GB843881A - An improved process for the preparation of macromolecular polycarbonates - Google Patents

An improved process for the preparation of macromolecular polycarbonates

Info

Publication number
GB843881A
GB843881A GB11599/58A GB1159958A GB843881A GB 843881 A GB843881 A GB 843881A GB 11599/58 A GB11599/58 A GB 11599/58A GB 1159958 A GB1159958 A GB 1159958A GB 843881 A GB843881 A GB 843881A
Authority
GB
United Kingdom
Prior art keywords
aldehyde
polycarbonate
paraformaldehyde
hydroxyphenyl
propane
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
GB11599/58A
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.)
Onderzoekings Instituut Research
Original Assignee
Onderzoekings Instituut Research
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 Onderzoekings Instituut Research filed Critical Onderzoekings Instituut Research
Publication of GB843881A publication Critical patent/GB843881A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
    • C08G64/20—General preparatory processes
    • C08G64/22—General preparatory processes using carbonyl halides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
    • C08G64/20—General preparatory processes
    • C08G64/26—General preparatory processes using halocarbonates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyesters Or Polycarbonates (AREA)

Abstract

In the manufacture of macromalecular polycarbonates by polycondensing an organic dihydroxy compound with phosgene and/or a chlorocarbonate of an organic dihydroxy compound (the free dihydroxy compound and/or the chlorocarbonate containing an aromatic group or groups), cross-links are introduced into the polymer and the polycondensation reaction is accelerated by (a) treating the compound(s) containing the aromatic group(s) with an aldehyde prior to the polycondensation, or (b) adding an aldehyde to the mixture undergoing polycondensation, or (c) treating the polycarbonate resulting from the polycondensation with analdehyde, with or without prior isolation of the polycarbonate. The aldehyde may be formaldehyde, acetaldehyde, propionaldehyde, butyraldehyde, oenanthic aldehyde, palmitic aldehyde, hexadydrobenzaldehyde or benzaldehyde or it may be a substance yielding an aldehyde e.g. hexamethylene tetramine, paraformaldehyde or paracetaldehyde. The aldehyde may be used in combination with a quarternary ammonium compound. A large number of dihydroxy compounds are specified including aromatic dihydroxy compound, (especiallyl di-(monohydroxyaryl) -alkanes) alkylene glycols oxy-and thio-alkylene glycols and cycloaliphatic glycols. In examples (1) Phosgenewas passed into an aqueous solution containing 2 : 2- di (4- hydroxyphenyl) -propane, paraformaldehyde, sodium hydroxide and methylene chloride, then tetra -nbutyl ammonium chloride was added and the resulting dough purified to yield a polycarbonate; (2) A mixture of 2:2- di-(4- hydroxyphenyl)- propane, paraformaldehyde, sodium hydroxide and sodium dithionite was heated, the reaction mixture cooled, methylene chloride added and first phosgene and then tetra- (nbutyl)- ammonium iodide introduced and the polycarbonate precipitated from the methylene chloride with ethanol; (3) A powdered polycarbonate from 2 : 2- di- (4- hydroxyphenyl) propane was heated with paraformaldehyde and aqueous sodium hydroxide and the treated polycarbonate then heated to 254 DEG C.; (4) An aqueous solution of 2 : 2- di - (4- hydroxyphenyl)-propane, paraformaldehyde, sodium hydroxide and triethylbenzylammonium chloride was reacted with a methylene chloride solution of the bischlorocarbonate of 2: 2- di- (4-hydroxyphenyl)- propane. The polycarbonates are useful for the manufacture of threads, fibre, films, foils, and extrusion or injection moulded articles (e.g. rods and tubes). Specification 772,627 is referred to.
GB11599/58A 1957-05-16 1958-04-11 An improved process for the preparation of macromolecular polycarbonates Expired GB843881A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL843881X 1957-05-16

Publications (1)

Publication Number Publication Date
GB843881A true GB843881A (en) 1960-08-10

Family

ID=19845096

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11599/58A Expired GB843881A (en) 1957-05-16 1958-04-11 An improved process for the preparation of macromolecular polycarbonates

Country Status (5)

Country Link
BE (1) BE566669A (en)
DE (1) DE1114636B (en)
FR (1) FR1195767A (en)
GB (1) GB843881A (en)
NL (2) NL94031C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3481901A (en) * 1962-11-30 1969-12-02 Gen Electric Thermoplastic soluble polymer of (1) an ortho-ortho alkylidene bridged novolak and (2) a difunctional halogen material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3481901A (en) * 1962-11-30 1969-12-02 Gen Electric Thermoplastic soluble polymer of (1) an ortho-ortho alkylidene bridged novolak and (2) a difunctional halogen material

Also Published As

Publication number Publication date
NL217343A (en)
FR1195767A (en) 1959-11-19
DE1114636B (en) 1961-10-05
NL94031C (en)
BE566669A (en)

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