Invention Grant
- Patent Title: Continuous process for polymerizing, curing and drying high internal phase emulsions
- Patent Title (中): 用于聚合,固化和干燥高内相乳液的连续方法
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Application No.: US09586908Application Date: 2000-06-05
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Publication No.: US06299808B1Publication Date: 2001-10-09
- Inventor: Steven W. Mork , Bruce A. Malone
- Applicant: Steven W. Mork , Bruce A. Malone
- Main IPC: B29D700
- IPC: B29D700

Abstract:
The invention comprises a fully continuous process for shaping a high internal phase emulsion (HIPE) with a polymerizable continuous phase into dry foam, comprising 1) providing a high internal phase emulsion (HIPE) comprising (a) at least 70 percent by volume of an eternal phase comprising one or more polymerizable monomer; (b) a surfactant in an amount effective to produce a high internal phase emulsion; and (c) an internal phase; 20 depositing the emulsion onto a lower moving support substrate; 3) leveling the emulsion to a desired thickness above the support substrate; 4) polymerizing the monomers by running the emulsion and the lower moving support substrate through a heating zone for a time sufficient to polymerize at least 75% of the monomer in the HIPE by the end of the heating zone; and 5) drying the polymerized HIPE in a drying zone for a time sufficient to produce a foam having greater than 50% of the internal phase removed.
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