GB358967A - Improvements in or relating to the manufacture and use of expanded rubber material - Google Patents

Improvements in or relating to the manufacture and use of expanded rubber material

Info

Publication number
GB358967A
GB358967A GB1480530A GB1480530A GB358967A GB 358967 A GB358967 A GB 358967A GB 1480530 A GB1480530 A GB 1480530A GB 1480530 A GB1480530 A GB 1480530A GB 358967 A GB358967 A GB 358967A
Authority
GB
United Kingdom
Prior art keywords
rubber
stage
per cent
pressure
articles
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
GB1480530A
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.)
Expanded Rubber Co Ltd
Original Assignee
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
Priority to US21245D priority Critical patent/USRE21245E/en
Application filed by Expanded Rubber Co Ltd filed Critical Expanded Rubber Co Ltd
Priority to US510332A priority patent/US1905269A/en
Publication of GB358967A publication Critical patent/GB358967A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
    • 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
    • C08J9/06—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 chemical blowing agent
    • C08J9/08—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 chemical blowing agent developing carbon dioxide
    • 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
    • C08J9/14—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 organic
    • C08J9/141—Hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers
    • 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
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/02—Foams characterised by the foaming process characterised by mechanical pre- or post-treatments
    • C08J2201/032—Impregnation of a formed object with a gas
    • 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
    • C08J2321/00—Characterised by the use of unspecified rubbers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

In the manufacture of expanded rubber by heating dough under high gas pressure, the expansion and vulcanization is effected in stages. In an example, for producing a rigid rubber froth, a mix consisting of 60 per cent rubber, 25 per cent sulphur, 6 per cent hydrocarbon, 3 per cent magnesia, 1 per cent ceresine wax, and 5 per cent colouring matter, is placed in a container in an autoclave, and heated to a steam pressure of 8 lbs., which is reached in 30 min. Inert gas at a pressure of about 180 atmospheres is admitted to the autoclave, and the pressure and temperature are maintained for 400 min. The apparatus is allowed to cool for 60 min., the pressure is released, the container is removed and opened, whereupon the rubber expands to about six times its original volume. This rubber is placed in a second mould and heated up to 85 lbs. steam pressure in 15 min., and maintained thereat for 45 min. The rubber expands to about 13 1/2 times its original volume, and vulcanization is complete. The product of the first stage may be formed into strips from which articles may be built and welded together in the second stage, when the surfaces of the strips unite and form solid diaphragms which stiffen the article. Soft rubber articles can be made similarly. Long strips may be made by rolling up a strip of dough on a calico &c. backing treated to prevent sticking, binding the roll with canvas or thin metal, carrying out the first stage, unwinding to allow the rubber to expand, rolling up again and carrying out the second stage. An outer covering of linen, canvas, metal, or the like, may be attached at the second stage, and articles having a hard core and soft exterior may be made by uniting suitable first stage products in the second stage. The material is suitable for the manufacture of buoyant blocks for lifeboats &c., mats, heat and sound insulators.
GB1480530A 1930-05-14 1930-05-14 Improvements in or relating to the manufacture and use of expanded rubber material Expired GB358967A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US21245D USRE21245E (en) 1930-05-14 Process of producing expanded
US510332A US1905269A (en) 1930-05-14 1931-01-21 Process of producing expanded rubber material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB917837A GB495021A (en) 1937-03-31 1937-03-31 Improvements in or relating to the production of gas expanded rubber

Publications (1)

Publication Number Publication Date
GB358967A true GB358967A (en) 1931-10-14

Family

ID=9866908

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1480530A Expired GB358967A (en) 1930-05-14 1930-05-14 Improvements in or relating to the manufacture and use of expanded rubber material
GB917837A Expired GB495021A (en) 1930-05-14 1937-03-31 Improvements in or relating to the production of gas expanded rubber

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB917837A Expired GB495021A (en) 1930-05-14 1937-03-31 Improvements in or relating to the production of gas expanded rubber

Country Status (1)

Country Link
GB (2) GB358967A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466271A (en) * 1941-12-18 1949-04-05 Rubatex Products Inc Method of making electric power transmission cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466271A (en) * 1941-12-18 1949-04-05 Rubatex Products Inc Method of making electric power transmission cable

Also Published As

Publication number Publication date
GB495021A (en) 1938-10-31

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