GB892787A - Improvements in or relating to anti-foaming agents - Google Patents

Improvements in or relating to anti-foaming agents

Info

Publication number
GB892787A
GB892787A GB29609/60A GB2960960A GB892787A GB 892787 A GB892787 A GB 892787A GB 29609/60 A GB29609/60 A GB 29609/60A GB 2960960 A GB2960960 A GB 2960960A GB 892787 A GB892787 A GB 892787A
Authority
GB
United Kingdom
Prior art keywords
gum
agent
encapsulating
siloxane
agent per
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.)
Expired
Application number
GB29609/60A
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.)
Dow Silicones Corp
Original Assignee
Dow Corning 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 Dow Corning Corp filed Critical Dow Corning Corp
Publication of GB892787A publication Critical patent/GB892787A/en
Expired 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
    • B01D19/0409—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance compounds containing Si-atoms

Landscapes

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

Abstract

A free-flowing dry powder comprising a silicone anti-foaming agent encapsulated in a water-soluble film-forming material, may be made by spray drying an aqueous emuslion of a diorganopolysiloxane, filler and water-soluble film-forming material. The encapsulating agent can be used in amount of from 1 part (by weight) of agent per 30 pts. of siloxane to 100 pts. of agent per part of siloxane. Ingredients specified are: dimethyl- and diethyl-polysiloxanes; encapsulating agents-methyl cellulose, starch, gelatin, albumen, gum acacia, gum tragacanth, locust bean gum, Irish moss, polyvinyl alcohol, polyethylene glycol and guar gum; fillers-silica aerogels. Additional ingredients are bacteria inhibitors, e.g. sorbic acid, surfactants, carbamates to aid in disintegrating the powder in the system to be defoamed, and colouring agents. Specifications 639,673, 689,506 and 859,329 are referred to.ALSO:A free-flowing dry powder comprising a silicone antifoaming agent encapsulated in a watersoluble film-forming material, may be made by spray drying an aqueous emulsion of a diorganopolysiloxane, filler and water-soluble filmforming material. The encapsulating agent can be used in amount of from 1 part (by weight) of agent per 30 parts of siloxane to 100 parts of agent per part of xiloxane. Ingredients specified are: dimethyl- and diethyl-polysiloxanes; encapsulating agents-methyl cellulose, starch, gelatin, albumen, gum acacia, gum tragacanth, locust bean gum, Irish moss, polyvinyl alcohol, polyethylene glycol and guar gum; fillers-silica aerogels. Additional ingredients are bacteria inhibitors, e.g. sorbic acid, surfactants, carbamates to aid in disintegrating the powder in the system to be defoamed, and colouring agents. In a typical Example (1) an aqueous emulsion of a dimethylsiloxane gum, fume silica, methyl cellulose and sorbic acid, was spray dried (by spraying in to the top of a heated column with a counter-current of heated air) to yield a fine, freeflowing dry powder. Specifications 639,673, 689,506 and 859,329 are referred to.
GB29609/60A 1959-09-16 1960-08-26 Improvements in or relating to anti-foaming agents Expired GB892787A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US892787XA 1959-09-16 1959-09-16

Publications (1)

Publication Number Publication Date
GB892787A true GB892787A (en) 1962-03-28

Family

ID=22216725

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29609/60A Expired GB892787A (en) 1959-09-16 1960-08-26 Improvements in or relating to anti-foaming agents

Country Status (1)

Country Link
GB (1) GB892787A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0097867A2 (en) * 1982-06-29 1984-01-11 Th. Goldschmidt AG Powdery anti-foam agent and process for its preparation
EP0187266A2 (en) * 1984-12-05 1986-07-16 Toray Silicone Company Limited Solid silicone defoaming agent and method for its production
EP0228657A2 (en) * 1985-12-19 1987-07-15 Wacker-Chemie Gmbh Powders redispersable in water, containing a water soluble polymer and at least one organic silicon compound, method for their preparation and use of such powders
DE3704400A1 (en) * 1987-02-12 1988-08-25 Wacker Chemie Gmbh POWDER CONTAINING IN WATER REDISPERGABLE, ORGANO (POLY) SILOXANE AND METHOD FOR THE PRODUCTION THEREOF
EP0336710A1 (en) * 1988-04-07 1989-10-11 Dow Corning Corporation Delayed release antifoam additives
EP0339958A2 (en) * 1988-04-27 1989-11-02 Dow Corning Corporation Encapsulated silicone antifoam compositions
US5024937A (en) * 1989-04-06 1991-06-18 Dow Corning Corporation Method for processing aqueous fermentation broths
US5078888A (en) * 1989-04-06 1992-01-07 Dow Corning Corporation Method for processing aqueous fermentation broths
EP0484081A2 (en) * 1990-10-31 1992-05-06 Unilever Plc Antifoam ingredient
GB2318355A (en) * 1996-09-27 1998-04-22 Gen Electric An encapsulated anti-foaming agent
EP0900562A1 (en) * 1997-09-05 1999-03-10 Nissho Corporation Lavage solution for intestinal tract
US20140336284A1 (en) * 2011-11-16 2014-11-13 Shin-Etsu Chemical Co., Ltd. Powder antifoaming agent and method for producing same
WO2016001934A1 (en) * 2014-06-30 2016-01-07 Wacker Metroark Chemicals Pvt. Ltd. Composition and process of making an amino silicone based delayed antifoam for use in laundry detergent

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0097867A2 (en) * 1982-06-29 1984-01-11 Th. Goldschmidt AG Powdery anti-foam agent and process for its preparation
EP0097867A3 (en) * 1982-06-29 1984-11-07 Th. Goldschmidt AG Powdery anti-foam agent and process for its preparation
EP0187266A2 (en) * 1984-12-05 1986-07-16 Toray Silicone Company Limited Solid silicone defoaming agent and method for its production
EP0187266A3 (en) * 1984-12-05 1986-10-01 Toray Silicone Company Limited Solid silicone defoaming agent and method for its production
EP0228657A2 (en) * 1985-12-19 1987-07-15 Wacker-Chemie Gmbh Powders redispersable in water, containing a water soluble polymer and at least one organic silicon compound, method for their preparation and use of such powders
EP0228657A3 (en) * 1985-12-19 1989-05-24 Wacker-Chemie Gmbh Powders redispersable in water, containing a water soluble polymer and at least one organic silicon compound, method for their preparation and use of such powders
DE3704400A1 (en) * 1987-02-12 1988-08-25 Wacker Chemie Gmbh POWDER CONTAINING IN WATER REDISPERGABLE, ORGANO (POLY) SILOXANE AND METHOD FOR THE PRODUCTION THEREOF
EP0336710A1 (en) * 1988-04-07 1989-10-11 Dow Corning Corporation Delayed release antifoam additives
EP0339958A2 (en) * 1988-04-27 1989-11-02 Dow Corning Corporation Encapsulated silicone antifoam compositions
EP0339958A3 (en) * 1988-04-27 1990-08-08 Dow Corning Corporation Encapsulated silicone antifoam compositions
US5024937A (en) * 1989-04-06 1991-06-18 Dow Corning Corporation Method for processing aqueous fermentation broths
US5078888A (en) * 1989-04-06 1992-01-07 Dow Corning Corporation Method for processing aqueous fermentation broths
EP0484081A2 (en) * 1990-10-31 1992-05-06 Unilever Plc Antifoam ingredient
EP0484081A3 (en) * 1990-10-31 1992-09-09 Unilever Plc Antifoam ingredient
GB2318355A (en) * 1996-09-27 1998-04-22 Gen Electric An encapsulated anti-foaming agent
GB2318355B (en) * 1996-09-27 2000-06-14 Gen Electric An antifoam delivery system
EP0900562A1 (en) * 1997-09-05 1999-03-10 Nissho Corporation Lavage solution for intestinal tract
US6121250A (en) * 1997-09-05 2000-09-19 Nissho Corporation Lavage solution for intestinal tract
US20140336284A1 (en) * 2011-11-16 2014-11-13 Shin-Etsu Chemical Co., Ltd. Powder antifoaming agent and method for producing same
EP2781247A4 (en) * 2011-11-16 2015-05-06 Shinetsu Chemical Co Powder antifoaming agent and method for producing same
US9272232B2 (en) 2011-11-16 2016-03-01 Shin-Etsu Chemical Co., Ltd. Powder antifoaming agent and method for producing same
WO2016001934A1 (en) * 2014-06-30 2016-01-07 Wacker Metroark Chemicals Pvt. Ltd. Composition and process of making an amino silicone based delayed antifoam for use in laundry detergent
US10144905B2 (en) 2014-06-30 2018-12-04 Wacker Metroark Chemicals Pvt. Ltd. Composition and process of making an amino silicone based delayed antifoam for use in laundry detergent

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