GB605519A - Improvements in or relating to the production of cellular materials - Google Patents

Improvements in or relating to the production of cellular materials

Info

Publication number
GB605519A
GB605519A GB3500545A GB3500545A GB605519A GB 605519 A GB605519 A GB 605519A GB 3500545 A GB3500545 A GB 3500545A GB 3500545 A GB3500545 A GB 3500545A GB 605519 A GB605519 A GB 605519A
Authority
GB
United Kingdom
Prior art keywords
paste
electrodes
glass
container
polyvinyl chloride
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
GB3500545A
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.)
SIDNEY DOUGLAS EAGLETON
Expanded Rubber Co Ltd
Original Assignee
SIDNEY DOUGLAS EAGLETON
Expanded Rubber 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 SIDNEY DOUGLAS EAGLETON, Expanded Rubber Co Ltd filed Critical SIDNEY DOUGLAS EAGLETON
Priority to GB3500545A priority Critical patent/GB605519A/en
Publication of GB605519A publication Critical patent/GB605519A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/30—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2327/06—Homopolymers or copolymers of vinyl chloride

Abstract

<PICT:0605519/IV(a)/1> Expanded, cellular polyvinyl chloride is produced by dispersing air or an inert gas into a paste of polyvinyl chloride powder and a non-solvent plasticiser, submitting the paste to reduced pressure and gelatinising the thus expanded material by heating in an alternating electric field. Air may be dispersed in the paste simultaneously with its preparation by grinding, for example, in an edge runner mill. Specified plasticisers are di-2-ethyl hexyl phthalate and tricresyl phosphate. Basic white lead carbonate may be included in the mixture. Apparatus for carrying out the invention (Fig. 1) consists of an insulated glass cell 2 containing the paste, placed between two electrodes 5 in a glass vessel 4 capable of evacuation. Thin sheets of mica 6 are so placed as to avoid discharge between the electrodes. In a modification, two opposing walls made of brass act as electrodes, the remainder of the cell being of glass. Heat losses from the walls which result in cooling of the outer layers may be overcome by completing the gellation in an oven, or by heating the container, or by using a container which is an imperfect dielectric. Specification 500,298 is referred to.
GB3500545A 1946-01-27 1946-01-27 Improvements in or relating to the production of cellular materials Expired GB605519A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3500545A GB605519A (en) 1946-01-27 1946-01-27 Improvements in or relating to the production of cellular materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3500545A GB605519A (en) 1946-01-27 1946-01-27 Improvements in or relating to the production of cellular materials

Publications (1)

Publication Number Publication Date
GB605519A true GB605519A (en) 1948-07-26

Family

ID=10372670

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3500545A Expired GB605519A (en) 1946-01-27 1946-01-27 Improvements in or relating to the production of cellular materials

Country Status (1)

Country Link
GB (1) GB605519A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695427A (en) * 1952-06-25 1954-11-30 Dow Chemical Co Method of making cellular products from vinylidene chloride copolymers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695427A (en) * 1952-06-25 1954-11-30 Dow Chemical Co Method of making cellular products from vinylidene chloride copolymers

Similar Documents

Publication Publication Date Title
GB605519A (en) Improvements in or relating to the production of cellular materials
GB577474A (en) Improvements relating to apparatus for heating insulating material by subjecting it to a high frequency field of electric force
GB629371A (en) Improvements in or relating to dielectric heating
GB857108A (en) Improvements in or relating to vitreous seals
GB949401A (en) Improvements in or relating to micaceous insulating materials
AU137212B2 (en) Improvements in or relating tothe manufacture of glass sealed electric terminals
AU122552B2 (en) Improvements in gas-tight seals wherein electric conductors passthrough quartz or like vitreous materials
AU137745B2 (en) Improved means for feeding high frequency electric currents to the electrodes of electrdes of heating apparatus
AU127854B2 (en) Improvements in arrangements for hermetically sealing electrical apparatus in cases
GB190603905A (en) Improvement in the Production of Ozone.
AU190746A (en) Improvements in arrangements for hermetically sealing electrical apparatus in cases
GB757221A (en) Improvements in and relating to electric heating panels
AU145209B2 (en) Improvements in or relating to electrode centering arrangements for electric discharge tubes
CA451494A (en) Heating materials by high frequency electric currents
GB586903A (en) Improvements in the manufacture of ceramic bodies
AU116906B2 (en) Method of increasing the electric strength of gases and gaseous insulating dielectrics and the utilization of the same in electrical apparatus
AU146740B2 (en) Electric discharge tubes comprising luminescent material and method of preparing such material
AU2299048A (en) Improvements in or relating to electrode centering arrangements for electric discharge tubes
GB631811A (en) Improvements in or relating to electron discharge tubes and other devices having evacuated envelopes and to vacuum-tight joints therefor
GB731752A (en) Improvements in and relating to panels for thermal insulation
CA436085A (en) Gas mixture separating process and apparatus
AU134462B2 (en) Improvements in or relating tothe heating of dielectric material
AU127436B2 (en) Improvements in or relating to sealing electric conductors through glass envelope and to electric conductors for such purpose
AU144905B2 (en) Improvements in or relating tothe methods forthe manufacture of oxide cathodes for electric discharge tubes and oxide cathodes so manufactured
GB553460A (en) Improvements in the sealing of electrical conductors through vitreous walls