SPHERONIZED POLYMER PARTICLES
First Claim
Patent Images
1. A method of producing a spheroid polymer particle, comprising:
- a. providing a mixture comprising a liquid medium and a non-spheroid polymer particle comprising one or more secondary components;
b. heating the mixture above the glass transition temperature or the melting temperature of the polymer; and
c. cooling the mixture to below the glass transition temperature or melting temperature of the polymer, thereby producing a spheroid polymer particle.
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Abstract
Disclosed are methods for producing spheroid polymer particles from non-spheroid particles by heating the non-spheroid particles in a liquid medium.
110 Citations
25 Claims
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1. A method of producing a spheroid polymer particle, comprising:
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a. providing a mixture comprising a liquid medium and a non-spheroid polymer particle comprising one or more secondary components;
b. heating the mixture above the glass transition temperature or the melting temperature of the polymer; and
c. cooling the mixture to below the glass transition temperature or melting temperature of the polymer, thereby producing a spheroid polymer particle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of producing a spheroid polymer particle, comprising:
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a. providing a mixture comprising a liquid medium and a non-spheroid polymer particle;
b. heating the mixture above the glass transition temperature or the melting temperature of the polymer;
c. cooling the mixture to below the glass transition temperature or melting temperature of the polymer, thereby producing a spheroid polymer particle; and
d. attaching a secondary component to the surface of the spheroid polymer particle. - View Dependent Claims (13)
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14. A method of producing a low-residual-monomer polymer particle, comprising:
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a. providing a mixture comprising a high-residual-monomer polymer particle having an initial residual monomer content and a liquid medium;
b. heating the mixture above the glass transition temperature or the melting temperature of the polymer; and
c. cooling the mixture to below the glass transition temperature or melting temperature of the polymer, thereby producing the low-residual-monomer polymer particle a low residual monomer content that is less than the initial residual monomer content. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification