ES2054804T3 - Fabricacion de articulos fotocromicos. - Google Patents
Fabricacion de articulos fotocromicos.Info
- Publication number
- ES2054804T3 ES2054804T3 ES88304403T ES88304403T ES2054804T3 ES 2054804 T3 ES2054804 T3 ES 2054804T3 ES 88304403 T ES88304403 T ES 88304403T ES 88304403 T ES88304403 T ES 88304403T ES 2054804 T3 ES2054804 T3 ES 2054804T3
- Authority
- ES
- Spain
- Prior art keywords
- mixture
- polyurethane
- photochromic
- plastics
- incorporating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/685—Compositions containing spiro-condensed pyran compounds or derivatives thereof, as photosensitive substances
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
- G03C1/73—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing organic compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S359/00—Optical: systems and elements
- Y10S359/90—Methods
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Laminated Bodies (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polyurethanes Or Polyureas (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Optical Filters (AREA)
- Glass Compositions (AREA)
Abstract
UN PROCEDIMIENTO PARA OBTENER UN PLASTICO DE POLIURETANO, QUE TIENE PROPIEDADES FOTOCROMICAS, CARACTERIZADO PORQUE EL PROCEDIMIENTO COMPRENDE, EN UNA PRIMERA ETAPA, LA INCORPORACION DE UN COMPUESTO FOTOCROMICO DE EXCISION REVERSIBLE A POR LO MENOS UN COMPUESTO DE DIISOCIANATO, O POR LO MENOS UN POLIOL O UNA MEZCLA DE DIISOCIANATO Y UNO O MAS POLIOLES O A CUALQUIER OTRO COMPONENTE DE UNA MEZCLA QUE, CUANDO SE POLIMERIZA, PRODUCE UN POLIURETANO; COMBINAR LA MEZCLA DE LA PRIMERA ETAPA CON CUALESQUIERA OTROS COMPONENTES NECESARIOS PARA HACER POSIBLE QUE TENGA LUGAR LA POLIMERIZACION; Y POLIMERIZAR LA MEZCLA RESULTANTE PARA FORMAR UN POLIURETANO QUE INCORPORA DICHO COMPUESTO FOTOCROMICO. LOS PLASTICOS DE POLIURETANO FOTOCROMICO DE LA INVENCION SON UTILES COMO CAPAS DE INTERMEDIOS DE LAMINADOS DE VIDRIO O PLASTICOS PARA APLICACIONES ARQUITECTONICAS O PARA EN VENTANAS DE VEHICULOS O GUARDILLAS.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB878712210A GB8712210D0 (en) | 1987-05-22 | 1987-05-22 | Photochromic articles |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2054804T3 true ES2054804T3 (es) | 1994-08-16 |
Family
ID=10617809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES88304403T Expired - Lifetime ES2054804T3 (es) | 1987-05-22 | 1988-05-16 | Fabricacion de articulos fotocromicos. |
Country Status (14)
Country | Link |
---|---|
US (1) | US4889413A (es) |
EP (1) | EP0294056B1 (es) |
JP (1) | JP2849386B2 (es) |
AT (1) | ATE104066T1 (es) |
AU (1) | AU601580B2 (es) |
BR (1) | BR8802478A (es) |
CA (1) | CA1339838C (es) |
DE (1) | DE3888868T2 (es) |
ES (1) | ES2054804T3 (es) |
FI (1) | FI94961C (es) |
GB (1) | GB8712210D0 (es) |
MX (1) | MX171102B (es) |
NZ (1) | NZ224721A (es) |
ZA (1) | ZA883554B (es) |
Families Citing this family (84)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4986934A (en) * | 1988-03-25 | 1991-01-22 | Ppg Industries, Inc. | Photochromic compound and articles containing the same |
US4980089A (en) * | 1989-07-12 | 1990-12-25 | Ppg Industries, Inc. | Photochromic spiropyran compounds |
US5066818A (en) * | 1990-03-07 | 1991-11-19 | Ppg Industries, Inc. | Photochromic naphthopyran compounds |
US5200116A (en) * | 1990-07-23 | 1993-04-06 | Ppg Industries, Inc. | Photochromic chromene compounds |
US5244602A (en) * | 1990-12-03 | 1993-09-14 | Ppg Industries, Inc. | Photochromic naphthopyrans |
DE4127810C2 (de) * | 1991-08-22 | 1997-04-24 | Rodenstock Optik G | Optisch transparentes photochromes Kunststoffmaterial |
US5238981A (en) * | 1992-02-24 | 1993-08-24 | Transitions Optical, Inc. | Photochromic naphthopyrans |
US5585042A (en) * | 1992-02-24 | 1996-12-17 | Transitions Optical, Inc. | Photochromic naphthopyrans |
US5228767A (en) * | 1992-03-24 | 1993-07-20 | Johnson Michael B | Headlight lens with external light sensitivity |
US5274132A (en) * | 1992-09-30 | 1993-12-28 | Transitions Optical, Inc. | Photochromic naphthopyran compounds |
GB9225346D0 (en) * | 1992-12-03 | 1993-01-27 | Pilkington Plc | Photochromic compounds |
GB9225348D0 (en) * | 1992-12-03 | 1993-01-27 | Pilkington Plc | Bridged photochromics |
GB9225347D0 (en) * | 1992-12-03 | 1993-01-27 | Pilkington Plc | Photo reactive material |
US5464567A (en) * | 1994-04-08 | 1995-11-07 | Transitions Optical, Inc. | Photochromic tetraphenyl naphthodipyrans |
US5395567A (en) * | 1994-04-18 | 1995-03-07 | Ppg Industries, Inc. | Photochromic spironaphthopyran compounds |
IL115803A (en) * | 1994-11-03 | 2000-02-17 | Ppg Industries Inc | Indeno-naphthopyran derivatives useful for photochromic articles |
US5645767A (en) * | 1994-11-03 | 1997-07-08 | Transitions Optical, Inc. | Photochromic indeno-fused naphthopyrans |
US6034193A (en) * | 1995-07-12 | 2000-03-07 | Corning Incorporated | Photochromic organic materials |
AUPN718195A0 (en) * | 1995-12-18 | 1996-01-18 | Sola International Holdings Ltd | Laminate wafers |
AU718996B2 (en) * | 1995-12-18 | 2000-05-04 | Carl Zeiss Vision Australia Holdings Ltd | Laminate wafers |
US5744070A (en) * | 1995-12-20 | 1998-04-28 | Transitions Optical, Inc. | Photochromic substituted naphthopyran compounds |
US5723072A (en) * | 1996-06-17 | 1998-03-03 | Ppg Industries, Inc. | Photochromic heterocyclic fused indenonaphthopyrans |
US5698141A (en) * | 1996-06-17 | 1997-12-16 | Ppg Industries, Inc. | Photochromic heterocyclic fused indenonaphthopyrans |
US5955520A (en) * | 1996-06-17 | 1999-09-21 | Ppg Industries, Inc. | Photochromic indeno-fused naphthopyrans |
HUP0001995A3 (en) * | 1997-02-21 | 2002-02-28 | Ppg Ind Ohio Inc Cleveland | Photochromic polyurethane coatings and articles having such a coating |
CA2255381C (en) * | 1997-12-29 | 2008-09-16 | Bayer Corporation | Photochromic polyurethanes |
US6413699B1 (en) | 1999-10-11 | 2002-07-02 | Macdermid Graphic Arts, Inc. | UV-absorbing support layers and flexographic printing elements comprising same |
WO2001057106A1 (en) * | 2000-02-04 | 2001-08-09 | Ppg Industries Ohio, Inc. | Photochromic coated articles |
US6531076B2 (en) | 2000-02-04 | 2003-03-11 | Ppg Industries Ohio, Inc. | Photochromic organic resin composition |
DE60111617T2 (de) * | 2000-03-22 | 2006-06-08 | Transitions Optical, Inc., Pinellas Park | Hydroxylierte/carboxylierte naphthopyrane |
WO2001077740A1 (fr) * | 2000-04-10 | 2001-10-18 | Mitsubishi Gas Chemical Company, Inc. | Stratifie photochrome en resine synthetique transparente |
US7077985B2 (en) * | 2000-05-30 | 2006-07-18 | Vision-Ease Lens | Injection molding of lens |
TW534869B (en) * | 2000-06-09 | 2003-06-01 | Mitsubishi Gas Chemical Co | Synthetic resin laminate having both polarization characteristic and photochromism characteristic, and molded article obtained therefrom |
FR2811322B1 (fr) * | 2000-07-07 | 2002-10-18 | Essilor Int | Procede de preparation d'un latex de polyurethane photochromique et application a l'optique ophtalmique |
JP2002196103A (ja) * | 2000-12-25 | 2002-07-10 | Mitsubishi Gas Chem Co Inc | フォトクロミック特性を有する合成樹脂積層体の製造方法 |
US8017720B2 (en) | 2005-12-16 | 2011-09-13 | Ppg Industries Ohio, Inc. | Sulfur-containing oligomers and high index polyurethanes prepared therefrom |
US6811727B2 (en) * | 2002-01-09 | 2004-11-02 | Corning Incorporated | Ophthalmic filter materials |
US7035010B2 (en) * | 2002-03-14 | 2006-04-25 | Intercast Europe, S.P.A. | Polarized lenses with variable transmission |
FR2838746B1 (fr) * | 2002-04-17 | 2004-07-09 | Corning Inc | Compositions photochromiques reticulables, reticulees; preparation; substrats revetus desdites compositions, lentilles en lesdites compositions reticulees |
US7036932B2 (en) * | 2002-10-04 | 2006-05-02 | Vision-Ease Lens | Laminated functional wafer for plastic optical elements |
US7465414B2 (en) * | 2002-11-14 | 2008-12-16 | Transitions Optical, Inc. | Photochromic article |
US7009032B2 (en) | 2002-12-20 | 2006-03-07 | Ppg Industries Ohio, Inc. | Sulfide-containing polythiols |
US20040180211A1 (en) * | 2003-01-24 | 2004-09-16 | Vision-Ease Lens, Inc. | Photochromic polyurethane film of improved fatigue resistance |
US7262295B2 (en) | 2003-03-20 | 2007-08-28 | Transitions Optical, Inc. | Indeno-fused photochromic naphthopyrans, naphthols and photochromic articles |
KR20050001225A (ko) * | 2003-06-27 | 2005-01-06 | 주식회사 팬텀 | 광변색 골프공 |
US6984262B2 (en) * | 2003-07-16 | 2006-01-10 | Transitions Optical, Inc. | Adhesion enhancing coating composition, process for using and articles produced |
US7294290B2 (en) | 2003-08-01 | 2007-11-13 | Ngx, Inc. | Photochromic composition in a solid matrix |
TWI290572B (en) * | 2003-08-06 | 2007-12-01 | Lg Chemical Ltd | Primer composition for coating transparent materials and photochromic transparent materials |
EP1673655B1 (en) | 2003-09-09 | 2015-05-06 | Insight Equity A.P.X., LP | Photochromic polyurethane laminate |
US7858001B2 (en) * | 2003-09-09 | 2010-12-28 | Insight Equity A.P.X., L.P. | Photochromic lens |
US7094368B2 (en) * | 2003-12-10 | 2006-08-22 | Transitions Optical, Inc. | Pyrano-quinolines, pyrano-quinolinones, combinations thereof, photochromic compositions and articles |
US7465415B2 (en) * | 2004-07-30 | 2008-12-16 | Ppg Industries Ohio, Inc. | Photochromic materials derived from ring-opening monomers and photochromic initiators |
US11149107B2 (en) | 2004-09-01 | 2021-10-19 | Ppg Industries Ohio, Inc. | Polyurethanes, articles and coatings prepared therefrom and methods of making the same |
US9464169B2 (en) | 2004-09-01 | 2016-10-11 | Ppg Industries Ohio, Inc. | Polyurethanes, articles and coatings prepared therefrom and methods of making the same |
US9598527B2 (en) | 2004-09-01 | 2017-03-21 | Ppg Industries Ohio, Inc. | Polyurethanes, articles and coatings prepared therefrom and methods of making the same |
US20090280329A1 (en) | 2004-09-01 | 2009-11-12 | Ppg Industries Ohio, Inc. | Polyurethanes, Articles and Coatings Prepared Therefrom and Methods of Making the Same |
US11248083B2 (en) | 2004-09-01 | 2022-02-15 | Ppg Industries Ohio, Inc. | Aircraft windows |
US20090280709A1 (en) | 2004-09-01 | 2009-11-12 | Ppg Industries Ohio, Inc. | Polyurethanes, Articles and Coatings Prepared Therefrom and Methods of Making the Same |
US11008418B2 (en) | 2004-09-01 | 2021-05-18 | Ppg Industries Ohio, Inc. | Polyurethanes, articles and coatings prepared therefrom and methods of making the same |
US11591436B2 (en) | 2004-09-01 | 2023-02-28 | Ppg Industries Ohio, Inc. | Polyurethane article and methods of making the same |
EP1874984A2 (en) | 2005-03-04 | 2008-01-09 | Vision-Ease Lens, Inc. | Forming method for polymeric laminated wafers comprising different film materials |
EP1909385B1 (en) * | 2005-07-25 | 2013-09-18 | Toyota Jidosha Kabushiki Kaisha | Power generating apparatus |
US20070259117A1 (en) * | 2006-05-04 | 2007-11-08 | Bayer Materialscience Llc | Article having photochromic properties and process for its manufacture |
DK2027186T3 (da) | 2006-05-05 | 2014-04-14 | Prc Desoto Int Inc | Forseglings- og elektriske indstøbningsformuleringer omfattende thioetherfunktionelle polythiololigomerer |
WO2008020829A2 (en) * | 2006-08-09 | 2008-02-21 | Softlight, Inc. | Extruded photochromic film on glass |
US7906214B2 (en) * | 2007-01-26 | 2011-03-15 | Transitions Optical, Inc. | Optical elements comprising compatiblizing coatings and methods of making the same |
US20080209825A1 (en) * | 2007-03-01 | 2008-09-04 | Smith David H | Color changing system for structures and method therefor |
JP5567002B2 (ja) * | 2009-03-31 | 2014-08-06 | Hoya株式会社 | フォトクロミックレンズ製造システム、フォトクロミックレンズの製造プログラム、及び、フォトクロミックレンズの製造プログラムが記録された記録媒体 |
US8188181B2 (en) | 2009-09-22 | 2012-05-29 | Corning Incorporated | Photochromic compositions, resins and articles obtained therefrom |
US20120154906A1 (en) * | 2010-12-17 | 2012-06-21 | Pallavi Tatapudy | Glaraser |
JP5963856B2 (ja) | 2011-06-28 | 2016-08-03 | スリーエム イノベイティブ プロパティズ カンパニー | 光応答性ハイブリッド有機無機粒子を調製するためのプロセス |
US8641933B2 (en) | 2011-09-23 | 2014-02-04 | Ppg Industries Ohio, Inc | Composite crystal colloidal array with photochromic member |
KR20150033662A (ko) | 2012-06-25 | 2015-04-01 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | 윤곽화된 표면을 코팅하기 위한 장치 |
WO2014002844A1 (ja) | 2012-06-26 | 2014-01-03 | 三井化学株式会社 | 光学材料用重合性組成物、当該組成物から得られる光学材料およびプラスチックレンズ |
US9568643B2 (en) | 2012-12-13 | 2017-02-14 | Ppg Industries Ohio, Inc. | Polyurethane urea-containing compositions and optical articles and methods for preparing them |
US9081130B1 (en) | 2013-01-09 | 2015-07-14 | Insight Equity A.P.X., Lp | Photochromic polyurethane laminate |
US9440419B2 (en) | 2013-03-15 | 2016-09-13 | Vision Ease, Lp | Photochromic polyurethane laminate |
RU2016118002A (ru) | 2013-10-11 | 2017-11-16 | Трэнсиженс Оптикал, Инк. | Фотохромное оптическое изделие, имеющее аллофанатное защитное покрытие, и процесс его изготовления |
WO2015077177A1 (en) | 2013-11-20 | 2015-05-28 | Transitions Optical, Inc. | Method of forming a photochromic segmented multifocal lens |
JP6127159B2 (ja) * | 2014-02-03 | 2017-05-10 | 三井化学株式会社 | 光学材料用重合性組成物、当該組成物から得られる光学材料およびプラスチックレンズ |
CN107924116B (zh) | 2015-09-03 | 2021-06-15 | 光学转变公司 | 多层光致变色制品 |
JP7033605B2 (ja) | 2017-03-01 | 2022-03-10 | ヤンガー・マニュファクチャリング・カンパニー・ドゥーイング/ビジネス/アズ・ヤンガー・オプティックス | フォトクロミックアイウェアレンズの製造方法およびフォトクロミックアイウェア製品 |
US20210040280A1 (en) | 2018-01-25 | 2021-02-11 | Nanogate Se | Self-supporting photochromic polyurethane film, method of manufacturing the film, article comprising said film |
US20210108113A1 (en) | 2018-04-12 | 2021-04-15 | Tokuyama Corporation | Photochromic optical article and method for manufacturing same |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3816335A (en) * | 1969-03-24 | 1974-06-11 | Raychem Corp | Reversibly thermochromic ionically and radiation cross-linked polymers containing cobaltous ions |
JPS5234594B2 (es) * | 1971-11-20 | 1977-09-03 | ||
GB1446586A (en) * | 1973-07-30 | 1976-08-18 | Ici Ltd | Thermoplastic polyurethanes mixed with ehtylene copolymers |
DD116520A1 (es) * | 1974-10-24 | 1975-11-20 | ||
US4217391A (en) * | 1978-12-26 | 1980-08-12 | Kaltz Milton C | Glass panel for land vehicles |
US4286957A (en) * | 1979-01-10 | 1981-09-01 | Essilor International "Cie Generale D'optique" | Process of integrating a photochromic substance into an ophthalmic lens and a photochromic lens of organic material |
FR2450469A1 (fr) * | 1979-02-28 | 1980-09-26 | Essilor Int | Lentille ophtalmique photochromique en matiere organique |
FR2496089A1 (fr) * | 1980-12-11 | 1982-06-18 | Saint Gobain Vitrage | Vitrage feuillete de securite |
JPS59135152A (ja) * | 1983-01-25 | 1984-08-03 | 旭硝子株式会社 | 積層安全ガラスおよびその製造方法 |
US4699473A (en) * | 1983-08-08 | 1987-10-13 | American Optical Corporation | Trifluoromethyl substituted spirooxazine photochromic dyes |
US4685783A (en) * | 1983-09-07 | 1987-08-11 | The Plessey Company P.L.C. | Polychromic tetracyclo-spiro-adamatylidene derivatives, and polychromic lens incorporating said compounds |
US4637698A (en) * | 1983-11-04 | 1987-01-20 | Ppg Industries, Inc. | Photochromic compound and articles containing the same |
CA1246565A (en) * | 1984-07-06 | 1988-12-13 | Shinichi Yamamoto | Spiro-oxazine compounds and preparation thereof and photochronic shaped article |
US4681412A (en) * | 1984-10-01 | 1987-07-21 | Lemelson Jerome H | Contact lens containing light sensitive material |
JPS6215236A (ja) * | 1985-07-12 | 1987-01-23 | Matsui Shikiso Kagaku Kogyosho:Kk | 熱可逆変色性ポリウレタンフオ−ム |
US4666949A (en) * | 1986-01-31 | 1987-05-19 | Matsui Shikiso Chemical Co., Ltd. | Thermochromic polyurethane foam |
JPH07108953B2 (ja) * | 1987-01-14 | 1995-11-22 | 日本板硝子株式会社 | フオトクロミツク性能を有する樹脂組成物 |
JPS6430744A (en) * | 1987-07-24 | 1989-02-01 | Toray Industries | Reflection preventive article having photochromic property |
-
1987
- 1987-05-22 GB GB878712210A patent/GB8712210D0/en active Pending
-
1988
- 1988-05-16 DE DE3888868T patent/DE3888868T2/de not_active Expired - Lifetime
- 1988-05-16 EP EP88304403A patent/EP0294056B1/en not_active Expired - Lifetime
- 1988-05-16 AT AT88304403T patent/ATE104066T1/de not_active IP Right Cessation
- 1988-05-16 AU AU16175/88A patent/AU601580B2/en not_active Ceased
- 1988-05-16 ES ES88304403T patent/ES2054804T3/es not_active Expired - Lifetime
- 1988-05-19 US US07/195,873 patent/US4889413A/en not_active Expired - Lifetime
- 1988-05-19 ZA ZA883554A patent/ZA883554B/xx unknown
- 1988-05-20 CA CA000567372A patent/CA1339838C/en not_active Expired - Lifetime
- 1988-05-20 FI FI882386A patent/FI94961C/fi not_active IP Right Cessation
- 1988-05-20 NZ NZ224721A patent/NZ224721A/xx unknown
- 1988-05-20 JP JP63122168A patent/JP2849386B2/ja not_active Expired - Lifetime
- 1988-05-20 BR BR8802478A patent/BR8802478A/pt not_active IP Right Cessation
- 1988-05-20 MX MX011566A patent/MX171102B/es unknown
Also Published As
Publication number | Publication date |
---|---|
DE3888868D1 (de) | 1994-05-11 |
BR8802478A (pt) | 1988-12-20 |
DE3888868T2 (de) | 1994-08-25 |
US4889413A (en) | 1989-12-26 |
ZA883554B (en) | 1989-04-26 |
MX171102B (es) | 1993-09-30 |
FI94961B (fi) | 1995-08-15 |
ATE104066T1 (de) | 1994-04-15 |
FI882386A0 (fi) | 1988-05-20 |
GB8712210D0 (en) | 1987-06-24 |
AU1617588A (en) | 1988-11-24 |
EP0294056A2 (en) | 1988-12-07 |
EP0294056B1 (en) | 1994-04-06 |
EP0294056A3 (en) | 1989-11-02 |
FI94961C (fi) | 1995-11-27 |
NZ224721A (en) | 1989-10-27 |
CA1339838C (en) | 1998-04-28 |
FI882386A (fi) | 1988-11-23 |
JP2849386B2 (ja) | 1999-01-20 |
AU601580B2 (en) | 1990-09-13 |
JPS6433154A (en) | 1989-02-03 |
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