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PROSES PENGHAMBATAN KERAK DALAM SISTEM YANG KERAS DAN ZAT ANTI-KERAK BARU UNTUK SISTEM YANG SAMA

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Title:
PROSES PENGHAMBATAN KERAK DALAM SISTEM YANG KERAS DAN ZAT ANTI-KERAK BARU UNTUK SISTEM YANG SAMA
Author: STEVEN JOHN SEVERTSON ; PRASAD YOGENDRA DUGGIRALA ; JOHN DAVID MORRIS ; PETER EDWARD REED
Subjects: APPARATUS THEREFOR ; CHEMISTRY ; COMPOSITIONS BASED THEREON ; IMPREGNATING OR COATING OF PAPER ; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS ; METALLURGY ; ORGANIC MACROMOLECULAR COMPOUNDS ; PAPER NOT OTHERWISE PROVIDED FOR ; PAPER-MAKING ; 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 PREPARATION OR CHEMICAL WORKING-UP ; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G ; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Description: An improved process for inhibiting calcium carbonate scaling in aqueous systems such as that employed in the kraft process for the production of wood pulp. Such an improved process is achieved by the addition to the system of at least one antiscalant comprising at least one monomer unit derived from the group consisting of 1,2-dihydroxy-3-butene, N-(hydroxymethyl) acrylamide, and N-(sulfomethyl) acrylamide, and at least one monomer unit derived from the group consisting of maleic acid, acrylic acid, acrylamide, methacrylic acid, itaconic acid, vinyl sulfonic acid, styrene sulfonic acid, N-tertbutylacrylamide, butoxymethylacrylamide, N,N-dimethylacrylamide, sodium acrylamidomethyl propane sulfonic acid, and salts thereof, with the proviso that said polymers do not contain the monomer unit -(CH2-CH=CH-CH2-O)-.
Creation Date: 2001
Language: Indonesian
Source: esp@cenet

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PROSES PENGHAMBATAN KERAK DALAM SISTEM YANG KERAS DAN ZAT ANTI-KERAK BARU UNTUK SISTEM YANG SAMA

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