GB718797A - Improvements in synthetic rubbers - Google Patents
Improvements in synthetic rubbersInfo
- Publication number
- GB718797A GB718797A GB46553A GB46553A GB718797A GB 718797 A GB718797 A GB 718797A GB 46553 A GB46553 A GB 46553A GB 46553 A GB46553 A GB 46553A GB 718797 A GB718797 A GB 718797A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vinyl
- methyl
- mixture
- dialkylbutadiene
- butadiene
- 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
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F236/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F236/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F236/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerisation Methods In General (AREA)
Abstract
An aqueous emulsion of a synthetic rubber is made from 5 to 15 parts of a vinyl pyridine and 85 to 95 parts of a mixture of butadiene-1, 3 and 2,3-dialkylbutadiene-1,3, the latter being 5 to 50 per cent. of the diene mixture. The vinyl pyridine may be 2-vinyl, 3-vinyl, 4-vinyl, 2-methyl-5-vinyl, 5-ethyl-2-vinyl, 2, 4-dimethyl-6-vinyl or 2,4-diethyl-6-vinyl pyridine. The dialkylbutadiene may be 2, 3-dimethyl-, 2-methyl-3-ethyl- or 2-methyl-3-butyl-butadiene-1,3. Conventional polymerization methods are used. In the example the emulsifying agent is a fatty acid soap, the catalyst is cumene or diisopropyl benzene hydroperoxide, the activator is tetraethylene pentamine, the stabilizer is the sodium salt of a naphthalene sulphonic acid-formaldehyde condensate, and the modifier is a mixture of dodecyl, tetradecyl and hexadecyl mercaptans. The second order transition temperature of the terpolymer is -74 DEG C. The terpolymers may be vulcanized to give products having improved low-temperature flexibility and resilience.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB46553A GB718797A (en) | 1953-01-07 | 1953-01-07 | Improvements in synthetic rubbers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB46553A GB718797A (en) | 1953-01-07 | 1953-01-07 | Improvements in synthetic rubbers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB718797A true GB718797A (en) | 1954-11-17 |
Family
ID=9704830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB46553A Expired GB718797A (en) | 1953-01-07 | 1953-01-07 | Improvements in synthetic rubbers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB718797A (en) |
-
1953
- 1953-01-07 GB GB46553A patent/GB718797A/en not_active Expired
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