Patent ID: 11958993
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. An adhesive protective film formed of a composition comprising a (meth)acrylic binder derived from a monomer mixture comprising: an alkyl group-containing (meth)acrylic monomer; and at least one selected from among a hydroxyl group-containing (meth)acrylic monomer, a carboxyl group-containing (meth)acrylic monomer, or a polysiloxane (meth)acrylate,
wherein the monomer mixture comprises the carboxyl group-containing (meth)acrylic monomer, and the carboxyl group-containing (meth)acrylic monomer is present in an amount of about 0.1 mol % to about 5 mol % in the (meth)acrylic binder,
wherein the (meth)acrylic binder comprises a mixture of a first (meth)acrylic binder and a second (meth)acrylic binder, the second (meth)acrylic binder is a binder derived from a monomer mixture comprising a C16 to C22 linear or branched alkyl group-containing (meth)acrylic monomer and the polysiloxane (meth)acrylate, and
wherein the adhesive protective film has an initial peel strength of about 100 gf/inch or less and a peel strength decrease rate of about 50% or less, as calculated according to the following Equation 1:

Peel strength decrease rate=[|peel strength at high temperature−post-heating peel strength|/post-heating peel strength]×100,

where, in Equation 1, the post-heating peel strength is a peel strength (unit: gf/inch) of the adhesive protective film, as measured at 25° C. after leaving a specimen prepared by adhesively bonding the adhesive protective film to an adherend at 50° C. for 1,000 seconds and at 25° C. for 30 minutes, and the peel strength at high temperature is a peel strength (unit: gf/inch) of the adhesive protective film, as measured at 85° C. after leaving a specimen prepared by adhesively bonding the adhesive protective film to an adherend at 85° C. for 60 minutes.