GB530374A - Improvements in or relating to the impregnation of fibrous material - Google Patents

Improvements in or relating to the impregnation of fibrous material

Info

Publication number
GB530374A
GB530374A GB1361739A GB1361739A GB530374A GB 530374 A GB530374 A GB 530374A GB 1361739 A GB1361739 A GB 1361739A GB 1361739 A GB1361739 A GB 1361739A GB 530374 A GB530374 A GB 530374A
Authority
GB
United Kingdom
Prior art keywords
rosin
paper
oil
acidic
fibrous material
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
GB1361739A
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.)
Callenders Cable and Construction Co Ltd
Original Assignee
Callenders Cable and Construction Co Ltd
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 Callenders Cable and Construction Co Ltd filed Critical Callenders Cable and Construction Co Ltd
Priority to GB1361739A priority Critical patent/GB530374A/en
Publication of GB530374A publication Critical patent/GB530374A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/65—Acid compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/14—Carboxylic acids; Derivatives thereof
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/60—Waxes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/61—Bitumen
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/64—Alkaline compounds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/20—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances liquids, e.g. oils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Organic Insulating Materials (AREA)

Abstract

530,374. Impregnating-compositions for electric insulation; electric cables. CALLENDER'S CABLE & CONSTRUCTION CO.. Ltd., HILL, H., and BECKINSALE, S. May 6, 1939, No. 13617. [Class 140] [Also in Group XXXVI] Fibrous material, e.g. paper or cloth, is impregnated by treatment with (a) an oleaginous liquid vehicle and diluent, (b) a body consisting of or containing free organic acid and (c) a base which reacts with the acid within the material to form a water-insoluble soap. The oleaginous liquid is miscible with or a solvent for the acidic bodies and free from water, for example, petroleum oils, or mixtures thereof with petroleum products, coal tar products, natural bitumens or synthetic resins. Rosin oil may function both as acidic body and oleaginous liquid vehicle. The basic substance may be calcium hydroxide or calcium, magnesium, zinc or aluminium oxides. The acidic body may be a higher fatty acid, e.g. stearic, palmitic or oleic acids, a natural resin such as rosin, or a destructive distillation product of organic material, e.g. pine tar, stockholm tar, rosin pitch and rosin oil. Coal tars, coal tar pitches and petroleum residual pitches may be added. Either the acidic or the basic component may be incorporated in the fibrous material prior to treatment with the remaining components. For a cable dielectric, paper may be loaded with hydrated lime during manufacture or applied in powder form whilst applying the paper to the conductor. After drying, e.g., at 140‹C. the hot cable core is immersed in a cold mixture of rosin oil and thin transformer oil thinned if desired with naphtha or a chlorinated solvent. For cable sheaths an aqueous suspension of slaked lime is applied and the paper or fabric and quicklime is dusted on the wetted material which is then impregnated with a mixture of blown asphalt, rosin, oleic acid and transformer oil. Alternatively a mixture of rosin oil, lime, calcium hydroxide and transformer oil is used for impregnating immediately after mixing. Embossed paper, e.g. of the kind described in Specification 352,533 may be used as the fibrous material.
GB1361739A 1939-05-06 1939-05-06 Improvements in or relating to the impregnation of fibrous material Expired GB530374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1361739A GB530374A (en) 1939-05-06 1939-05-06 Improvements in or relating to the impregnation of fibrous material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1361739A GB530374A (en) 1939-05-06 1939-05-06 Improvements in or relating to the impregnation of fibrous material

Publications (1)

Publication Number Publication Date
GB530374A true GB530374A (en) 1940-12-11

Family

ID=10026293

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1361739A Expired GB530374A (en) 1939-05-06 1939-05-06 Improvements in or relating to the impregnation of fibrous material

Country Status (1)

Country Link
GB (1) GB530374A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0204417A2 (en) * 1985-05-09 1986-12-10 Minnesota Mining And Manufacturing Company Soap-thickened reenterable gelled encapsulants
EP0207787A2 (en) * 1985-07-01 1987-01-07 Minnesota Mining And Manufacturing Company Industrial gelling agent for hydrophobic organic liquids
US4981608A (en) * 1988-04-22 1991-01-01 Minnesota Mining And Manufacturing Company Industrial gelling agent for hydrophobic organic liquids

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0204417A2 (en) * 1985-05-09 1986-12-10 Minnesota Mining And Manufacturing Company Soap-thickened reenterable gelled encapsulants
EP0204417A3 (en) * 1985-05-09 1988-08-10 Minnesota Mining And Manufacturing Company Soap-thickened reenterable gelled encapsulants
EP0207787A2 (en) * 1985-07-01 1987-01-07 Minnesota Mining And Manufacturing Company Industrial gelling agent for hydrophobic organic liquids
EP0207787A3 (en) * 1985-07-01 1988-08-10 Minnesota Mining And Manufacturing Company Industrial gelling agent for hydrophobic organic liquids
US4981608A (en) * 1988-04-22 1991-01-01 Minnesota Mining And Manufacturing Company Industrial gelling agent for hydrophobic organic liquids

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