GB875530A - Improvements in concentrated latex - Google Patents
Improvements in concentrated latexInfo
- Publication number
- GB875530A GB875530A GB2418757A GB2418757A GB875530A GB 875530 A GB875530 A GB 875530A GB 2418757 A GB2418757 A GB 2418757A GB 2418757 A GB2418757 A GB 2418757A GB 875530 A GB875530 A GB 875530A
- Authority
- GB
- United Kingdom
- Prior art keywords
- latex
- peroxidized
- olefines
- aerobic
- aerobic treatment
- 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
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
-
- 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
-
- 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
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
- C08K5/175—Amines; Quaternary ammonium compounds containing COOH-groups; Esters or salts thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The rate at which Hevea brasiliensis latex or a concentrate thereof matures, i.e. attains the mechanical stability suitable for industrial use, is increased by maintaining the latex in aerobic condition and adding, preferably before the aerobic treatment, a substance which interacts with the peroxidic groups formed in the rubber by the aerobic treatment and so counteracts oxidative degradation. The aerobic condition may be obtained by agitation of the latex in the presence of a controlled amount of air or oxygen. The added substances are exemplified by aromatic diamines such as benzidine, the phenylenediamines and polyalkylene polyamines, e.g. tetraethylene pentamine, which favour development of cross-linking in peroxidized olefines, dior poly-hydric phenols such as di-tert. butyl hydroquinone which inhibit chain-scission in peroxidized olefines, and sequestering agents such as ethylenediamine tetra-acetic acid. Specification 869,283 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2418757A GB875530A (en) | 1957-07-30 | 1957-07-30 | Improvements in concentrated latex |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2418757A GB875530A (en) | 1957-07-30 | 1957-07-30 | Improvements in concentrated latex |
Publications (1)
Publication Number | Publication Date |
---|---|
GB875530A true GB875530A (en) | 1961-08-23 |
Family
ID=10207773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2418757A Expired GB875530A (en) | 1957-07-30 | 1957-07-30 | Improvements in concentrated latex |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB875530A (en) |
-
1957
- 1957-07-30 GB GB2418757A patent/GB875530A/en not_active Expired
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