| abstract |
The present invention provides a liquid repellent composition capable of obtaining a processed article with excellent liquid repellency, excellent stability, and having no problems such as odors derived from ammonia or organic amines, a method for producing the same, and a method for producing a greaseproof paper. A liquid repellent composition comprising a copolymer (A), an alkali metal ion and an aqueous medium. The copolymer (A) has R F -QXC (O) C (R) = CH 2 (R F : carbon number 4). Perfluoroalkyl group of ~ 6, Q: a divalent hydrocarbon group without a fluorine atom, X: -O- or NH-, R: a hydrogen atom, a methyl group, or a chlorine atom) (a) is the main constituent unit And the constituent unit mainly composed of the monomer (b) having an anionic group; the mass average molecular weight of the copolymer (A) is 84000 or less; at least part of the counter ion of the anionic group is an alkali metal ion; relative to the anionic group, The molar ratio of the alkali metal ion in the liquid repellent composition is 0.6 to 1.29. |