BE783945R - Polyamide, polyester and polyacetal dispersions - for prepg micro-porous open-celled cellular structures - Google Patents

Polyamide, polyester and polyacetal dispersions - for prepg micro-porous open-celled cellular structures

Info

Publication number
BE783945R
BE783945R BE783945A BE783945A BE783945R BE 783945 R BE783945 R BE 783945R BE 783945 A BE783945 A BE 783945A BE 783945 A BE783945 A BE 783945A BE 783945 R BE783945 R BE 783945R
Authority
BE
Belgium
Prior art keywords
polyamide
dispersions
polyacetal
polyester
chlorofluorocarbon
Prior art date
Application number
BE783945A
Other languages
French (fr)
Inventor
Francis Edward Jenkins
Original Assignee
Du Pont
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 Du Pont filed Critical Du Pont
Application granted granted Critical
Publication of BE783945R publication Critical patent/BE783945R/en

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
    • C08J9/26—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
    • 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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
    • C08J3/091—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids characterised by the chemical constitution of the organic liquid
    • 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
    • C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
    • C08J2201/05—Elimination by evaporation or heat degradation of a liquid phase
    • C08J2201/0502—Elimination by evaporation or heat degradation of a liquid phase the liquid phase being organic
    • 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
    • C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
    • C08J2201/054—Precipitating the polymer by adding a non-solvent or a different solvent
    • C08J2201/0542—Precipitating the polymer by adding a non-solvent or a different solvent from an organic solvent-based polymer composition
    • C08J2201/0544—Precipitating the polymer by adding a non-solvent or a different solvent from an organic solvent-based polymer composition the non-solvent being aqueous

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Polymer dispersions obtd. by dissolving >=0.3% of a polyamide, polyester or polyacetal in hexafluoroisopropyl alcohol, hexafluoroacetone hydrate, formic acid or mixts. of these (formic acid being used only with a polyamide) and dispersing in the soln. 1-10 times its vol. of a liquid chlorofluorocarbon of b.pt. 10-150 degrees C, m.pt. -40 to +125 degrees C an entropy of fusion of 10 cals/degree K/mole, a plastic flow index of >=0.1 g/10 min. at the reduced temp. of 0.96-0.99 and a water solubility of 2% at below the atmos. b.pt. of the lowest-boiling component of a polymer soln. On cooling the dispersions to the solidification temp. of the lowest melting chlorofluorocarbon present and removing the solvent and the chlorofluorocarbon microporous, cellular, open celled structures are obtd.
BE783945A 1970-12-23 1972-05-25 Polyamide, polyester and polyacetal dispersions - for prepg micro-porous open-celled cellular structures BE783945R (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10117270A 1970-12-23 1970-12-23
US10118170A 1970-12-23 1970-12-23

Publications (1)

Publication Number Publication Date
BE783945R true BE783945R (en) 1972-09-18

Family

ID=26797972

Family Applications (1)

Application Number Title Priority Date Filing Date
BE783945A BE783945R (en) 1970-12-23 1972-05-25 Polyamide, polyester and polyacetal dispersions - for prepg micro-porous open-celled cellular structures

Country Status (1)

Country Link
BE (1) BE783945R (en)

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