摘要:
Compositions formed of aqueous dispersions comprising a mixture of the following fluorinated polymers:
A) (meth)acrylic (co)polymers containing fluorine, and B) cationic ionomers of fluorinated polyurethanes based on (per)fluoropolyethers, the weight ratio A):B), calculated on the dry product, being in the range 70:30 and 30:70.
摘要:
A method for preparing a fluorochemical composition comprising a polyurethane by reacting: (A) fluorochemical oligomer of formula (I): MfmMn-Q1-T1, wherein: MfmMn represents fluorochemical oligomer comprising m units derived from fluorinated monomer and n units derived from fluorine-free monomer and wherein the fluorinated monomers and fluorine-free monomers may be the same or different; m represents a value of 2 to 40; n represents a value of 0 to 20; T1 is -OH or -NH¿2?; Q?1 and T1¿ together represent the organic residue obtained by removing a hydrogen atom from a chain transfer agent that is functionalized with T1; (B) difunctional compound capable of reacting with an isocyanate; (C) monofunctional compound capable of reacting with an isocyanate and comprising a poly(oxyalkylene) group with (D) triisocyanate. Substrates treated with fluorochemical compositions prepared according to the method, have good stain release properties, particularly for oily stains and water based stains such as wine, tea and coffee.
摘要:
The present invention provides a process for obtaining a fiber comprising the steps of:
melt extruding a mixture of a thermoplastic polymer and a hydrophilicity imparting compound A to form a plurality of filaments; applying a spin finish to said filaments; and spinning said filaments into a fiber; characterised in that said spin finish comprises a fluorochemical oil and/or water repellent.
摘要:
A moisture-permeable waterproof fabric comprising a fiber fabric coated, on at least one side thereof, with a fluorinated polyurethane resin and a low-polymerization polyurethane resin. The fabric is produced by coating at least one side thereof with a solution of both the resins, followed by coagulation, solvent removal, drying and treatment with a water repellent.
摘要:
A fluoroalkylated allylurethane represented by the following general formula:
RfROCONHR'NHCOOC n H 2n OCH 2 CH=CH 2
where Rf is a perfluoroalkyl group having 2 to 20 carbon atoms, R is a divalent organic group, R' is a diisocyanate residue, and n is an integer of 2 to 6, can undergo emulsion polymerization with at least one of a methacrylate ester, an acrylate ester and vinylidene chloride to give an effective aqueous copolymer emulsion for a water- and oil-repellent, anti-soiling processing agent.
摘要:
A composition for treating fibrous substrates such as textiles to provide oil and water repellency is provided. The composition comprises a) a terpolymer comprising randomly distributed i) units containing a fluoroaliphatic group, Rf, ii) fluorine-free hydrocarbon units, and iii) units containing silicone and b) a fluorine-containing polymer having isocyanate derived linking groups and blocked isocyanate moieties. Also provided is a method for providing oil and water repellency to a fibrous substrate.
摘要:
A moisture-permeable waterproof fabric comprising a fiber fabric coated, on at least one side thereof, with a fluorinated polyurethane resin and a low-polymerization polyurethane resin. The fabric is produced by coating at least one side thereof with a solution of both the resins, followed by coagulation, solvent removal, drying and treatment with a water repellent.