GB1161651A - Chromogenic Compounds for use in Pressure-Sensitive Record Material - Google Patents

Chromogenic Compounds for use in Pressure-Sensitive Record Material

Info

Publication number
GB1161651A
GB1161651A GB3494/68A GB349468A GB1161651A GB 1161651 A GB1161651 A GB 1161651A GB 3494/68 A GB3494/68 A GB 3494/68A GB 349468 A GB349468 A GB 349468A GB 1161651 A GB1161651 A GB 1161651A
Authority
GB
United Kingdom
Prior art keywords
indolyl
pressure
record material
sensitive record
chromogenic compounds
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
GB3494/68A
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 GB1161651A publication Critical patent/GB1161651A/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
    • B41M5/145—Organic 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)
  • Color Printing (AREA)

Abstract

1,161,651. Indolyl pyromellitides. NATIONAL CASH REGISTER CO. 23 Jan., 1968 [30 Jan., 1967], No. 3494/68. Heading C2C. [Also in Division D2] Novel indolyl pyromellitides of the Formula I or II wherein R 1 to R 4 are optionally substituted indolyl or dialkylaminophenyl radicals, such that at least one of the substituents R 1 and R 2 and at least one of the substituents R 3 and R 4 are indolyl radicals, are obtained by reacting pyromellitic anhydride with the appropriate indoles and/or dialkylanilines and cyclizing the keto acids so formed by further reaction with the indoles. The compounds have chromogenic properties (see Division D2].
GB3494/68A 1967-01-30 1968-01-23 Chromogenic Compounds for use in Pressure-Sensitive Record Material Expired GB1161651A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US61249767A 1967-01-30 1967-01-30
US82154069A 1969-01-24 1969-01-24

Publications (1)

Publication Number Publication Date
GB1161651A true GB1161651A (en) 1969-08-20

Family

ID=27086773

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3494/68A Expired GB1161651A (en) 1967-01-30 1968-01-23 Chromogenic Compounds for use in Pressure-Sensitive Record Material

Country Status (3)

Country Link
US (2) US3491117A (en)
FR (1) FR1554989A (en)
GB (1) GB1161651A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3491117A (en) * 1967-01-30 1970-01-20 Ncr Co Indole substituted pyromellitides
CA944559A (en) * 1970-09-24 1974-04-02 Makoto Yoshida Recording sheet and color developer therefor
GB1330984A (en) * 1970-09-28 1973-09-19 Fuji Photo Film Co Ltd Colour-developer compositions
US3769066A (en) * 1971-06-22 1973-10-30 Ncr Co Replacement of capsule contents
US3942903A (en) * 1973-02-27 1976-03-09 Glasrock Products, Inc. Unitary porous themoplastic writing nib
JPS5748397B2 (en) * 1973-10-12 1982-10-15
US4020056A (en) * 1975-04-10 1977-04-26 Ncr Corporation Di-vinyl phthalides color formers
US4026883A (en) * 1975-04-10 1977-05-31 Ncr Corporation Derivatives of dianhydrides as vinyl color formers
JPS6054196B2 (en) * 1978-08-09 1985-11-29 富士写真フイルム株式会社 record sheet
US4343493A (en) * 1980-08-29 1982-08-10 Sterling Drug Inc. Duplicating and marking systems
US4417059A (en) * 1980-08-29 1983-11-22 Sterling Drug Inc. Diphenylamino and indolyl substituted pyromellitides
EP0261780A3 (en) * 1986-08-22 1989-07-19 Minnesota Mining And Manufacturing Company Hidden image system
US5932285A (en) * 1995-02-17 1999-08-03 Medlogic Global Corporation Encapsulated materials
US5849412A (en) * 1995-02-17 1998-12-15 Medlogic Global Corporation Encapsulated materials
US5655609A (en) * 1996-01-16 1997-08-12 Baroid Technology, Inc. Extension and retraction mechanism for subsurface drilling equipment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505486A (en) * 1944-01-31 1950-04-25 Ncr Co Process of making pressure sensitive record material
US3336337A (en) * 1961-08-31 1967-08-15 Burroughs Corp Chromogenous tetrakis(aminophenyl) derivatives of benzodifuran
US3244549A (en) * 1961-08-31 1966-04-05 Burroughs Corp Manifold sheets coated with lactone and related chromogenous compounds and reactive phenolics and method of marking
US3268537A (en) * 1961-08-31 1966-08-23 Burroughs Corp Chromogenous aminophenyl derivatives of benzodifurandione
US3455721A (en) * 1964-12-21 1969-07-15 Ncr Co Color sensitized record material comprising phenolic resin and acid type mineral
US3491117A (en) * 1967-01-30 1970-01-20 Ncr Co Indole substituted pyromellitides

Also Published As

Publication number Publication date
US3540914A (en) 1970-11-17
US3491117A (en) 1970-01-20
FR1554989A (en) 1969-01-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees