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US 6,664,304 B2Granted
Process for producing fine rubber powder by using waste rubber
OwnerShuhua Panginventor
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Abstract
This invention provides a process for producing fine rubber powders by using waste rubber, comprising the steps of pre-pulverizing waste rubber into particles with a size of 1-4 mm; soaking the particles in a solvent selected from one or more alcohols and/or ethers; and pulverizing the soaked rubber particles into rubber powders with a size of less than 180 μm. The process according to the invention is an ideal method in industry due to its low costs and without pollution.
Claims5
A process for producing fine rubber powders at ambient temperatures by using waste rubber comprising the following steps of:
- a) pre-pulverizing waste rubber by a mechanical roller into particles with a size of 1-4 mm;
- b) soaking the particles in a solvent selected from one or more alcohols and/or ethers from 30 seconds to 10 minutes;
- and
- c) pulverizing the soaked rubber particles into rubber powders with a size of less than 180 μm.
1 more element
Dependencies are inferred from the claim text.