FR2248863A1 - Antifoaming agents esp. for addn. to paper pulp - contg. org. diamide, silicone oil and mineral oil - Google Patents

Antifoaming agents esp. for addn. to paper pulp - contg. org. diamide, silicone oil and mineral oil

Info

Publication number
FR2248863A1
FR2248863A1 FR7434609A FR7434609A FR2248863A1 FR 2248863 A1 FR2248863 A1 FR 2248863A1 FR 7434609 A FR7434609 A FR 7434609A FR 7434609 A FR7434609 A FR 7434609A FR 2248863 A1 FR2248863 A1 FR 2248863A1
Authority
FR
France
Prior art keywords
oil
addn
diamide
contg
units
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.)
Withdrawn
Application number
FR7434609A
Other languages
French (fr)
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.)
Buckman Laboratories Inc
Original Assignee
Buckman Laboratories 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 Buckman Laboratories Inc filed Critical Buckman Laboratories Inc
Publication of FR2248863A1 publication Critical patent/FR2248863A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/28—Prevention of foam
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Lubricants (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The anti-foaming agents comprise (A) 2-20% wt. of a diamide R-NH-CO-R'-CO-NH-R, in which R = 8-22 C alkyl gp. and R1 = 1-8 C (un)satd. alkylene gp., (B) 0.5-5 wt. % silicone oil and 75-97.5 wt. % of a mineral oil. The anti-foams are esp. useful for addn. to paper pulp during milling. Suitable diamides (A) are N,N'-dioctadecyl adipamide, N,N'-dioctadecyl azelamide, and N,N'-dioctadecyl maleamide. Silicone oil (B) is pref. chosen from OH-terminated dimethylpolysiloxanes with a viscosity of is less than or =35 centistokes at 25 degrees C and organopolysiloxanes soluble in benzene, contg. (i) SiO2 units and (ii) units R3SIO1/2 where R = monovalent hydrocarbon radical with 1-6 C, with a ratio units (i): units (ii) = 1.id1 to 0.6:1. Mineral oil (C) is pref. a largely paraffinic oil with a viscosity of 100-110 S.S.U. at 37.8 degrees C.
FR7434609A 1973-10-29 1974-10-15 Antifoaming agents esp. for addn. to paper pulp - contg. org. diamide, silicone oil and mineral oil Withdrawn FR2248863A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US41074273A 1973-10-29 1973-10-29

Publications (1)

Publication Number Publication Date
FR2248863A1 true FR2248863A1 (en) 1975-05-23

Family

ID=23626030

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7434609A Withdrawn FR2248863A1 (en) 1973-10-29 1974-10-15 Antifoaming agents esp. for addn. to paper pulp - contg. org. diamide, silicone oil and mineral oil

Country Status (14)

Country Link
JP (1) JPS5074583A (en)
AR (1) AR201863A1 (en)
AU (1) AU6940074A (en)
BE (1) BE821554A (en)
BR (1) BR7409059A (en)
DE (1) DE2420955A1 (en)
ES (1) ES429965A1 (en)
FI (1) FI137174A (en)
FR (1) FR2248863A1 (en)
IT (1) IT1018722B (en)
NL (1) NL7407636A (en)
NO (1) NO741884L (en)
SE (1) SE7407620L (en)
ZA (1) ZA742936B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3008952A1 (en) * 1980-03-08 1981-09-24 Bayer Ag, 5090 Leverkusen FOAM ABSORBERS, THEIR PRODUCTION AND USE IN AQUEOUS SYSTEMS
DE3146168C2 (en) * 1981-11-21 1986-07-24 Neosid Pemetzrieder Gmbh & Co Kg, 5884 Halver Inductive component, in particular a coil for high and very high frequencies and a method for producing such a component
US5180802A (en) * 1990-07-18 1993-01-19 Rheox, Inc. Monoamine capped non-reactive polyamide composition
JP2002143606A (en) * 2000-11-07 2002-05-21 Nikko Kagaku Kenkyusho:Kk Defoaming agent composition and method for producing the same

Also Published As

Publication number Publication date
AU6940074A (en) 1975-11-27
NL7407636A (en) 1975-05-02
ZA742936B (en) 1975-05-28
NO741884L (en) 1975-05-26
BE821554A (en) 1975-02-17
BR7409059A (en) 1976-05-11
FI137174A (en) 1975-04-30
ES429965A1 (en) 1976-09-16
IT1018722B (en) 1977-10-20
DE2420955A1 (en) 1975-05-07
SE7407620L (en) 1975-04-30
JPS5074583A (en) 1975-06-19
AR201863A1 (en) 1975-04-24

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Legal Events

Date Code Title Description
ST Notification of lapse