GB949581A - Expanded resinous materials - Google Patents

Expanded resinous materials

Info

Publication number
GB949581A
GB949581A GB538261A GB538261A GB949581A GB 949581 A GB949581 A GB 949581A GB 538261 A GB538261 A GB 538261A GB 538261 A GB538261 A GB 538261A GB 949581 A GB949581 A GB 949581A
Authority
GB
United Kingdom
Prior art keywords
nylon
mixture
blowing agent
powdered
heated
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
GB538261A
Inventor
Donald John Cram
John Gilmour Hawkins
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.)
Fisons Industrial Chemicals Ltd
Original Assignee
Whiffen and Sons 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 Whiffen and Sons Ltd filed Critical Whiffen and Sons Ltd
Priority to GB538261A priority Critical patent/GB949581A/en
Publication of GB949581A publication Critical patent/GB949581A/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
    • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C08J2377/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof

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)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

A process for making expanded nylon-11 comprises forming a mixture comprising powdered nylon-11 and a powdered blowing agent and heating the mixture to a temperature at which the blowing agent decomposes. The heating may be effected in a mould, in which case the decomposition temperature of the blowing agent is selected to have a value of 10-50 DEG C. above the melting point of the nylon-11. The process may also take the form of coating a metal object by heating it to a temperature above the decomposition temperature of the blowing agent and dipping it into a mixture of powdered nylon-11 and powdered blowing agent. In examples (1) a mixture of nylon-11 (m.p. 186 DEG C.) and azodicarbonamide is heated at 200 to 210 DEG C. to give a foam suitable for oil-impregnated bushes or bearings; (2) a piece of aluminium heated to 450 DEG C. is dipped into a mixture of nylon-11 and trihydrazinotriazine. A coating of blown nylon forms on the surface.ALSO:A process for coating metal objects with expanded nylon-11 comprises dipping the heated object into a mixture comprising powdered nylon-11 and powdered blowing agent, the metal having been heated to a temperature at which the blowing agent decomposes and in excess of the melting point of nylon-11. In Example (2) a piece of aluminium heated to 450 DEG C. is dipped into a mixture of nylon-11 and trihydrazinotriazine. A coating of blown nylon-11 forms on the surface. The mixture may be formed into a fluidized bed prior to dipping.
GB538261A 1961-02-14 1961-02-14 Expanded resinous materials Expired GB949581A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB538261A GB949581A (en) 1961-02-14 1961-02-14 Expanded resinous materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB538261A GB949581A (en) 1961-02-14 1961-02-14 Expanded resinous materials

Publications (1)

Publication Number Publication Date
GB949581A true GB949581A (en) 1964-02-12

Family

ID=9795096

Family Applications (1)

Application Number Title Priority Date Filing Date
GB538261A Expired GB949581A (en) 1961-02-14 1961-02-14 Expanded resinous materials

Country Status (1)

Country Link
GB (1) GB949581A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148742A (en) * 1983-10-27 1985-06-05 Rogers Corp Matrix coating system and method of manufacture thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148742A (en) * 1983-10-27 1985-06-05 Rogers Corp Matrix coating system and method of manufacture thereof

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