GB1499193A - Indolino-spiropyran compounds useful as colour formers - Google Patents

Indolino-spiropyran compounds useful as colour formers

Info

Publication number
GB1499193A
GB1499193A GB1537475A GB1537475A GB1499193A GB 1499193 A GB1499193 A GB 1499193A GB 1537475 A GB1537475 A GB 1537475A GB 1537475 A GB1537475 A GB 1537475A GB 1499193 A GB1499193 A GB 1499193A
Authority
GB
United Kingdom
Prior art keywords
group
indolino
alkyl
spiropyran compounds
formula
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
GB1537475A
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.)
Hodogaya Chemical Co Ltd
Original Assignee
Hodogaya Chemical Co Ltd
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 Hodogaya Chemical Co Ltd filed Critical Hodogaya Chemical Co Ltd
Publication of GB1499193A publication Critical patent/GB1499193A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
    • B41M5/132—Chemical colour-forming components; Additives or binders therefor
    • B41M5/136—Organic colour formers, e.g. leuco dyes
    • B41M5/15—Spiro-pyrans

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Color Printing (AREA)
  • Indole Compounds (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

1499193 Indolino-spiropyran compounds HODOGAYA CHEMICAL CO Ltd 15 April 1975 [17 April 1974] 15374/75 Heading C2C Novel indolino-spiropyran compounds of the formula wherein R 1 is an alkyl group; R 2 is a hydrogen atom, an alkyl group, an alkoxy group, a halogen atom, a cyano group or a phenyl group; R 3 is an alkyl or benzyl group; R 4 is a benzyl group or a substituted or unsubstituted phenyl group wherein the substituent is an alkyl group; said alkyl groups and the alkyl moiety of said alkoxy group having 1 to 4 carbon atoms, are prepared by reacting an indoline derivative of the formula with a salicylaldehyde derivative of the formula The novel compounds may be used as colour formers.
GB1537475A 1974-04-17 1975-04-15 Indolino-spiropyran compounds useful as colour formers Expired GB1499193A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49042211A JPS50136312A (en) 1974-04-17 1974-04-17

Publications (1)

Publication Number Publication Date
GB1499193A true GB1499193A (en) 1978-01-25

Family

ID=12629677

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1537475A Expired GB1499193A (en) 1974-04-17 1975-04-15 Indolino-spiropyran compounds useful as colour formers

Country Status (3)

Country Link
JP (1) JPS50136312A (en)
DE (1) DE2516383A1 (en)
GB (1) GB1499193A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH594675A5 (en) * 1976-01-30 1978-01-13 Ciba Geigy Ag

Also Published As

Publication number Publication date
JPS50136312A (en) 1975-10-29
DE2516383A1 (en) 1975-10-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee