Thioxanthonecarboxylic acid esters, thioesters and amides

Details Thioxanthonecarboxylic acid esters, thioesters and amides Thioxanthonecarboxylic acid esters, thioesters and amides

1982-06-28

1985-03-19

Brust, Joseph Paul

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

544145, 546202, 548525, 260465D, 260455R, 560 11, 560 12, 560 13, 560 14, 560 17, C07D33516

Patent

active

045060835

ABSTRACT:
Thioxanthonecarboxylic acid esters, thioesters or amides of the formula I ##STR1## in which X and Z are hydrogen or one of the substituents defined in more detail in claim 1 and Y is --OR.sub.1, --SR.sub.1 or --N(R.sub.1)(R.sub.2), in which R.sub.1 is C.sub.1-24 alkyl and R.sub.2 is H or R.sub.1, are suitable, if desired together with amines, as initiators for the photopolymerization of ethylenically unsaturated compounds or for photochemical crosslinking of polyolefines. They are also used an sensitizers for photocrosslinkable polymers. They can be prepared by methods known per se, for example by cyclization of phenylthio-phthalic, -isophthalic or -terephthalic acids, which can be correspondingly substituted, and subsequent reaction with suitable alcohols, thiols or amines.

REFERENCES:
patent: 3642997 (1972-02-01), Shen et al.
patent: 3759807 (1973-09-01), Osborn et al.
patent: 3904647 (1975-09-01), Pfister et al.
patent: 3981887 (1976-09-01), Gante et al.
patent: 4103015 (1978-07-01), Hodson et al.
patent: 4185108 (1980-01-01), Samour et al.
patent: 4348530 (1982-09-01), Kvita et al.
patent: 4385182 (1983-05-01), Fischer et al.
1972-1976 Chem. Substance Index, (of Chemical Abstracts) p. 38465cs.

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