RO103606A2 - Optical bleaching method in paper mass highly sized in acid medium - Google Patents

Optical bleaching method in paper mass highly sized in acid medium

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Publication number
RO103606A2
RO103606A2 RO14081589A RO14081589A RO103606A2 RO 103606 A2 RO103606 A2 RO 103606A2 RO 14081589 A RO14081589 A RO 14081589A RO 14081589 A RO14081589 A RO 14081589A RO 103606 A2 RO103606 A2 RO 103606A2
Authority
RO
Romania
Prior art keywords
acid medium
bleaching method
optical bleaching
paper mass
highly sized
Prior art date
Application number
RO14081589A
Other languages
Romanian (ro)
Inventor
Dan Buteica
Ticu Pavaleanu
Penilopia Mohorea
Original Assignee
Combinatul Celuloza Hirtie
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 Combinatul Celuloza Hirtie filed Critical Combinatul Celuloza Hirtie
Priority to RO14081589A priority Critical patent/RO103606A2/en
Publication of RO103606A2 publication Critical patent/RO103606A2/en

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Abstract

The process comprises neutralisation of paper paste of below 5.5 pH. The aluminium sulphate content of 1-6 wt.% and Ca 1.0% of NaOH, relative to the pulp, are supplemented by stilbene triazinic bleaching agent. The bleaching agent concentration is 0.4% relative to the tone of the paper.
RO14081589A 1989-07-17 1989-07-17 Optical bleaching method in paper mass highly sized in acid medium RO103606A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO14081589A RO103606A2 (en) 1989-07-17 1989-07-17 Optical bleaching method in paper mass highly sized in acid medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO14081589A RO103606A2 (en) 1989-07-17 1989-07-17 Optical bleaching method in paper mass highly sized in acid medium

Publications (1)

Publication Number Publication Date
RO103606A2 true RO103606A2 (en) 1991-11-02

Family

ID=20125240

Family Applications (1)

Application Number Title Priority Date Filing Date
RO14081589A RO103606A2 (en) 1989-07-17 1989-07-17 Optical bleaching method in paper mass highly sized in acid medium

Country Status (1)

Country Link
RO (1) RO103606A2 (en)

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