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US 5,700,844 AGranted
Process for making a foamed polymer
AssigneeInternational Business Machines Corporation
InventorsJeffrey Curtis Hedrick, James Lupton Hedrick, Yun-Hsin Liao, Robert Dennis Miller, Da-Yuan Shih
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Abstract
The invention relates to a process for making a foamed polymer. The process involves (a) dispersing thermally degradable solid particles in polymer precursor; (b) crosslinking the polymer precursor to form a rigid, crosslinked polymer without degrading the particles; and (c) heating the polymer to degrade the particles and form the polymer foam.
Claims4
A process for making a polysiloxane foam comprising the steps of:
- (a) dispersing thermally degradable polymer particles in polysiloxane precursor;
- (b) polymerizing the polysiloxane precursor to form rigid polysiloxane without degrading the particles;
- and
- (c) heating the polysiloxane to degrade the particles without expanding the polysiloxane and form the polysiloxane foam.
1 more element
Dependencies are inferred from the claim text.