ANTIFOAMS FOR THE PAPER INDUSTRY BASED ON OIL-IN-WATER EMULSIONS

Antifoams for the paper industry are based on oil-in-water emulsions in which the oil phase accounts for from 5 to 50% by weight of the emulsion and contains (a) an alcohol of not less than 12 carbon atoms, fatty esters of alcohols of not less than 22 carbon atoms arid C1-C36-carboxylic acids, disti...

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Bibliographic Details
Main Authors HOHMANN, ANDREAS, OPPENLAENDER, KNUT, WEGNER, BRIGITTE, SCHUHMACHER, RUDOLF, DRALLE, GABRIELE
Format Patent
LanguageEnglish
French
Published 22.01.2002
Edition5
Subjects
ADHESIVES
APPARATUS THEREFOR
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
DYES
IMPREGNATING OR COATING OF PAPER
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
PAPER NOT OTHERWISE PROVIDED FOR
PAPER-MAKING
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
POLISHES
PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D
PRODUCTION OF CELLULOSE
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
PULP COMPOSITIONS
REGENERATION OF PULPING LIQUORS
TEXTILES
THEIR RELEVANT APPARATUS
TRANSPORTING
TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKINGMACHINE
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Summary:Antifoams for the paper industry are based on oil-in-water emulsions in which the oil phase accounts for from 5 to 50% by weight of the emulsion and contains (a) an alcohol of not less than 12 carbon atoms, fatty esters of alcohols of not less than 22 carbon atoms arid C1-C36-carboxylic acids, distillation residues which are obtainable in the preparation of alcohols having a relatively large number of carbon atoms by the oxo synthesis or by the Ziegler method and which may be alkoxylated, a mixture of the stated com- pounds and/or (b) a fatty ester of C12-C22-carboxylic acid with a monohydric to trihydric C1-C18-alcohol and, if required, (c) a hydrocarbon having a boiling point above 200.degree.C or a fatty acid of 12 to 22 carbon atoms, in combination with (d) from 1 to 80% by weight of polyglyceryl esters which can be prepared by not less than 20% esterification of a polyglycerol mixture which contains, as essential components, di-, tri- and tetraglycerol and, if required, polyglycerols having higher degrees of condensation with saturated or un- saturated C12-C36-fatty acids.
Bibliography:Application Number: CA19922074054