GB733069A - Improvements relating to processes for vulcanising rubber and to retarders suitable for use in them - Google Patents
Improvements relating to processes for vulcanising rubber and to retarders suitable for use in themInfo
- Publication number
- GB733069A GB733069A GB531152A GB531152A GB733069A GB 733069 A GB733069 A GB 733069A GB 531152 A GB531152 A GB 531152A GB 531152 A GB531152 A GB 531152A GB 733069 A GB733069 A GB 733069A
- Authority
- GB
- United Kingdom
- Prior art keywords
- trimethyl
- dihydroquinoline
- rubber
- nitroso
- acid
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0025—Crosslinking or vulcanising agents; including accelerators
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
Abstract
2 : 2 : 4 - Trimethyl - 1 : 2 : - dihydroquinoline is polymerized with the aid of a non-oxidizing mineral acid (e.g. hydrochloric) and the polymer so obtained treated with sulphuric acid and sodium nitrite to give the N-nitroso derivative.ALSO:Aniline and acetone are condensed in the presence of benzenesulphonic acid to give 2 : 2 : 4 - trimethyl - 1 : 2 - dihydroquinoline, purified by fractional distillation. The product is reduced to the tetrahydro compound by catalytic hydrogenation in alcohol solution with Raney nickel and 1-nitroso-2 : 2 : 4-trimethyl-1 : 2 : 3 : 4-tetrahydroquinoline obtained there-from by treatment with sodium nitrite and dilute sulphuric acid. The Provisional Specification describes also the preparation of 1-nitroso - 2 : 2 : 4 - trimethyl - 1 : 2 - dihydroquinoline.ALSO:In a process for vulcanizing rubber there is used as retarder an N-nitroso derivative of either (a) a polymer of 2 : 2 : 4-trimethyl-1 : 2-dihydroquinoline formed from the monomer with the aid of a non-oxidizing mineral acid (e.g. hydrochloric), or (b) 2 : 2 : 4-trimethyl-1 : 2 : 3 : 4-tetrahydroquinoline. Such retarders are particularly useful to prevent scorching of natural or synthetic rubber stock containing reinforcing furnace carbon block. They may be used to the extent of 1/4 -1 per cent by weight of rubber present. Examples give the following compositions: (1) smoked rubber sheet, carbon, zinc oxide, softener, anti-oxidant, stearic acid, sulphur, accelerator and one of the retarders of the invention; (2) pale crepe rubber, blanc fixe, zinc oxide, stearic acid, sulphur, accelerator and the retarder. The softener, antioxidant and accelerators are referred to by their trade names, an additional accelerator being mentioned in the Provisional Specification. The latter also gives an example of the use of the N-nitroso derivative of 2 : 2 : 4-trimethyl-1 : 2-dihydroquinoline itself as retarder.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB531152A GB733069A (en) | 1952-02-28 | 1952-02-28 | Improvements relating to processes for vulcanising rubber and to retarders suitable for use in them |
| FR1076995D FR1076995A (en) | 1952-02-28 | 1953-02-25 | Improvements in rubber processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB531152A GB733069A (en) | 1952-02-28 | 1952-02-28 | Improvements relating to processes for vulcanising rubber and to retarders suitable for use in them |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB733069A true GB733069A (en) | 1955-07-06 |
Family
ID=9793714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB531152A Expired GB733069A (en) | 1952-02-28 | 1952-02-28 | Improvements relating to processes for vulcanising rubber and to retarders suitable for use in them |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1076995A (en) |
| GB (1) | GB733069A (en) |
-
1952
- 1952-02-28 GB GB531152A patent/GB733069A/en not_active Expired
-
1953
- 1953-02-25 FR FR1076995D patent/FR1076995A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1076995A (en) | 1954-11-03 |
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