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US 12,703,803 B2Granted
Laminate including surface layer having scratch resistance and matte properties and surface coating composition
Assignee3M Innovative Properties Company
InventorsKeisuke Kato, Shinsuke Kondo, Ken Egashira, Naota Sugiyama, Yorinobu Takamatsu, Yusaku Yoshiike, Masaaki Furusawa
Life of this patent
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Abstract
Provided is a laminate including a surface layer that has excellent matte properties and can obtain good results in both the needle scratch test and the nail scratch test, and a surface coating composition that can prepare such a surface layer.
Claims15
A laminate comprising:
- a substrate;
- and
- a surface layer having scratch resistance and matte properties that includes resin beads having an average particle size of approximately 1 micrometer or greater and approximately 20 micrometers or less, and having a glass transition temperature of higher than approximately-30° C. and lower than approximately 34° C., and a binder,
- wherein the surface layer contains the resin beads of less than approximately 75% by mass based on a total weight of the surface layer, and exhibits an elastic modulus of approximately 5 MPa or greater and approximately 65 MPa or less in a region other than the resin beads of the surface layer when the elastic modulus of the surface layer is measured using an atomic force microscope.
1 more element
A surface coating composition comprising:
- resin beads having an average particle size of 1 micrometer or greater and 20 micrometers or less and a glass transition temperature of higher than-30° C. and lower than 34° C.;
- and
- a binder precursor,
- wherein the resin beads are less than 75% by mass based on solid content of 100 parts by mass of the surface coating composition, and wherein a surface layer made from the surface coating composition exhibits an elastic modulus of 5 MPa or greater and 65 MPa or less in a region other than the resin beads of the surface layer when the elastic modulus of the surface layer is measured using an atomic force microscope.
1 more element
Dependencies are inferred from the claim text.