Forming a chemically cross-linked particle of a desired shape and diameter
First Claim
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1. A method, comprising:
- providing an uncross-linked resin in particulate form, the uncross-linked resin being selected from the group consisting of polyamides, polyureas, polyurethanes, and methacrylates;
agglomerating the resin into a mass;
compressing the mass; and
cross-linking the mass to thereby form a cross-linked particle.
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Abstract
Chemically cross-linked polymeric particles are formed using mechanical rather than chemical processes, facilitating production of small-diameter particles in a manner largely independent of the viscosity or density of the polymer. For example, an uncross-linked resin may be provided in particulate form, agglomerated, and compressed into a mass of a desired shape with a desired diameter, and subsequently cross-linked.
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Citations
21 Claims
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1. A method, comprising:
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providing an uncross-linked resin in particulate form, the uncross-linked resin being selected from the group consisting of polyamides, polyureas, polyurethanes, and methacrylates; agglomerating the resin into a mass; compressing the mass; and cross-linking the mass to thereby form a cross-linked particle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 17, 18)
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10. A method, comprising:
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providing an uncross-linked resin in particulate form, the uncross-linked resin being selected from the group consisting of polyamides, polyureas, polyurethanes, and methacrylates; adding a binding agent to the resin, the binding agent having a melting point below a melting point of the resin; agglomerating the resin into a mass; heating the mass to a temperature above the melting point of the binding agent and below the melting point of the resin; compressing the mass; cooling the mass to a temperature below the melting point of the binding agent; and cross-linking the mass to thereby form a cross-linked particle. - View Dependent Claims (11, 12, 13, 14, 15, 16, 19, 20, 21)
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Specification