GB425389A - Improved process of impregnating layers of fibrous material with synthetic artificial resin - Google Patents

Improved process of impregnating layers of fibrous material with synthetic artificial resin

Info

Publication number
GB425389A
GB425389A GB1447/34A GB144734A GB425389A GB 425389 A GB425389 A GB 425389A GB 1447/34 A GB1447/34 A GB 1447/34A GB 144734 A GB144734 A GB 144734A GB 425389 A GB425389 A GB 425389A
Authority
GB
United Kingdom
Prior art keywords
paper
drying
heating
condensation
substances
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB1447/34A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB425389A publication Critical patent/GB425389A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/48Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
    • H01B3/485Other fibrous materials fabric
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20Macromolecular organic compounds
    • D21H17/33Synthetic macromolecular compounds
    • D21H17/46Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/47Condensation polymers of aldehydes or ketones
    • D21H17/48Condensation polymers of aldehydes or ketones with phenols
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21JFIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J1/00Fibreboard
    • D21J1/16Special fibreboard

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

A sheet of fibrous material such as paper or fabric of considerable length is impregnated with a preferably aqueous solution of the initial elementary substances of a synthetic resin, whereupon, prior to drying, the sheet is wound into a roll in order to avoid vaporization of volatile initial substances during the condensation which is effected to such an extent that in the subsequent drying and final heating, vaporizable initial substances are no longer present. Condensation may be effected at room temperature or by heating. suitable synthetic resins are condensation products of formaldehyde or furfural with phenol, cresol, urea or thiourea. Examples describe impregnating paper with a solution of cresol, formalin and hexamethylenetetramine, winding on a cylinder to form a roll, heating at 75 DEG C. for 24 hours to effect the condensation and drying by leading the length of paper through a heated chamber or in vacuo at a low p temperature. Tubes may be made by winding the dried intermediate product on a core and heating, if desired, under pressure. Compound sheets may be formed by compressing a plurality of layers at high temperature and pressure. Moulded articles may be made by dividing the dried intermediate product into small pieces and forming by heat and pressure. The Specification as open to inspection under Sect. 91 describes also drying an impregnated breadth of paper by leading it through a closed furnace which fits the paper so exactly that no volatile substances escape. This subject-matter does not appear in the Specification as accepted.
GB1447/34A 1933-01-23 1934-01-15 Improved process of impregnating layers of fibrous material with synthetic artificial resin Expired GB425389A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE425389X 1933-01-23

Publications (1)

Publication Number Publication Date
GB425389A true GB425389A (en) 1935-03-13

Family

ID=6477044

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1447/34A Expired GB425389A (en) 1933-01-23 1934-01-15 Improved process of impregnating layers of fibrous material with synthetic artificial resin

Country Status (1)

Country Link
GB (1) GB425389A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2465299A (en) * 1945-01-01 1949-03-22 Westinghouse Electric Corp Laminated product embodying a low odor phenol-formaldehyde resin
CN111823650A (en) * 2019-04-15 2020-10-27 无锡市百雄流体科技有限公司 Forming process for compounding plant fiber paper into silencing pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2465299A (en) * 1945-01-01 1949-03-22 Westinghouse Electric Corp Laminated product embodying a low odor phenol-formaldehyde resin
CN111823650A (en) * 2019-04-15 2020-10-27 无锡市百雄流体科技有限公司 Forming process for compounding plant fiber paper into silencing pipe

Similar Documents

Publication Publication Date Title
US2590850A (en) Method of treating sheet material coated with gelatine
GB425389A (en) Improved process of impregnating layers of fibrous material with synthetic artificial resin
US1987694A (en) Method of producing laminated material
US1595236A (en) Method of treating material in a vacuum and apparatus
GB452924A (en) Improvements in and relating to the manufacture of artificial threads, filaments and the like
GB458877A (en) Improvements in the treatment of fabrics for the production of non-crease effects
DE624806C (en) Process for the production of hollow bodies from pulp
US2135349A (en) Impregnation of materials
US1598980A (en) Method of and apparatus for drying moving material
DE880542C (en) Process for the production of molded articles from fiber suspensions
US1728567A (en) Belting of woven fibrous material
US2495234A (en) Method of treating cellulosic materials with trimethylolphenol
SU31584A1 (en) The method of manufacturing cement, plaster and cement-plaster models and forms for the manufacture of
US1770663A (en) Thermal and electrical insulator and process of manufacture thereof
US1836174A (en) Brake covering and the like and process of manufacturing the same
DE967962C (en) Process for the production of pressed laminated bodies
US2042825A (en) Process of coloring wood veneers and the like
US1709266A (en) Rubber-spreading machine
SU60882A1 (en) The method of preparation of green tea
SU46978A1 (en) Method of making cellulose acetate sheet material
US532468A (en) Arthur d
DE583837C (en) Method for drying rayon bobbins
GB458238A (en) Improvements in or relating to the production of artificial sausage casings, more particularly round sausage casings
GB428904A (en) Process for the manufacture of artificial yarns
SU56414A1 (en) The method of preparation of layered plastics