Method for producing processed body having water-repellent surface, and processed body having water-repellent surface

• Main Authors: VAMOS, CHRISTIAN, NAKAI, YUKAKO, MARASFOY BART, RAZ ILAN, MIMURA YUTAKA
• Format: Patent
• Language: Chinese; English
• Published: 11.11.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The invention provides a method for manufacturing a processed body having a water-repellent surface and a processed body having a water-repellent surface. The method for manufacturing a processed body having a water-repellent surface includes a step (a) in which a member comprising a crystalline or semi-crystalline polymer is brought into contact with a solvent in a solvent contact region, and a step (b) in which the member that has been brought into contact with the solvent is removed from the solvent contact region and dried. The difference in Hildbland solubility parameters between the polymer and the solvent is less than 7.5 MPa1/2, the boiling point of the solvent is higher than the crystallization temperature (Tc) of the polymer, the temperature of the solvent when the member is brought into contact with the solvent is Tc +/-50 DEG C of the polymer and is equal to or lower than the boiling point of the solvent, and the temperature of the solvent when the member is brought into contact with the solvent i