GB499559A - Improvements in manufacture of cellular-rubber or rubber-like material - Google Patents

Improvements in manufacture of cellular-rubber or rubber-like material

Info

Publication number
GB499559A
GB499559A GB11539/38A GB1153938A GB499559A GB 499559 A GB499559 A GB 499559A GB 11539/38 A GB11539/38 A GB 11539/38A GB 1153938 A GB1153938 A GB 1153938A GB 499559 A GB499559 A GB 499559A
Authority
GB
United Kingdom
Prior art keywords
inflating gas
mass
gas
rubber
mix
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
GB11539/38A
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.)
US RUBBER PROD Inc
Uniroyal Inc
Original Assignee
US RUBBER PROD Inc
United States Rubber Co
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 US RUBBER PROD Inc, United States Rubber Co filed Critical US RUBBER PROD Inc
Publication of GB499559A publication Critical patent/GB499559A/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
    • C08J9/06—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
    • 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
    • C08J9/10—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 nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • 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)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

Cellular rubber or artificial rubber in which substantially all the cells are closed is made by mixing a vulcanizable rubber mix with a material capable of generating an inflating gas under the influence of heat, heating the mix to develop the inflating gas while allowing the mass to expand against an exteriorly imposed gaseous counter pressure sufficient to restrain the inflating gas from rupturing the cells, reducing the gaseous counterpressure to permit further expansion of the mass, and then completing the vulcanization of the mass while it is confined under conditions preventing any substantial diffusion from the mass of the inflating gas for example in a closed mould. The inflating gas may be nitrogen which may be generated by the interaction of sodium nitrite and ammonium acetate, carbon dioxide, carbon monoxide, methane, hydrogen sulphide, nitrous oxide, or mixtures thereof. The same gas is preferably used both for inflation and counter pressure. Supplementary gas-forming chemicals which yield additional inflating gas at the temperature of the final vulcanization may be included in the mix.
GB11539/38A 1937-04-17 1938-04-14 Improvements in manufacture of cellular-rubber or rubber-like material Expired GB499559A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US499559XA 1937-04-17 1937-04-17

Publications (1)

Publication Number Publication Date
GB499559A true GB499559A (en) 1939-01-25

Family

ID=21962655

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11539/38A Expired GB499559A (en) 1937-04-17 1938-04-14 Improvements in manufacture of cellular-rubber or rubber-like material

Country Status (1)

Country Link
GB (1) GB499559A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4037403A1 (en) * 1990-07-19 1992-01-23 Herbert Prignitz METHOD FOR PRODUCING FOAM PLASTICS, IN PARTICULAR POLYURETHANE FOAM PLASTICS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4037403A1 (en) * 1990-07-19 1992-01-23 Herbert Prignitz METHOD FOR PRODUCING FOAM PLASTICS, IN PARTICULAR POLYURETHANE FOAM PLASTICS

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