ES411828A1 - Fluoran compounds and their use in pressure-sensitive copying paper - Google Patents
Fluoran compounds and their use in pressure-sensitive copying paperInfo
- Publication number
- ES411828A1 ES411828A1 ES411828A ES411828A ES411828A1 ES 411828 A1 ES411828 A1 ES 411828A1 ES 411828 A ES411828 A ES 411828A ES 411828 A ES411828 A ES 411828A ES 411828 A1 ES411828 A1 ES 411828A1
- Authority
- ES
- Spain
- Prior art keywords
- optionally substituted
- formula
- ring
- aralkyl
- see 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
Links
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
- C09B11/00—Diaryl- or thriarylmethane dyes
- C09B11/04—Diaryl- or thriarylmethane dyes derived from triarylmethanes, i.e. central C-atom is substituted by amino, cyano, alkyl
- C09B11/10—Amino derivatives of triarylmethanes
- C09B11/24—Phthaleins containing amino groups ; Phthalanes; Fluoranes; Phthalides; Rhodamine dyes; Phthaleins having heterocyclic aryl rings; Lactone or lactame forms of triarylmethane dyes
-
- 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
- B41M5/1455—Organic colour formers, e.g. leuco dyes with a lactone or lactam ring characterised by fluoran compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Color Printing (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Abstract
A method of preparing colorless color formers that are compounds of the general formula: ** (See formula) ** where R1 and R2 each independently represent hydrogen, an optionally substituted alkyl, aralkyl or aryl radical or forms part of a heterocyclic ring containing the attached nitrogen atom; R3 represents hydrogen, halogen, nitro, optionally substituted amino or an optionally substituted alkyl, aralkyl or aryl radical; ring D represents a fully reduced, optionally substituted, 5- or 6-membered heterocyclic ring; and ring B may optionally contain one or more other substituents, the method of which comprises reacting a compound of formula: ** (See formula) ** where R1, R2 and R3 have the meaning indicated above, with a compound of the formula: ** (See formula) ** where B and D have the meanings already indicated and R5 represents hydrogen or lower alkyl, the reaction being carried out in the presence of a suitable condensing agent. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB785072A GB1420331A (en) | 1972-02-21 | 1972-02-21 | Fluoran compounds and their use in pressure-sensitive copying paper |
Publications (1)
Publication Number | Publication Date |
---|---|
ES411828A1 true ES411828A1 (en) | 1976-05-16 |
Family
ID=9840994
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES411828A Expired ES411828A1 (en) | 1972-02-21 | 1973-02-20 | Fluoran compounds and their use in pressure-sensitive copying paper |
ES75442128A Expired ES442128A1 (en) | 1972-02-21 | 1975-10-27 | Fluoran compounds and their use in pressure-sensitive copying paper |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES75442128A Expired ES442128A1 (en) | 1972-02-21 | 1975-10-27 | Fluoran compounds and their use in pressure-sensitive copying paper |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS4896624A (en) |
BE (1) | BE795747A (en) |
BR (1) | BR7301290D0 (en) |
DE (1) | DE2308638A1 (en) |
ES (2) | ES411828A1 (en) |
FR (1) | FR2173103A1 (en) |
GB (1) | GB1420331A (en) |
IT (1) | IT984384B (en) |
-
0
- BE BE795747D patent/BE795747A/en unknown
-
1972
- 1972-02-21 GB GB785072A patent/GB1420331A/en not_active Expired
-
1973
- 1973-02-20 IT IT6742373A patent/IT984384B/en active
- 1973-02-20 JP JP1981573A patent/JPS4896624A/ja active Pending
- 1973-02-20 ES ES411828A patent/ES411828A1/en not_active Expired
- 1973-02-21 FR FR7306078A patent/FR2173103A1/fr not_active Withdrawn
- 1973-02-21 DE DE19732308638 patent/DE2308638A1/en active Pending
- 1973-02-21 BR BR129073A patent/BR7301290D0/en unknown
-
1975
- 1975-10-27 ES ES75442128A patent/ES442128A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE795747A (en) | 1973-08-21 |
ES442128A1 (en) | 1977-04-01 |
IT984384B (en) | 1974-11-20 |
JPS4896624A (en) | 1973-12-10 |
FR2173103A1 (en) | 1973-10-05 |
GB1420331A (en) | 1976-01-07 |
DE2308638A1 (en) | 1973-09-06 |
BR7301290D0 (en) | 1974-07-25 |
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