公开(公告)号：US11859060B2

公开(公告)日：2024-01-02

申请号：US17510221

申请日：2021-10-25

申请人： GARWARE HI-TECH FILMS LIMITED

发明人： Shashikant Bhalchandra Garware ,  Monika Shashikant Garware ,  Sonja Shashikant Garware ,  Sarita Garware Ramsay

IPC分类号： C08J3/00 ,  C08J3/205 ,  B29C71/00 ,  B29C71/02 ,  C08K5/00 ,  C08K5/18 ,  B29K67/00

CPC分类号： C08J3/2053 ,  B29C71/0009 ,  B29C71/02 ,  C08K5/005 ,  C08K5/0041 ,  C08K5/18 ,  B29C2071/025 ,  B29K2067/003 ,  B29K2995/002 ,  B29K2995/0097 ,  C08J2367/02

摘要： The present disclosure relates to a process for dyeing a hydrolysis-resistant polyester film. The process comprises dyeing of a hydrolysis resistant polyester film in a dye bath comprising at least one coloring agent (dye), at least one polyhydric alcohol, and optionally at least one UV absorber to obtain a dyed film. The dyed film is subjected to quenching followed by cleaning and drying to obtain a dyed hydrolysis-resistant polyester film. The process of the present disclosure is simple, economical, improve hydrolysis resistance, and also retains the mechanical properties of the film when exposed to harsh environmental conditions.