1. A reflector comprising a laminate having a light-transmissive substrate and a light-transmissive retroreflective sheet attached to said substrate to cover the surface of said substrate, wherein said reflector has light-transmission properties as a whole, characterized in that, a plurality of depressions are formed on the backside of said substrate, and a plurality of projections are formed on a reflection surface of said retroreflective sheet.
2. A method for the production of a reflector of claim 1, comprising the steps of:
(a) providing a light-transmissive expandable substrate as said substrate,
(b) providing said retroreflective sheet and attaching said retroreflective-sheet so that it covers the surface of said expandable substrate to form said laminate,
(c) embossing said laminate to form said depressions on said backside of said substrate, and said projections on the reflection surface of said retroreflective sheet.
3. An internal-lighting display device comprising:
A: a light source,
B: a housing having a space which contains a built-in light source, and at least one opening continuous with said space, and
C: a reflector of claim 1, which is provided to cover said opening with the backside of said substrate facing said opening of said housing.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for the preparation of siloxane surface-modified hydrogel, comprising:
treating a hydrogel with Component (A), at least one amino-functional organosilicon compound, to form at least one siloxane-coated surface on the hydrogel;
wherein the hydrogel comprises (i) Component (B), at least one organic polymer comprising amine-reactive groups selected from carboxy-functional groups, sulfonic acid-functional groups, epoxy groups, or combinations thereof, the polymer being compatible with water, water-compatible alcohols, or combinations thereof and (ii) Component (C), at least one absorbable solvent selected from water, water-compatible alcohols, and combinations thereof.
2. The method according to claim 1, wherein treatment occurs in the presence of at least one suitable solvent for Component (A), the solvent being selected from hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, trimethylsilyl-terminated polydimethylsiloxanes having a viscosity of less than 1000 cP at 25\xb0 C., capryllylmethyl trisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, cyclosiloxanes, pentane, hexane, heptane, octane, cyclohexane, toluene, xylenes, ethyl acetate, isododecane, isohexadecane, isodecylneopentanoate, isononyl isononanoate, isoparaffin, isoalkane, 1-ethenyl-3-ethyl-imidazolium hexafluorophosphate, tetrapropyl-ammonium tetracyanoborate, supercritical carbon dioxide, and any combination thereof, andor wherein Component (A) is selected from polydimethyl, methyl (aminoethylaminoisobutyl) siloxane, polydimethyl, methyl (aminoethylaminopropyl) siloxane, poly(dimethyl, methylaminopropyl) siloxane, aminopropyl-terminated polydimethylsiloxane, amino ethylaminopropyl-terminated polydimethylsiloxane, and aminoethylaminoisobutyl-terminated polydimethylsiloxane, and any combination thereof.
3. (canceled)
4. The method according to claim 1, wherein Component (B) has at least 5 mol % of amine-reactive groups or alternatively, at least 10 mol % of amine-reactive groups, andor wherein Component (B) is selected from carboxy-functional organic polymers, anhydride-functional organic polymers, epoxy-functional organic polymers, polyacrylic acid, poly(meth)acrylic acid; polyacrylic acid and partially crosslinked polyacrylic acid homopolymers, ionomers, and copolymers, and any combination thereof.
5. (canceled)
6. (canceled)
7. The method according to claim 1, wherein Component (C) is selected from water, methanol, ethanol, isopropyl alcohol, ethylene glycol, polyethylene glycol, and any combination thereof.
8. The method according to claim 1, wherein the hydrogel comprises or is treated with Component (D), at least one active ingredient selected from personal care, healthcare, or agricultural active ingredients, wherein Component (D) is encapsulated within the siloxane-coated surface.
9. The method according to claim 8, wherein Component (D) is at least one active ingredient selected from Vitamin C, green tea extract, lidocaine, nicotine, niacinnamide, salicylic acid, ketoprofen, ketoconazole, urea, ammonium nitrate, potassium nitrate, sodium nitrate, potassium phosphate, and ammonium phosphate, and any combination thereof.
10. The method according to claim 1, wherein the hydrogel is treated in the presence of Component (E), at least one surfactant selected from Tergitol 15-s-3, Tergitol 15-s-40, sorbitan monooleate polyglycol-modified trimethsilylated silicate, polyglycol-modified siloxanes, polyglycol-modified silicas, ethoxylated quaternary ammonium salt solutions, cetyltrimethylammonium chloride solutions, and any combination thereof.
11. The method according to claim 1, comprising treating the siloxane-coated hydrogel with Component (F), at least one free-radical polymerizable compound and Component (G), at least one organoborane free radical initiator; wherein such treatment occurs in the presence of oxygen.
12. The method according to claim 11, wherein Component (F) is selected from methacrylate-functional polydimethylsiloxanes and resins, acrylate-functional polydimethylsiloxanes and resins, and any combination thereof andor wherein Component (G) is selected from triethylborane-propanediamine, triethylborane-butylimidazole, triethylborane-methoxypropylamine complexes, tri-n-butyl methoxypropyl amine complexes, and any combination thereof.
13. (canceled)
14. A siloxane surface-modified hydrogel prepared according to the method of claim 1.
15. A paste prepared from a hydrogel of claim 14.
16. A method for the preparation of siloxane surface-modified hydrogel microparticles, comprising:
treating hydrogel microparticles with Component (A), at least one amino-functional organosilicon compound, to form microparticles having at least one siloxane-coated surface;
wherein the microparticles comprise Component (B), at least one organic polymer comprising amine-reactive groups selected from carboxy-functional groups, sulfonic acid-functional groups, epoxy groups, or combinations thereof, the polymer being compatible with water, water-compatible alcohols, or combinations thereof; and
wherein treatment occurs in the presence of Component (C), at least one absorbable solvent selected from water, water-compatible alcohols, and combinations thereof.
17. The method according to claim 16, wherein treatment occurs in the presence of at least one suitable solvent for Component (A), the solvent being selected from hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, trimethylsilyl-terminated polydimethylsiloxanes having a viscosity of less than 1000 cP at 25\xb0 C., capryllylmethyl trisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, cyclosiloxanes, pentane, hexane, heptane, octane, cyclohexane, toluene, xylenes, ethyl acetate, isododecane, isohexadecane, isodecylneopentanoate, isononyl isononanoate, isoparaffin, isoalkane, 1-ethenyl-3-ethyl-imidazolium hexafluorophosphate, tetrapropyl-ammonium tetracyanoborate, supercritical carbon dioxide, and any combination thereof, andor wherein Component(A) is selected from polydimethyl, methyl (aminoethylaminoisobutyl) siloxane, polydimethyl, methyl (aminoethylaminopropyl) siloxane, poly(dimethyl, methylaminopropyl) siloxane, aminopropyl-terminated polydimethylsiloxane, amino ethylaminopropyl-terminated polydimethylsiloxane, and aminoethylaminoisobutyl-terminated polydimethylsiloxane, and any combination mixtures thereof.
18. (canceled)
19. The method according to claim 16, wherein Component (B) has at least 5 mol % of amine-reactive groups or alternatively, at least 10 mol % of amine-reactive groups andor wherein Component (B) is selected from carboxy-functional organic polymers, anhydride-functional organic polymers, epoxy-functional organic polymers, polyacrylic acid, poly(meth)acrylic acid; polyacrylic acid and partially crosslinked polyacrylic acid homopolymers, ionomers, and copolymers, and any combination thereof andor wherein Component (C) is selected from water, methanol, ethanol, isopropyl alcohol, ethylene glycol, polyethylene glycol, and any combination thereof.
20. (canceled)
21. (canceled)
22. (canceled)
23. The method according to claim 16, wherein the hydrogel microparticles comprise or are treated with Component (D), at least one active ingredient selected from personal care, healthcare, or agricultural active ingredients, wherein Component (D) is encapsulated within the siloxane-coated surface.
24. The method according to claim 23, wherein Component (D) is at least one active ingredient selected from Vitamin C, green tea extract, lidocaine, nicotine, niacinnamide, salicylic acid, ketoprofen, ketoconazole, urea, ammonium nitrate, potassium nitrate, sodium nitrate, potassium phosphate, and ammonium phosphate, and any combination thereof.
25. The method according to claim 16, wherein the hydrogel microparticles are treated in the presence of Component (E), at least one surfactant selected from Tergitol 15-s-3, Tergitol 15-s-40, sorbitan monooleate, polyglycol-modified trimethsilylated silicate, polyglycol-modified siloxanes, polyglycol-modified silicas, ethoxylated quaternary ammonium salt solutions, cetyltrimethylammonium chloride solutions, and any combination thereof.
26. The method according to claim 16, comprising treating the siloxane-coated hydrogel microparticles with Component (F), at least one free-radical polymerizable compound selected from methacrylate-functional polydimethylsiloxanes and resins, acrylate-functional polydimethylsiloxanes and resins, and any combination thereof, and Component (G), at least one organoborane free radical initiator selected from triethylborane-propanediamine, triethylborane-butylimidazole, triethylborane-methoxypropylamine complexes, and tri-n-butyl methoxypropyl amine complexes, and any combination thereof; wherein such treatment occurs in the presence of oxygen.
27. (canceled)
28. (canceled)
29. Hydrogel microparticles prepared according to the method of claim 15.
30. A paste prepared from hydrogel microparticles of claim 29.