PROCESS FOR THE PRODUCTION OF HIGH INTERNAL PHASE EMULSION FOAMS
First Claim
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1. A method for reducing the adherence of a High Internal Phase Emulsion to a belt surface comprising the steps of:
- forming a High Internal Phase Emulsion froman oil phase comprising monomer, cross-linking agent, emulsifier;
an aqueous phase;
photoinitiator;
depositing the High Internal Phase Emulsion on an extrusion belt having a surface, such that the High Internal Phase Emulsion has a top surface and a bottom surface, and the bottom surface is in contact with the extrusion belt;
exposing the High Internal Phase Emulsion to an Ultraviolet light source;
moving the High Internal Phase Emulsion to a multi-tiered curing oven;
contacting the top surface of the High Internal Phase Emulsion with a curing oven belt in the multi-tiered curing oven;
polymerizing the monomer component in the oil phase of the High Internal Phase Emulsion using a polymerization reaction that is conducted at a temperature of from about 20°
C. to about 150°
C. for a time sufficient to from a High Internal Phase Emulsion foam.
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Abstract
A method for reducing the adherence of a High Internal Phase Emulsion (HIPE) to belt surfaces in a multi-tiered curing oven.
58 Citations
20 Claims
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1. A method for reducing the adherence of a High Internal Phase Emulsion to a belt surface comprising the steps of:
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forming a High Internal Phase Emulsion from an oil phase comprising monomer, cross-linking agent, emulsifier; an aqueous phase; photoinitiator; depositing the High Internal Phase Emulsion on an extrusion belt having a surface, such that the High Internal Phase Emulsion has a top surface and a bottom surface, and the bottom surface is in contact with the extrusion belt; exposing the High Internal Phase Emulsion to an Ultraviolet light source; moving the High Internal Phase Emulsion to a multi-tiered curing oven; contacting the top surface of the High Internal Phase Emulsion with a curing oven belt in the multi-tiered curing oven; polymerizing the monomer component in the oil phase of the High Internal Phase Emulsion using a polymerization reaction that is conducted at a temperature of from about 20°
C. to about 150°
C. for a time sufficient to from a High Internal Phase Emulsion foam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for reducing the adherence of a High Internal Phase Emulsion to a belt surface comprising the steps of:
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forming a High Internal Phase Emulsion from an oil phase comprising monomer, cross-linking agent, emulsifier; an aqueous phase; photoinitiator; depositing the High Internal Phase Emulsion on an extrusion belt having a surface, such that the High Internal Phase Emulsion has a top surface and a bottom surface, and the bottom surface is in contact with the extrusion belt; exposing the High Internal Phase Emulsion to an Ultraviolet light source; moving the High Internal Phase Emulsion to a multi-tiered curing oven; transferring the High Internal Phase Emulsion from the extrusion belt to a first curing oven belt such that the top surface of the HIPE is in contact with the first curing oven belt surface; transferring the High Internal Phase Emulsion from the first curing oven belt to a second curing oven belt such that the bottom surface of the HIPE is in contact with the second curing oven belt surface; polymerizing the monomer component in the oil phase of the High Internal Phase Emulsion using a polymerization reaction that is conducted at a temperature of from about 20°
C. to about 150°
C. for a time sufficient to from a High Internal Phase Emulsion foam. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification