GB732948A - Improvements in the vulcanization of rubber - Google Patents
Improvements in the vulcanization of rubberInfo
- Publication number
- GB732948A GB732948A GB20179/53A GB2017953A GB732948A GB 732948 A GB732948 A GB 732948A GB 20179/53 A GB20179/53 A GB 20179/53A GB 2017953 A GB2017953 A GB 2017953A GB 732948 A GB732948 A GB 732948A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hexachlorocyclopentadiene
- per cent
- rubber
- dechlorinated
- sulphur
- 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
- C08K5/02—Halogenated hydrocarbons
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)
Abstract
Sulphur-vulcanizable rubbery hydrocarbon polymerisates derived from conjugated dienes are vulcanized by heating in the presence of partially dechlorinated hexachlorocyclopentadiene having a chlorine content of 60-75 per cent preferably in an amount of 1 to 200 per cent. Sulphur and metal oxide activators need not be present, but zinc oxide, magnesia and litharge in an amount of 0.5 to 20 per cent on the rubber, or 2-mercaptobenzthiazole may be used to accelerate the action. Carbon black may also be added. The dechlorinated hexachlorocyclopentadiene may be made according to the method described in Group IV (b). The conjugated diene rubber may be polybutadiene, a butadiene-styrene copolymer, or a butadiene-para-methyl-styrene copolymer.ALSO:Partially dechlorinated hexachlorocyclopentadiene melting at 123-124 DEG C. and having the approximate composition C10Cl10 may be obtained by slowly adding copper powder to a mixture of hexachlorocyclopentadiene and toluene under reflux, cooling, filtering, removing excess hexachlorocyclopentadiene and toluene by steam distillation and then dissolving the residue in dioxan and precipitating by means of methanol. The product may be used as a vulcanizing agent for natural and synthetic rubber as described in Groups IV (a) and V.ALSO:Sulphur-vulcanizable rubbery hydrocarbon polymerizates derived from conjugated dienes including natural rubber are vulcanized by heating in the presence of partially dechlorinated hexachloro-cyclopentadiene having a chlorine content of 60-75 per cent preferably in an amount of 1-200 per cent for a time sufficient to vulcanize the polymerizate. Sulphur and metal oxide activators need not be present, but zinc oxide, magnesia, and litharge in an amount of 0.5-20 per cent on the rubber, or 2-mercaptobenzthiazole may be used to accelerate the action. Carbon black may also be added. The dechlorinated hexachlorocyclopentadiene may be made according to the method described in Group IV(b).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US732948XA | 1952-10-30 | 1952-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB732948A true GB732948A (en) | 1955-06-29 |
Family
ID=22112892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20179/53A Expired GB732948A (en) | 1952-10-30 | 1953-07-21 | Improvements in the vulcanization of rubber |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB732948A (en) |
-
1953
- 1953-07-21 GB GB20179/53A patent/GB732948A/en not_active Expired
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