NEW COMPOSITION AND TREATING AGENT

摘要

Provided is a composition which comprises: (A) a copolymer which comprises: (I) repeating units which are derived from a monomer having a fluoroalkyl group, and a carbon-carbon double bond, (II) repeating units which are derived from a monomer having a urethane or urea bond and a carbon-carbon double bond, but no fluorine atom, (III) repeating units which are derived from a monomer having a carbon-carbon double bond, the homopolymer of said monomer having a glass transition temperature (Tg) of 50 DEG C or less, (IV) optional repeating units which are derived from a monomer having a carbon-carbon double bond and a hydrophilic group, and (V) optional repeating units which are derived from a monomer having a chlorine atom and a carbon-carbon double bond, wherein at least one of the repeating units (IV) and the repeating units (V) are present, and (B) a film-forming auxiliary which is a diester and/or a glycol ether which dissolves or swells the copolymer and which has a solubility parameter (sp) at 25 DEG C of between 8 and 11, the composition being in the form of an aqueous dispersion of the copolymer dispersed in a medium comprising water and a nonionic, cationic or anionic emulsifier. The composition can impart high water and oil repellency by drying at room temperature (0-30 DEG C) without requiring a he at treatment step.