GB381743A - Improvements relating to the manufacture of crude rubber - Google Patents
Improvements relating to the manufacture of crude rubberInfo
- Publication number
- GB381743A GB381743A GB30360/31A GB3036031A GB381743A GB 381743 A GB381743 A GB 381743A GB 30360/31 A GB30360/31 A GB 30360/31A GB 3036031 A GB3036031 A GB 3036031A GB 381743 A GB381743 A GB 381743A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rubber
- latex
- creaming
- centrifuging
- properties
- 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
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C1/00—Treatment of rubber latex
- C08C1/02—Chemical or physical treatment of rubber latex before or during concentration
- C08C1/075—Concentrating
- C08C1/08—Concentrating with the aid of creaming agents
Landscapes
- Chemical & Material Sciences (AREA)
- General 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
Preserved latex is separated into two layers by a creaming process, and the heavier layer, poor in rubber and rich in non-caoutchoue ingredients of the latex, is treated to obtain the whole of the solids without denaturing the proteins. The usual creaming agents are employed in such proportions and for such time as to obtain a lower layer having the desired proportion of rubber to non-rubber constituents. The creaming may be followed by centrifuging. Spray drying is the preferred method of removing the water. The rubber thus obtained may have a caoutchouc content as low as 20 per cent, and may be used alone or in admixture with ordinary crude rubber to modify its properties. This rubber has the same tensile strength as first grade rubber with less stretch, is fast curing, ages well, and has a high resistance to tearing. Examples of various mixes and their properties are given in the Specification. The Specification as open to inspection under Sect. 91 (3) (a) describes also the separation of the latex into two portions by centrifuging alone. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US381743XA | 1930-11-12 | 1930-11-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB381743A true GB381743A (en) | 1932-10-13 |
Family
ID=21898471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30360/31A Expired GB381743A (en) | 1930-11-12 | 1931-11-02 | Improvements relating to the manufacture of crude rubber |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB381743A (en) |
-
1931
- 1931-11-02 GB GB30360/31A patent/GB381743A/en not_active Expired
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