SE403893B - Sett och anordning for att befria spanskivor fran formaldehyd genom behandling med ammoniak under bildning av hexametylentetraamin - Google Patents

Sett och anordning for att befria spanskivor fran formaldehyd genom behandling med ammoniak under bildning av hexametylentetraamin

Info

Publication number
SE403893B
SE403893B SE7701189A SE7701189A SE403893B SE 403893 B SE403893 B SE 403893B SE 7701189 A SE7701189 A SE 7701189A SE 7701189 A SE7701189 A SE 7701189A SE 403893 B SE403893 B SE 403893B
Authority
SE
Sweden
Prior art keywords
hexamethylentetraamine
ammoniac
spanish
formaldehyde
discs
Prior art date
Application number
SE7701189A
Other languages
English (en)
Other versions
SE7701189L (sv
SE403893C (sv
Inventor
O Smedberg
Original Assignee
Ry Ab
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 Ry Ab filed Critical Ry Ab
Priority to SE7701189A priority Critical patent/SE403893C/sv
Priority to GB4064/78A priority patent/GB1598852A/en
Priority to FI780328A priority patent/FI69269C/fi
Priority to DE19782804514 priority patent/DE2804514A1/de
Priority to DK048978A priority patent/DK153636C/da
Priority to NO780374A priority patent/NO155482C/no
Priority to FR7803143A priority patent/FR2379374A1/fr
Publication of SE7701189L publication Critical patent/SE7701189L/sv
Publication of SE403893B publication Critical patent/SE403893B/sv
Publication of SE403893C publication Critical patent/SE403893C/sv

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L97/00—Compositions of lignin-containing materials
    • C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N7/00—After-treatment, e.g. reducing swelling or shrinkage, surfacing; Protecting the edges of boards against access of humidity
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G85/00—General processes for preparing compounds provided for in this subclass

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Vehicle Body Suspensions (AREA)
  • Forklifts And Lifting Vehicles (AREA)
SE7701189A 1977-02-03 1977-02-03 Sett att befria spanskivor fran formaldehyd genom behandling med ammoniak uder bildning av hexametylentetraamin SE403893C (sv)

Priority Applications (7)

Application Number Priority Date Filing Date Title
SE7701189A SE403893C (sv) 1977-02-03 1977-02-03 Sett att befria spanskivor fran formaldehyd genom behandling med ammoniak uder bildning av hexametylentetraamin
GB4064/78A GB1598852A (en) 1977-02-03 1978-02-01 Particle board free of formaldehyde
FI780328A FI69269C (fi) 1977-02-03 1978-02-01 Formaldehydfri spaonskiva
DE19782804514 DE2804514A1 (de) 1977-02-03 1978-02-02 Formaldehydfreie spanplatte
DK048978A DK153636C (da) 1977-02-03 1978-02-02 Fremgangsmaade til at befri spaanplader for formaldehyd
NO780374A NO155482C (no) 1977-02-03 1978-02-02 Fremgangsmaate for aa befri sponplater for formaldehyd, samt anordning for utfoerelse av fremgangsmaaten.
FR7803143A FR2379374A1 (fr) 1977-02-03 1978-02-03 Panneau de particules exempt de formaldehyde

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7701189A SE403893C (sv) 1977-02-03 1977-02-03 Sett att befria spanskivor fran formaldehyd genom behandling med ammoniak uder bildning av hexametylentetraamin

Publications (3)

Publication Number Publication Date
SE7701189L SE7701189L (sv) 1978-08-04
SE403893B true SE403893B (sv) 1978-09-11
SE403893C SE403893C (sv) 1984-10-29

Family

ID=20330357

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7701189A SE403893C (sv) 1977-02-03 1977-02-03 Sett att befria spanskivor fran formaldehyd genom behandling med ammoniak uder bildning av hexametylentetraamin

Country Status (7)

Country Link
DE (1) DE2804514A1 (sv)
DK (1) DK153636C (sv)
FI (1) FI69269C (sv)
FR (1) FR2379374A1 (sv)
GB (1) GB1598852A (sv)
NO (1) NO155482C (sv)
SE (1) SE403893C (sv)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2829021C2 (de) * 1978-07-01 1980-08-28 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V., 8000 Muenchen Verfahren zur Verminderung der Formaldehydabgabe von Spanplatten
SE424835B (sv) * 1978-07-07 1982-08-16 Ry Ab Maskin for att behandla lignocellulosahaltiga skivmaterial med gasformiga emnen
EP0027487A1 (fr) * 1979-10-10 1981-04-29 Jean-Baptiste Verbestel Procédé et dispositif de traitement de matériaux lignocellulosiques liés à l'aide de résines à base de formaldéhyde
US4478891A (en) * 1982-09-30 1984-10-23 Ab Statens Skogsindustrier Method of reducing the emission of formaldehyde from particle board bound with carbamide resin
DE4327774A1 (de) * 1993-08-18 1995-02-23 Fraunhofer Ges Forschung Verfahren zur Herstellung von mitteldichten Holzfaserplatten (MDF)
FI971899A (sv) 1997-05-02 1998-11-03 Sunds Defibrator Panelhandling Förfarande och apparatur för behandling av skivformigt material med ga sformigt ämne
DE102007054123B4 (de) 2006-11-15 2012-03-15 Edmone Roffael Verfahren zur Herstellung von Holzfaserplatten mit verringerter Formaldehydemission, hoher Feuchtebeständigkeit und Hydrolyseresistenz der Verleimung
DE102008023007A1 (de) 2007-11-11 2010-06-02 Roffael, Edmone, Prof. Dr.-Ing. Verfahren zur Herstellung von Holzfaserplatten mit verringerter Formaldehydemission, hoher Feuchtebeständigkeit und Hydrolyseresistenz der Verleimung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB462741A (en) * 1935-04-30 1937-03-15 Josef Berghoff Improvements in moulded products and method of making the same
SE327622B (sv) * 1964-11-30 1970-08-24 S Lundgren
US3362080A (en) * 1966-02-14 1968-01-09 Beloit Corp Through drying of paper
BE712436A (sv) * 1968-03-19 1968-07-31

Also Published As

Publication number Publication date
DK48978A (da) 1978-08-04
DK153636C (da) 1988-12-19
SE7701189L (sv) 1978-08-04
SE403893C (sv) 1984-10-29
FR2379374A1 (fr) 1978-09-01
NO780374L (no) 1978-08-04
NO155482C (no) 1987-04-08
FI780328A (fi) 1978-08-04
DE2804514A1 (de) 1978-08-10
DK153636B (da) 1988-08-08
DE2804514C2 (sv) 1987-05-21
FI69269C (fi) 1986-01-10
NO155482B (no) 1986-12-29
FR2379374B1 (sv) 1983-05-27
FI69269B (fi) 1985-09-30
GB1598852A (en) 1981-09-23

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