GB925068A - Production of polycarbonates - Google Patents

Production of polycarbonates

Info

Publication number
GB925068A
GB925068A GB25946/59A GB2594659A GB925068A GB 925068 A GB925068 A GB 925068A GB 25946/59 A GB25946/59 A GB 25946/59A GB 2594659 A GB2594659 A GB 2594659A GB 925068 A GB925068 A GB 925068A
Authority
GB
United Kingdom
Prior art keywords
dihydric
molecular weight
bis
glycols
effected
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
GB25946/59A
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.)
PPG Industries Inc
Original Assignee
Pittsburgh Plate Glass 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 Pittsburgh Plate Glass Co filed Critical Pittsburgh Plate Glass Co
Publication of GB925068A publication Critical patent/GB925068A/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
    • C08G64/04—Aromatic polycarbonates
    • C08G64/06—Aromatic polycarbonates not containing aliphatic unsaturation
    • C08G64/14—Aromatic polycarbonates not containing aliphatic unsaturation containing a chain-terminating or -crosslinking agent
    • 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
    • C08G64/04—Aromatic polycarbonates
    • C08G64/06—Aromatic polycarbonates not containing aliphatic unsaturation
    • C08G64/08—Aromatic polycarbonates not containing aliphatic unsaturation containing atoms other than carbon, hydrogen or oxygen
    • 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

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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

High molecular weight linear copolycarbonates are made by reacting phosgene with a lower molecular weight copolycarbonate comprising alternating residues of a dihydric phenol and a dihydric alcohol and having reactive phenolic hydroxyl groups. The lower molecular weight polycarbonate is made by reacting a dihydric phenol with a bis-haloformate of a dihydric alcohol. Both reactions are effected in the presence of an inorganic or organic hydrogen halide acceptor and also, possibly, water and organic solvents for the polycarbonate produced by the reaction. Specified dihydric phenols are bis-phenols, and dihydroxy benzenes, naphthalenes and diphenyls. Specified dihydric alcohols are straight and branched chain alkanediols, oxy- and thioalkylene glycols, unsaturated aliphatic glycols, saturated cyclopentane and cyclohexane diols, xylylyene glycols, styryl glycol, 3:31-dihydroxydicyclopentyl ether, hydrogenated bisphenol-A and 1:2-dihydroxy-4-vinylcyclohexene. In the example, ethylene glycol bis-chloroformate was reacted with bisphenol-A and the product reacted with phosgene, both reactions being effected in the presence of aqueous sodium hydroxide and methylene chloride. Reference has been directed by the Comptroller to Specifications 808,485 and 808,487.
GB25946/59A 1958-08-01 1959-07-29 Production of polycarbonates Expired GB925068A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75242358A 1958-08-01 1958-08-01

Publications (1)

Publication Number Publication Date
GB925068A true GB925068A (en) 1963-05-01

Family

ID=25026272

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25946/59A Expired GB925068A (en) 1958-08-01 1959-07-29 Production of polycarbonates

Country Status (1)

Country Link
GB (1) GB925068A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2308914A1 (en) * 2008-08-01 2011-04-13 Ube Industries, Ltd. Polycarbonate diol and polycarbonate diol copolymer
JP2011157487A (en) * 2010-02-01 2011-08-18 Ube Industries Ltd Polyurethane resin and polyurethane resin composition

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2308914A1 (en) * 2008-08-01 2011-04-13 Ube Industries, Ltd. Polycarbonate diol and polycarbonate diol copolymer
CN102112522A (en) * 2008-08-01 2011-06-29 宇部兴产株式会社 Polycarbonate diol and polycarbonate diol copolymer
EP2308914A4 (en) * 2008-08-01 2012-10-24 Ube Industries Polycarbonate diol and polycarbonate diol copolymer
JP2011157487A (en) * 2010-02-01 2011-08-18 Ube Industries Ltd Polyurethane resin and polyurethane resin composition

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