Process for thermochemical generation of acid and for thermal im

Radiation imagery chemistry: process – composition – or product th – Thermographic process

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

4302701, 430203, 430340, 430336, 430343, G03C 516

Patent

active

055343937

ABSTRACT:
Certain squaric acid derivatives are useful for the thermochemical generation of acid. The squaric acid derivatives may be used in imaging media in conjunction with acid-sensitive materials which undergo a color change when contacted by the acid generated from the squaric acid derivatives. Preferably, the acid-sensitive materials undergo an irreversible color change, so that the image can be fixed by neutralizing all the acid generated with excess base, thereby preventing further color change in the image during long term storage.

REFERENCES:
patent: 3488705 (1970-06-01), Fox et al.
patent: 3723121 (1973-03-01), Hauser et al.
patent: 3745009 (1974-07-01), Jenkins et al.
patent: 3832212 (1974-08-01), Jenkins et al.
patent: 4092146 (1978-05-01), Fischer et al.
patent: 4159387 (1979-06-01), Bellus
patent: 4242440 (1980-12-01), Yee et al.
patent: 4258118 (1981-03-01), Foley et al.
patent: 4258119 (1981-03-01), Cournoyer et al.
patent: 4290950 (1981-09-01), Cournoyer et al.
patent: 4290951 (1981-09-01), Foley et al.
patent: 4290955 (1981-09-01), Cincotta et al.
patent: 4304834 (1981-12-01), Cournoyer et al.
patent: 4307017 (1982-12-01), Cournoyer et al.
patent: 4310673 (1982-01-01), Foley et al.
patent: 4311847 (1982-01-01), Cournoyer et al.
patent: 4316950 (1982-02-01), Cincotta et al.
patent: 4345017 (1982-08-01), Cournoyer et al.
patent: 4380629 (1983-04-01), Yamashita et al.
patent: 4416971 (1983-11-01), Borer et al.
patent: 4429142 (1984-01-01), Cournoyer et al.
patent: 4508811 (1985-04-01), Gravesteijn et al.
patent: 4602263 (1986-07-01), Borrer et al.
patent: 4603101 (1986-07-01), Crivello
patent: 4617402 (1986-10-01), Borrer et al.
patent: 4624904 (1986-11-01), Kazmaier et al.
patent: 4707427 (1987-11-01), Tanaka et al.
patent: 4720449 (1988-01-01), Borrer et al.
patent: 4751163 (1988-06-01), Hagiwara et al.
patent: 4825408 (1989-04-01), Potember et al.
patent: 4826976 (1989-05-01), Borrer et al.
patent: 4833053 (1989-05-01), Wurster
patent: 4916046 (1990-04-01), Doessel
patent: 5118861 (1992-06-01), Jackson et al.
patent: 5153104 (1992-10-01), Rossman et al.
patent: 5278031 (1994-01-01), Boggs et al.
patent: 5401619 (1995-03-01), Boggs et al.
Bou et al., Tetrahedron Letters, 23(3), 361 (1982).
Cohen S. and Cohen, S. G., J. Am. Chem. Soc., 88, 1533 (1966).
Dehmlow et al., Chem. Ber. 113(1), 1-8 (1979).
Dehmlow et al., Chem. Ber. 121(3), 569-71 (1988).
Greene, Theodora W., Protective Groups in Organic Synthesis, New York, Wiley, 1981, p. 326.
Pericas et al., Tetrahedron Letters, (1977), 4437-38.
Reynolds and Drexhage, J. Org. Chem., 42(5), 885-888 (1977).
Sabongi, G. J. Chemical Triggering--Reactions of Potential Utility in Industrial Processes, Plenum Press, New York, New York (1987), pp. 49-51, 68-72, 97-101 and 162-164.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Process for thermochemical generation of acid and for thermal im 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 thermochemical generation of acid and for thermal im, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for thermochemical generation of acid and for thermal im will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1866402

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.