A method for making agglomerate particles from a composition comprising at least a radiation curable binder and solid particulates. The method comprises the steps of forcing the composition through a perforated substrate to form agglomerate precursor particles which then separate from the perforated
A method for making agglomerate particles from a composition comprising at least a radiation curable binder and solid particulates. The method comprises the steps of forcing the composition through a perforated substrate to form agglomerate precursor particles which then separate from the perforated substrate. Then, the particles are irradiated to form soldified, handleable agglomerate particles before being collected.
대표청구항▼
1. A method for making agglomerate particles comprising the steps of:a) forcing a composition comprising a radiation curable polymerizable binder precursor and a plurality of solid particulates through a perforated substrate to form agglomerate precursor particles; and b) separating the agglomerate
1. A method for making agglomerate particles comprising the steps of:a) forcing a composition comprising a radiation curable polymerizable binder precursor and a plurality of solid particulates through a perforated substrate to form agglomerate precursor particles; and b) separating the agglomerate precursor particles from the perforated substrate; and c) irradiating the agglomerate precursor particles wherein radiation energy is transmitted from a radiation energy source to the agglomerate precursor particles to at least partially cure the binder precursor to provide agglomerate particles, and wherein the steps a), b), and c) are spatially oriented in a vertical and consecutive manner. 2. A method according to claim 1, wherein the agglomerate particles are collected after the irradiation step.3. A method according to claim 1, wherein the irradiation step comprises a step of passing the agglomerate precursor particles into a first curing zone that contains the radiation source.4. A method according to claim 1, wherein the agglomerate particles are passed through a second curing zone, wherein energy is transmitted from an energy source to the agglomerate particles to further cure the agglomerate particles.5. A method according to claim 1, wherein the binder precursor is selected from the group consisting of epoxy resins, acrylated urethane resins, acrylated epoxy resins, ethylenically unsaturated resins, aminoplast resins having pendant unsaturated carbonyl groups, isocyanurate derivatives having at least one pendant acrylate group, isocyanate derivatives having at least one pendant acrylate group, and combinations thereof.6. A method according to claim 1, wherein the plurality of solid particulates is selected from the group consisting of fillers, plastic particulates, reinforcing particulates, inorganic binder precursor particulates, anti-static agents, lubricants, pigments, suspending agents, and combinations thereof.7. A method according to claim 1, wherein the agglomerate particles are filamentary shaped and have a length ranging from about 10 to about 1500 micrometers.8. A method according to claim 1, wherein the length of the agglomerate particles is in a range from about 20 to about 800 micrometers.9. A method according to claim 1, wherein the length of the agglomerate particles is in a range from about 50 to about 400 micrometers.10. A method according to claim 1, wherein the agglomerate particles have a substantially constant cross-sectional shape.11. A method according to claim 1, wherein the cross-sectional shape comprises circles, polygons or combinations thereof.12. A method according to claim 1, wherein the agglomerate precursor particles further comprise a modifying additive.13. A method according to claim 12, wherein the modifying additives are selected from the group consisting of coupling agents, grinding aids, fillers, inorganic binder precursors, surfactants, and combinations thereof.14. A method according to claim 1, wherein the step of forcing the composition through the perforated substrate to form the agglomerate particles is selected from the group consisting of extrusion, milling, and calendering.15. A method according to claim 1, wherein the radiation energy source is selected from the group consisting of electron beam, ultraviolet light, visible light, laser light, and combinations thereof.16. A method according to claim 3, wherein the radiation energy source is selected from the group consisting of electron beam, ultraviolet light, visible light, laser light, and combinations thereof.17. A method according to claim 4, wherein the energy source is selected from the group consisting of electron beam, ultraviolet light, visible light, microwave, laser light, thermal, and combinations thereof.18. A method according to claim 1, wherein steps (a), (b), and (c) are performed continuously.19. A method according to claim 4, wherein steps (a), (b), and (c) are performed sequentially and continuously.20. A method according to claim 1, wherein the plurality of solid particulates comprise from 5 to 95% by weight of the composition.21. A method according to claim 1, wherein the plurality of solid particulates comprise from 40 to 95% by weight of the composition.22. A method according to claim 1, wherein said composition is 100% solids.23. A method according to claim 1, wherein a size reduction step is performed on the agglomerate particles after the irradiation step.24. A method according to claim 4, wherein a size reduction step is performed on the agglomerate particles after being passed through the second curing zone.25. A method according to claim 23, wherein the size reduction step comprises the methods of milling, crushing and tumbling.26. A method according to claim 24, wherein the size reduction step comprises the methods of milling, crushing and tumbling.27. An agglomerate particle made according to claim 1.28. An inorganic aggregate precursor agglomerate particle made according to claim 1.29. A method according to claim 1, wherein the solid particulates comprise abrasive grains abrasive grains having a Mohs hardness of at least 8.30. A method according to claim 29, wherein the abrasive grains have a Mohs hardness of greater than 9.31. A method according to claim 29, wherein the abrasive grains comprise at least one of fused aluminum oxide abrasive grains, ceramic aluminum oxide abrasive grains, or alumina zirconia abrasive grains.32. A method according to claim 29, wherein the irradiation step includes passing the agglomerate precursor particles into a first curing zone that includes the radiation source.33. A method according to claim 29, wherein the agglomerate particles are collected after the irradiation step.34. A method according to claim 29, wherein the agglomerate particles are passed through a second curing zone, wherein energy is transmitted from an energy source to the agglomerate particles to further cure the agglomerate particles.35. A method according to claim 34, wherein second curing zone includes a radiation energy source selected from the group consisting of electron beam, ultraviolet light, visible light, microwave, laser light, thermal, and combinations thereof.36. A method according to claim 34, wherein a size reduction step is performed on the agglomerate particles after the irradiation step.37. A method according to claim 29, wherein the binder precursor is selected from the group consisting of epoxy resins, acrylated urethane resins, acrylated epoxy resins, ethylenically unsaturated resins, aminoplast resins having pendant unsaturated carbonyl groups, isocyanurate derivatives having at least one pendant acrylate group, isocyanate derivatives having at least one pendant acrylate group, and combinations thereof.38. A method according to claim 29, wherein the agglomerate particles are filamentary shaped and have a length ranging from about 10 to about 1500 micrometers.39. A method according to claim 29, wherein the length of the agglomerate particles is in a range from about 20 to about 800 micrometers.40. A method according to claim 29, wherein the length of the agglomerate particles is in a range from about 50 to about 400 micrometers.41. A method according to claim 29, wherein the agglomerate particles have a substantially constant cross-sectional shape.42. A method according to claim 29, wherein the cross-sectional shape comprises circles, polygons or combinations thereof.43. A method according to claim 29, wherein the agglomerate precursor particles further comprise a modifying additive.44. A method according to claim 43, wherein the modifying additives are selected from the group consisting of coupling agents, grinding aids, fillers, inorganic binder precursors, surfactants, and combinations thereof.45. A method according to claim 29, wherein step (a) the step of forcing the composition through the perforated substrate to form the agglomerate particles is selected from the group consisting of extrusion and milling.46. A method according to claim 29, wherein the radiation energy source is selected from the group consisting of electron beam, ultraviolet light, visible light, laser light, and combinations thereof.47. A method according to claim 29, wherein steps (a), (b), and (c) are performed continuously.48. A method according to claim 29, wherein the plurality of abrasive grains comprise from 5 to 95% by weight of the composition.49. A method according to claim 29, wherein the plurality of solid particulates comprise from 40 to 95% by weight of the composition.50. A method according to claim 29, wherein a size reduction step is performed on the agglomerate particles after the irradiation step.51. A method according to claim 1, wherein the solid particulates comprise at least one of fused aluminum oxide abrasive grains, heat treated aluminum oxide abrasive grains, ceramic aluminum oxide abrasive grains, or alumina-zirconia abrasive grains.52. A method according to claim 51, wherein the irradiation step includes passing the agglomerate precursor particles into a first curing zone that includes the radiation energy source.53. A method according to claim 51, wherein the agglomerate particles are collected after the irradiation step.54. A method according to claim 51, wherein step (c) includes a second curing zone wherein energy is transmitted from a radiation energy source to the agglomerate particles to further cure the agglomerate particles.55. A method according to claim 51, wherein the second curing zone includes a radiation energy source selected from the group consisting of electron beam, ultraviolet light, visible light, microwave, laser light, thermal, and combinations thereof.56. A method according to claim 53, wherein a size reduction step is performed on the agglomerate particles after the irradiation step.57. A method according to claim 51, wherein the binder precursor is selected from the group consisting of epoxy resins, acrylated urethane resins, acrylated epoxy resins, ethylenically unsaturated resins, aminoplast resins having pendant unsaturated carbonyl groups, isocyanurate derivatives having at least one pendant acrylate group, isocyanate derivatives having at least one pendant acrylate group, and combinations thereof.58. A method according to claim 51, wherein the agglomerate particles are filamentary shaped and have a length ranging from about 10 to about 1500 micrometers.59. A method according to claim 51, wherein the length of the agglomerate particles is in a range from about 20 to about 800 micrometers.60. A method according to claim 51, wherein the length of the agglomerate particles is in a range from about 50 to about 400 micrometers.61. A method according to claim 51, wherein the agglomerate particles have a substantially constant cross-sectional shape.62. A method according to claim 61, wherein the cross-sectional shape comprises circles, polygons or combinations thereof.63. A method according to claim 61, wherein the agglomerate precursor particles further comprise a modifying additive.64. A method according to claim 61, wherein the modifying additives are selected from the group consisting of coupling agents, grinding aids, fillers, inorganic binder precursors, surfactants, and combinations thereof.65. A method according to claim 61, wherein the second curing zone includes a radiation energy source selected from the group consisting of electron beam, ultraviolet light, visible light, microwave, laser light, thermal, and combinations thereof.66. A method according to claim 61, wherein steps (a), (b), and (c) are performed continuously.67. A method according to claim 61, wherein the plurality of abrasive grains comprise from 5 to 95% by weight of the composition.68. A method according to claim 61, wherein the plurality of solid particulates comprise from 40 to 95% by weight of the composition.69. A method according to claim 61, wherein a size reduction step is performed on the agglomerate particles after the irradiation step.70. A method of making an abrasive article comprising the steps of:a) forcing a composition through a perforated substrate to form agglomerate precursor particles, the composition comprising a radiation curable polymerizable binder precursor and a plurality of abrasive grains; and b) separating the agglomerate precursor particles from the perforated substrate; c) irradiating the agglomerate precursor particles, wherein radiation energy is transmitted from a radiation energy source to the agglomerate precursor particles to at least partially cure the binder precursor to provide agglomerate particles; and d) incorporating at least one agglomerate particle into an abrasive article, wherein steps a), b), and c) are spatially oriented in a vertical and consecutive manner. 71. A method according to claim 70, wherein the abrasive article comprises a bonded abrasive article.72. A method according to claim 70, wherein the abrasive article comprises a coated abrasive article.73. A method according to claim 70, wherein the abrasive article comprises a nonwoven abrasive article.74. A method according to claim 70, wherein the abrasive grains have a Mohs hardness of at least 8.75. A method according to claim 70, wherein the abrasive grains comprise at least one of fused aluminum oxide abrasive grains, heat treated aluminum oxide abrasive grains, ceramic aluminum oxide abrasive grains, or alumina-zirconia abrasive grains.
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이 특허에 인용된 특허 (199)
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