GB1508463A - Dye precursors for copying processes - Google Patents

Dye precursors for copying processes

Info

Publication number
GB1508463A
GB1508463A GB26893/75A GB2689375A GB1508463A GB 1508463 A GB1508463 A GB 1508463A GB 26893/75 A GB26893/75 A GB 26893/75A GB 2689375 A GB2689375 A GB 2689375A GB 1508463 A GB1508463 A GB 1508463A
Authority
GB
United Kingdom
Prior art keywords
substituted
alkyl groups
cycloalkyliden
spirodipyrans
june
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
GB26893/75A
Other languages
English (en)
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Publication of GB1508463A publication Critical patent/GB1508463A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
    • C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D311/78—Ring systems having three or more relevant rings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Color Printing (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
GB26893/75A 1974-06-26 1975-06-25 Dye precursors for copying processes Expired GB1508463A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2430568A DE2430568C3 (de) 1974-06-26 1974-06-26 Spirodipyrane und deren Verwendung als Farbbildner für druckempfindliche Aufzeichnungsmaterialien

Publications (1)

Publication Number Publication Date
GB1508463A true GB1508463A (en) 1978-04-26

Family

ID=5918950

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26893/75A Expired GB1508463A (en) 1974-06-26 1975-06-25 Dye precursors for copying processes

Country Status (8)

Country Link
US (1) US4029677A (US20050065096A1-20050324-C00069.png)
JP (1) JPS5639785B2 (US20050065096A1-20050324-C00069.png)
CH (1) CH597217A5 (US20050065096A1-20050324-C00069.png)
DD (1) DD118085A5 (US20050065096A1-20050324-C00069.png)
DE (1) DE2430568C3 (US20050065096A1-20050324-C00069.png)
FR (1) FR2276307A1 (US20050065096A1-20050324-C00069.png)
GB (1) GB1508463A (US20050065096A1-20050324-C00069.png)
IT (1) IT1040634B (US20050065096A1-20050324-C00069.png)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2611600C2 (de) * 1976-03-19 1986-12-18 Basf Ag, 6700 Ludwigshafen Spirodipyrane und deren Verwendung
DE2737207A1 (de) * 1977-08-18 1979-03-01 Basf Ag Farbbildner fuer kopierverfahren
US4342696A (en) * 1980-10-08 1982-08-03 Armstrong World Industries, Inc. 7-Dimethylamino-3-substituted-2,2'-spirobi[2H-1-benzopyrans]
US4348508A (en) * 1981-06-25 1982-09-07 Armstrong World Industries, Inc. 3-Substituted-7-alkoxy-2,2'-Spirobi[2H-1-benzopyrans]
US4382134A (en) * 1981-10-22 1983-05-03 Armstrong World Industries, Inc. 3-Substituted-7-alkoxy-spiro(2H-1-benzopyran-2,3'-(3H)-naphtho(2,1-B)pyrans)
US4384094A (en) * 1981-10-22 1983-05-17 Armstrong World Industries, Inc. 3-Substituted-7-dialkylamino-spiro(2H-1-benzopyran-2,3'-(3H)-naphtha(2,1-b)pyrans)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL252815A (US20050065096A1-20050324-C00069.png) * 1959-06-19
NL253843A (US20050065096A1-20050324-C00069.png) * 1959-07-15
JPS4833712B1 (US20050065096A1-20050324-C00069.png) * 1969-05-26 1973-10-16
GB1359472A (en) * 1970-09-01 1974-07-10 Agfa Gevaert Photographic recording and reproduction of information
DE2230225C2 (de) * 1972-06-21 1985-01-17 Basf Ag, 6700 Ludwigshafen Neue Chinoxalin-spiropyrane und deren Verwendung als Farbbildner für Kopierverfahren
DD109871A5 (US20050065096A1-20050324-C00069.png) * 1972-07-01 1974-11-20

Also Published As

Publication number Publication date
FR2276307B1 (US20050065096A1-20050324-C00069.png) 1980-06-27
US4029677A (en) 1977-06-14
FR2276307A1 (fr) 1976-01-23
DE2430568C3 (de) 1979-02-08
CH597217A5 (US20050065096A1-20050324-C00069.png) 1978-03-31
DE2430568B2 (de) 1978-06-15
JPS5639785B2 (US20050065096A1-20050324-C00069.png) 1981-09-16
IT1040634B (it) 1979-12-20
JPS5126932A (US20050065096A1-20050324-C00069.png) 1976-03-05
DD118085A5 (US20050065096A1-20050324-C00069.png) 1976-02-12
DE2430568A1 (de) 1976-01-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee