Method for producing rubber wet masterbatch and method for producing rubber composition
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United States of America Patent
Stats
-
Jan 10, 2023
Grant Date -
Jul 29, 2021
app pub date -
Jan 20, 2021
filing date -
Jan 27, 2020
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for producing a rubber wet masterbatch includes mixing a rubber latex solution and a coagulant with a carbon black-containing slurry aqueous solution in which a carbon black is dispersed in water, to produce a carbon black-containing rubber latex aqueous solution having a pH of 7 to 8.5; adding additional coagulant to the carbon black-containing rubber latex aqueous solution obtained to produce a carbon black-containing rubber coagulum; and dehydrating and drying the carbon black-containing rubber coagulum obtained to produce a rubber wet masterbatch, wherein a rubber component contained in the rubber latex solution is added at an addition rate of 10 g/min or more and 100 g/min or less and the part of the coagulant is added at an addition rate of 10 mmol/min or more and 100 mmol/min or less per 100 g of the carbon black contained in the carbon black-containing slurry aqueous solution.
First Claim
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International Classification(s)
- 2021 Application Filing Year
- C08J Class
- 2084 Applications Filed
- 595 Patents Issued To-Date
- 28.56 % Issued To-Date
Cited Art Landscape
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- 0 Citation Count
- C08J Class
- 0 % this patent is cited more than
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