Dense star polymer conjugates
First Claim
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1. A dense star polymer conjugate which comprises at least one dense star polymer of at least generation 3.0 associated with at least one unit of at least one carried material, other than a dye or dye moiety, with the proviso that the carried material maintains its effectiveness in the conjugate.
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Abstract
Dense star polymer conjugates which are composed of at least one dendrimer in association with at least one unit of a carried agricultural, pharmaceutical, or other material have been prepared. These conjugates have particularly advantageous properties due to the unique characteristics of the dendrimer.
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Citations
114 Claims
- 1. A dense star polymer conjugate which comprises at least one dense star polymer of at least generation 3.0 associated with at least one unit of at least one carried material, other than a dye or dye moiety, with the proviso that the carried material maintains its effectiveness in the conjugate.
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26. A dense star polymer conjugate of the formula:
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space="preserve" listing-type="equation">(P).sub.x *(M).sub.y (I)wherein each P represents a dendrimer of at least generation 3.0; x represents an integer of 1 or greater; each M represents a unit of a carried material, other than a dye or dye moiety, said carried material can be the same carried material or a different carried material, with the proviso that the carried material maintains its effectiveness in the conjugate; y represents an integer of 1 or greater; and * indicates that the carried material is associated with the dendrimer. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 56, 71, 114)
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- 44. A process for preparing
- space="preserve" listing-type="equation">(P).sub.x *(M).sub.y (I)
wherein each P represents a dendrimer of at least generation 3.0; x represents an integer of 1 or greater; each M represents a unit of a carried material, other than a dye or dye moiety, said carried material can be the same carried material or a different carried material, with the proviso that the carried material maintains its effectiveness in the conjugate; y represents an integer of 1 or greater; and * indicates that the carried material is associated with the dendrimer, which comprises reacting P with M, optionally in a suitable solvent, at a temperature which facilitates the association of the carried material (M) with the dendrimer (P). - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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57. A process for preparing a polyethyleneimine which comprises reacting a polyethyleneiminemethane sulfonamide with hydrochloric acid.
- 58. A process for purifying a dendrimer of at least generation 3.0 having a solvent present which comprises removing the solvent by ultrafiltration using a membrane.
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63. A method for preparing an anhydrous dendrimer polyethylenimine of at least generation 3.0 which comprises the steps of:
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(a) acid cleavage of dendrimer polyethylenimine methane sulfonamides; (b) recovery of a product from step (a) by removal of the solvent and excess acid by distillation; (c) neutralizing the product of step (b); (d) dissolving the neutralized product obtained in step (c) by adding a solvent selected from the group toluene, benzene, xylene or mesitylene; and (e) removal of the solvent by azeotropic distillation. - View Dependent Claims (64, 65, 66)
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67. A method for preparing an anhydrous dendrimer polyethylenimine of at least generation 3.0 which comprises dissolving the dendrimer polyethylenimine in a solvent selected from the group toluene, benzene, xylene or mesitylene and removing the solvent by azeotropic distillation.
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68. A solvent soluble dense star polymer conjugate which comprises at least one dense star polymer of at least generation 3.0 and at least one carried material, other than a dye or dye moiety, which is attached to or linked to the surface of the dense star polymer or encapsulated within the interior of the dense star polymer by means of covalent bonding, hydrogen bonding, adsorption, absorption, metallic bonding, van der Waals forces, ionic bonding, coulombic forces, hydrophobic or hydrophilic forces, or any combination thereof,
with the proviso that the carried material maintains its effectiveness in the conjugate.
- 72. A dense star polymer conjugate which comprises at least one dense star polymer of at least generation 3.0 associated with at least one unit of at least one carried material selected from the group consisting of a signal generator, a signal reflector, a signal absorber, a fragrance, and chelator, with the proviso that the carried material maintains its effectiveness as a signal generator, signal reflector, signal absorber, fragrance or chelator, in the conjugate.
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77. A dense star polymer conjugate of the formula:
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space="preserve" listing-type="equation">(P).sub.x *(M).sub.y (I)wherein each P represents a dendrimer of at least generation 3.0; x represents an integer of 1 or greater; each M represents a unit of a carried material selected from the group consisting of a signal generator, a signal reflector, a signal absorber, a fragrance, and chelator, said carried material can be the same carried material or a different carried material, with the proviso that the carried material maintains its effectiveness as a signal generator, signal reflector, signal absorber, fragrance or chelator, in the conjugate; y represents an integer of 1 or greater; and * indicates that the carried material is associated with the dendrimer. - View Dependent Claims (78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111)
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- 112. A process for preparing
- space="preserve" listing-type="equation">(P).sub.x *(M).sub.y (I)
wherein each P represents a dendrimer of at least generation 3.0; x represents an integer of 1 or greater; each M represents a unit of a carried material selected from the group consisting of a signal generator, a signal reflector, a signal absorber, a fragrance, and chelator, said carried material can be the same carried material or a different carried material, with the proviso that the carried material maintains its effectiveness as a signal generator, signal reflector, signal absorber, fragrance or chelator, in the conjugate; y represents an integer of 1 or greater; and * indicates that the carried material is associated with the dendrimer, which comprises reacting P with M, optionally in a suitable solvent, at a temperature which facilitates the association of the carried material (M) with the dendrimer (P).
Specification