IT1056871B - Paper pulp prepn. from dicotyledonous plants - gives high yields of bast fibres using an oxidising agent during pulping (BR 18.10.77) - Google Patents

Paper pulp prepn. from dicotyledonous plants - gives high yields of bast fibres using an oxidising agent during pulping (BR 18.10.77)

Info

Publication number
IT1056871B
IT1056871B IT2085276A IT2085276A IT1056871B IT 1056871 B IT1056871 B IT 1056871B IT 2085276 A IT2085276 A IT 2085276A IT 2085276 A IT2085276 A IT 2085276A IT 1056871 B IT1056871 B IT 1056871B
Authority
IT
Italy
Prior art keywords
bast fibres
prepn
paper pulp
high yields
fibres
Prior art date
Application number
IT2085276A
Other languages
Italian (it)
Inventor
Ruffini Guglielmo
E Pezzotti
Original Assignee
Consorzio Fabocart
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 Consorzio Fabocart filed Critical Consorzio Fabocart
Priority to IT2085276A priority Critical patent/IT1056871B/en
Priority to MX16825477A priority patent/MX144994A/en
Priority to BR7701349A priority patent/BR7701349A/en
Priority to AR26676077A priority patent/AR223635A1/en
Priority to IN321/CAL/77A priority patent/IN146283B/en
Priority to AU23349/77A priority patent/AU506638B2/en
Application granted granted Critical
Publication of IT1056871B publication Critical patent/IT1056871B/en

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Abstract

The plants are stirred in a pulper in an alkaline soln. in the presence of a surfactant and >=1 stain inhibiting agent. This agent is a peroxide or sodium hypochlorite, and prevents staining of the plant fibres. The resultant stock contains a woody core fraction and a bark fraction of bast fibres, and these fractions are divided by a suitable method. The bark fraction is subsequently cooked and bleached under atmospheric pressure in an alkaline soln. contg. an alkyl sulphate surfactant and either H2O2 or tert. butyl hydroperoxide. The method produces bast fibres in higher yield, but still retaining good brightness characteristics, cf. other techniques.
IT2085276A 1976-03-04 1976-03-04 Paper pulp prepn. from dicotyledonous plants - gives high yields of bast fibres using an oxidising agent during pulping (BR 18.10.77) IT1056871B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
IT2085276A IT1056871B (en) 1976-03-04 1976-03-04 Paper pulp prepn. from dicotyledonous plants - gives high yields of bast fibres using an oxidising agent during pulping (BR 18.10.77)
MX16825477A MX144994A (en) 1976-03-04 1977-03-04 IMPROVEMENTS IN PROCEDURE FOR THE PREPARATION OF PASTES FOR PAPER FROM DICOTILEDONE PLANTS
BR7701349A BR7701349A (en) 1976-03-04 1977-03-04 PROCESS FOR THE PREPARATION OF PAPER PULPS FROM DICHOTYLEDONE PLANTS
AR26676077A AR223635A1 (en) 1976-03-04 1977-03-04 PROCEDURE FOR THE PREPARATION OF PULP FOR PAPER FROM DICOTILEDONE PLANTS
IN321/CAL/77A IN146283B (en) 1976-03-04 1977-03-04
AU23349/77A AU506638B2 (en) 1976-03-04 1977-03-17 Process forthe preparation of pulps from dicotyledoneous plants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2085276A IT1056871B (en) 1976-03-04 1976-03-04 Paper pulp prepn. from dicotyledonous plants - gives high yields of bast fibres using an oxidising agent during pulping (BR 18.10.77)

Publications (1)

Publication Number Publication Date
IT1056871B true IT1056871B (en) 1982-02-20

Family

ID=11173025

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2085276A IT1056871B (en) 1976-03-04 1976-03-04 Paper pulp prepn. from dicotyledonous plants - gives high yields of bast fibres using an oxidising agent during pulping (BR 18.10.77)

Country Status (6)

Country Link
AR (1) AR223635A1 (en)
AU (1) AU506638B2 (en)
BR (1) BR7701349A (en)
IN (1) IN146283B (en)
IT (1) IT1056871B (en)
MX (1) MX144994A (en)

Also Published As

Publication number Publication date
MX144994A (en) 1981-12-10
AU2334977A (en) 1978-09-21
AU506638B2 (en) 1980-01-17
IN146283B (en) 1979-04-14
AR223635A1 (en) 1981-09-15
BR7701349A (en) 1977-10-18

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