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US 2011/0213085 A1Published application
Fluorinated thermoplastic polymer additive
AssigneeSolvay Solexis S.p.A.
InventorsClaudio Adolpho Pietro Tonelli, Grazia Meroni
Life of this patent
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Abstract
The invention pertains to the use of certain fluorinated thermoplastic polymer additives for reducing the coefficient of friction of non-fluorinated polymers and to masterbatches of said additives with non-fluorinated polymers.
Claims15
A method for reducing the coefficient of friction of non-fluorinated polymers, comprising using a fluorinated thermoplastic polymer additive,
- said additive comprising (per)fluoropolyether segments and non-fluorinated hydrogenated chain segments, said non-fluorinated hydrogenated chains having at least one crystalline phase that melts at a temperature of at least 25° C., the additive being obtainable by a reaction of polycondensation, polyaddition in stages, or polyaddition of the following components:
- a) a (per)fluoropolyether having two functional end groups able to give reactions of condensation or addition with hydrogenated co-reactants;
- and
- b) a hydrogenated co-reactant containing alkylene, cycloaliphatic, aromatic chains, and having functional end groups capable of reacting with the functional groups of the (per)fluoropolyether a), to give polymers having at least one crystalline hydrogenated phase having a melting point of at least 25° C.
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A method for the preparation of masterbatches of hydrogenated resins, comprising using a fluorinated thermoplastic additive,
- said additive comprising (per)fluoropolyether segments and non-fluorinated hydrogenated chain segments, said non-fluorinated hydrogenated chains having at least one crystalline phase that melts at a temperature of at least 25° C. the additive being obtainable by a reaction of polycondensation, polyaddition in stages, or polyaddition of the following components:
- a) a (per)fluoropolyether having two functional end groups able to give reactions of condensation or addition with hydrogenated co-reactants;
- and
- b) a hydrogenated co-reactant containing alkylene, cycloaliphatic, aromatic chains, and having functional end groups capable of reacting with the functional groups of the (per)fluoropolyether a), to give polymers having at least one crystalline hydrogenated phase having a melting point of at least 25° C.
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Masterbatches of hydrogenated resins comprising one or more additives,
- said additive comprising (per)fluoropolyether segments and non-fluorinated hydrogenated chain segments, said non-hydrogenated chains having at least one crystalline phase that melts at a temperature of at least 25° C., the additive being obtainable by a reaction of polycondensation, polyaddition in stages, or polyaddition of the following components:
- a) a (per)fluoropolyether having two functional end groups able to give reactions of condensation or addition with hydrogenated co-reactants;
- and
- b) a hydrogenated co-reactant containing alkylene, cycloaliphatic, aromatic chains, and having functional end groups capable of reacting with the functional groups of the (per)fluoropolyether a), to give polymers having at least one crystalline hydrogenated phase having a melting point of at least 25° C.
1 more element
Dependencies are inferred from the claim text.