Process for enlarging the surface of particles
First Claim
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1. A method for reducing the size of liquid absorbing polymer particles comprising the steps of:
- a) subjecting the particles to one of a liquid and a moist atmosphere containing said liquid;
b) waiting a sufficient length of time such that said liquid penetrates into the polymer particles; and
c) irradiating the particles, following step b), with microwaves to suddenly evaporate said liquid, wherein an associated spontaneous pressure increase in molecular compound of the polymer particles explodes a structure of the polymer particles.
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Abstract
In order to enlarge the surface of particles which absorb liquids at leasto a limited extent, the particles are exposed to a liquid or to a humid atmosphere containing this liquid at least until said liquid has penetrated into the area of the particles close to their surface, and the liquid-containing particles are then irradiated with micro-waves until the penetrated liquid evaporates. The surface of the particles is torn down to the depth of penetration of the liquid and thus enlarged, or the particles break up, creating small broken pieces with an irregular and enlarged surface.
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Citations
6 Claims
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1. A method for reducing the size of liquid absorbing polymer particles comprising the steps of:
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a) subjecting the particles to one of a liquid and a moist atmosphere containing said liquid; b) waiting a sufficient length of time such that said liquid penetrates into the polymer particles; and c) irradiating the particles, following step b), with microwaves to suddenly evaporate said liquid, wherein an associated spontaneous pressure increase in molecular compound of the polymer particles explodes a structure of the polymer particles. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification