Patent ID: 6620890
Filing Date: 2003-09-16
Classification: C08F,C08L,C09D

Abstract:
An aqueous composition for forming a removable coating for protecting a surface of an object for a specific period of time and can be removed after providing necessary protection, containing a core/shell copolymer comprising, in the molecule thereof, 5 to 40 weight % of an acrylic copolymer A having a high glass transition temperature of 30Â° C. to 70Â° C. and 60 to 95 weight % of an acrylic copolymer B having a low glass transition temperature, each copolymer portion contains a hard-polymer-providing monomer unit and a soft-polymer-providing monomer unit in a total amount of 70 wt. % or more 5Â° C. to âˆ’30Â° C. and formed through multi-step polymerization, a vinyl monomer having an acidic functional group is contained in an amount of 0.2-2 wt. % based on the total amount of monomer.