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US 5,300,587 AGranted
Oil repellent polymeric composition and use thereof, for preparing formed articles having surfaces endowed with a high stability formed articles having surfaces endowed with a high stability to solvents and a high resistance to soiling
AssigneeCentro Sviluppo Settori Impiego S.r.l.
InventorsFrancesco Mascia, Lucio Pinetti, Corrado Brichta
Life of this patent
Estimating the term…
Abstract
Oil-repellent polymeric compositions prepared by a process which comprises: a) adding at least a radical starter and at least a perfluoropolyether to at least a molten thermoplastic polymer; b) intimately mixing the resulting composition for a time which is sufficient to obtain macroradicals from the polymer; and c) cooling the final composition to room temperature.
Claims8
Oil-repellent polymeric compositions prepared by a process comprising the following steps:
- (a) adding a perfluoropolyether having a molecular weight greater than 500 and a radical initiator to a thermoplastic molten polymer selected from the group consisting of polystyrene, impact-resistant polystyrene, polyolefins, ethylene-vinylacetate copolymers, styrene-acrylonitrile copolymers, ethylene-propylene copolymers, acrylonitrile-butadiene-styrene terpolymers, and ethylene-propylene-diene terpolymers,
- (b) mixing said perfluoropolyether, radical initiator, and thermoplastic molten polymer for a time which is sufficient to form macroradicals from said thermoplastic molten polymer, and
- (c) subsequently cooling the mixture of step (b) to room temperature.
Dependencies are inferred from the claim text.