Bleaching and dyeing; fluid treatment and chemical modification – Organic additive for dye composition – dye composition... – Six-membered hetero ring consisting of one nitrogen and five...
Patent
1989-10-06
1992-02-04
Lee, Mary C.
Bleaching and dyeing; fluid treatment and chemical modification
Organic additive for dye composition, dye composition...
Six-membered hetero ring consisting of one nitrogen and five...
544198, 546 16, 546 19, 546184, 546188, C09B 6718, C07D21146, C07D21194, C07D22120
Patent
active
050856693
ABSTRACT:
The invention describes a process for stabilizing a leuco-dye solution in an organic solvent against oxidation in air. In the process, a compound containing at least one 2,2,6,6-tetraalkylpiperidine, 2,2-dialkylpiperidine-6-spiro-cycloalkane or piperidine-2,6-dispiro-cycloalkane grouping is added to the solution. The process is, in particular, used for stabilizing photoresist solutions which, apart from the leuco dye, contain polymerizable compounds and photoinitiators, especially radiation-sensitive trihalomethyl compounds.
REFERENCES:
patent: 3042575 (1962-07-01), Hartler
patent: 4271251 (1981-06-01), Aotanz et al.
patent: 4423139 (1983-12-01), Isbrandt et al.
patent: 4632897 (1986-12-01), Barzynski et al.
patent: 4780393 (1988-10-01), Frommeld
patent: 4940647 (1990-07-01), Frommeld et al.
Haubold et al., Chemical Abstracts, vol. 110, #31445t (1989).
Mayer et al., Chemical Abstracts, vol. 88, #192099a (1978).
Wiezer, Chemical Abstracts, vol. 96, #86493e (1982).
Frommeld Hans-Dieter
Wiezer Hartmut
Hoechst Aktiengesellschaft
Lee Mary C.
Powers Fiona T.
LandOfFree
Process for stabilizing a leuco-dye solution by means of a piper does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for stabilizing a leuco-dye solution by means of a piper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for stabilizing a leuco-dye solution by means of a piper will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-345240