초록

Cured perfluoroelastomer articles are disclosed which have improved surface characteristics. The articles are coated with a thin durable film comprising a polysiloxane and urethane oligomer which reduces surface stickiness, while maintaining the sealing properties of the article.

대표청구항 ▼

1. A perfluoroelastomer article coated with a durable film comprising A) a mixture of polysiloxanes of formulaswherein n and m are such that said polysiloxanes each have a number average molecular weight between 500 and 5000, as measured by size exclusion chromatography employing polystyrene calibra

1. A perfluoroelastomer article coated with a durable film comprising A) a mixture of polysiloxanes of formulaswherein n and m are such that said polysiloxanes each have a number average molecular weight between 500 and 5000, as measured by size exclusion chromatography employing polystyrene calibration standards; and B) a urethane oligomer. 2. A perfluoroelastomer article of claim 1 wherein said film is of a thickness between 0.1 and 10 microns. 3. A perfluoroelastomer article of claim 2 wherein said film is of a thickness between 3 and 7 microns. 4. A perfluoroelastomer article of claim 1 wherein said urethane oligomer is based on an isocyanate of the formula