ES414206A1 - Metodo de preparacion de nuevos compuestos cromogenicos. - Google Patents

Metodo de preparacion de nuevos compuestos cromogenicos.

Info

Publication number
ES414206A1
ES414206A1 ES414206A ES414206A ES414206A1 ES 414206 A1 ES414206 A1 ES 414206A1 ES 414206 A ES414206 A ES 414206A ES 414206 A ES414206 A ES 414206A ES 414206 A1 ES414206 A1 ES 414206A1
Authority
ES
Spain
Prior art keywords
gram molecules
mixture
carboxybenzoyl
methylindole
indole
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
ES414206A
Other languages
English (en)
Spanish (es)
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.)
NCR Voyix Corp
National Cash Register Co
Original Assignee
NCR Corp
National Cash Register Co
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 NCR Corp, National Cash Register Co filed Critical NCR Corp
Publication of ES414206A1 publication Critical patent/ES414206A1/es
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/124Duplicating 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
    • B41M5/132Chemical colour-forming components; Additives or binders therefor
    • B41M5/136Organic colour formers, e.g. leuco dyes
    • B41M5/145Organic colour formers, e.g. leuco dyes with a lactone or lactam ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Indole Compounds (AREA)
  • Color Printing (AREA)
ES414206A 1972-05-12 1973-04-30 Metodo de preparacion de nuevos compuestos cromogenicos. Expired ES414206A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00252785A US3812146A (en) 1972-05-12 1972-05-12 Phthalide

Publications (1)

Publication Number Publication Date
ES414206A1 true ES414206A1 (es) 1976-05-01

Family

ID=22957539

Family Applications (1)

Application Number Title Priority Date Filing Date
ES414206A Expired ES414206A1 (es) 1972-05-12 1973-04-30 Metodo de preparacion de nuevos compuestos cromogenicos.

Country Status (6)

Country Link
US (1) US3812146A (fr)
BE (1) BE799406A (fr)
DE (1) DE2322497C3 (fr)
ES (1) ES414206A1 (fr)
FR (1) FR2184699B1 (fr)
GB (1) GB1379712A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899511A (en) * 1971-08-30 1975-08-12 Polaroid Corp Photographic processes and products employing benzindole phthaleins as optical filter agents
GB1467898A (en) * 1974-04-09 1977-03-23 Ciba Geigy Ag Heterocyclic substituted lactone compounds their manufacture and use
US4075224A (en) * 1976-01-22 1978-02-21 Sterling Drug Inc. 3,5-Bis (indolyl)-5-(indolyl)-2(5H)-furanones
US4189171A (en) * 1977-03-01 1980-02-19 Sterling Drug Inc. Marking systems containing 3-aryl-3-heterylphthalides and 3,3-bis(heteryl)phthalides

Also Published As

Publication number Publication date
GB1379712A (en) 1975-01-08
DE2322497C3 (de) 1979-02-15
FR2184699B1 (fr) 1978-08-04
US3812146A (en) 1974-05-21
BE799406A (fr) 1973-08-31
DE2322497A1 (de) 1973-11-29
DE2322497B2 (de) 1978-06-22
FR2184699A1 (fr) 1973-12-28

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