DE3888868D1 - Herstellung von photochromischen Elementen. - Google Patents

Herstellung von photochromischen Elementen.

Info

Publication number
DE3888868D1
DE3888868D1 DE88304403T DE3888868T DE3888868D1 DE 3888868 D1 DE3888868 D1 DE 3888868D1 DE 88304403 T DE88304403 T DE 88304403T DE 3888868 T DE3888868 T DE 3888868T DE 3888868 D1 DE3888868 D1 DE 3888868D1
Authority
DE
Germany
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
Application number
DE88304403T
Other languages
English (en)
Other versions
DE3888868T2 (de
Inventor
Mary Elizabeth Ormsby
William Ramsey Maltman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pilkington Group Ltd
Original Assignee
Pilkington PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pilkington PLC filed Critical Pilkington PLC
Publication of DE3888868D1 publication Critical patent/DE3888868D1/de
Application granted granted Critical
Publication of DE3888868T2 publication Critical patent/DE3888868T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/685Compositions containing spiro-condensed pyran compounds or derivatives thereof, as photosensitive substances
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/72Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
    • G03C1/73Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing organic compounds
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S359/00Optical: systems and elements
    • Y10S359/90Methods

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)
  • Polyurethanes Or Polyureas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Glass Compositions (AREA)
  • Optical Filters (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
DE3888868T 1987-05-22 1988-05-16 Herstellung von photochromischen Elementen. Expired - Lifetime DE3888868T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878712210A GB8712210D0 (en) 1987-05-22 1987-05-22 Photochromic articles

Publications (2)

Publication Number Publication Date
DE3888868D1 true DE3888868D1 (de) 1994-05-11
DE3888868T2 DE3888868T2 (de) 1994-08-25

Family

ID=10617809

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3888868T Expired - Lifetime DE3888868T2 (de) 1987-05-22 1988-05-16 Herstellung von photochromischen Elementen.

Country Status (14)

Country Link
US (1) US4889413A (de)
EP (1) EP0294056B1 (de)
JP (1) JP2849386B2 (de)
AT (1) ATE104066T1 (de)
AU (1) AU601580B2 (de)
BR (1) BR8802478A (de)
CA (1) CA1339838C (de)
DE (1) DE3888868T2 (de)
ES (1) ES2054804T3 (de)
FI (1) FI94961C (de)
GB (1) GB8712210D0 (de)
MX (1) MX171102B (de)
NZ (1) NZ224721A (de)
ZA (1) ZA883554B (de)

Families Citing this family (84)

* Cited by examiner, † Cited by third party
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
AU718996B2 (en) * 1995-12-18 2000-05-04 Carl Zeiss Vision Australia Holdings Ltd Laminate wafers
AUPN718195A0 (en) * 1995-12-18 1996-01-18 Sola International Holdings Ltd Laminate wafers
US5744070A (en) * 1995-12-20 1998-04-28 Transitions Optical, Inc. Photochromic substituted naphthopyran compounds
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
US5723072A (en) * 1996-06-17 1998-03-03 Ppg Industries, Inc. Photochromic heterocyclic fused indenonaphthopyrans
ES2198698T3 (es) 1997-02-21 2004-02-01 Ppg Industries Ohio, Inc. Recubrimiento de poliuretano fotocromico y articulos que contienen tal recubrimiento.
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
AU2004270746B2 (en) 2003-09-09 2010-12-02 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
US11591436B2 (en) 2004-09-01 2023-02-28 Ppg Industries Ohio, Inc. Polyurethane article and methods of making the same
US11248083B2 (en) 2004-09-01 2022-02-15 Ppg Industries Ohio, Inc. Aircraft windows
US11149107B2 (en) 2004-09-01 2021-10-19 Ppg Industries Ohio, Inc. Polyurethanes, articles and coatings prepared therefrom and methods of making the same
US20090280709A1 (en) 2004-09-01 2009-11-12 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
US20090280329A1 (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
US9598527B2 (en) 2004-09-01 2017-03-21 Ppg Industries Ohio, Inc. Polyurethanes, articles and coatings prepared therefrom and methods of making the same
EP1874984A2 (de) 2005-03-04 2008-01-09 Vision-Ease Lens, Inc. Formungsverfahren für mit verschiedenen filmmaterialien beschichtete polymer-wafer
JP4715846B2 (ja) * 2005-07-25 2011-07-06 トヨタ自動車株式会社 発電装置
US20070259117A1 (en) * 2006-05-04 2007-11-08 Bayer Materialscience Llc Article having photochromic properties and process for its manufacture
WO2007131155A2 (en) 2006-05-05 2007-11-15 Prc-Desoto International, Inc. : sealant and electrical potting formulations comprising thioether-functional oligometric polythiols
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
EP2416203B1 (de) * 2009-03-31 2023-09-13 Hoya Corporation System zur herstellung einer photochromen linse, vorrichtung zur herstellung einer photochromen linse, programm zur herstellung einer photochromen linse, aufzeichnungsmedium mit darauf aufgezeichnetem programm zur herstellung einer photochromen linse sowie verfahren zur herstellung einer photochromen linse
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
BR112014032532A2 (pt) 2012-06-25 2017-06-27 3M Innovative Properties Co dispositivos para revestimento com superfícies de contorno
EP2866064B1 (de) * 2012-06-26 2017-08-09 Mitsui Chemicals, Inc. Polymerisierbare zusammensetzung für ein optisches material sowie aus dieser zusammensetzung gewonnenes optisches material und kunststofflinse
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
KR101998044B1 (ko) 2013-10-11 2019-07-08 트랜지션즈 옵티칼 인코포레이티드 알로파네이트 보호 코팅을 갖는 광색성 광학 제품 및 그의 제조 방법
EP3071401B9 (de) 2013-11-20 2018-03-14 Transitions Optical, Inc. Verfahren zur herstellung einer photochromischen segmentierten multifokalen linse
CN105934458A (zh) * 2014-02-03 2016-09-07 三井化学株式会社 光学材料用聚合性组合物、由该组合物得到的光学材料及塑料透镜
US10423061B2 (en) 2015-09-03 2019-09-24 Transitions Optical, Inc. Multilayer photochromic articles
CN110537114B (zh) 2017-03-01 2023-07-21 杨格制造公司杨格光学器件 含光致变色聚(脲-氨基甲酸酯)的光学制品
US20210040280A1 (en) 2018-01-25 2021-02-11 Nanogate Se Self-supporting photochromic polyurethane film, method of manufacturing the film, article comprising said film
JPWO2019198664A1 (ja) 2018-04-12 2021-04-30 株式会社トクヤマ フォトクロミック光学物品及びその製造方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
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 (de) * 1971-11-20 1977-09-03
GB1446586A (en) * 1973-07-30 1976-08-18 Ici Ltd Thermoplastic polyurethanes mixed with ehtylene copolymers
DD116520A1 (de) * 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

Also Published As

Publication number Publication date
FI94961C (fi) 1995-11-27
FI882386A (fi) 1988-11-23
ZA883554B (en) 1989-04-26
ATE104066T1 (de) 1994-04-15
MX171102B (es) 1993-09-30
AU601580B2 (en) 1990-09-13
AU1617588A (en) 1988-11-24
NZ224721A (en) 1989-10-27
BR8802478A (pt) 1988-12-20
US4889413A (en) 1989-12-26
EP0294056A3 (en) 1989-11-02
GB8712210D0 (en) 1987-06-24
EP0294056A2 (de) 1988-12-07
FI882386A0 (fi) 1988-05-20
JPS6433154A (en) 1989-02-03
DE3888868T2 (de) 1994-08-25
FI94961B (fi) 1995-08-15
ES2054804T3 (es) 1994-08-16
JP2849386B2 (ja) 1999-01-20
CA1339838C (en) 1998-04-28
EP0294056B1 (de) 1994-04-06

Similar Documents

Publication Publication Date Title
DE3888868D1 (de) Herstellung von photochromischen Elementen.
ATE70292T1 (de) Auf polyurethan basierende zusammensetzungen, die die herstellung durch kalandrieren von biologisch abbaubaren materialien ermoeglichen.
KR940014225A (ko) 주변 이형재를 결합시키기 위해 창유리를 처리하는 방법
EP0755953A3 (de) Niedrigviskose Polymerpolyole, ein Verfahren zu ihrer Herstellung sowie ihre Verwendung zur Herstellung von Polyurethanschaumstoffen
DE59008385D1 (de) Verwendung von polyesterpolyolen enthaltenden reaktionsmischungen bei der herstellung von massiven polyurethanwerkstoffen nach dem giessverfahren.
EP0400935A3 (de) Flammengeschützte und glasfaserverstärkte Polyesterharzformmassen
KR900011617A (ko) 조립용 포팅된 글래스 플레이트 및 이의 제조방법
KR930019763A (ko) 폴리아세탈 수지 조성물의 제조방법
ATE44752T1 (de) Bei der herstellung von verbundsicherheitsscheiben verwendete klebschicht sowie eine solche schicht enthaltende verbundsicherheitsscheiben.
ATE39121T1 (de) Reversibel blockierte katalysatoren enthaltende polyisocyanat-zubereitungen, ein verfahren zu ihrer herstellung, ihre verwendung zur herstellung von polyurethankunststoffen, sowie anlagerungsprodukte von sulfonylisocyanaten an katalysatoren mit zinn(ii)- bzw. zinn(iv)carboxylat-struktur.
DE3685482D1 (de) Verfahren zur herstellung von verklebungen.
US4131606A (en) Poly(lactone)urethane curable at [castable] ambient temperature [curable polyurethane interlayer] using butylstannoic acid catalyst
EP0149192A3 (de) Epoxydiertes E.P.D.M. als Modifizierungsmittel für die Schlagfestigkeit von aromatischem Polyester
EP0348760A3 (de) Verfahren zur Herstellung von Formkörpern und die nach diesem Verfahren erhaltenen Formkörper
EP0198175A3 (de) Herstellung eines Präpolymers
ES8801777A1 (es) Dispositivo para la fabricacion de vidrieras de seguridad.
EP0378315A3 (de) Verfahren zur Herstellung eines flammhemmenden triallylisocyanurat-Prepolymers
EP0386511A3 (de) Flammwidrige Polydiorganosiloxan-Polycarbonat-Blockcopolymere
DE3784398D1 (de) Verfahren zur herstellung von thermoplastischen polyurethanen.
DK0553495T3 (da) Pigmenterede formmasser på basis af umættet polyester.
EP0270000A3 (de) Thermoplastische Formmassen auf der Basis von Polyestern und Polyamiden
EP0337206A3 (de) Mischungen von thermoplastischen Poly(ester)carbonaten mit thermoplastischen Polyurethanen
DE59812021D1 (de) Polyurethane mit Kohlenhydratbausteinen
ATE109181T1 (de) Schlagzäh modifizierte thermoplastische polyurethan-formmassen, verfahren zu ihre herstellung und ihre verwendung.
DE69410379T2 (de) Verfahren zur Herstellung von Chloropren

Legal Events

Date Code Title Description
8364 No opposition during term of opposition