GB460599A - Improvements in colour photography - Google Patents

Improvements in colour photography

Info

Publication number
GB460599A
GB460599A GB2141835A GB2141835A GB460599A GB 460599 A GB460599 A GB 460599A GB 2141835 A GB2141835 A GB 2141835A GB 2141835 A GB2141835 A GB 2141835A GB 460599 A GB460599 A GB 460599A
Authority
GB
United Kingdom
Prior art keywords
iso
acetic acid
colour photography
hydroxylamine
terephthaloylacetic
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
GB2141835A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB2141835A priority Critical patent/GB460599A/en
Publication of GB460599A publication Critical patent/GB460599A/en
Expired legal-status Critical Current

Links

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)

Abstract

Iso-oxazolones are prepared by reacting acyl-acetic acid esters with hydroxylamine in alkaline solution. For example, phenylene-bis-iso-oxazolone is formed by treating terephthaloylacetic acid ester with hydroxylamine hydrochloride in caustic soda and precipitating the product with acetic acid.
GB2141835A 1935-07-27 1935-07-27 Improvements in colour photography Expired GB460599A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2141835A GB460599A (en) 1935-07-27 1935-07-27 Improvements in colour photography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2141835A GB460599A (en) 1935-07-27 1935-07-27 Improvements in colour photography

Publications (1)

Publication Number Publication Date
GB460599A true GB460599A (en) 1937-01-27

Family

ID=10162604

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2141835A Expired GB460599A (en) 1935-07-27 1935-07-27 Improvements in colour photography

Country Status (1)

Country Link
GB (1) GB460599A (en)

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