1. An air-guiding device for a rear region of a vehicle with at least one air-guiding element that is shiftable between a retracted inoperative position and an extended operating position, a gap being forming between the air-guiding element and the mounting element when the air-guiding element, and a closure device for closing the gap, the closure device, comprising:
a multi-layered, flexible sheetlike structure having at least one front outer, flexible layer and a rear outer, flexible layer; a stiff clamping element disposed and configured for stretching the front outer layer when the guiding element is in the extended operating position, the front outer layer; and a flexible clamping element that stretches the rear outer layer when the guiding element is in the extended operating position.
2. The air-guiding device of claim 1, wherein the stiff clamping element is a clamping bow, with lateral limbs and a connecting limb extending between the lateral limbs, the lateral limbs of the clamping bow having free ends articulated on the mounting element, and the connecting limb being connected to the front outer layer.
3. The air-guiding device of claim 2, wherein the front outer layer is connected to the air-guiding element and to the mounting element.
4. The air-guiding device of claim 1, wherein the flexible clamping element is connected to the rear outer layer.
5. The air-guiding device of claim 1, wherein the rear outer layer is connected to the air-guiding element.
6. The air-guiding device of claim 5, wherein the rear outer layer further is connected to the mounting element or to the front outer layer.
7. The air-guiding device of claim 1, wherein the front outer layer extends transversely between covering elements for subassemblies of a shifting device of the air-guiding element, and the closure device further having stiff closure elements positioned laterally on the outside next to the covering elements.
8. The air-guiding device of claim 7, wherein each of the stiff closure elements has first and second stiff closure plates articulated to each other and positioned laterally outside the respective covering element, the first closure plate being articulated to the mounting element and the second closure plate being articulated to the air-guiding element.
9. The air-guiding device of claim 7, wherein the rear outer layer extends transversely over the region of the stiff closure elements.
10. The air-guiding device of claim 9, wherein the rear outer layer is connected to the stiff closure elements.
11. The air-guiding device of claim 1, wherein the front outer layer and the rear outer layer are elastic.
12. The air-guiding device of claim 11, wherein the front outer layer and the rear outer layer are formed from an elastic knitted fabric.
13. The air-guiding device of claim 1, wherein the mounting element has air-passage openings and spacers positioned in proximity to the air passage openings, wherein, in the retracted inoperative position, the front outer layer bears against the spacers, with a defined gap being formed between the layer and the air passage openings.
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. A polydioxaborine.
2. The polydioxaborine of claim 1 comprising a dioxaborine group of the formula (I):
47
wherein R1, R2 R3, L1 and L2 are each independently selected from the group consisting of hydrogen, linking atom, electron withdrawing group, and electron donating group.
3. The polydioxaborine of claim 2,
wherein L1 and L2 are each independently selected from the group consisting of hydrogen, linking atom, halogen, C1-C6 alkyl, C1-C6 alkoxy, C1-C6 thioalkyl, nitrile, and a bridging ligand formed by L1 and L2 together;
wherein R1 and R3 are each independently selected from the group consisting of hydrogen, linking atom, carboxylate, carboxylic acid, aldehyde, amide, epoxy, acid chloride, anhydride, nitrile, sulfonate, sulfonic acid, phosphonate, nitrate, nitro, C1-C18 alkoxy, C1-C18 alkyl, C1-C18 fluoroalkyl, hydroxyl, C12-C20 diarylamino, C2-C10 dialkylamino, C1-C6 alkylhalide, C1-C6 nitroalkyl, C1-C6 alkanoic acid, C1-C6 alkylamide, C6-C10 aryl, C6-C10 aryloxy, C7-C20 alkylaryl, and C7-C20 alkylaryloxy; and
wherein R2 is selected from the group consisting of hydrogen, linking atom, carboxylate, carboxylic acid, aldehyde, amide, epoxy, acid chloride, anhydride, nitrile, sulfonate, sulfonic acid, phosphonate, nitrate, nitro, C1-C18 alkoxy, C1-C18 alkyl, C1-C18 fluoroalkyl, C12-C20 diarylamino, C1-C6 alkylhalide, C1-C6 nitroalkyl, C1-C6 alkanoic acid, C1-C6 alkylamide, C7-C20 alkylaryl, and C7-C20 alkylaryloxy.
4. The polydioxaborine of claim 2, wherein the linking atom is selected from the group consisting of carbon atom, nitrogen atom, oxygen atom, and sulfur atom.
5. The polydioxaborine of claim 2, wherein L1 and L2 are each independently a halogen selected from the group consisting of fluoro, chloro, and bromo; R1 is a linking atom, R2 is hydrogen, and R3 is selected from the group consisting of hydrogen, C1-C18 alkyl, C1-C18 alkoxy, C6-C10 aryl, C6-C10 aryloxy, C7-C20 alkylaryl, and C7-C20 alkylaryloxy.
6. The polydioxaborine of claim 2, wherein only one of R1, R2, R3, L1 and L2 is a linking atom.
7. The polydioxaborine of claim 2, wherein two of R1, R2 R3, L1 and L2 are linking atoms.
8. A dioxaborine monomer.
9. The dioxaborine monomer of claim 8, wherein the monomer comprises:
at least one polymerizable group that can be polymerized by a chain polymerization technique selected from the group consisting of radical polymerization, cationic polymerization, and transition metal catalysis; and
a dioxaborine group of the formula (I),
48
wherein R1, R2 R3, L1 and L2 are each independently selected from the group consisting of hydrogen, linking atom, electron withdrawing group, and electron donating group.
10. The dioxaborine monomer of claim 9, wherein the polymerizable group is selected from the group consisting of acrylate, methacrylate, acrylamide, alkene, alkyne, styrene, cyclic N-phenyliminocarbonate, cyclic acid anhydride, sultam, lactam, lactone, and epoxy.
11. The dioxaborine monomer of claim 10, wherein the polymerizable group is a carbocyclic alkene.
12. The dioxaborine monomer of claim 11, wherein the carbocyclic alkene is formed by R1 and R2 or by R2 and R3.
13. The dioxaborine monomer of claim 11, wherein the carbocyclic alkene is selected from the group consisting of norbomadienyl, cyclopropenyl, cyclobutenyl, cyclopentenyl, and norbornenyl.
14. The dioxaborine monomer of claim 9, wherein L1 and L2 are each independently selected from the group consisting of hydrogen, linking atom, halogen, C1-C6 alkyl, C1-C6 alkoxy, C1-C6 thioalkyl, nitrile, and a bridging ligand formed by L1 and L2 together;
wherein R1 and R3 are each independently selected from the group consisting of hydrogen, linking atom, carboxylate, carboxylic acid, aldehyde, amide, epoxy, acid chloride, anhydride, nitrile, sulfonate, sulfonic acid, phosphonate, nitrate, nitro, C1-C18 alkoxy, C1-C18 alkyl, C1-C18 fluoroalkyl, hydroxyl, C12-C20 diarylamino, C2-C10 dialkylamino, C1-C6 alkylhalide, C1-C6 nitroalkyl, C1-C6 alkanoic acid, C1-C6 alkylamide, C6-C10 aryl, C7-C20 alkylaryl, and C7-C20 alkylaryloxy; and
wherein R2 is selected from the group consisting of hydrogen, linking atom, carboxylate, carboxylic acid, aldehyde, amide, epoxy, acid chloride, anhydride, nitrile, sulfonate, sulfonic acid, phosphonate, nitrate, nitro, C1-C18 alkoxy, C1-C18 alkyl, C1-C18 fluoroalkyl, C12-C20 diarylamino, C1-C6 alkylhalide, C1-C6 nitroalkyl, C1-C6 alkanoic acid, C1-C6 alkylamide, C7-C20 alkylaryl, and C7-C20 alkylaryloxy.
15. The dioxaborine monomer of claim 9, wherein L1 and L2 are each independently a halogen selected from the group consisting of fluoro, chloro, and bromo; R1 is a linking atom, R2 is hydrogen, and R3 is selected from the group consisting of hydrogen, C1-C18 alkyl, C1-C18 alkoxy, C6-C10 aryl, C6-C10 aryloxy, C7-C20 alkylaryl, and C7-C20 alkylaryloxy.
16. The dioxaborine monomer of claim 9, wherein the linking atom is selected from the group consisting of carbon atom, nitrogen atom, oxygen atom, and sulfur atom.
17. The dioxaborine monomer of claim 9, wherein the polymerizable group is acrylate or methacrylate, L1 and L2 are each independently a halogen selected from the group consisting of fluoro, chloro, and bromo; R1 is a 4-phenoxy group having an oxygen atom that is adjacent to the carbonyl of the acrylate or methacrylate, R2 is hydrogen, and R3 is selected from the group consisting of C6-C10 aryl, C6-C10 aryloxy, C7-C20 alkylaryl, and C7-C20 alkylaryloxy.
18. The dioxaborine monomer of claim 8, wherein the monomer comprises:
a first reactive group and a second reactive group, wherein the first reactive group and the second reactive group are each independently selected from the group consisting of epoxy, ester, phenol, acid chloride, carbamoyl chloride, sulfonyl chloride, hydrazide, acid anhydride, isothiocyanate, and isocyanate; and
a dioxaborine group of the formula (I),
49
wherein R1, R2 R3, L1 and L2 are each independently selected from the group consisting of hydrogen, linking atom, electron withdrawing group, electron donating group, the first functional group, and the second functional group.
19. The dioxaborine monomer of claim 18, wherein R1 is the first reactive group and R3 is the second reactive group.
20. The dioxaborine monomer of claim 18, wherein R1 and R3 each independently represent a linking atom.
21. A method for making a polydioxaborine, comprising polymerizing a dioxaborine monomer.
22. The method of claim 21, comprising copolymerizing the dioxaborine monomer with a second monomer.
23. The method of claim 21, wherein the dioxaborine monomer is the dioxaborine monomer of claim 9.
24. The method of claim 21, wherein the dioxaborine monomer is the dioxaborine monomer of claim 18.