GB493775A - Polarising layers - Google Patents

Polarising layers

Info

Publication number
GB493775A
GB493775A GB10503/37A GB1050337A GB493775A GB 493775 A GB493775 A GB 493775A GB 10503/37 A GB10503/37 A GB 10503/37A GB 1050337 A GB1050337 A GB 1050337A GB 493775 A GB493775 A GB 493775A
Authority
GB
United Kingdom
Prior art keywords
iodine
ethyl iodide
iodide
diphenyl
bromine
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
Application number
GB10503/37A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Publication of GB493775A publication Critical patent/GB493775A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)

Abstract

The Specification describes the preparation of doubly refracting addition compounds of bromine or iodine or metal salts with various heterocyclic nitrogen bases or their quarternary ammonium compounds, by mixing solutions of the substances concerned. The examples given are: 2 : 5-diphenyl-oxazole with iodine, ferric chloride, or cupric chloride, 2 : 5-diphenyl-oxazole methyl iodide with bromine (all dissolved in glacial acetic acid), or iodine (dissolved in potassium iodide solution) with aqueous solutions of 2-methyl-benzothiazole ethyl iodide, benzo-selenazole ethyl iodide, picoline ethyl iodide, or quinaldine ethyl iodide. Specification 412,179, [Group XX], is referred to.
GB10503/37A 1936-06-12 1937-04-13 Polarising layers Expired GB493775A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE493775X 1936-06-12

Publications (1)

Publication Number Publication Date
GB493775A true GB493775A (en) 1938-10-13

Family

ID=6544622

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10503/37A Expired GB493775A (en) 1936-06-12 1937-04-13 Polarising layers

Country Status (1)

Country Link
GB (1) GB493775A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0403711A1 (en) * 1989-06-19 1990-12-27 Research Frontiers Incorporated Light polarizing materials and suspensions thereof
US5130057A (en) * 1985-06-10 1992-07-14 Research Frontiers Incorporated Light polarizing materials and suspensions thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5130057A (en) * 1985-06-10 1992-07-14 Research Frontiers Incorporated Light polarizing materials and suspensions thereof
EP0403711A1 (en) * 1989-06-19 1990-12-27 Research Frontiers Incorporated Light polarizing materials and suspensions thereof

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