GB497137A - Improvement in rubber compositions - Google Patents
Improvement in rubber compositionsInfo
- Publication number
- GB497137A GB497137A GB14098/38A GB1409838A GB497137A GB 497137 A GB497137 A GB 497137A GB 14098/38 A GB14098/38 A GB 14098/38A GB 1409838 A GB1409838 A GB 1409838A GB 497137 A GB497137 A GB 497137A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resin
- mix
- hardened
- last ingredient
- mastication
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L21/00—Compositions of unspecified rubbers
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
In making a rubber mix including artificial resin, which is to be hardened, as for example during an eventual vulcanization, the mix is cooled after any step in the processing operations involving an increased temperature which would tend to harden the resin. Further precautions include adding the resin as the last ingredient when mixing in fillers and controlling the mastication or other operations so that the mix is exposed to hardening temperatures for as short a time as possible. The resin may be a partly condensed phenol-aldehyde.ALSO:In making a rubber mix including a natural or artificial resin, which is to be hardened as for example during an eventual vulcanization, the mix is cooled after any step in the processing operations involving an increased temperature which would tend to harden the resin. Further precautions include adding the resin as the last ingredient when mixing in fillers, or where the resin is one such as shellac which is hardened by such basic oxides as zinc or magnesium oxides or lime, adding the basic oxides as the last ingredient, and controlling mastication or other operations so that the mix is exposed to hardening temperatures for as short a time as possible. The resin may also be a partly condensed phenol-aldehyde.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US497137XA | 1937-05-15 | 1937-05-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB497137A true GB497137A (en) | 1938-12-13 |
Family
ID=21961290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14098/38A Expired GB497137A (en) | 1937-05-15 | 1938-05-11 | Improvement in rubber compositions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB497137A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2459739A (en) * | 1944-04-01 | 1949-01-18 | Firestone Tire & Rubber Co | Elastomeric copolymer mixed with phenol-aldehyde resin |
-
1938
- 1938-05-11 GB GB14098/38A patent/GB497137A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2459739A (en) * | 1944-04-01 | 1949-01-18 | Firestone Tire & Rubber Co | Elastomeric copolymer mixed with phenol-aldehyde resin |
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