Filled polyvinyl butyral sheeting for decorative laminated glass and a process for making same
View Patent ↗The present invention is a decorative interlayer, or a laminate obtained therefrom, wherein the aesthetic qualities can be matched to solid surface materials used in such applications as countertops, for example. The interlayers of the present invention comprise at least one composite filler material obtained from ground solid surface materials.
1. A laminate comprising at least one decorative interlayer, wherein the decorative interlayer comprises a thermoplastic resin having blended therewith at least one composite filler; said at least one composite filler comprising filler particles wherein about 65 wt % of the filler particles pass through a number 12 U.S. standard sieve, wherein the decorative interlayer: (1) has a haze of from about 20 to about 100 percent (2) transmits from about 10 to less than about 90 percent of incident light, and (3) has clarity of from about 1 to 80 percent, and wherein the at least one filler consists essentially of a composite material obtained from a composition comprising a mineral filler interspersed in a thermoset polymer matrix; said laminate having two or more attributes of a standard safety glass laminate, said attributes selected from the group consisting of a compressive shear strength of at least 1800N/cm 2 ; a tensile creep of at least 1.31; a stiffness of at least 1903 psi; a tensile strength of at least 2412 psi; and a pummel adhesion rating of at least 8.
2. The laminate of claim 1 wherein the interlayer comprises from about 1 wt % to about 20 wt % of the at least one composite filler.
3. The laminate of claim 1 wherein the mineral filler is selected from minerals in the group consisting of: CaCO 3 (calcium carbonate), silica, alumina, and oxides.
4. The laminate of claim 3 wherein the thermoset polymer matrix is formed from a polymer selected from polymers in the group consisting of: acrylic resins; polyester resins; and epoxy resins.
5. The laminate of claim 4 wherein the thermoset polymer matrix is formed from an alkyl acrylate comprising an alkyl group having from 1 to 6 carbon atoms.
6. The laminate of claim 5 wherein the thermoset polymer matrix is formed from methyl methacrylate.
7. The laminate of claim 1 wherein the laminate comprises at least one sheet of glass.
8. The laminate of claim 7 wherein the laminate further comprises at least one additional polymeric interlayer that is a non-decorative interlayer material.
9. The laminate of claim 1 wherein the laminate comprises multiple layers of the decorative interlayer.
10. An article comprising the laminate of claim 1 .
11. The article of claim 10 wherein the article is a cabinet door, a tabletop, a table cover, a countertop, an entry door, a door panel, a shower door, floor tiles, ceiling tiles, a stair tread, wall tiles, a wall backsplash, an appliance door, an appliance cover, a room divider, shelving, a cabinet.
12. The laminate of claim 1 wherein the thermoset polymer matrix is formed from a polymer selected from polymers in the group consisting of: acrylic resins; polyester resins; and epoxy resins.
13. The laminate of claim 3 wherein the mineral filler comprises titanium oxide.
14. The laminate of claim 1 , wherein the thermoplastic resin is selected from the group consisting of a polyurethane polymer, an ethylene/vinyl acetate copolymer, a polyester polymer, a polyvinyl butyral polymer, an ethylene acid copolymer, a salt of an ethylene acid copolymer, a copolymer comprising an acid derivative.
15. The laminate of claim 14 , wherein the thermoplastic resin comprises a plasticized polyvinyl butyral polymer.
16. A process for preparing a decorative laminate comprising the steps: (1) blending a thermoplastic resin with at least one composite filler; (2) extruding the resin/composite filler blend as a sheet or film suitable for use as an interlayer; and (3) laminating the interlayer with at least one other transparent material, the composite filler comprising filler particles wherein about 65 wt % of the filler particles pass through a number 12 U.S. standard sieve, and wherein the interlayer: (i) has a haze from about 20 to about 100 percent (ii) transmits from about 10 to less than 90 percent of incident light, and (iii) has clarity of from about 1 to 80 percent, and wherein the at least one filler consists essentially of a composite material obtained from a composition comprising a mineral filler interspersed in a thermoset polymer matrix;
said laminate having two or more attributes of a standard safety glass laminate, said attributes selected from the group consisting of a compressive shear strength of at least 1800N/cm 2 ; a tensile creep of at least 1.31; a stiffness of at least 1903 psi; a tensile strength of at least 2412 psi; and a pummel adhesion rating of at least 8.