GB1526885A - Process for the preparation of polycarbonates containing aliphatically bound hydroxyl end groups - Google Patents

Process for the preparation of polycarbonates containing aliphatically bound hydroxyl end groups

Info

Publication number
GB1526885A
GB1526885A GB2161476A GB2161476A GB1526885A GB 1526885 A GB1526885 A GB 1526885A GB 2161476 A GB2161476 A GB 2161476A GB 2161476 A GB2161476 A GB 2161476A GB 1526885 A GB1526885 A GB 1526885A
Authority
GB
United Kingdom
Prior art keywords
ethylene glycol
polycarbonates
preparation
aliphatically bound
end groups
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
GB2161476A
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of GB1526885A publication Critical patent/GB1526885A/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
    • C08G64/16—Aliphatic-aromatic or araliphatic polycarbonates
    • C08G64/1608—Aliphatic-aromatic or araliphatic polycarbonates saturated
    • 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
    • C08G64/02—Aliphatic polycarbonates
    • C08G64/0208—Aliphatic polycarbonates saturated
    • 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
    • C08G64/30—General preparatory processes using carbonates

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)
  • Polyurethanes Or Polyureas (AREA)

Abstract

1526885 Polycarbonates; polyurethanes BAYER AG 25 May 1976 [27 May 1975] 21614/76 Heading C3R A polycarbonate containing aliphaticallybound OH end-groups is made by transesterifying a dihydroxyl compound (D) having aliphatically bound OH groups with ethylene glycol carbonate (C), ethylene glycol being simultaneously removed from the reaction mixture by fractional distillation, as an azeotropic mixture with an inert solvent (S) in which ethylene glycol is insoluble. Suitable solvents are listed 10-30% mol excess of (C) may be used. A transesterification catalyst may be present, many being listed. High MW polycarbonates are obtained if, after removal of (S) and any unreacted (C), some (F) still remains to be distilled off under transesterification conditions. A polyurethane may be formed by reacting a polyisocyanate with the polycarbonate.
GB2161476A 1975-05-27 1976-05-25 Process for the preparation of polycarbonates containing aliphatically bound hydroxyl end groups Expired GB1526885A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752523352 DE2523352A1 (en) 1975-05-27 1975-05-27 METHOD FOR PRODUCING ALIPHATIC POLYCARBONATES

Publications (1)

Publication Number Publication Date
GB1526885A true GB1526885A (en) 1978-10-04

Family

ID=5947486

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2161476A Expired GB1526885A (en) 1975-05-27 1976-05-25 Process for the preparation of polycarbonates containing aliphatically bound hydroxyl end groups

Country Status (9)

Country Link
JP (1) JPS51144492A (en)
AT (1) AT355310B (en)
BE (1) BE842196A (en)
BR (1) BR7603333A (en)
DE (1) DE2523352A1 (en)
ES (1) ES448262A1 (en)
FR (1) FR2312521A1 (en)
GB (1) GB1526885A (en)
IT (1) IT1061310B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3298065A4 (en) * 2015-05-21 2019-02-27 Basf Se Preparation of hyperbranched polycarbonate polyols and their use

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131731A (en) * 1976-11-08 1978-12-26 Beatrice Foods Company Process for preparing polycarbonates
JPS5556124A (en) * 1978-10-19 1980-04-24 Beatrice Foods Co Manufacture of polycarbonate
JPS5564535A (en) * 1978-11-10 1980-05-15 Nisso Yuka Kogyo Kk Separation of mixture of ethylene glycol and ethylene carbonate
WO1987000185A1 (en) * 1985-07-01 1987-01-15 The Dow Chemical Company A process for increasing the molecular weight of poly(alkylene carbonate) polyols
JP2623550B2 (en) * 1987-01-27 1997-06-25 東亞合成株式会社 Method for producing polycarbonate diol
JPS6466236A (en) * 1987-09-08 1989-03-13 Mitsubishi Gas Chemical Co Aliphatic polycarbonate and production thereof
JP2554775B2 (en) * 1990-11-29 1996-11-13 出光石油化学株式会社 Method for producing polycarbonate
WO1995027749A1 (en) * 1994-04-08 1995-10-19 Asahi Kasei Kogyo Kabushiki Kaisha Process for producing hydroxyl-terminated polycarbonate
EP0781792B1 (en) 1995-12-28 2002-02-06 Asahi Glass Company Ltd. Cross-linked polyurethane resin sheet and laminated product employing it
WO2013076099A1 (en) 2011-11-24 2013-05-30 Bayer Intellectual Property Gmbh Production and use of high-molecular-weight aliphatic polycarbonates
TWI761404B (en) 2016-12-19 2022-04-21 德商科思創德意志股份有限公司 Process for producing (cyclo) aliphatic polycarbonate polyols having low reactivity
WO2021032555A1 (en) 2019-08-19 2021-02-25 Covestro Deutschland Ag Process for preparing polyether carbonate alcohols
EP3783045A1 (en) 2019-08-19 2021-02-24 Covestro Deutschland AG Process for preparing polyether carbonate polyols
CN114206981A (en) 2019-08-19 2022-03-18 科思创知识产权两合公司 Method for producing polyether carbonate alcohols
EP3783044A1 (en) 2019-08-19 2021-02-24 Covestro Deutschland AG Process for preparing polyether carbonate polyols
WO2021032554A1 (en) 2019-08-19 2021-02-25 Covestro Deutschland Ag Method for preparing polyether carbonate alcohols
EP3783046A1 (en) 2019-08-19 2021-02-24 Covestro Deutschland AG Process for preparing polyether carbonate polyols
EP3862377A1 (en) 2020-02-04 2021-08-11 Covestro Deutschland AG Process for producing polyether carbonate polyols
EP4039727A1 (en) 2021-02-05 2022-08-10 Covestro Deutschland AG Method for the preparation of polyether carbonate alcohols
EP4180474A1 (en) 2021-11-12 2023-05-17 Covestro Deutschland AG Method for the preparation of polyether carbonate alcohols
EP4293065A1 (en) 2022-06-14 2023-12-20 Covestro Deutschland AG Polymers containing a polyether carbonate-containing block, preparation method thereof and use of the polymers as a tenside
EP4378972A1 (en) 2022-11-30 2024-06-05 Covestro Deutschland AG (cyclo)aliphatic polycarbonate polyol composition

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2001091A1 (en) * 1970-01-12 1971-07-22 Huels Chemische Werke Ag Carboxylic acid alcoholysis catalysts forpro

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3298065A4 (en) * 2015-05-21 2019-02-27 Basf Se Preparation of hyperbranched polycarbonate polyols and their use

Also Published As

Publication number Publication date
AT355310B (en) 1980-02-25
DE2523352A1 (en) 1976-12-09
FR2312521A1 (en) 1976-12-24
IT1061310B (en) 1983-02-28
ATA381876A (en) 1979-07-15
ES448262A1 (en) 1977-12-01
BE842196A (en) 1976-11-25
BR7603333A (en) 1976-12-07
FR2312521B1 (en) 1982-09-10
JPS51144492A (en) 1976-12-11

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee