GB1421103A – Benzothienofurans and their use as colour-formers for pressure- sensitive recording material
– Google Patents
GB1421103A – Benzothienofurans and their use as colour-formers for pressure- sensitive recording material
– Google Patents
Benzothienofurans and their use as colour-formers for pressure- sensitive recording material
Info
Publication number
GB1421103A
GB1421103A
GB1737474A
GB1737474A
GB1421103A
GB 1421103 A
GB1421103 A
GB 1421103A
GB 1737474 A
GB1737474 A
GB 1737474A
GB 1737474 A
GB1737474 A
GB 1737474A
GB 1421103 A
GB1421103 A
GB 1421103A
Authority
GB
United Kingdom
Prior art keywords
aniline
formula
benzothienofurans
sensitive recording
pressure
Prior art date
1973-04-19
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
GB1737474A
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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.)
1973-04-19
Filing date
1974-04-19
Publication date
1976-01-14
1974-04-19
Application filed by Fuji Photo Film Co Ltd
filed
Critical
Fuji Photo Film Co Ltd
1976-01-14
Publication of GB1421103A
publication
Critical
patent/GB1421103A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T428/00—Stock material or miscellaneous articles
Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
Abstract
1421103 Benzothienofurans FUJI PHOTO FILM CO Ltd 19 April 1974 [19 April 1973] 17374/74 Heading C2C [Also in Division D2] Novel benzothienofuran derivatives having one of the Formulµ IA and IB: or a mixture thereof, wherein A is a benzene or naphthalene ring; R 1 and R 2 are optionally substituted amino groups and X, Y and Z are hydrogen or halogen atoms, or alkyl, aralkyl, alkoxy, aralkoxy, acyloxy, nitro or optionally substituted amino groups, are prepared by condensing a benzothiophenedicarboxylic acid anhydride having the Formula II: with an aniline derivative of the Formula III: and condensing the resulting intermediates of the Formulµ IV and V: with an aniline or α-naphthylamine of the Formula VI: followed by neutralization with an aqueous solution of an alkali. The anhydride (II) and aniline (III) are preferably present in a molar ratio of from 1 : 1 to 1 : 3, as are the intermediates (IV) and (V) and the compound (VI). Each condensation reaction is preferably carried out at a temperature of from 70 to 160 C. The novel compounds may be used as colourformers in pressure-sensitive recording.
GB1737474A
1973-04-19
1974-04-19
Benzothienofurans and their use as colour-formers for pressure- sensitive recording material
Expired
GB1421103A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
JP4440373A
JPS5611594B2
(en)
1973-04-19
1973-04-19
Publications (1)
Publication Number
Publication Date
GB1421103A
true
GB1421103A
(en)
1976-01-14
Family
ID=12690531
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1737474A
Expired
GB1421103A
(en)
1973-04-19
1974-04-19
Benzothienofurans and their use as colour-formers for pressure- sensitive recording material
Country Status (4)
Country
Link
US
(1)
US3930671A
(en)
JP
(1)
JPS5611594B2
(en)
DE
(1)
DE2418953A1
(en)
GB
(1)
GB1421103A
(en)
Family Cites Families (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3331854A
(en)
*
1964-12-14
1967-07-18
American Cyanamid Co
Novel furan and thiophene compounds
ES369513A1
(en)
*
1968-07-15
1971-06-01
Fuji Photo Film Co Ltd
Pressure sensitive copying paper
US3849164A
(en)
*
1970-11-16
1974-11-19
Ncr
Pressure-sensitive record unit comprising a mixture of two chromogenic compounds
1973
1973-04-19
JP
JP4440373A
patent/JPS5611594B2/ja
not_active
Expired
1974
1974-04-17
US
US05/461,769
patent/US3930671A/en
not_active
Expired – Lifetime
1974-04-19
GB
GB1737474A
patent/GB1421103A/en
not_active
Expired
1974-04-19
DE
DE2418953A
patent/DE2418953A1/en
not_active
Withdrawn
Also Published As
Publication number
Publication date
JPS49133114A
(en)
1974-12-20
US3930671A
(en)
1976-01-06
JPS5611594B2
(en)
1981-03-16
DE2418953A1
(en)
1974-11-07
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Legal Events
Date
Code
Title
Description
1976-05-26
PS
Patent sealed [section 19, patents act 1949]
1986-01-02
PCNP
Patent ceased through non-payment of renewal fee
