GB1496011A - Defoaming composition - Google Patents

Defoaming composition

Info

Publication number
GB1496011A
GB1496011A GB4695/75A GB469575A GB1496011A GB 1496011 A GB1496011 A GB 1496011A GB 4695/75 A GB4695/75 A GB 4695/75A GB 469575 A GB469575 A GB 469575A GB 1496011 A GB1496011 A GB 1496011A
Authority
GB
United Kingdom
Prior art keywords
composition
units
oil
defoamer
hydrocarbon
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
GB4695/75A
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
Priority to DK43676*#A priority Critical patent/DK43676A/en
Priority to SE7601125A priority patent/SE7601125L/en
Priority to JP51010786A priority patent/JPS51126281A/en
Priority to NL7601132A priority patent/NL7601132A/en
Priority to BE164096A priority patent/BE838273A/en
Publication of GB1496011A publication Critical patent/GB1496011A/en
Priority to CA314,487A priority patent/CA1079268A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
    • C08G77/16—Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxyl groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
    • C08G77/18—Polysiloxanes containing silicon bound to oxygen-containing groups to alkoxy or aryloxy groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/42—Block-or graft-polymers containing polysiloxane sequences
    • C08G77/44—Block-or graft-polymers containing polysiloxane sequences containing only polysiloxane sequences

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Degasification And Air Bubble Elimination (AREA)

Abstract

1496011 Defoaming composition DOW CORNING CORP 4 Feb 1975 [22 Nov 1974] 4695/75 Heading C1C [Also in Division C3] A composition suitable for use in an oil-base defoamer consists essentially of (1) from 55-96% wt of a siloxane of the unit formula in which x is of such a value that there is from 10-35% wt. of methoxy groups based on the weight of (1); (2) from 2-25% wt. of a hydrocarbon-solvent soluble copolymer of units and SiO 2 units in a mole ratio of from 0À5:1 to 1À2:1; and (3) from 2-25% wt. of a silicon-bonded hydroxyl terminated methylpolysiloxane fluid containing a major proportion of dimethylsiloxane units, the proportions of (1), (2) and (3) being based on the combined weights of (1), (2) and (3). The above composition can be used in a defoaming composition for aqueous systems by mixing (A) 100 p.b.w. of a mineral oil, (B) 3-20 p.b.w. of the above siloxane composition and (C) a condensation catalyst for (B) and then heating the mixture at a temperature of at least 50‹ C. The mineral oils are the hydrocarbon oils derived from carbonaceous sources such as petroleum, shale and coal. Optional additives to the defoamer composition are thickening agents, e.g. hydrogenated castor oil; inert fillers, e.g. aluminium oxide, silica and clays; spreading agents such as higher fatty acids or anionic, cationic or non-ionic surfactants. Suitable catalysts are amines, amine salts, ammonia, ammonium compounds, metal salts of carboxylic acids and esters of titanium and zirconium. In the examples defoamer compositions are prepared from a mineral oil, ammonium carbonate as catalyst, hydrogenated castor oil as thickener, a tall oil fatty acid wetting agent and varying amounts of (1) an aliphatic hydrocarbon solvent solution of a methoxylated monomethylsiloxane containing 12% wt. of methoxy groups, a toluene solution of a copolymer of units in a mole ratio of 0À6, and an hydroxylterminated dimethylpolysiloxane fluid. The compositions are used to defoam black liquor in a pump test.
GB4695/75A 1974-11-22 1975-02-04 Defoaming composition Expired GB1496011A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DK43676*#A DK43676A (en) 1975-02-04 1976-02-03 METHOD FOR THE PREPARATION OF A CYTOTOXIC AGENT
SE7601125A SE7601125L (en) 1975-02-04 1976-02-03 PROCEDURE FOR THE PREPARATION OF A CYTOTOXIC AGENT
JP51010786A JPS51126281A (en) 1975-02-04 1976-02-03 Cytootoxic substance
NL7601132A NL7601132A (en) 1975-02-04 1976-02-04 Cytotoxic medicaments bonded to polymeric carrier - e.g. dextran, which is itself bonded to immunoglobulin specific for cells to be killed
BE164096A BE838273A (en) 1975-02-04 1976-02-04 IMMUNOLOGICAL CYTOTOXIC AGENTS
CA314,487A CA1079268A (en) 1975-02-04 1978-10-27 Immunological materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US52628274A 1974-11-22 1974-11-22

Publications (1)

Publication Number Publication Date
GB1496011A true GB1496011A (en) 1977-12-21

Family

ID=24096688

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4695/75A Expired GB1496011A (en) 1974-11-22 1975-02-04 Defoaming composition

Country Status (9)

Country Link
JP (1) JPS5162193A (en)
AT (1) AT345253B (en)
BE (1) BE826633A (en)
BR (1) BR7507682A (en)
DE (1) DE2506203A1 (en)
FR (1) FR2291783A1 (en)
GB (1) GB1496011A (en)
IT (1) IT1031570B (en)
NL (1) NL7501636A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0802231A2 (en) * 1996-04-19 1997-10-22 Dow Corning Corporation Silicone compositions and uses thereof
EP0802228A2 (en) * 1996-04-19 1997-10-22 Dow Corning Corporation Silicone compositions and uses thereof
EP0802230A2 (en) * 1996-04-19 1997-10-22 Dow Corning Corporation Dispersible silicone compostions
US20150291841A1 (en) * 2012-11-12 2015-10-15 Torrecid, S.A. Digital glaze composition for ink jet printing

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2903725A1 (en) * 1979-01-31 1980-08-21 Wacker Chemie Gmbh ANTI-FOAM AGENTS
DE2952287A1 (en) * 1979-12-24 1981-07-02 Henkel KGaA, 4000 Düsseldorf METHOD FOR PRODUCING A POLYSILOXANE BLOCK POLYMERISATE AND THE USE THEREOF AS A FOAM INHIBITOR
JPS60251906A (en) * 1984-05-30 1985-12-12 Dow Corning Kk Preparation of silicone defoaming composition
CA1297757C (en) * 1986-07-18 1992-03-24 Takahiro Miura Method for the preparation of a silicone defoamer composition
JPS6344905A (en) * 1987-05-29 1988-02-25 Dow Corning Kk Manufacture of silicone anti-foaming agent composition

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0802231A2 (en) * 1996-04-19 1997-10-22 Dow Corning Corporation Silicone compositions and uses thereof
EP0802228A2 (en) * 1996-04-19 1997-10-22 Dow Corning Corporation Silicone compositions and uses thereof
EP0802230A2 (en) * 1996-04-19 1997-10-22 Dow Corning Corporation Dispersible silicone compostions
EP0802231A3 (en) * 1996-04-19 1998-03-25 Dow Corning Corporation Silicone compositions and uses thereof
EP0802228A3 (en) * 1996-04-19 1998-03-25 Dow Corning Corporation Silicone compositions and uses thereof
US5861453A (en) * 1996-04-19 1999-01-19 Dow Corning Corporation Silicone compositions and uses thereof
US5908891A (en) * 1996-04-19 1999-06-01 Dow Corning Corporation Dispersible silicone compositions
EP0802230B1 (en) * 1996-04-19 2002-10-23 Dow Corning Corporation Dispersible silicone compostions
US20150291841A1 (en) * 2012-11-12 2015-10-15 Torrecid, S.A. Digital glaze composition for ink jet printing

Also Published As

Publication number Publication date
ATA114275A (en) 1978-01-15
BR7507682A (en) 1976-08-10
IT1031570B (en) 1979-05-10
AT345253B (en) 1978-09-11
BE826633A (en) 1975-09-15
DE2506203A1 (en) 1976-05-26
JPS5162193A (en) 1976-05-29
AU7796175A (en) 1976-08-12
NL7501636A (en) 1976-05-25
FR2291783B1 (en) 1979-10-19
FR2291783A1 (en) 1976-06-18

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee