초록 ▼

A novel plastic composition, and process of its preparation and application, are disclosed having particular utility in providing metal castings or the like with bubble-free, highly inert, plastic linings or coatings. The predominant portion of the novel composition comprises a perfluoroalkoxy side

A novel plastic composition, and process of its preparation and application, are disclosed having particular utility in providing metal castings or the like with bubble-free, highly inert, plastic linings or coatings. The predominant portion of the novel composition comprises a perfluoroalkoxy side chain modified fluorocarbon polymer but also includes, in effective minor amount, metallic tin and preferably also additional oxidation or degradation stabilizers.

대표청구항 ▼

A perfluoroalkoxy side chain modified fluorocarbon base polymer composition useful in melt-processing applications to produce bubble-free moldings, said composition including tin as an addition agent in effective amount to reduce bubbling. The method of treating perfluoroalkoxy side chain modified f

A perfluoroalkoxy side chain modified fluorocarbon base polymer composition useful in melt-processing applications to produce bubble-free moldings, said composition including tin as an addition agent in effective amount to reduce bubbling. The method of treating perfluoroalkoxy side chain modified fluorocarbon base polymers preparatory to melt-processing them to form molded shapes, which comprises compacting the “as received”polymer particulate under a pressure of at least about 8000 psi to produce a solid compact; grinding said compact to again reduce the polymer to powder form and screening it to achieve particles of uniform size which pass through a sieve of 35 mesh; and incorporating into said polymer powder at some point before melt-processing it a small but significant amount of metallic tin sufficient to inhibit bubble formation in the polymer during melt-processing.