GB757752A - Improvements in or relating to depolymerisation reactions - Google Patents
Improvements in or relating to depolymerisation reactionsInfo
- Publication number
- GB757752A GB757752A GB11231/54A GB1123154A GB757752A GB 757752 A GB757752 A GB 757752A GB 11231/54 A GB11231/54 A GB 11231/54A GB 1123154 A GB1123154 A GB 1123154A GB 757752 A GB757752 A GB 757752A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphate
- phenol
- catalyst
- relating
- cumylcresols
- 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
Links
- 238000006243 chemical reaction Methods 0.000 title 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 abstract 2
- 239000003054 catalyst Substances 0.000 abstract 2
- CJWNFAKWHDOUKL-UHFFFAOYSA-N 2-(2-phenylpropan-2-yl)phenol Chemical compound C=1C=CC=C(O)C=1C(C)(C)C1=CC=CC=C1 CJWNFAKWHDOUKL-UHFFFAOYSA-N 0.000 abstract 1
- GJYCVCVHRSWLNY-UHFFFAOYSA-N 2-butylphenol Chemical group CCCCC1=CC=CC=C1O GJYCVCVHRSWLNY-UHFFFAOYSA-N 0.000 abstract 1
- MVRPPTGLVPEMPI-UHFFFAOYSA-N 2-cyclohexylphenol Chemical class OC1=CC=CC=C1C1CCCCC1 MVRPPTGLVPEMPI-UHFFFAOYSA-N 0.000 abstract 1
- MEEKGULDSDXFCN-UHFFFAOYSA-N 2-pentylphenol Chemical class CCCCCC1=CC=CC=C1O MEEKGULDSDXFCN-UHFFFAOYSA-N 0.000 abstract 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- LLEMOWNGBBNAJR-UHFFFAOYSA-N biphenyl-2-ol Chemical class OC1=CC=CC=C1C1=CC=CC=C1 LLEMOWNGBBNAJR-UHFFFAOYSA-N 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 abstract 1
- 125000000753 cycloalkyl group Chemical group 0.000 abstract 1
- 239000000539 dimer Substances 0.000 abstract 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 abstract 1
- 235000007079 manganese sulphate Nutrition 0.000 abstract 1
- 239000011702 manganese sulphate Substances 0.000 abstract 1
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 abstract 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052753 mercury Inorganic materials 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 150000004780 naphthols Chemical class 0.000 abstract 1
- 150000002989 phenols Chemical class 0.000 abstract 1
- 229910021653 sulphate ion Inorganic materials 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 abstract 1
- 235000009529 zinc sulphate Nutrition 0.000 abstract 1
- 239000011686 zinc sulphate Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C4/00—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms
- C07C4/22—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by depolymerisation to the original monomer, e.g. dicyclopentadiene to cyclopentadiene
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- C07C2527/02—Sulfur, selenium or tellurium; Compounds thereof
- C07C2527/053—Sulfates or other compounds comprising the anion (SnO3n+1)2-
- C07C2527/055—Sulfates or other compounds comprising the anion (SnO3n+1)2- with alkali metals, copper, gold or silver
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
a -Methylstyrene is obtained by depolymerizing 4-methyl-2:4-diphenyl-pent-2-ene in the presence of a phenol of high boiling point. The phenols may be those substituted by one or more alkyl or cycloalkyl groups such as butylphenols, amylphenols, and cyclohexylphenols; those containing 2 or more benzene nuclei such as phenylphenols, p:p1-dihydroxydiphenyl-dimethyl methane, cumylphenol, and the cumylcresols; and the naphthols. About equal quantities of the dimer and the phenol may be used, at a pressure of 40 mms. of mercury. The mixture is preferably heated at 280-300 DEG C. when no catalyst is used, or to 180-220 DEG C. when a catalyst such as an alkali metal acid sulphate, copper sulphate, zinc sulphate, manganese sulphate; or sulphuric acid, aluminium chloride, ferric chloride or an activated earth is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB11231/54A GB757752A (en) | 1954-04-15 | 1954-04-15 | Improvements in or relating to depolymerisation reactions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB11231/54A GB757752A (en) | 1954-04-15 | 1954-04-15 | Improvements in or relating to depolymerisation reactions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB757752A true GB757752A (en) | 1956-09-26 |
Family
ID=9982408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11231/54A Expired GB757752A (en) | 1954-04-15 | 1954-04-15 | Improvements in or relating to depolymerisation reactions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB757752A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3391198A (en) * | 1965-10-15 | 1968-07-02 | Allied Chem | Treatment of phenol process residue |
| US4048199A (en) * | 1974-02-07 | 1977-09-13 | Basf Aktiengesellschaft | Production of aminonitrodihydroxyanthraquinones by partial reduction dinitrodihydroxyanthraquinones |
| US6380448B1 (en) * | 2000-01-03 | 2002-04-30 | San Kaihatsu Kabushiki Kaisha | Method for recovering styrene monomer from polystyrene resin by using a catalyst |
-
1954
- 1954-04-15 GB GB11231/54A patent/GB757752A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3391198A (en) * | 1965-10-15 | 1968-07-02 | Allied Chem | Treatment of phenol process residue |
| US4048199A (en) * | 1974-02-07 | 1977-09-13 | Basf Aktiengesellschaft | Production of aminonitrodihydroxyanthraquinones by partial reduction dinitrodihydroxyanthraquinones |
| US6380448B1 (en) * | 2000-01-03 | 2002-04-30 | San Kaihatsu Kabushiki Kaisha | Method for recovering styrene monomer from polystyrene resin by using a catalyst |
| SG90137A1 (en) * | 2000-03-01 | 2002-07-23 | San Kaihatsu Kabushiki Kaisha | Method for recovering styrene monomer from polystrene resin by using a catalyst |
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