GmbH, 7850 Lörrach Schaumhemmende mittel, deren herstellung und verwendung
US4880564A (en) * 1986-09-29 1989-11-14 Ciba-Geigy Corporation Antifoams for aqueous systems and their use
US4988463A (en) * 1988-03-26 1991-01-29 Bayer Aktiengesellschaft Foam suppressants
RU1775125C (ru) * 1990-04-17 1992-11-15 Московский Институт Нефти И Газа Им.И.М.Губкина Пеногаситель
US5431853A (en) * 1992-04-27 1995-07-11 Nikko Chemical Institute Inc. Modified silicone oil-in-water emulsion defoaming agent and defoaming method using it
US5562862A (en) * 1994-04-06 1996-10-08 Betz Laboratories, Inc. Polybutene-based foam control composition for aqueous systems
EP0687725A1 (fr) * 1994-06-17 1995-12-20 Dow Corning S.A. Agent pour la régulation de la mousse
WO1996011733A1 (fr) * 1994-10-13 1996-04-25 Henkel Corporation Composition antimousse et son procede d'utilisation
DE19621595C1 (de) * 1996-05-30 1997-09-11 Henkel Kgaa Verwendung von Dicarbonsäureestern als Entschäumer für Kühlschmierstoffe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 199348, Derwent World Patents Index; Class E14, AN 1993-383978, XP002037175 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110248213A1 (en) * 2010-04-12 2011-10-13 Cognis Ip Management Gmbh Defoaming Agents and Articles and Methods Using Same
US8802739B2 (en) * 2010-04-12 2014-08-12 Cognis Ip Management Gmbh Defoaming agents and articles and methods using same
CN103866609A (zh) * 2014-02-25 2014-06-18 苏州恒康新材料有限公司 一种造纸消泡剂及其制备方法
CN103866609B (zh) * 2014-02-25 2016-03-30 新昌县鸿裕工业产品设计有限公司 一种造纸消泡剂及其制备方法
CN111437632A (zh) * 2020-04-17 2020-07-24 五色石新材料(杭州)有限公司 一种利用聚醚改性硅油制备乳液型消泡剂的方法
JP2025026278A (ja) * 2023-08-08 2025-02-21 ヒンドゥスタン ペトロリアム コーポレーション リミテッド 消泡剤／破泡剤

Also Published As

Publication number Publication date
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