Glittering resin composition and decorated sheet
View Patent ↗The invention provides a glittering resin composition which includes: a polycarbonate resin that contains structural units derived from a dihydroxy compound having the portion represented by the following general formula (1) as a part of the structure thereof; and glittering particles in an amount of 0.1 parts by weight or more and 10 parts by weight or less per 100 parts by weight of the polycarbonate resin, wherein the glittering particles are inorganic particles (excluding metal particles) coated with a metal or a metal oxide or are metal particles: provided that a case where the portion represented by general formula (1) is a part of —CH 2 —O—H is excluded.
1. A glittering resin composition, comprising:
a polycarbonate resin consisting of structural units derived:
(I) from a dihydroxy compound represented by formula (2)
and
(II) from at least one alicyclic dihydroxy compound; and
glittering particles in an amount of 0.1 parts by weight or more and 10 parts by weight or less per 100 parts by weight of the polycarbonate resin,
wherein:
the polycarbonate resin does not comprise structural units derived from an aromatic dihydroxy compound,
a content of the structural unit derived from a dihydroxy compound represented by formula (2) is from 30% by mole to 90% by mole,
a retention of a weight-average molecular weight of the glittering resin composition is 90% or more, relative to a weight-average molecular weight of the polycarbonate resin consisting of structural units derived (I) from a dihydroxy compound represented by formula (2) and (II) from at least one alicyclic dihydroxy compound before the glittering particles are added thereto,
the glittering particles have an average particle diameter of from 20 μm to 100 μm and an average thickness of from 1 μm to 10 μm,
the glittering particles are (i) inorganic particles other than metal particles, (ii) inorganic particles coated with a metal or a metal oxide, or (iii) metal particles,
said (i) inorganic particles other than metal particles are at least one member selected from the group consisting of glass flakes, alumina flakes, silica flakes and mica flakes,
said (iii) metal particles are at least one member selected from the group consisting of silver flakes, nickel flakes, gold flakes, titanium flakes and aluminum flakes,
the polycarbonate resin has a glass transition temperature (Tg) of 80° C. or higher but lower than 145° C., and
a reduced viscosity of the polycarbonate resin is 0.30 to 1.20 dL/g.
2. The glittering resin composition according to claim 1 , wherein the polycarbonate resin has a glass transition temperature (Tg) of 90° C. or higher but lower than 145° C.
3. A molded object, which is obtained by injection-molding the glittering resin composition according to claim 1 .
4. A decorated sheet, comprising a layer A and a layer B, wherein:
the layer A is a resin layer that has visible-light transmission properties and a thickness of from 10 μm to 120 μm; and
the layer B is a resin layer that comprises a glittering resin composition and has a thickness of from 30 μm to 150 μm, wherein the glittering resin composition comprises:
a polvcarbonate resin comprising structural units derived:
(I) from a dihydroxy compound represented by formula (2)
and
(II) from at least one alicyclic dihydroxy compound; and
glittering particles in an amount of 0.1 parts by weight or more and 10 parts by weight or less per 100 parts by weight of the polycarbonate resin,
wherein:
the polycarbonate resin does not comprise structural units derived from an aromatic dihydroxy compound,
a content of the structural unit derived from a dihydroxy compound represented by formula (2) is from 30% by mole to 90% by mole,
a retention of a weight-average molecular weight of the glittering resin composition is 90% or more, relative to a weight-average molecular weight of the polycarbonate resin that comprises structural units derived (I) from a dihydroxy compound represented by formula (2) and (II) from at least one alicyclic dihydroxy compound before the glittering particles are added thereto,
the glittering particles have an average particle diameter of from 20 μm to 100 μm and an average thickness of from 1 μm to 10 μm,
the glittering particles are (i) inorganic particles other than metal particles, (ii) inorganic particles coated with a metal or a metal oxide, or (iii) metal particles,
said (i) inorganic particles other than metal particles are at least one member selected from the group consisting of glass flakes, alumina flakes, silica flakes and mica flakes,
said (iii) metal particles are at least one member selected from the group consisting of silver flakes, nickel flakes, gold flakes, titanium flakes and aluminum flakes,
the polycarbonate resin has a glass transition temperature (Tg) of 80° C. or higher but lower than 145° C., and
a reduced viscosity of the polycarbonate resin is 0.30 to 1.20 dL/g.
5. The decorated sheet according to claim 4 , further comprising a layer C, wherein
the layers A, B, and C are in this order and together have a total thickness in a range of from 75 μm to 300 μm, and
the layer C is a resin layer that comprises a resin composition containing a thermoplastic resin and a colorant and has a thickness of from 45 μm to 260 μm.
6. A resin sheet-covered metal laminate, which is obtained by laminating the decorated sheet according to claim 4 onto a metal plate.
7. An entrance door, comprising:
the resin sheet-covered metal laminate according to claim 6 .
8. A building material, comprising:
the resin sheet-covered metal laminate according to claim 6 .
9. A unit bath member, comprising:
the resin sheet-covered metal laminate according to claim 6 .
10. A steel furniture member, comprising:
the resin sheet-covered metal laminate according to claim 6 .
11. A housing for an electrical/electronic appliance, comprising:
the resin sheet-covered metal laminate according to claim 6 .
12. An automotive interior material, comprising:
the resin sheet-covered metal laminate according to claim 6 .
13. The glittering resin composition according to claim 1 , wherein a content of the structural units derived from a dihydroxy compound represented by formula (2) as part of the structure thereof is from 50% by mole to 80% by mole.
14. The glittering resin composition according to claim 1 , wherein the structural units derived from a dihydroxy compound represented by formula (2) are units derived from at least one of isosorbide, isomannide and isoidide.
15. The glittering resin composition according to claim 1 , wherein the polycarbonate resin has a glass transition temperature (Tg) of 100° C. or higher but lower than 145° C.
16. The decorated sheet according to claim 4 , wherein the layer A has a thickness of from 50 μm to 105 μm and the layer B has a thickness of from 50 μm to 130 μm.
17. The decorated sheet according to claim 4 , wherein the glittering resin composition of the layer B comprises glittering particles in an amount of from 0.5 parts by weight to 5 parts by weight per 100 parts by weight of the polycarbonate resin.
18. The glittering resin composition according to claim 1 , wherein the glittering resin composition of the layer B comprises glittering particles in an amount of from 0.5 parts by weight to 5 parts by weight per 100 parts by weight of the polycarbonate resin.
19. The decorated sheet according to claim 4 , wherein the polycarbonate resin has a glass transition temperature (Tg) of 90° C. or higher but lower than 145° C.
20. The decorated sheet according to claim 4 , wherein the decorated sheet is obtained by injection-molding of the glittering resin composition.