BE788250A - Silicone antifoam - consisting of polyoxypropylene (co)polymer, or siloxane-glycol copolymer, polymethylsiloxane, silica and siloxane - Google Patents

Silicone antifoam - consisting of polyoxypropylene (co)polymer, or siloxane-glycol copolymer, polymethylsiloxane, silica and siloxane

Info

Publication number
BE788250A
BE788250A BE788250DA BE788250A BE 788250 A BE788250 A BE 788250A BE 788250D A BE788250D A BE 788250DA BE 788250 A BE788250 A BE 788250A
Authority
BE
Belgium
Prior art keywords
polyoxypropylene
units
siloxane
osimeg
osime2
Prior art date
Application number
Other languages
French (fr)
Inventor
J W Kiel
Original Assignee
Dow Corning
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.)
Publication date
Publication of BE788250A publication Critical patent/BE788250A/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/651—Compounds without nitrogen
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
    • C08L71/02—Polyalkylene oxides
    • 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
    • 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
    • C08L83/10—Block- or graft-copolymers containing polysiloxane sequences
    • C08L83/12—Block- or graft-copolymers containing polysiloxane sequences containing polyether sequences
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/60—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing polyethers
    • D06P1/613—Polyethers without nitrogen
    • 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
    • C08G77/045—Polysiloxanes containing less than 25 silicon atoms
    • 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
    • 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
    • C08G77/46—Block-or graft-polymers containing polysiloxane sequences containing polyether sequences

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Toxicology (AREA)
  • Dispersion Chemistry (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Silicone antifoam compsn. for aqs. systems consists of (I) 70-98 wt.% base oil selected from polyoxypropylene polymers, and polyoxypropylene-polyoxyethylene copolymers having a mol.wt. of 500-6000, and siloxane-glycol copolymers of formula Ia-Id:- RaSi (OSiME2)n(OSiMeG)bOSiMe2G 4-a Ia RaSi (OSiMe2)n(OSiMeG)cOSiMe3 4-a Ib GMe2Si(OSiMe2)n(OSiMeG)bOSiMe2G Ic Me3Si(OSiMe2)n(OSiMeG) OSiMe3 Id (where R is C1-10 hydrocarbyl free of aliphatic unsaturation; Me is methyl; G is a group of formula -D(OR')mA; A is a terminal blocking group; D is C1-30 alkylene; R' is C2-10 alkylene; m is at least 1; a is 0 or 1; n is at least 12; b is 0-50; and C is 1-50), (II) 1-20 wt.% antifoam agent consisting of 88-95 pts. wt. liquid polymethylsiloxane with a viscosity of at least 20 cst., 5-10 pts. wt. silica and 0-2 pts.wt. siloxane resin contg. SiO2 and (CH3)3SiO1/2 units in a ratio of 1:0.4-1.2, and (III) 0.1-10 wt.% dispersing agent selected from (a) copolymers contg. SiO2 units, (CH3)3SiO1/2 units and Q(CH3)2SiO1/2 (where Q is polyoxypropylene polymer, or polyoxypropylene/polyoxyethylene copolymer with a mol. wt. of 500-6000, Q being fixed to the Si atom by an Si-C bond, the ratio of SiO2 units to the other units being 1:0.4-1.2, and (b) copolymers obtained by heating a mixt. of a siloxane copolymer contg. SiO2 and (CH3)3SiO1/2 units in a ratio of 1:0.4-1.2, and a hydroxylated polyoxypropylene copolymer or hydrated polyoxypropylene-polyoxyethylene copolymer having a mol.wt. of 500-6000. Cpds. have a polyoxypropylene or a copolymer of formula Me3Si(OSiMe2)25(OSiMeG)7OSiMe3 (where G is -(CH2)3(OC2H6)26(OC3H6)24OOCCH3; and Me is methyl). In II, the polydimethylsiloxane has a viscosity of 20-2000 cst., and the silica is a precipitated silica. The compsn. also contains 0-10 wt.% solvent. High antifoam action. Easily dispersed in aqs. systems.
BE788250D 1972-05-15 Silicone antifoam - consisting of polyoxypropylene (co)polymer, or siloxane-glycol copolymer, polymethylsiloxane, silica and siloxane BE788250A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25361772A 1972-05-15 1972-05-15

Publications (1)

Publication Number Publication Date
BE788250A true BE788250A (en) 1973-02-28

Family

ID=22961006

Family Applications (1)

Application Number Title Priority Date Filing Date
BE788250D BE788250A (en) 1972-05-15 Silicone antifoam - consisting of polyoxypropylene (co)polymer, or siloxane-glycol copolymer, polymethylsiloxane, silica and siloxane

Country Status (3)

Country Link
JP (1) JPS5222638B2 (en)
BE (1) BE788250A (en)
IT (1) IT962862B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3984347A (en) * 1974-12-19 1976-10-05 Dow Corning Corporation Foam control composition
FR2351156A1 (en) * 1976-05-11 1977-12-09 Rhone Poulenc Ind ORGANOSILICIC COMPOSITIONS SHOWING STABLE ANTI-FOAM ACTIVITY
JPS5490109A (en) * 1977-12-24 1979-07-17 Basf Ag Manufacture of fatty hydroxycarbonyl compound etherified with fatty group
JPS58196358U (en) * 1982-06-23 1983-12-27 三菱電機株式会社 Passenger conveyor step protection sheet
US4439625A (en) * 1982-09-29 1984-03-27 E. I. Du Pont De Nemours And Company Production of formaldehyde
JPS5971261U (en) * 1982-11-05 1984-05-15 三菱電機株式会社 Passenger conveyor step protection sheet
GB0901662D0 (en) * 2009-02-04 2009-03-11 Dow Corning Foam control composition
JP5754402B2 (en) 2011-04-07 2015-07-29 信越化学工業株式会社 Oil compound for antifoam and antifoam composition
WO2015087628A1 (en) * 2013-12-10 2015-06-18 信越化学工業株式会社 Antifoaming agent composition
JP6233037B2 (en) * 2014-01-16 2017-11-22 信越化学工業株式会社 Organosilicone emulsion composition
CN106659950B (en) 2014-08-05 2020-04-21 信越化学工业株式会社 Oil composition for defoaming agent, method for producing same, and defoaming agent composition

Also Published As

Publication number Publication date
JPS5222638B2 (en) 1977-06-18
JPS4924889A (en) 1974-03-05
IT962862B (en) 1973-12-31

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Legal Events

Date Code Title Description
RE20 Patent expired

Owner name: DOW CORNING CORP.

Effective date: 19920831