DE1420476A1 - Verfahren zur Herstellung von Blockmischpolyester - Google Patents
Verfahren zur Herstellung von BlockmischpolyesterInfo
- Publication number
- DE1420476A1 DE1420476A1 DE19581420476 DE1420476A DE1420476A1 DE 1420476 A1 DE1420476 A1 DE 1420476A1 DE 19581420476 DE19581420476 DE 19581420476 DE 1420476 A DE1420476 A DE 1420476A DE 1420476 A1 DE1420476 A1 DE 1420476A1
- Authority
- DE
- Germany
- Prior art keywords
- acid
- phosgene
- tertiary amine
- solution
- dipl
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 25
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229920000728 polyester Polymers 0.000 title description 11
- 239000002253 acid Substances 0.000 claims description 26
- 238000006243 chemical reaction Methods 0.000 claims description 26
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 claims description 20
- 150000003512 tertiary amines Chemical class 0.000 claims description 19
- 229920001634 Copolyester Polymers 0.000 claims description 11
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 4
- 241000790917 Dioxys <bee> Species 0.000 claims description 2
- 150000002440 hydroxy compounds Chemical class 0.000 description 25
- 150000002148 esters Chemical class 0.000 description 20
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 18
- -1 hydroxyl compound Chemical class 0.000 description 16
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 14
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 10
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 10
- 229940106691 bisphenol a Drugs 0.000 description 9
- 239000002904 solvent Substances 0.000 description 9
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 7
- 239000000376 reactant Substances 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- 239000001361 adipic acid Substances 0.000 description 5
- 235000011037 adipic acid Nutrition 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 3
- 150000008064 anhydrides Chemical class 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 230000032050 esterification Effects 0.000 description 3
- 238000005886 esterification reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 239000011541 reaction mixture Substances 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- DZBUGLKDJFMEHC-UHFFFAOYSA-N acridine Chemical compound C1=CC=CC2=CC3=CC=CC=C3N=C21 DZBUGLKDJFMEHC-UHFFFAOYSA-N 0.000 description 2
- QMKYBPDZANOJGF-UHFFFAOYSA-N benzene-1,3,5-tricarboxylic acid Chemical compound OC(=O)C1=CC(C(O)=O)=CC(C(O)=O)=C1 QMKYBPDZANOJGF-UHFFFAOYSA-N 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 230000001588 bifunctional effect Effects 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 150000001261 hydroxy acids Chemical class 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- KNKRKFALVUDBJE-UHFFFAOYSA-N 1,2-dichloropropane Chemical compound CC(Cl)CCl KNKRKFALVUDBJE-UHFFFAOYSA-N 0.000 description 1
- WCASXYBKJHWFMY-NSCUHMNNSA-N 2-Buten-1-ol Chemical compound C\C=C\CO WCASXYBKJHWFMY-NSCUHMNNSA-N 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- SJZRECIVHVDYJC-UHFFFAOYSA-N 4-hydroxybutyric acid Chemical compound OCCCC(O)=O SJZRECIVHVDYJC-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- 101100286286 Dictyostelium discoideum ipi gene Proteins 0.000 description 1
- JLTDJTHDQAWBAV-UHFFFAOYSA-N N,N-dimethylaniline Chemical compound CN(C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 159000000032 aromatic acids Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 125000005587 carbonate group Chemical group 0.000 description 1
- MOIPGXQKZSZOQX-UHFFFAOYSA-N carbonyl bromide Chemical compound BrC(Br)=O MOIPGXQKZSZOQX-UHFFFAOYSA-N 0.000 description 1
- 150000007942 carboxylates Chemical group 0.000 description 1
- 150000001244 carboxylic acid anhydrides Chemical class 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 229920005556 chlorobutyl Polymers 0.000 description 1
- 150000003982 chlorocarboxylic acids Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- HPXRVTGHNJAIIH-UHFFFAOYSA-N cyclohexanol Chemical compound OC1CCCCC1 HPXRVTGHNJAIIH-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- GWZCCUDJHOGOSO-UHFFFAOYSA-N diphenic acid Chemical compound OC(=O)C1=CC=CC=C1C1=CC=CC=C1C(O)=O GWZCCUDJHOGOSO-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- WCASXYBKJHWFMY-UHFFFAOYSA-N gamma-methylallyl alcohol Natural products CC=CCO WCASXYBKJHWFMY-UHFFFAOYSA-N 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- XXROGKLTLUQVRX-UHFFFAOYSA-N hydroxymethylethylene Natural products OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 description 1
- 239000012442 inert solvent Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000011356 non-aqueous organic solvent Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- WLJVXDMOQOGPHL-UHFFFAOYSA-N phenylacetic acid Chemical class OC(=O)CC1=CC=CC=C1 WLJVXDMOQOGPHL-UHFFFAOYSA-N 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 1
- 150000003628 tricarboxylic acids Chemical class 0.000 description 1
- YFTHZRPMJXBUME-UHFFFAOYSA-N tripropylamine Chemical compound CCCN(CCC)CCC YFTHZRPMJXBUME-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/64—Polyesters containing both carboxylic ester groups and carbonate groups
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)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US679747A US3030331A (en) | 1957-08-22 | 1957-08-22 | Process for preparing copolyesters comprising reacting a carbonyl halide with a dicarboxylic acid and a dihydroxy compound in the presence of a tertiary amine |
| US124265A US3220976A (en) | 1957-08-22 | 1961-06-15 | Process for the preparation of copolyesters comprising reacting a bishaloformate of a dihydroxy compound with a difunctional carboxylic acid in a solution containing tertiary amine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1420476A1 true DE1420476A1 (de) | 1968-10-03 |
Family
ID=26822368
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19581420476 Pending DE1420476A1 (de) | 1957-08-22 | 1958-08-21 | Verfahren zur Herstellung von Blockmischpolyester |
| DE19581495912 Pending DE1495912A1 (de) | 1957-08-22 | 1958-08-21 | Verfahren zur Herstellung linearer Mischpolyester |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19581495912 Pending DE1495912A1 (de) | 1957-08-22 | 1958-08-21 | Verfahren zur Herstellung linearer Mischpolyester |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3220976A (en, 2012) |
| BE (1) | BE570530A (en, 2012) |
| DE (2) | DE1420476A1 (en, 2012) |
| FR (1) | FR1211559A (en, 2012) |
| GB (1) | GB870096A (en, 2012) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0146836A3 (en) * | 1983-12-16 | 1987-01-14 | General Electric Company | Copolyester-carbonate resins |
| US5408027A (en) * | 1993-03-05 | 1995-04-18 | Bayer Aktiengesellschaft | Process for the production of aliphatic-aromatic polycarbonates |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3312659A (en) * | 1967-04-04 | Catalytic preparation of polycarbon- ates from bisphenol and a carbonate precursor | ||
| DE1181844B (de) * | 1960-07-30 | 1964-11-19 | Bayer Ag | Lackloesungen |
| US3207814A (en) * | 1961-01-03 | 1965-09-21 | Gen Electric | Carbonate-polyester copolymer resinous compositions |
| US3355414A (en) * | 1961-09-14 | 1967-11-28 | Eastman Kodak Co | Thermosetting polyesters |
| US3312661A (en) * | 1962-07-03 | 1967-04-04 | Union Carbide Corp | Process for preparing polycarbonates by self-condensation of bisphenol dichloroformate |
| US3312660A (en) * | 1962-07-03 | 1967-04-04 | Union Carbide Corp | Process for preparing polycarbonates by self-condensation of bisphenol dichloroformate |
| US3312662A (en) * | 1962-07-03 | 1967-04-04 | Union Carbide Corp | Catalytic process for preparing polycarbonates by self-condensation of bisphenol dichloroformate |
| JPS5928226B2 (ja) | 1975-11-10 | 1984-07-11 | アデカ ア−ガスカガク カブシキガイシヤ | アンテイカサレタゴウセイジユシソセイブツ |
| DE2651639A1 (de) * | 1976-11-12 | 1978-05-24 | Bayer Ag | Verfahren zur herstellung von kohlensaeureestern von polyesterpolyolen |
| US4216298A (en) * | 1976-11-12 | 1980-08-05 | Bayer Aktiengesellschaft | Process for the preparation of carbonic acid bis-diphenol esters of polyester-diols and their use for the preparation of high-molecular segmented polyester/polycarbonates which can be processed as thermoplastics |
| DE2712435A1 (de) * | 1977-03-22 | 1978-09-28 | Bayer Ag | Verfahren zur herstellung von kohlensaeurearylestern von ueber carbonat- gruppen-verlaengerten polyesterdiolen |
| US4297455A (en) * | 1977-03-22 | 1981-10-27 | Bayer Aktiengesellschaft | Process for the preparation of carbonic acid aryl esters of polyester-diols lengthened via carbonate groups and their use for the preparation of polyester-diol bis-diphenol carbonates and polyester/polycarbonates |
| DE2726416A1 (de) * | 1977-06-11 | 1978-12-21 | Bayer Ag | Verfahren zur herstellung von kohlensaeure-bis-diphenol-estern von ueber carbonat-gruppen-verlaengerten polyalkylenoxiddiolen und ihre verwendung zur herstellung von hochmolekularen, segmentierten, thermoplastisch verarbeitbaren polyaether-polycarbonaten |
| EP0004020B1 (de) * | 1978-03-10 | 1981-07-15 | Bayer Ag | Polycarbonat-Formmassen mit verbesserten zähelastischen Eigenschaften |
| US4374973A (en) * | 1978-11-30 | 1983-02-22 | Allied Corporation | Polycarbonates with suppressed aging characteristics |
| US4219635A (en) * | 1979-01-26 | 1980-08-26 | Allied Chemical Corporation | Process for poly (bisphenol A/terephthalate/carbonate) using pyridine reaction medium |
| US4255556A (en) * | 1979-04-12 | 1981-03-10 | Allied Chemical Corporation | Preparation of poly(ester carbonate) by interfacial method |
| US4233414A (en) | 1979-05-29 | 1980-11-11 | Argus Chemical Corporation | Polyhydric phenol coester stabilizers |
| DE3333863A1 (de) * | 1983-09-20 | 1985-04-04 | Bayer Ag, 5090 Leverkusen | Phasengrenzflaechenverfahren zur herstellung vollaromatischer polyestercarbonate |
| DE3333864A1 (de) * | 1983-09-20 | 1985-04-04 | Bayer Ag, 5090 Leverkusen | Verfahren zur herstellung von aromatischen polyestercarbonaten |
| US4851498A (en) * | 1987-12-16 | 1989-07-25 | General Electric Company | Thermoplastic molding resins having dicyclopentadienyl derivative radical in polymer backbone |
| US5045610A (en) * | 1989-08-31 | 1991-09-03 | The Dow Chemical Company | Blend of copolyestercarbonate polymer derived from diaryl dicarboxylic acid |
| KR950013539B1 (ko) * | 1991-11-13 | 1995-11-08 | 재단법인한국화학연구소 | 폴리이미드 공중합체 및 그 제조방법 |
| KR100322264B1 (ko) | 1999-12-31 | 2002-02-06 | 김윤 | 코폴리카보네이트 수지의 연속 제조방법 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2517965A (en) * | 1948-03-23 | 1950-08-08 | Pittsburgh Plate Glass Co | Purification of carbonic acid esters |
| US2615914A (en) * | 1949-02-08 | 1952-10-28 | Chessie E Rehberg | Alkyl carbonates of lactates |
| DE890792C (de) * | 1951-09-07 | 1953-08-13 | Badische Anilin- & Soda-Fabrik Aktiengesellschaft, Ludwigshafen1 Rhein | Verfahren zur Herstellung von Carbonsäureestern |
| DE1101386B (de) * | 1956-12-04 | 1961-03-09 | Bayer Ag | Verfahren zur Herstellung monomerer Kohlensaeureester |
-
0
- BE BE570530D patent/BE570530A/xx unknown
-
1958
- 1958-07-31 GB GB24700/58A patent/GB870096A/en not_active Expired
- 1958-08-19 FR FR1211559D patent/FR1211559A/fr not_active Expired
- 1958-08-21 DE DE19581420476 patent/DE1420476A1/de active Pending
- 1958-08-21 DE DE19581495912 patent/DE1495912A1/de active Pending
-
1961
- 1961-06-15 US US124265A patent/US3220976A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0146836A3 (en) * | 1983-12-16 | 1987-01-14 | General Electric Company | Copolyester-carbonate resins |
| US5408027A (en) * | 1993-03-05 | 1995-04-18 | Bayer Aktiengesellschaft | Process for the production of aliphatic-aromatic polycarbonates |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1495912A1 (de) | 1969-05-22 |
| US3220976A (en) | 1965-11-30 |
| BE570530A (en, 2012) | |
| GB870096A (en) | 1961-06-14 |
| FR1211559A (fr) | 1960-03-17 |
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