Recording materials containing chromenoindoles

Details Recording materials containing chromenoindoles Recording materials containing chromenoindoles

1979-03-01

1980-09-02

Hess, Bruce H.

Textiles: manufacturing

2603191, 427151, 428307, 428537, 428914, B41M 516, B41M 522

Patent

active

042203562

ABSTRACT:
A chromenoindole derivative of the following general formula (I): ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, each represents an alkyl group, an alkyl group substituted with one or more of a cyano group, a halogen atom or an alkoxy group, an aralkyl group, a phenyl group or a phenyl group substituted with one or more of an alkyl group or a halogen atom; X represents a hydrogen atom, an alkoxy group, a dialkylamino group, an alkylarylamino group, an alkylaralkylamino group, a diaralkylamino group, an acylamino group, a halogen atom or an alkyl group; Y represents a hydrogen atom, an alkyl group, a halogen atom, an alkoxy group of a nitro group; Z represents an acyl group, or a sulfonyl group; Q.sub.1 and Q.sub.2, which may be the same or different, each represents a hydrogen atom, a lower alkyl group or a halogen atom; and A.sub.1, A.sub.2, A.sub.3 and A.sub.4, which may be the same or different, each represents a halogen atom, an alkyl group or an alkoxy group; which upon contact with an electron acceptor material forms a color with superior light fastness and which is useful as a color former in various recording materials such as pressure-sensitive recording sheets, thermosensitive recording sheets, electrothermosensitive recording sheets, and photosensitive recording sheets.

REFERENCES:
patent: 3509174 (1970-04-01), Lin
patent: 3619239 (1971-11-01), Osada et al.
patent: 3702244 (1972-11-01), Bloom et al.
patent: 3929829 (1975-12-01), Borror
patent: 3995088 (1976-12-01), Garner et al.
patent: 4123439 (1978-10-01), Balli et al.

Affiliated with

Also associated with

Rating

Recording materials containing chromenoindoles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Recording materials containing chromenoindoles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recording materials containing chromenoindoles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1706156