NO65496A - - Google Patents

Info

Publication number
NO65496A
NO65496A NO65496DA NO65496A NO 65496 A NO65496 A NO 65496A NO 65496D A NO65496D A NO 65496DA NO 65496 A NO65496 A NO 65496A
Authority
NO
Norway
Prior art keywords
newsprint
bleached lignin
bleached
lignin
hydroxydloxane
Prior art date
Application number
Other languages
Norwegian (no)
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.)
Publication of NO65496A publication Critical patent/NO65496A/no
Priority claimed from DEM3545D external-priority patent/DE934908C/en

Links

Classifications

    • 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
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/78—Preparation processes
    • C08G63/82—Preparation processes characterised by the catalyst used
    • C08G63/87—Non-metals or inter-compounds thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D3/00—Veneer presses; Press plates; Plywood presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D3/00—Veneer presses; Press plates; Plywood presses
    • B27D3/04—Veneer presses; Press plates; Plywood presses with endless arrangement of moving press plates, belts, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G25/00—Conveyors comprising a cyclically-moving, e.g. reciprocating, carrier or impeller which is disengaged from the load during the return part of its movement
    • B65G25/02—Conveyors comprising a cyclically-moving, e.g. reciprocating, carrier or impeller which is disengaged from the load during the return part of its movement the carrier or impeller having different forward and return paths of movement, e.g. walking beam conveyors

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Forests & Forestry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Transmission Devices (AREA)
  • Paper (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

Fremgangsmåte og fremstilt gjenstand blir tllvelebragt for redusering av gulning i blekede lignininneholdende masser eller avispapir ved behandling av bleket lignininneholdene masse eller avispapir med 2,5- dlhydroksydloksan. I en utførelsesform blir kalslumkar- bonat tilsatt for å øke aktiviteten av 2 ,5-dihydroksy- dioksan.Process and article of manufacture are provided for reducing yellowing in bleached lignin-containing pulps or newsprint by treating the bleached lignin-containing pulp or newsprint with 2,5-d-hydroxydloxane. In one embodiment, calcium carbonate is added to increase the activity of 2,5-dihydroxy-dioxane.

NO65496D 1939-01-03 NO65496A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH547792X 1939-01-03
CH862583X 1939-01-03
DEM3545D DE934908C (en) 1939-12-28 1939-12-28 Conveying flat press for woodworking, in particular for gluing wood veneers, strips, boards or the like in their butt or horizontal joints to form lengths of any length
GB1160533X 1955-11-18

Publications (1)

Publication Number Publication Date
NO65496A true NO65496A (en)

Family

ID=27429803

Family Applications (1)

Application Number Title Priority Date Filing Date
NO65496D NO65496A (en) 1939-01-03

Country Status (3)

Country Link
CH (1) CH243788A (en)
GB (1) GB547792A (en)
NO (1) NO65496A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105856346A (en) * 2016-06-06 2016-08-17 晋正正 Panel compositing and pressing device
CN107309984B (en) * 2017-03-02 2019-05-07 徐州春艺阳木业有限公司 A kind of plywood hot-pressing shaping equipment
CN107309981B (en) * 2017-03-02 2019-11-01 宁夏丰通新材料科技有限公司 A kind of glued board heat-shaping device
CN108015606B (en) * 2017-12-27 2023-07-04 天津力佑智能装备有限公司 Automatic workpiece spacing adjusting device
CN118289451B (en) * 2024-05-29 2024-09-03 邳州市蚨瑞金木业有限公司 Conveying device capable of effectively fixing plywood

Also Published As

Publication number Publication date
GB547792A (en) 1942-09-11
CH243788A (en) 1946-07-31

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