GB645086A - Aliphatic olefins and cyclic process for manufacture thereof - Google Patents
Aliphatic olefins and cyclic process for manufacture thereofInfo
- Publication number
- GB645086A GB645086A GB8559/48A GB855948A GB645086A GB 645086 A GB645086 A GB 645086A GB 8559/48 A GB8559/48 A GB 8559/48A GB 855948 A GB855948 A GB 855948A GB 645086 A GB645086 A GB 645086A
- Authority
- GB
- United Kingdom
- Prior art keywords
- saturated hydrocarbons
- lighter
- olefins
- fraction
- polymerization zone
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
- C07C2/02—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons
- C07C2/04—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons by oligomerisation of well-defined unsaturated hydrocarbons without ring formation
- C07C2/06—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons by oligomerisation of well-defined unsaturated hydrocarbons without ring formation of alkenes, i.e. acyclic hydrocarbons having only one carbon-to-carbon double bond
- C07C2/08—Catalytic processes
- C07C2/14—Catalytic processes with inorganic acids; with salts or anhydrides of acids
- C07C2/18—Acids of phosphorus; Salts thereof; Phosphorus oxides
-
- 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
- C07C2527/14—Phosphorus; Compounds thereof
- C07C2527/16—Phosphorus; Compounds thereof containing oxygen
- C07C2527/167—Phosphates or other compounds comprising the anion (PnO3n+1)(n+2)-
- C07C2527/173—Phosphoric acid or other acids with the formula Hn+2PnO3n+1
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
In the preparation of polymeric olefins boiling above about 325 DEG F. and below about 520 DEG F. by contacting propylene with an acid polymerization catalyst in a polymerization zone, separating a lighter olefinic fraction boiling below said polymeric olefins, recycling said lighter fraction to the polymerization zone, and recovering said polymeric olefins boiling above 325 DEG F., decline in conversion rate to said higher boiling polymers is inhibited by rejecting a fraction comprising saturated hydrocarbons formed in said polymerization zone. Saturated hydrocarbons may be removed from the entire product or part thereof, such as the recycle stream. Thus part of said stream may be bled out. More selectively, saturated hydrocarbons are removed by liquid phase solvent extraction or unsaturated hydrocarbons are separated from them by adsorption on silica gel or the like. Alternatively, C5 and lighter saturated hydrocarbons are removed by fractionating the product, and C6 and above are recycled and suppress additional formation thereof. Part of the C5 may be recycled also. Preferably the process is applied to the interpolymerization of propylene with an acyclic C6 to C11 olefin with a phosphoric acid catalyst as in Specification 638,514, and operating conditions are otherwise as described in the said Specification as is the conversion of the olefins to alkyl sulphonates, alcohols, phenyl alkanes and alkyl phenols. Diolefins may be eliminated before conversion to monophenyl alkanes by silica gel adsorption or the mixture used to form mono- and di-phenyl alkanes which are then separated by distillation. Results of measurements of infra-red absorption which indicate the structure of the polypropylene products are given.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US645086XA | 1947-04-05 | 1947-04-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB645086A true GB645086A (en) | 1950-10-25 |
Family
ID=22056462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8559/48A Expired GB645086A (en) | 1947-04-05 | 1948-03-23 | Aliphatic olefins and cyclic process for manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB645086A (en) |
-
1948
- 1948-03-23 GB GB8559/48A patent/GB645086A/en not_active Expired
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