Patent ID: 11860472
Assignee: SHANJIN OPTOELECTRONICS (SUZHOU) CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  G | IPC C  G

Claim 0:
1. A solvent-free photocurable resin composition for a polarizing plate protective layer comprising:
an acryl-based resin comprising (1) a first structure unit derived from a first acrylate-based monomer; (2) a second structure unit derived from a second acrylate-based monomer having hydroxyl crosslinking groups; and (3) unpolymerized monomers selected from a group consisting of the first acrylate-based monomer, the second acrylate-based monomer, and combinations thereof, thereby producing the acryl-based resin with a degree of partial polymerization, wherein the first structure unit and the second structure unit were partially co-polymerized, in the absence of a photoinitiator, the first structure unit being included in 98 parts by weight and the second structure unit being included in 2 parts by weight when the first structure unit and the second structure unit were partially co-polymerized; and
an acrylate-based isocyanate crosslinking agent, wherein the acrylate-based isocyanate crosslinking agent is included in 10 parts by weight to 20 parts by weight with respect to 100 parts by weight of the acryl-based resin;
wherein the degree of partial polymerization is selected such that the solvent-free photocurable resin composition has a viscosity at 25° C. of greater than or equal to 50 cPs and less than or equal to 300 cPs while having a solid content of 99.7% or higher;
wherein the first structure unit is iso-bornyl acrylate (IBOA), the second structure unit is 4-hydroxylbutyl acrylate (4-HBA) and the acrylate-based isocyanate crosslinking agent is 2-isocyanatoethyl acrylate (AOI).