CA971851A - Amides and hydrophobic silica as antifoams - Google Patents

Amides and hydrophobic silica as antifoams

Info

Publication number
CA971851A
CA971851A CA143,918A CA143918A CA971851A CA 971851 A CA971851 A CA 971851A CA 143918 A CA143918 A CA 143918A CA 971851 A CA971851 A CA 971851A
Authority
CA
Canada
Prior art keywords
antifoams
amides
hydrophobic silica
hydrophobic
silica
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
CA143,918A
Other versions
CA143918S (en
Inventor
Raymond J. Michalski
Roger W. Youngs
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.)
ChampionX LLC
Original Assignee
Nalco Chemical Co
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 Nalco Chemical Co filed Critical Nalco Chemical Co
Application granted granted Critical
Publication of CA971851A publication Critical patent/CA971851A/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
    • 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
    • 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
    • B01D19/0413—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance compounds containing N-atoms
    • 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/10—Concentrating spent liquor by evaporation
CA143,918A 1971-09-07 1972-06-05 Amides and hydrophobic silica as antifoams Expired CA971851A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17850871A 1971-09-07 1971-09-07

Publications (1)

Publication Number Publication Date
CA971851A true CA971851A (en) 1975-07-29

Family

ID=22652811

Family Applications (1)

Application Number Title Priority Date Filing Date
CA143,918A Expired CA971851A (en) 1971-09-07 1972-06-05 Amides and hydrophobic silica as antifoams

Country Status (5)

Country Link
JP (1) JPS5222356B2 (en)
CA (1) CA971851A (en)
FI (1) FI54058C (en)
NO (1) NO130265B (en)
SE (1) SE376721B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS518806A (en) * 1974-07-10 1976-01-24 Hitachi Ltd Shingo tsuwakirikaehoshiki
JPS5259505A (en) * 1975-11-10 1977-05-17 Itagaki Kougiyou Kk Speed broadcasting system
US4225456A (en) * 1978-11-06 1980-09-30 Diamond Shamrock Corporation Water-in-oil emulsion defoamer compositions, their preparation and use
AU547364B2 (en) * 1981-09-16 1985-10-17 Unilever Plc Antifoam composition
JP2002143606A (en) * 2000-11-07 2002-05-21 Nikko Kagaku Kenkyusho:Kk Defoaming agent composition and method for producing the same
CN112717479A (en) * 2020-12-29 2021-04-30 新疆水处理工程技术研究中心有限公司 Polyether defoaming agent and preparation method thereof

Also Published As

Publication number Publication date
JPS4836084A (en) 1973-05-28
NO130265B (en) 1974-08-05
JPS5222356B2 (en) 1977-06-16
FI54058B (en) 1978-06-30
SE376721B (en) 1975-06-09
FI54058C (en) 1978-10-10

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