Porogen compositions, methods of making and uses
First Claim
Patent Images
1. A method of making a porous material, the method comprising the steps of:
- a) coating porogens with a matrix material to form a matrix material-coated porogen mixture, the porogens comprising a shell material and a core material, wherein the core material is a sugar and the shell material is polyethylene glycol, and further wherein the shell material has a melting temperature that is lower than a melting temperature of the core material;
b) treating the matrix material-coated porogen mixture to form a porogen scaffold comprising fused porogens and stabilized matrix material; and
c) removing the porogen scaffold from the stabilized matrix material, wherein porogen scaffold removal results in a porous material, the porous material comprising a matrix defining an array of interconnected pores.
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Abstract
Provided are porogen compositions and methods of using such porogen compositions in the manufacture of porous materials, for example, porous silicone elastomers. The porogens generally include comprising a core material and shell material different from the core material. The porogens can be used to form a scaffold for making a resulting porous elastomer when the scaffold is removed.
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Citations
6 Claims
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1. A method of making a porous material, the method comprising the steps of:
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a) coating porogens with a matrix material to form a matrix material-coated porogen mixture, the porogens comprising a shell material and a core material, wherein the core material is a sugar and the shell material is polyethylene glycol, and further wherein the shell material has a melting temperature that is lower than a melting temperature of the core material; b) treating the matrix material-coated porogen mixture to form a porogen scaffold comprising fused porogens and stabilized matrix material; and c) removing the porogen scaffold from the stabilized matrix material, wherein porogen scaffold removal results in a porous material, the porous material comprising a matrix defining an array of interconnected pores. - View Dependent Claims (2, 3, 4)
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5. A method of making a porous material, the method comprising the steps of:
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a) coating porogens with a matrix material to form a matrix material-coated porogen mixture, the porogens comprising a shell material and a core material, wherein the shell material has a melting temperature that is lower than a melting temperature of the core material; b) treating the matrix material-coated porogen mixture to form a porogen scaffold comprising fused porogens and stabilized matrix material; and c) removing the porogen scaffold from the stabilized matrix material, wherein porogen scaffold removal results in a porous material, the porous material comprising a matrix defining an array of interconnected pores; wherein the porous material is a porous silicone elastomer. - View Dependent Claims (6)
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Specification