1. A furanone endcapped polymer comprising a polymer comprising one or more monomers selected from the group consisting of lactide, glycolide, trimethylene carbonate, tetramethylene carbonate, dimethyl trimethylene carbonate, dioxanone, dioxepanone, caprolactone, valerolactone, and combinations thereof, endcapped with a furanone of the formula:
wherein R2, R3 and R4 are independently or all H, halogen, hydroxyl, or acetate,
\u201c\u2550\u201d represents a double bond, and
X is a moiety selected from the group consisting of H, halogen, formyl, carboxyl, cyano, ester, amide, alkyl, alkoxy, oxoalkyl, alkenyl, alkynyl, aryl or arylalkyl, which moiety may optionally be substituted with one or more substituents or interrupted by one or more hetero atoms.
2. The furanone endcapped polymer of claim 1, wherein the furanone is of the formula:
wherein R1, R2, R3, R4 and R5 are independently or all H, halogen, hydroxyl, or acetate.
3. An article comprising the furanone endcapped polymer of claim 1.
4. The article of claim 3, wherein the article is selected from the group consisting of textiles, packaging materials and medical devices.
5. A coating comprising the furanone endcapped polymer of claim 1.
6. A composition comprising the furanone endcapped polymer of claim 1 in combination with a component selected from the group consisting of absorbable polymers, non-absorbable polymers, fatty acid components, and combinations thereof.
7. An article comprising the composition of claim 6.
8. The article of claim 7, wherein the article is selected from the group consisting of textiles, packaging materials and medical devices.
9. A coating comprising the composition of claim 6.
10. A method comprising:
endcapping one or more polymers comprising one or more monomers selected from the group consisting of lactide, glycolide, trimethylene carbonate, tetramethylene carbonate, dimethyl trimethylene carbonate, dioxanone, dioxepanone, caprolactone, valerolactone, and combinations thereof with a furanone of the formula:
wherein R2, R3 and R4 are independently or all H, halogen, hydroxyl, or acetate,
\u201c\u2550\u201d represents a double bond, and
X is a moiety selected from the group consisting of H, halogen, formyl, carboxyl, cyano, ester, amide, alkyl, alkoxy, oxoalkyl, alkenyl, alkynyl, aryl or arylalkyl, which moiety may optionally be substituted with one or more substituents or interrupted by one or more hetero atoms; and
recovering a furanone endcapped polymer.
11. The method of claim 10, wherein the furanone is of the formula:
wherein R1, R2, R3, R4 and R5 are independently or all H, halogen, hydroxyl, or acetate.
12. The method of claim 10, wherein the furanone can be in an amount from about 2 to about 8 moles of furanone per mole of polymer.
13. The method of claim 10, wherein the endcapping of one or more polymers with a furanone occurs for a period of time from about 15 minutes to about 72 hours, at a temperature from about 0\xb0 C. to about 250\xb0 C.
14. A suture comprising a polymer comprising one or more monomers selected from the group consisting of lactide, glycolide, trimethylene carbonate, tetramethylene carbonate, dimethyl trimethylene carbonate, dioxanone, dioxepanone, caprolactone, valerolactone, and combinations thereof endcapped with a furanone of the formula:
wherein R2, R3 and R4 are independently or all H, halogen, hydroxyl, or acetate,
\u201c\u2550\u201d represents a double bond, and
X is a moiety selected from the group consisting of H, halogen, formyl, carboxyl, cyano, ester, amide, alkyl, alkoxy, oxoalkyl, alkenyl, alkynyl, aryl or arylalkyl, which moiety may optionally be substituted with one or more substituents or interrupted by one or more hetero atoms.
15. The suture of claim 14, wherein the polymer comprises one or more monomers selected from the group consisting of lactide, glycolide, trimethylene carbonate, tetramethylene carbonate, dimethyl trimethylene carbonate, dioxanone, dioxepanone, caprolactone, valerolactone, and combinations thereof.
16. The suture of claim 14, wherein the furanone is of the formula:
wherein R1, R2, R3, R4 and R5 are independently or all H, halogen, hydroxyl, or acetate.
17. The suture of claim 14, wherein at least a portion of a surface of the suture possesses a coating comprising the polymer endcapped with a furanone.
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 dry process for coating a metal oxide particle, said process comprising:
contacting a moving bed of metal oxide particles in a moving bed reactor with a first reactant in a manner sufficient for said first reactant to adsorb to the surface of said metal oxide particles to produce first reactant adsorbed titania particles; and
contacting said first reactant adsorbed metal oxide particles with a second reactant under conditions sufficient for said second reactant to react with substantially all of said adsorbed first reactant to produce a coating of a product on the surface of said metal oxide particles.
2. The process according to claim 1, wherein said first reactant has a dipole moment of greater than 1 debye.
3. The process according to claim 2, wherein said first reactant is selected from the group consisting of: H2O, NH3, ROH, H2O2, O2, O3 and N2O.
4. The process according to claim 1, wherein said second reactant comprises an element selected from the group consisting of: Al, B, Ge, Ga, Mg, Ca, Ba, Zr, Ti, V, Ta and P.
5. The process according to claim 1, wherein said second reactant comprises Si.
6. The process according to claim 5, wherein said second reactant is selected from the group consisting of silicon halides and organosilicons.
7. The process according to claim 1, wherein said product is a dielectric.
8. The process according to claim 7, wherein said dielectric is selected from the group consisting of silica and alumina.
9. The process according to claim 1, wherein said metal oxide particle is a titania particle.
10. A dry process for coating a titania particle with a compact silica layer, said process contacting a fluidized bed of titania particles in a fluidized bed reactor with gaseous H2O in a manner sufficient for said H2O to adsorb to the surface of said titania particles to produce H2O adsorbed titania particles; and
contacting said H2O adsorbed titania particles with a gaseous Si containing reactant under conditions sufficient for said gaseous Si containing reactant to react with substantially all of said adsorbed H2O to produce a compact coating of silica on the surface of said titania particles.
11. The process according to claim 10, wherein said titania particles have a diameter ranging from about 0.001 to 100.
12. The process according to claim 10, wherein said Si containing reactant is selected from the group consisting of silicon halides and organosilicons.
13. The process according to claim 12, wherein said Si containing reactant is a silicon halide.
14. The process according to claim 13, wherein said silicon halide is SiCl4.
15. The process according to claim 13, wherein said Si containing reactant is an organosilicon.
16. The process according to claim 15, wherein said organosilicon is TEOS.
17. The process according to claim 10, wherein said process further comprises pretreating said titania particles to increase the energy of adsorption of said adsorbed H2O.
18. A dry process for coating a titania particle with a compact silica layer, said process comprising:
introducing titania particles ranging in size from about 0.001 to 100 into a fluidized bed reactor to produce a fluidized bed of titania particles;
introducing gaseous H2O into said fluidized bed reactor in a manner sufficient for said H2O to adsorb to the surface of said titania particles; and
introducing a gaseous silicon halide into said fluidized bed reactor under conditions sufficient for said silicon halide to react with substantially all of said adsorbed H2O on said titania particles to produce a compact coating of silica on the surface of said titania particles;
whereby titania particles coated with a compact layer of silica are produced.
19. The process according to claim 18, wherein said silicon halide is SiCl4.
20. The process according to claim 18, wherein said process further comprises pretreating said titania particles to increase the energy of adsorption of said adsorbed H2O.
21. Coated titania particles produced according to the process of claim 1.
22. Coated titania particles produced according to the process of claim 10.
23. Coated titania particles produced according to the process of claim 18.