GB1310918A - Indoline-2-spiro-2,-benzo-b-pyrans - Google Patents

Indoline-2-spiro-2,-benzo-b-pyrans

Info

Publication number
GB1310918A
GB1310918A GB2728970A GB2728970A GB1310918A GB 1310918 A GB1310918 A GB 1310918A GB 2728970 A GB2728970 A GB 2728970A GB 2728970 A GB2728970 A GB 2728970A GB 1310918 A GB1310918 A GB 1310918A
Authority
GB
United Kingdom
Prior art keywords
indoline
pyrans
spiro
benzo
nitro
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
GB2728970A
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.)
Compagnie de Saint Gobain SA
Original Assignee
Compagnie de Saint Gobain SA
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 Compagnie de Saint Gobain SA filed Critical Compagnie de Saint Gobain SA
Publication of GB1310918A publication Critical patent/GB1310918A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/685—Compositions containing spiro-condensed pyran compounds or derivatives thereof, as photosensitive substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

1310918 Indoline- 2 - spiro - 2<SP>1</SP> - benzo- (b)- pyrans COMPAGNIE DE SAINT-GOBAIN 5 June 1970 [6 June 1969] 27289/70 Heading C2C Novel 1 - benzyl and 1 - cyclohexyl - 3,3- dimethyl - indoline- 2- spiro- 21 - (61 - nitro - 8<SP>1</SP>- methoxy benzo-(b)-pyrans) having the formulae are prepared by condensing 5-nitro-3-methoxysalicylaldehyde with a 2-methylene-indoline base. The novel compounds are photochromatic.
GB2728970A 1969-06-06 1970-06-05 Indoline-2-spiro-2,-benzo-b-pyrans Expired GB1310918A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6918619A FR2049297A5 (en) 1969-06-06 1969-06-06

Publications (1)

Publication Number Publication Date
GB1310918A true GB1310918A (en) 1973-03-21

Family

ID=9035234

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2728970A Expired GB1310918A (en) 1969-06-06 1970-06-05 Indoline-2-spiro-2,-benzo-b-pyrans

Country Status (6)

Country Link
BE (1) BE751582A (en)
DE (1) DE2027581A1 (en)
FR (1) FR2049297A5 (en)
GB (1) GB1310918A (en)
LU (1) LU61071A1 (en)
NL (1) NL7008081A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5446149A (en) * 1992-12-03 1995-08-29 Pilkington Plc Bridged spiroxazine photochromic compounds
US5446151A (en) * 1992-12-03 1995-08-29 Pilkington Plc Photo reactive spiro-benzoxazine compounds
US5446150A (en) * 1992-12-03 1995-08-29 Pilkington Plc Photochromic spiroxazine compounds

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5446149A (en) * 1992-12-03 1995-08-29 Pilkington Plc Bridged spiroxazine photochromic compounds
US5446151A (en) * 1992-12-03 1995-08-29 Pilkington Plc Photo reactive spiro-benzoxazine compounds
US5446150A (en) * 1992-12-03 1995-08-29 Pilkington Plc Photochromic spiroxazine compounds

Also Published As

Publication number Publication date
LU61071A1 (en) 1971-07-01
FR2049297A5 (en) 1971-03-26
NL7008081A (en) 1970-12-08
BE751582A (en) 1970-12-07
DE2027581A1 (en) 1971-01-28

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees