1. An angle-adjustable mounting apparatus for mounting a second object to a first object, said angle-adjustable mounting apparatus comprising:
a first mounting device to be coupled to the first object;
a second mounting device to be coupled to the second object, said second mounting device being connected pivotally to said first mounting device and being pivotable relative to said first mounting device about a first axis; and
a first pivot-control unit including a first component provided at said first mounting device and a second component provided at said second mounting device, said second component abutting against and being rotatable relative to said first component to enable said second mounting device to pivot relative to said first mounting device about the first axis, one of said first and second components being a plug component with a curved surface, and the other one of said first and second components being a socket component;
said first pivot-control unit further including a first adjusting rod coupled to said second component and operable to drive said second component so that assembly of said second component and said second mounting device pivots relative to said first component.
2. The angle-adjustable mounting apparatus as claimed in claim 1, wherein said second component is formed with a first threaded hole therethrough, said first threaded hole having a hole axis that is not parallel to the first axis, said first adjusting rod being a threaded rod which is coupled rotatably to said second mounting device for rotation about a rod axis of said first adjusting rod and which threadedly engages said first threaded hole, and
wherein rotation of said first adjusting rod relative to said second mounting device results in displacement of said first adjusting rod along said first threaded hole and pivoting of the assembly of said second component and said second mounting device relative to said first component.
3. The angle-adjustable mounting apparatus as claimed in claim 2, wherein said socket component receives rotatably said plug component and has an inner socket wall surface that abuts against said curved surface of said plug component.
4. The angle-adjustable mounting apparatus as claimed in claim 2, wherein said first mounting device includes:
a first mounting part to be coupled to the first object;
a second mounting part connected pivotally to said first mounting part and pivotable relative to said first mounting part about a second axis that is perpendicular to the first axis, said second mounting device being connected pivotally to said second mounting part; and
a second pivot-control unit including a third component provided at said first mounting part and a fourth component provided at said second mounting part, said fourth component abutting against and being rotatable relative to said third component to enable said second mounting part to pivot relative to said first mounting part about the second axis;
wherein said second pivot-control unit further includes a second adjusting rod coupled to said third component and operable to drive said third component so that assembly of said fourth component and said second mounting part pivots relative to said third component.
5. The angle-adjustable mounting apparatus as claimed in claim 4, wherein said third component is formed with a second threaded hole therethrough, said second threaded hole having a hole axis that is not parallel to the second axis, said second adjusting rod being a threaded rod which is coupled rotatably to said first mounting part for rotation about a rod axis of said second adjusting rod and which threadedly engages said second threaded hole, and
wherein rotation of said second adjusting rod relative to said first mounting part results in displacement of said third component along said second adjusting rod and pivoting of the assembly of said fourth component and said second mounting part relative to said third component.
6. The angle-adjustable mounting apparatus as claimed in claim 5, wherein one of said third and fourth components is a plug component with a curved surface, and the other one of said third and fourth components is a socket component that receives rotatably said plug component and that has an inner socket wall surface that abuts against said curved surface.
7. The angle-adjustable mounting apparatus as claimed in claim 4, wherein said second mounting device includes:
a first connection part connected pivotally to said second mounting part;
a second connection part to be connected to the second object and retained pivotally on said first connection part so as to be pivotable relative to said first connection part about a third axis perpendicular to the first and second axes; and
a third pivot-control unit including
an adjusting base provided on said second connection part and formed with a third threaded hole therethrough, said third threaded hole having a hole axis that is not parallel to the third axis, and
a third adjusting rod which is a threaded rod coupled rotatably to said first connection part for rotation about a rod axis of said third adjusting rod, said third adjusting rod threadedly engaging said third threaded hole,
wherein rotation of said third adjusting rod relative to said first connection part results in displacement of said adjusting base along said third adjusting rod and pivoting of said second connection part relative to said first connection part.
8. The angle-adjustable mounting apparatus as claimed in claim 7, wherein said second connection part is movable relative to said adjusting base on a plane perpendicular to the third axis.
9. The angle-adjustable mounting apparatus as claimed in claim 3, wherein said plug component includes a plug body and a resilient cover that covers said plug body.
10. The angle-adjustable mounting apparatus as claimed in claim 6, wherein said plug component includes a plug body and a resilient cover that covers said plug body.
11. The angle-adjustable mounting apparatus as claimed in claim 1, further comprising a spring which is sleeved on said first adjusting rod and which has two opposite ends acting on said second component and said second mounting device, respectively.
12. The angle-adjustable mounting apparatus as claimed in claim 4, further comprising a spring which is sleeved on said second adjusting rod and which has two opposite ends acting on said third component and said first mounting part, respectively.
13. The angle-adjustable mounting apparatus as claimed in claim 7, further comprising a spring which is sleeved on said third adjusting rod and which has two opposite ends acting on said adjusting base and said first connection part.
14. The angle-adjustable mounting apparatus as claimed in claim 7, further comprising a resilient unit including:
a first spring which is sleeved on said first adjusting rod and which has two opposite ends acting on said second component and said second mounting device, respectively;
a second spring which is sleeved on said second adjusting rod and which has two opposite ends acting on said third component and said first mounting part, respectively; and
a third spring which is sleeved on said third adjusting rod and which has two opposite ends acting on said adjusting base and said first connection part.
15. The angle-adjustable mounting apparatus as claimed in claim 4, further comprising a resilient first buffer disposed between said second mounting part and said second component, and a resilient second buffer disposed between said second mounting part and said third component.
16. The angle-adjustable mounting apparatus as claimed in claim 7, wherein said first adjusting rod has a first large-diameter section, a first small-diameter section which is located at a distal end of said first large-diameter section and which has a diameter smaller than that of said first large-diameter section, and a first annular slot formed in said first small-diameter section, said first small-diameter section of said first adjusting rod extending through said first connection part, said angle-adjustable mounting apparatus further comprising a first engaging ring for engaging said first annular slot in a manner that a section of said first connection part is sandwiched between said first large-diameter section and said first engaging ring.
17. The angle-adjustable mounting apparatus as claimed in claim 16, wherein said second adjusting rod has a second large-diameter section, a second small-diameter section which is located at a distal end of said second large-diameter section and which has a diameter smaller than that of said second large-diameter section, and a second annular slot formed in said second small-diameter section, said second small-diameter section of said second adjusting rod extending through said first mounting part, said angle-adjustable mounting apparatus further comprising a second engaging ring for engaging said second annular slot in a manner that a section of said first mounting part is sandwiched between said second large-diameter section and said second engaging ring.
18. The angle-adjustable mounting apparatus as claimed in claim 17, wherein said third adjusting rod has a third large-diameter section, a third small-diameter section which is located at a distal end of said third large-diameter section and which has a diameter smaller than that of said third large-diameter section, and a third annular slot formed in said third small-diameter section, said third small-diameter section of said third adjusting rod extending through said first connection part, said angle-adjustable mounting apparatus further comprising a third engaging ring for engaging said third annular slot in a manner that a section of said first connection part is sandwiched between said third large-diameter section and said third engaging ring.
19. The angle-adjustable mounting apparatus as claimed in claim 7, wherein one of said first and second connection parts has a limit slot and the other one of said first and second connection parts has a limit protrusion that cooperates with said limit slot to limit angular rotation of said second connection part relative to said first connection part.
20. The angle-adjustable mounting apparatus as claimed in claim 3, wherein said inner socket wall surface of said socket component abuts against diametrically opposite parts of said curved surface of said plug component.
21. The angle-adjustable mounting apparatus as claimed in claim 6, wherein said inner socket wall surface of said socket component abuts against diametrically opposite parts of said curved surface of said plug component.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
We claim:
1. A process for the preparation of highly functional aromatic polyisocyanates by reacting aromatic polyisocyanates, if required as a mixture with further mono- andor polyisocyanates, with addition of catalytic acidic substances and water, wherein the polyisocyanates used comprise at least one tolylene diisocyanate and the catalytic acidic substance used is at least one alkyl andor aralkyl phosphate, and the process is carried out in such a way that the water is added with a temperaturetime gradient increase from 5 to 60hour and until an isocyanate modification of the starting NCO terminal groups of from 1 to 80% is established.
2. A process as claimed in claim 1, wherein the tolylene diisocyanate is used in industrially available isomer ratios, if required as a mixture with further aromatic mono- andor polyisocyanates andor aliphatic mono- andor polyisocyanates.
3. A process as claimed in claim 1 or 2, wherein the catalytic acidic substance used is bis(2-ethylhexyl)phosphate.
4. A process as claimed in any of claims 1 to 3, wherein the water is used in the form of free water, steam, a substance releasing water of crystallization andor a water-eliminating compound.
5. A process as claimed in any of claims 1 to 4, wherein the tolylene diisocyanate or the isocyanate mixture and the catalytic acidic substances are initially taken and water is then metered in with a temperaturetime gradient increase from 9 to 40hour and to an isocyanate modification of the starting NCO terminal groups of from 8 to 60%.
6. A process as claimed in any of claims 1 to 5, wherein the tolylene diisocyanate or the isocyanate mixture or the catalytic acidic substances are initially taken, the respective other component is then metered in within from 0.01 to 2.5 hours with a temperature increase of up to 1000 and the water is then added.
7. A process as claimed in any of claims 1 to 6, wherein the total amount of catalytic acidic substances used is from 0.001 to 3.0% by weight, based on the weight of the total formulation.
8. A process as claimed in any of claims 1 to 7, wherein the total amount of water used is from 0.005 to 0.03 gg of polyisocyanate.
9. A highly functional aromatic polyisocyanate which can be prepared as claimed in any of claims 1 to 8.
10. A highly functional aromatic polyisocyanate as claimed in claim 9, containing from 15 to 95 parts by weight of the modified highly functional polyisocyanate and from 85 to 5 parts by weight of tolylene diisocyanate and, if required, monomers andor polymers of the isocyanate mixture used.
11. A highly functional aromatic polyisocyanate as claimed in claim 9 or 10, containing not more than 8 parts by weight of urea and higher molecular weight oligomers and not more than 2 parts by weight of uretdione and higher molecular weight oligomers.
12. A highly functional aromatic polyisocyanate as claimed in any of claims 9 to 11, which contains from 35 to 39% by weight of free NCO groups and has a viscosity of from 3 to 6000 mPas at 25 C., and a mean functionality of from 2.6 to 3.2, an average molecular weight of from 300 to 600 gmol and an iodine color number of not more than 10.
13. The use of a highly functional aromatic polyisocyanate as claimed in any of claims 9 to 12 for the production of polyurethane foams, in particular flexible polyurethane foams.
14. A process for the production of flexible polyurethane foams by reacting organic andor modified organic polyisocyanates (a) with, compounds (b) having hydrogen atoms reactive toward isocyanates, in the presence of water andor other blowing agents (c), catalysts (d) and, if required, further assistants and additives (e), wherein the polyisocyanates (a) contain at least one highly functional aromatic polyisocyanate as claimed in any of claims 9 to 12.
15. A flexible polyurethane foam which can be prepared as claimed in claim 14, wherein said foam has a density of from 30 to 60 kgm3 in combination with a total water content of from 2 to 8 parts by weight and an isocyanate index of from 75 to 115.
16. The use of a flexible polyurethane foam as claimed in claim 15 in the automotive industry and furniture industry.