1. A coumarin compound represented by Formula 1:
\xd8(Z)m\u2003\u2003Formula 1
wherein in Formula 1, \xd8 is an aromatic ring or heterocycle selected from the group consisting of thiophene, triazine, furan, benzene, pyrazine, pyridine, naphthalene, anthracene, thieno3,2-bthiophene, phenanthrene, fluorene, furo3,2-bfuran, terphenyl, biphenyl, bithiophene, bifuran, acridine, isoquinoline, indole, carbazole, carboline, quinoline, dibenzofuran, cinnoline, thionaphthene, 1,10-phenanthroline, phenothiazine, purine, and benzofuran rings, and combinations thereof, which may optionally have a substituent; each Z is the same or different coumarin group represented by Formula 1, with the proviso that each coumarin group may optionally have a substituent; and m is an integer of two or more; with the proviso that (i), when o contains any of triazine, furan, benzene, pyrazine, naphthalene, indole, and phenanthrene, each of said furan, naphthalene, pyrazine, indole, and phenanthrene is bonded with the same or different aromatic ring or heterocycle as identified above, said triazine is bonded with Z with m being three said bonding being directly or via any one of the above-identified thiophene, furan, benzene, pyrazine, pyridine, naphthalene, and fluorene; (ii) when \xd8 contains benzene, said benzene is bonded with Z with m being three or more; and (iii) when o contains pyridine, said pyridine is bonded with another pyridine;
wherein in Formula 2, R1 to R5 independently represent hydrogen or a substituent selected from the group consisting of aliphatic hydrocarbon groups, alicyclic hydrocarbon groups, aromatic hydrocarbon groups, heterocyclic groups, amino groups, halogen groups, and combinations thereof; R3 and R4 may form a cyclic structure together with the carbon atoms linked to R2, R3, R4 andor R5, and in this case, R2, R3, R4 andor R5 do not independently exist.
2. The coumarin compound of claim 1, which has a decomposition point of over 330\xb0 C.
3. A method for producing a coumarin compound represented by Formula 1, which comprises reacting a compound, represented by Formula 3, having \xd8 corresponding to that in Formula 1 with a compound, represented by Formula 4, having R1 to R5 corresponding to those in Formula 2:
\xd8(Z)m\u2003\u2003Formula 1
wherein in Formula 1, \xd8 is an aromatic ring or heterocycle selected from the group consisting of thiophene, triazine, furan, benzene, pyrazine, pyridine, naphthalene, anthracene, thieno3,2-bthiophene, phenanthrene, fluorene, furo3,2-bfuran, terphenyl, biphenyl, bithiophene, bifuran, acridine, isoquinoline, indole, carbazole, carboline, quinoline, dibenzofuran, cinnoline, thionaphthene, 1,10-phenanthroline, phenothiazine, purine, and benzofuran rings, and combinations thereof, which may optionally have a substituent; each Z is the same or different coumarin group represented by Formula 1, with the proviso that each coumarin group may optionally have a substituent; and m is an integer of two or more; with the proviso that (i), when \xd8 contains any of triazine, furan, benzene, pyrazine, naphthalene, indole, and phenanthrene, each of said furan, naphthalene, pyrazine, indole, and phenanthrene is bonded with the same or different aromatic ring or heterocycle as identified above, said triazine being bonded with Z with m being three said bonding being directly or via any one of the above-identified thiophene, furan, benzene, pyrazine, pyridine, naphthalene, and fluorene; (ii) when \xd8 contains benzene, said benzene is bonded with Z with m being three or more; and (iii) when o contains pyridine, said pyridine is bonded with another pyridine;
wherein in Formula 2, R1 to R5 independently represent hydrogen or a substituent selected from the group consisting of aliphatic hydrocarbon groups, alicyclic hydrocarbon groups, aromatic hydrocarbon groups, heterocyclic groups, amino groups, halogen groups, and combinations thereof; with the proviso that when o is biphenyl group, R4 is neither an alkoxy group nor a phosphoester group; R3 and R4 may form a cyclic structure together with the carbon atoms linked to R2, R3, R4 andor R5, and in this case, R2, R3, R4 andor R5 do not independently exist;
wherein in Formula 3, m is an integer as in Formula 1.
4. An organic EL element, which comprises a coumarin compound represented by Formula 1:
\xd8(Z)m\u2003\u2003Formula 1
wherein in Formula 1, \xd8 an aromatic ring or heterocycle selected from the group consisting of thiophene, triazine, furan, benzene, pyrazine, pyridine, naphthalene, anthracene, thieno3,2-bthiophene, phenanthrene, fluorene, furo3,2-bfuran, terphenyl, biphenyl, bithiophene, bifuran, acridine, isoquinoline, indole, carbazole, carboline, quinoline, dibenzofuran, cinnoline, thionaphthene, 1,10-phenanthroline, phenothiazine, purine, and benzofuran rings, and combinations thereof, which may optionally have a substituent; each Z is the same or different coumarin group represented by Formula 1, with the proviso that each coumarin group may optionally have a substituent; and m is an integer of two or more; with the proviso that (i), when \xd8 contains any of triazine, furan, benzene, pyrazine, naphthalene, indole, and phenanthrene, each of said furan, naphthalene, pyrazine, indole, and phenanthrene is bonded with the same or different aromatic ring or heterocycle as identified above, said triazine being bonded with Z with m being three said bonding being directly or via any one of the above-identified thiophene, furan, benzene, pyrazine, pyridine, naphthalene, and fluorene; (ii) when z contains benzene, said benzene is bonded with Z with m being three or more; and (iii) when o contains pyridine, said pyridine is bonded with another pyridine;
wherein in Formula 2, R1 to R5 independently represent hydrogen or a substituent selected from the group consisting of aliphatic hydrocarbon groups, alicyclic hydrocarbon groups, aromatic hydrocarbon groups, heterocyclic groups; amino groups, halogen groups, and combinations thereof; R3 and R4 may form a cyclic structure together with the carbon atoms linked to R2, R3, R4 andor R5, and in this case, R2, R3, R4 andor R5 do not independently exist.
5. A displaying panel, which comprises the organic EL element of claim 4.
6. An information displaying apparatus, which comprises the organic EL element of claim 4.
7. A luminous agent for organic EL elements, which comprises any one of the coumarin compound of claim 1 or 2.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. An inflatable seat belt apparatus comprising:
a webbing that is band shaped under normal conditions;
an inflatable bag stored in a portion of the webbing that comes into contact with an occupant, wherein the bag is positioned so that the longitudinal directions of the bag and the webbing are the same and is folded along a line which is substantially perpendicular to the longitudinal direction of the bag,
wherein the bag is configured to be inflated by a gas supplied from a gas generator thereby expanding the portion of the webbing; and
a cover that covers the portion of the webbing in which the bag is stored, wherein the cover is configured to open in an emergency due to an inflation force of the gas.
2. The apparatus of claim 1, further comprising:
a seat belt retractor that operates to allow extraction and retraction of the webbing under normal conditions and to prevent the extraction of the webbing in an emergency;
a belt guide having a hole through which the webbing passes in a slidable manner so that the webbing is guided toward the occupant under normal conditions; and
a tongue connected to the webbing and configured to engage a buckle, wherein the bag is disposed in a region of the webbing closer to the occupant than the belt guide, and
wherein the bag initially inflates in at least one of a direction toward the belt guide and a direction toward the tongue.
3. The inflatable seat belt apparatus of claim 2, wherein the bag includes a vent hole positioned between folded sections of the bag when the bag is not inflated and which becomes exposed when the bag inflates in the direction toward the belt guide so that the gas inside the bag is expelled therethrough.
4. The inflatable seat belt apparatus of claim 2, wherein the bag includes a gas inlet, through which the gas supplied from the gas generator is injected into the bag at a position close to the tongue.
5. The inflatable seat belt apparatus of claim 2, wherein the bag includes a gas inlet positioned adjacent the belt guide, for receiving gas from the gas generator.
6. An inflatable air belt comprising:
a webbing having an inflatable portion and a non-inflatable portion;
an inflatable bag positioned in the inflatable portion of the webbing;
wherein the bag is folded in a direction perpendicular to a longitudinal direction of the webbing and includes a vent hole positioned to be blocked when the bag is folded, and to be exposed when the bag is unfolded.
7. A seat belt apparatus comprising:
a belt guide having an opening through which an inflatable seat belt passes;
wherein the inflatable seat belt includes a webbing having an inflatable portion and a non-inflatable portion;
an inflatable bag positioned in the inflatable portion of the webbing;
wherein the bag is folded in a direction perpendicular to a longitudinal direction of the webbing and is positioned so that the bag does not pass through the opening;
wherein the webbing is positioned so that the inflatable portion of the webbing passes through the opening.
8. A seat belt apparatus having an EA effect for protecting an occupant of a vehicle in an emergency comprising:
a webbing having an inflatable portion enclosing an inflatable bag;
wherein the length of the inflatable portion of the webbing that inflates in the emergency varies with an inertial force of the occupant created by the occupant’s motion toward the webbing.
9. The apparatus of claim 8, further comprising a seat belt guide having an opening; wherein the inflatable portion passes through the opening, and wherein the part of the inflatable portion located on the opposite side of the opening from the occupant does not inflate.
10. The seat belt apparatus of claim 9, wherein the length of the inflatable portion of the webbing is adjusted by changing the position of the webbing relative to the seat belt guide.
11. The seat belt apparatus of claim 9, wherein the webbing and the guide are arranged so that the position of the webbing relative to the seat belt guide may be adjusted by the inertial force of the occupant against the webbing.