UV ABSORBER FOR HYDROPHOBIC FIBER

• Main Authors: TAKESUTE KIYOSHI, SHIMAMURA NOBUYUKI, TOYODA JUNKO
• Format: Patent
• Language: English
• Published: 24.08.1993
• Subjects: ADHESIVES; CHEMISTRY; DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES INANY FORM; DYEING OR PRINTING TEXTILES; DYES; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; LAUNDERING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; TEXTILES; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS

PURPOSE:To obtain the subject UV absorber suitable for application to a hydrophobic fiber, excellent in UV absorbing effect, low in yellowing and exhibiting an excellent washing fastness by blending specified UV absorbers. CONSTITUTION:A UV absorber composed of a compound represented by formula I (R1 is H or OH; R2 is H, OH or CH3; R3 is H, OH or CH3) and/or a compound expressed by formula II (R4 is H or Cl; R5 is H or t-C4H9) and useful for application to a hydrophobic fiber is dispersed, e.g. by using an anionic or nonionic surfactant. A polyester- or polyamide-based fiber is subjected to exhaustion dyeing treatment at the ordinary temperature by using the obtained dispersion, thus obtaining the objective hydrophobic fiber excellent in UV absorbing effect and washing fastness and low in yellowing.