Methods for producing photosensitive microparticles, non-aqueous dispersions thereof and articles prepared therewith
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G03C-001/72
G03F-007/00
출원번호
US-0719293
(2010-03-08)
등록번호
US-8563212
(2013-10-22)
발명자
/ 주소
Bowles, Steven E.
Chopra, Anu
Colton, James P.
Faler, Dennis L.
Haley, M. Frank
Lamers, Paul H.
Lu, Yunyi
Stewart, Kevin J.
Taylor, Cathy A.
Wang, Feng
Zezinka, Elizabeth A.
출원인 / 주소
Transitions Optical, Inc.
대리인 / 주소
Altman, Deborah M.
인용정보
피인용 횟수 :
1인용 특허 :
79
초록▼
Described are non-aqueous dispersions of photosensitive polymeric microparticles, comprising: a) an organic continuous phase comprising an organic solvent; and b) photosensitive polymeric microparticles dispersed in the organic continuous phase. The microparticles comprise an at least partially poly
Described are non-aqueous dispersions of photosensitive polymeric microparticles, comprising: a) an organic continuous phase comprising an organic solvent; and b) photosensitive polymeric microparticles dispersed in the organic continuous phase. The microparticles comprise an at least partially polymerized component having integral surface and interior domains, wherein the surface domain comprises a polymeric material that is solubilized by the organic solvent, the interior domain comprises a polymeric material that is insoluble in the organic solvent, and the surface domain and/or interior domain is photosensitive. Also described are methods of producing such non-aqueous dispersions, curable film-forming compositions containing them, and photosensitive coated substrates.
대표청구항▼
1. A non-aqueous dispersion of photosensitive polymeric microparticles, comprising: a) an organic continuous phase comprising an organic solvent; andb) photosensitive polymeric microparticles dispersed in the organic continuous phase, wherein the microparticles comprise an at least partially polymer
1. A non-aqueous dispersion of photosensitive polymeric microparticles, comprising: a) an organic continuous phase comprising an organic solvent; andb) photosensitive polymeric microparticles dispersed in the organic continuous phase, wherein the microparticles comprise an at least partially polymerized component having integral surface and interior domains, wherein the surface domain comprises a polymeric material that is solubilized by the organic solvent, the interior domain comprises a polymeric material that is insoluble in the organic solvent, and the surface domain and/or interior domain is photosensitive. 2. The non-aqueous dispersion of claim 1 wherein the organic solvent is a polar solvent comprising an alcohol, diol, glycol, ether, amide, nitrile, ester, ketone, and/or lactam. 3. The non-aqueous dispersion of claim 1 wherein the photosensitive material is substantially non-extractable from the photosensitive polymeric microparticles. 4. The non-aqueous dispersion of claim 1 wherein the photosensitive polymeric microparticles are magnetic, magnetically responsive, electrically conductive, dichroic, chromatic and/or chemically reactive with a crosslinking material. 5. The non-aqueous dispersion of claim 1, further comprising a nanopigment and/or non-photosensitive dye. 6. A curable, photosensitive film-forming composition prepared from: (a) a film-forming component comprising at least one material having reactive functional groups; and(b) a non-aqueous dispersion of photosensitive polymeric microparticles, comprising:i) an organic continuous phase comprising an organic solvent; andii) photosensitive polymeric microparticles dispersed in the organic continuous phase, wherein the microparticles comprise an at least partially polymerized component having integral surface and interior domains, wherein the surface domain comprises at least one substantially hydrophilic region, the interior domain comprises at least one substantially hydrophobic region, and the surface and/or interior domain is photosensitive. 7. The film-forming composition of claim 6, wherein the film-forming component (a) comprises an alkoxide of the general formula RxM(OR′)z-x where R is an organic radical, M is silicon, aluminum, titanium, and/or zirconium, each R′ is independently an alkyl radical, z is the valence of M, and x is a number less than z. 8. The film-forming composition of claim 6 wherein the organic solvent is a polar solvent comprising an alcohol, diol, glycol, ether, amide, nitrile, ester, ketone, and/or lactam. 9. A substrate coated with the curable film-forming composition of claim 6. 10. The coated substrate of claim 9 wherein the substrate is an ophthalmic element selected from the group consisting of corrective lenses, non-corrective lenses, contact lenses, intra-ocular lenses, magnifying lenses, protective lenses and visors, and wherein after curing, the film-forming composition demonstrates a refractive index greater than 1.5. 11. The film-forming composition of claim 6, wherein the material having reactive functional groups in the film-forming component (a) comprises an aminoplast, a capped or free polyisocyanate, and/or an ethylenically unsaturated compound. 12. The film-forming composition of claim 11, wherein the material having reactive functional groups in the film-forming component (a) comprises an aminoplast, and wherein the substantially hydrophilic region of the surface domain of the microparticles is prepared from an isocyanurate. 13. The film-forming composition of claim 6, wherein the photosensitive polymeric microparticles contain functional groups that are reactive with the reactive functional groups in the material in film-forming component (a). 14. The film-forming composition of claim 6, wherein the photosensitive polymeric microparticles are photochromic.
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