GB809743A - Improvements in and relating to natural rubber articles - Google Patents
Improvements in and relating to natural rubber articlesInfo
- Publication number
- GB809743A GB809743A GB3685554A GB3685554A GB809743A GB 809743 A GB809743 A GB 809743A GB 3685554 A GB3685554 A GB 3685554A GB 3685554 A GB3685554 A GB 3685554A GB 809743 A GB809743 A GB 809743A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strontium
- per cent
- laurate
- acid
- salt
- 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
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
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
The surface cracking of a vulcanized natural rubber article due to exposure to the atmosphere and/or to flexing during use is reduced by incorporating in the rubber a beryllium, magnesium, calcium, strontium, or barium salt of an aliphatic carboxylic acid. The preferred salt is that of a fatty acid, an olefine monocarboxylic acid, or an aliphatic hydroxycarboxylic acid, and may consist in a propionate, butyrate, caprylate, laurate, myristate, palmitate, stearate, oleate, lactate or ricinoleate. A strontium salt of a fatty acid containing 8 to 18 carbon atoms, e.g. strontium laurate, is preferred. In examples are described the preparation and testing of the resistance to cracking of samples prepared by vulcanizing mixes containing natural rubber and 4 per cent by weight of strontium oleate, 4 per cent strontium ricinoleate, 2 and 4 per cent strontium laurate, 4 per cent barium lactate, and 4 per cent calcium laurate, respectively. According to the Provisional Specification the anti-cracking agent may, alternatively, consist of an alkaline earth metal salt of an aromatic carboxylic acid, e.g. phthalic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3685554A GB809743A (en) | 1954-12-21 | 1954-12-21 | Improvements in and relating to natural rubber articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3685554A GB809743A (en) | 1954-12-21 | 1954-12-21 | Improvements in and relating to natural rubber articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB809743A true GB809743A (en) | 1959-03-04 |
Family
ID=10391719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3685554A Expired GB809743A (en) | 1954-12-21 | 1954-12-21 | Improvements in and relating to natural rubber articles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB809743A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0172410A1 (en) * | 1984-08-24 | 1986-02-26 | The Firestone Tire & Rubber Company | Method for increasing the modulus of vulcanizable rubber |
| WO1997032927A1 (en) * | 1996-03-04 | 1997-09-12 | Rhodia Limited | Inhibiting nitrosamine formation in rubber |
-
1954
- 1954-12-21 GB GB3685554A patent/GB809743A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0172410A1 (en) * | 1984-08-24 | 1986-02-26 | The Firestone Tire & Rubber Company | Method for increasing the modulus of vulcanizable rubber |
| WO1997032927A1 (en) * | 1996-03-04 | 1997-09-12 | Rhodia Limited | Inhibiting nitrosamine formation in rubber |
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