IT1104739B - Carbonless or thermographic copying material - contg. tris:amino-phenylmethane leuco dyestuff developing intense light-fast colour - Google Patents

Carbonless or thermographic copying material - contg. tris:amino-phenylmethane leuco dyestuff developing intense light-fast colour

Info

Publication number
IT1104739B
IT1104739B IT4976178A IT4976178A IT1104739B IT 1104739 B IT1104739 B IT 1104739B IT 4976178 A IT4976178 A IT 4976178A IT 4976178 A IT4976178 A IT 4976178A IT 1104739 B IT1104739 B IT 1104739B
Authority
IT
Italy
Prior art keywords
tris
carbonless
phenylmethane
contg
amino
Prior art date
Application number
IT4976178A
Other languages
Italian (it)
Other versions
IT7849761A0 (en
Original Assignee
Ciba Geigy 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
Priority claimed from CH718077A external-priority patent/CH626568A5/de
Priority claimed from CH419678A external-priority patent/CH634259A5/en
Application filed by Ciba Geigy Ag filed Critical Ciba Geigy Ag
Publication of IT7849761A0 publication Critical patent/IT7849761A0/en
Application granted granted Critical
Publication of IT1104739B publication Critical patent/IT1104739B/en

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Abstract

Material contains substd. tris-aminophenyl-methane cpd(s). of formula (I) as colour former (in which R1 and R2 are H, lower alkyl, benzyl or Ph; rings A, B, D and E are opt. substd. by halogen, NO2, carboxy, CF3 or lower alkyl or alkoxy (carbonyl)). (I) are (almost) colourless and give intense violet, blue and green colours having excellent light fastness with an acid developer. Blue, marine blue, grey or black colours can be obtd. using a mixt. with other colour formers.
IT4976178A 1977-06-10 1978-06-08 Carbonless or thermographic copying material - contg. tris:amino-phenylmethane leuco dyestuff developing intense light-fast colour IT1104739B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH718077A CH626568A5 (en) 1977-06-10 1977-06-10
CH419678A CH634259A5 (en) 1978-04-19 1978-04-19 Pressure- or heat-sensitive recording material

Publications (2)

Publication Number Publication Date
IT7849761A0 IT7849761A0 (en) 1978-06-08
IT1104739B true IT1104739B (en) 1985-10-28

Family

ID=25694889

Family Applications (1)

Application Number Title Priority Date Filing Date
IT4976178A IT1104739B (en) 1977-06-10 1978-06-08 Carbonless or thermographic copying material - contg. tris:amino-phenylmethane leuco dyestuff developing intense light-fast colour

Country Status (1)

Country Link
IT (1) IT1104739B (en)

Also Published As

Publication number Publication date
IT7849761A0 (en) 1978-06-08

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