IT8122556A0 - Coloranti triazoici e composizioni di cristalli liquidi fatte con i medesimi. - Google Patents
Coloranti triazoici e composizioni di cristalli liquidi fatte con i medesimi.Info
- Publication number
- IT8122556A0 IT8122556A0 IT8122556A IT2255681A IT8122556A0 IT 8122556 A0 IT8122556 A0 IT 8122556A0 IT 8122556 A IT8122556 A IT 8122556A IT 2255681 A IT2255681 A IT 2255681A IT 8122556 A0 IT8122556 A0 IT 8122556A0
- Authority
- IT
- Italy
- Prior art keywords
- liquid crystal
- crystal compositions
- compositions made
- triazo dyes
- triazo
- Prior art date
Links
- 239000004973 liquid crystal related substance Substances 0.000 title 1
- 239000000203 mixture Substances 0.000 title 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
- C09B35/35—Trisazo dyes in which the tetrazo component is a diamino-azo-aryl compound
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/60—Pleochroic dyes
- C09K19/601—Azoic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Liquid Crystal (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/164,254 US4350603A (en) | 1980-06-30 | 1980-06-30 | Novel tris-azo dyes and liquid crystal compositions made therewith |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8122556A0 true IT8122556A0 (it) | 1981-06-25 |
IT1137260B IT1137260B (it) | 1986-09-03 |
Family
ID=22593660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT22556/81A IT1137260B (it) | 1980-06-30 | 1981-06-25 | Coloranti triazoici e composizioni di cristalli liquidi faatte con imedesimi |
Country Status (7)
Country | Link |
---|---|
US (1) | US4350603A (it) |
JP (1) | JPS5738857A (it) |
DE (1) | DE3125183A1 (it) |
FR (1) | FR2485555A1 (it) |
GB (1) | GB2079770A (it) |
IL (1) | IL62918A0 (it) |
IT (1) | IT1137260B (it) |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0043904A3 (de) * | 1980-07-10 | 1982-03-31 | F. HOFFMANN-LA ROCHE & CO. Aktiengesellschaft | Farbstoffhaltige Mischungen, neue Farbstoffe und deren Verwendung in Flüssigkristallmischungen |
DE3049454A1 (de) | 1980-12-30 | 1982-07-29 | Bayer Ag, 5090 Leverkusen | Fluessigkristallines material enthaltend disazofarbstoffe |
DE3123519A1 (de) * | 1981-06-13 | 1982-12-30 | Bayer Ag, 5090 Leverkusen | Fluessigkristallines material enthaltend azofarbstoffe |
US4401369A (en) * | 1981-10-19 | 1983-08-30 | Electronic Display Systems, Inc. | Class of dichroic dyes for use with liquid crystals |
US4411812A (en) * | 1981-11-12 | 1983-10-25 | General Electric Company | Dichroic liquid crystal compositions made with asymmetric tris-azo dyes |
EP0080153B1 (en) * | 1981-11-16 | 1987-04-08 | Mitsubishi Kasei Corporation | Pleochroic azo dyes, a liquid crystal composition containing the azo dyes and a display device using the liquid crystal composition |
JPS58138767A (ja) * | 1982-02-10 | 1983-08-17 | Hitachi Ltd | 液晶組成物及び表示素子 |
JPS5947261A (ja) * | 1982-09-13 | 1984-03-16 | Nippon Kanko Shikiso Kenkyusho:Kk | 液晶用アゾ色素の二色性改良法 |
EP0098522B1 (en) * | 1982-06-30 | 1989-06-07 | Hitachi, Ltd. | Liquid crystal composition |
JPS594674A (ja) * | 1982-06-30 | 1984-01-11 | Mitsubishi Chem Ind Ltd | ゲスト―ホスト型液晶組成物 |
JPS5993776A (ja) * | 1982-11-18 | 1984-05-30 | Nippon Kanko Shikiso Kenkyusho:Kk | アゾ色素の液晶に対する溶解性の改良方法および液晶用二色性アゾ色素 |
DE3529988A1 (de) * | 1985-08-22 | 1987-02-26 | Basf Ag | Trisazofarbstoffe und deren verwendung in fluessigkristallinen materialien |
DE3639156A1 (de) * | 1986-11-15 | 1988-05-26 | Basf Ag | Trisazofarbstoffe |
US5326865A (en) * | 1990-06-08 | 1994-07-05 | Hercules Incorporated | Arylazo and poly(arylazo) dyes having at least one core radical selected from naphthyl or anthracyl and having at least one 2,3-dihydro-1,3-dialkyl perimidine substituent |
EP2931839B1 (en) | 2012-12-13 | 2017-11-01 | Merck Patent GmbH | Liquid-crystalline medium |
CN112285980A (zh) | 2013-03-05 | 2021-01-29 | 默克专利股份有限公司 | 用于调节光学能量穿透量的装置 |
KR102266840B1 (ko) | 2013-05-08 | 2021-06-18 | 메르크 파텐트 게엠베하 | 광 에너지의 통과를 조절하기 위한 2개의 액정 스위칭 층을 포함하는 장치 |
JP6563384B2 (ja) | 2013-05-24 | 2019-08-21 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフツングMerck Patent Gesellschaft mit beschraenkter Haftung | 二色性色素化合物を含むエネルギー通過調節用デバイス |
KR102254011B1 (ko) | 2013-12-19 | 2021-05-20 | 메르크 파텐트 게엠베하 | 광의 통과를 조절하기 위한 장치 |
DE102015005800A1 (de) | 2015-05-06 | 2016-11-10 | Merck Patent Gmbh | Thiadiazolochinoxalinderivate |
EP3319964B1 (de) | 2015-07-10 | 2020-07-22 | Merck Patent GmbH | Dithioalkylpyrrolopyrrole und ihre verwendung als farbstoffe |
CN109790467B (zh) | 2016-06-28 | 2022-08-09 | 默克专利股份有限公司 | 液晶介质 |
EP3487955B1 (en) | 2016-07-19 | 2020-05-20 | Merck Patent GmbH | Liquid crystalline medium |
WO2019238567A1 (en) | 2018-06-11 | 2019-12-19 | Merck Patent Gmbh | Liquid crystalline medium |
JP7391888B2 (ja) | 2018-06-20 | 2023-12-05 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフツング | 液晶媒体 |
JP7447099B2 (ja) | 2018-09-25 | 2024-03-11 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフツング | アゾ色素 |
JP7439086B2 (ja) | 2018-11-23 | 2024-02-27 | メルク・パテント・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | 二色性色素組成物 |
CN113195683A (zh) | 2018-12-19 | 2021-07-30 | 默克专利股份有限公司 | 用于切换元件的切换层 |
US20220306939A1 (en) | 2019-06-17 | 2022-09-29 | Merck Patent Gmbh | Liquid crystal-based light valve |
EP3839620A1 (en) | 2019-12-16 | 2021-06-23 | Merck Patent GmbH | Device for the regulation of light transmission |
WO2022122871A1 (en) | 2020-12-11 | 2022-06-16 | Merck Patent Gmbh | Device for the regulation of light transmission |
WO2023094404A1 (en) | 2021-11-24 | 2023-06-01 | Merck Patent Gmbh | Liquid crystal medium and liquid crystal display |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH196242A (de) * | 1935-08-17 | 1938-02-28 | Chem Ind Basel | Verfahren zur Herstellung eines neuen Farbstoffpräparates. |
CH194346A (de) * | 1936-04-09 | 1937-11-30 | Chem Ind Basel | Verfahren zur Herstellung eines neuen Derivates eines Azofarbstoffes. |
US3941560A (en) * | 1973-12-07 | 1976-03-02 | American Aniline Products, Inc. | Trisazo polyester materials |
US4145114A (en) * | 1975-06-17 | 1979-03-20 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Pleochroic dyes |
CH594897A5 (it) * | 1976-06-23 | 1978-01-31 | Bbc Brown Boveri & Cie | |
US4128497A (en) * | 1976-09-09 | 1978-12-05 | General Electric Company | Dichroic liquid crystal compositions |
US4128496A (en) * | 1976-09-09 | 1978-12-05 | General Electric Company | Dichroic liquid crystal compositions |
US4122027A (en) * | 1976-11-08 | 1978-10-24 | General Electric Company | Dichroic liquid crystal composition with 4,4-bis (substituted naphthylazo)azobenzene dichroic dyes |
US4141627A (en) * | 1977-01-06 | 1979-02-27 | Rca Corporation | Electro-optic device |
US4153343A (en) * | 1977-06-09 | 1979-05-08 | Rca Corporation | Liquid crystal dyestuffs and electro-optic devices incorporating same |
US4116861A (en) * | 1977-08-18 | 1978-09-26 | General Electric Company | Dichroic liquid crystal compositions |
-
1980
- 1980-06-30 US US06/164,254 patent/US4350603A/en not_active Expired - Lifetime
-
1981
- 1981-05-20 IL IL62918A patent/IL62918A0/xx unknown
- 1981-05-22 GB GB8115775A patent/GB2079770A/en not_active Withdrawn
- 1981-06-25 IT IT22556/81A patent/IT1137260B/it active
- 1981-06-26 DE DE19813125183 patent/DE3125183A1/de not_active Withdrawn
- 1981-06-30 FR FR8112853A patent/FR2485555A1/fr not_active Withdrawn
- 1981-06-30 JP JP10071281A patent/JPS5738857A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
GB2079770A (en) | 1982-01-27 |
JPS5738857A (en) | 1982-03-03 |
FR2485555A1 (fr) | 1981-12-31 |
IT1137260B (it) | 1986-09-03 |
IL62918A0 (en) | 1981-07-31 |
DE3125183A1 (de) | 1982-03-11 |
US4350603A (en) | 1982-09-21 |
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