GB1072245A - Improvements relating to microporous plastic materials - Google Patents

Improvements relating to microporous plastic materials

Info

Publication number
GB1072245A
GB1072245A GB30829/64A GB3082964A GB1072245A GB 1072245 A GB1072245 A GB 1072245A GB 30829/64 A GB30829/64 A GB 30829/64A GB 3082964 A GB3082964 A GB 3082964A GB 1072245 A GB1072245 A GB 1072245A
Authority
GB
United Kingdom
Prior art keywords
plasticizer
ethylene oxide
mixture
per molecule
single phase
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
GB30829/64A
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.)
Esb-Reeves Corp
Original Assignee
Esb-Reeves Corp
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 Esb-Reeves Corp filed Critical Esb-Reeves Corp
Publication of GB1072245A publication Critical patent/GB1072245A/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
    • C08J9/26—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

Landscapes

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

Abstract

A method of making a microporous plastic material comprises forming a substantially single phase mixture by intimately mixing a plastic material, the working material, with a plasticizer, shaping the mixture, removing at least a portion of the plasticizer by treating the mixture with a leaching agent, in which the plasticizer is at least partially soluble and the working material is substantially insoluble, thus forming a microporous body. Heat may be necessary to form the substantially single phase mixture. Working materials specified are polymers and copolymers of vinyl acetate, vinyl butyrate, styrene, vinyl chloride and methyl methacrylate; and cellulose acetate, cellulose acetate butyrate, cellulose nitrate and ethyl cellulose. Plasticizers specified are compounds containing at least one ethylene oxide group per molecule; a condensation product of ethylene oxide; a compound containing at least one ether group per molecule; a compound containing at least one ester group per molecule; a carboxylic acid ester, an ester of a dicarboxylic acid containing at least one ethylene oxide group. The leaching agent is water. A permanent plasticizer such as dioctyl phthalate, dioctyl azelate and diotyl sebacate may be included in the single phase mixture. In an example, P.V.C. is dissolved in bis(2-(2-methoxyethoxy)ethyl) adipate and, after shaping, treated with water.
GB30829/64A 1963-07-26 1964-08-04 Improvements relating to microporous plastic materials Expired GB1072245A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29794263A 1963-07-26 1963-07-26

Publications (1)

Publication Number Publication Date
GB1072245A true GB1072245A (en) 1967-06-14

Family

ID=63798687

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30829/64A Expired GB1072245A (en) 1963-07-26 1964-08-04 Improvements relating to microporous plastic materials

Country Status (4)

Country Link
DE (1) DE1504213A1 (en)
FR (1) FR1425284A (en)
GB (1) GB1072245A (en)
NL (1) NL6408338A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK171108B1 (en) * 1976-08-30 1996-06-10 Akzo Nv Microporous polymer body and its preparation and use
DE2833623A1 (en) * 1978-07-31 1980-03-13 Akzo Gmbh Polypropylene membranes with porous surface - are used for filters, microfilters, membrane supports and as oxygenation agents
US4434116A (en) * 1981-06-26 1984-02-28 Diamond Shamrock Corporation Method for making a porous fluorinated polymer structure
DE3309855C2 (en) * 1983-03-18 1987-03-12 Ferdinand Dr. 8014 Neubiberg Quella Process for producing open-cell plastic foam

Also Published As

Publication number Publication date
NL6408338A (en) 1965-01-27
FR1425284A (en) 1966-01-24
DE1504213A1 (en) 1969-09-25

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