GB516688A - Improvements in or relating to the catalytic polymerization of acetylene - Google Patents
Improvements in or relating to the catalytic polymerization of acetyleneInfo
- Publication number
- GB516688A GB516688A GB19806/38A GB1980638A GB516688A GB 516688 A GB516688 A GB 516688A GB 19806/38 A GB19806/38 A GB 19806/38A GB 1980638 A GB1980638 A GB 1980638A GB 516688 A GB516688 A GB 516688A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- catalyst
- vinylacetylene
- chloride
- july
- 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
- C07C2/38—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 dienes or alkynes
-
- 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
- C07C2527/06—Halogens; Compounds thereof
- C07C2527/08—Halides
- C07C2527/10—Chlorides
-
- 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
- C07C2527/06—Halogens; Compounds thereof
- C07C2527/122—Compounds comprising a halogen and copper
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
516,688. Vinylacetylene. DU PONT DE NEMOURS & CO., E. I. July 4, 1938, No. 19806. Convention date, July 2, 1937. [Class 2 (iii)] Vinylacetylene is prepared by polymerizing acetylene in the presence of a liquid mass of catalyst comprising water saturated or nearly saturated with ammonium chloride and cuprous chloride in the molar ratio.of 1.7-2.2:1, and not containing more than about 0.6 per cent. of. hydrogen chloride by weight. The concentration of the salts may slightly exceed saturation so that some solid phase is present. Metallic copper equivalent to about 4 per cent. by weight of the catalyst may be present, or copper paddles may be used in the reactor.- With such a catalyst the ratio of vinylacetylene to byproducts, mainly divinylacetylene, does not vary with the temperature and higher reaction temperatures, e.g., 50-75‹C., may be used. Specification 451,442 is referred to. The Specification as open to inspection includes the description of a catalyst consisting of 36-38, per cent. cuprous chloride, 19-21 per cent. of ammonium chloride, and 41-45 per cent. water. It also does not specifically limit the hydrochloric acid concentration in the catalyst to 0.6 per cent. up to 5 per cent. or more being referred to. Preferably the hydrochloric acid is added to the catalyst and the pH suddenly drops from about 4 or 5 to less than 1. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US516688XA | 1937-07-02 | 1937-07-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB516688A true GB516688A (en) | 1940-01-09 |
Family
ID=21972680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19806/38A Expired GB516688A (en) | 1937-07-02 | 1938-07-04 | Improvements in or relating to the catalytic polymerization of acetylene |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB516688A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107185562A (en) * | 2017-05-27 | 2017-09-22 | 北京华福工程有限公司 | A kind of catalyst reacted for acetylene dimer and its preparation method and application |
-
1938
- 1938-07-04 GB GB19806/38A patent/GB516688A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107185562A (en) * | 2017-05-27 | 2017-09-22 | 北京华福工程有限公司 | A kind of catalyst reacted for acetylene dimer and its preparation method and application |
| CN107185562B (en) * | 2017-05-27 | 2019-10-29 | 北京华福工程有限公司 | A kind of catalyst and its preparation method and application for acetylene dimer reaction |
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