Abstract:
Pellets or granules comprise polymeric material, for example polyetheretherketone and a fugitive material, for example sodium chloride. The granules may be used in injection moulding to produce shapes for use in medical implants and may conveniently be used to form parts which are partially porous, or to prepare porous films.
Abstract:
A foam material is provided that is formed from a body of silicone having a cellular structure formed by a plurality of interconnected voids. The voids have a relatively high volume of between about 0.06545 to about 268.0832 mm and more typically about 65.45 to about 179.5948 mm . The foam material displays unique tactile properties.
Abstract:
A method of producing silicone foam includes the step of adding a mechanical foaming agent to uncured silicone. The mechanical foaming agent is a plurality of solid bodies insoluble in the silicone. The method also includes the steps of curing the silicone and removing the mechanical foaming agent as intact solid bodies from the silicone thereby providing a silicone foam.
Abstract:
PROBLEM TO BE SOLVED: To provide a composite body using a finely-textured PTFE porous body. SOLUTION: This composite body is obtained by molding a PTFE paste article comprising ≥7 pts.wt. pore-forming agent relative to 100 pts.wt. PTFE powder, where the pore-forming agent is held in the PTFE powder by virtue of its viscous behavior, into a predetermined shape, and then removing the pore-forming agent to thereby obtain a PTFE porous article having pores, and holding the PTFE porous article in a fluororubber molded article. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a composite body using a finely-textured PTFE porous body. SOLUTION: This composite body is obtained by molding a PTFE paste article comprising ≥7 pts.wt. pore-forming agent relative to 100 pts.wt. PTFE powder, where the pore-forming agent is held in the PTFE powder by virtue of its viscous behavior, into a predetermined shape, and then removing the pore-forming agent to thereby obtain a PTFE porous article having pores, and holding the PTFE porous article in a fluororubber molded article. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
A method for preparing a porous fluoropolymer precursor includes combining a fluoropolymer and a removable additive to form a composition, the removable additive having a thermal decomposition temperature greater than a sintering temperature of the fluoropolymer, compressing the composition to form a preform, and sintering the preform to form the porous fluoropolymer precursor. A method for preparing a porous fluoropolymer includes disposing the porous fluoropolymer precursor in a removing agent, contacting the removable additive with the removing agent, and removing, by the removing agent, the removable additive from the porous fluoropolymer precursor to form the porous fluoropolymer, wherein the porous fluoropolymer comprises a plurality of pores formed by removing the removable additive.