GB998655A - Electrolytic marking medium - Google Patents
Electrolytic marking mediumInfo
- Publication number
- GB998655A GB998655A GB35842/61A GB3584261A GB998655A GB 998655 A GB998655 A GB 998655A GB 35842/61 A GB35842/61 A GB 35842/61A GB 3584261 A GB3584261 A GB 3584261A GB 998655 A GB998655 A GB 998655A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- alkyl
- aryl
- referred
- sodium
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/20—Duplicating or marking methods; Sheet materials for use therein using electric current
- B41M5/205—Duplicating or marking methods; Sheet materials for use therein using electric current and an eroding electrode
Landscapes
- Printing Plates And Materials Therefor (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
Abstract
3,4 - Dihydroxybetaphenylpropionic acid is prepared by reducing caffeic acid (i.e. the corre sponding acrylic acid) using hydrogen over a palladium on charcoal catalyst. Specification 579,350, 585,739, 641,256, 682,063 and 966,869 are referred to.ALSO:An electrolytic recording medium comprises an impregnated sheet, e.g. of paper, containing at least one compound: <FORM:0998655/D1-D2/1> in an electrolytically conducting solution. In the formulae: Ra, Rb and Rc may be alkyl, aryl, -NH2, -ORe, -O,CO,Re or H; Re may be alkyl, aryl or a carbon chain terminated by carboxyl, amino or other functional group; Rd may be <FORM:0998655/D1-D2/2> -NH-Rj-, or any (-CRfRg-)n group where Rh may be H alkyl or aryl, Rj may be alkylene or arylene (e.g. -CH2-), n = 1, 2, 3.... Rf or Rg may be H, alkyl, aryl, NH2, OH, or other substituent. Specific compounds named are 3, 4-dihydroxyphenylacetic acid, 3, 4-dihydroxy-betaphenylpropionic acid, and 3, 4-dihydroxyamiline-N-methylsulphonic acid. The solution contains an electrolyte, which may be a chloride, bromide or nitrate of sodium, calcium, potassium, lithium, magnesium, rubidium or caesiun. It may also contain: another acid, e.g. sulphuric or citric, to give a pH of 1.0 to 3.5; a stabilizer, e.g. thiourea, an alkyl derivative of thioura or dithiobiuret; an oxidizing agent, e.g. sodium chlorate; and an anti-fringing agent, e.g. monosodium phosphate Specifications 579,350, 585,739, 641,256, 682,063 and 966,869 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US6242360A | 1960-10-13 | 1960-10-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB998655A true GB998655A (en) | 1965-07-21 |
Family
ID=22042391
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35842/61A Expired GB998655A (en) | 1960-10-13 | 1961-10-05 | Electrolytic marking medium |
Country Status (2)
Country | Link |
---|---|
US (1) | US3123542A (en) |
GB (1) | GB998655A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3342704A (en) * | 1964-07-03 | 1967-09-19 | Hogan Faximile Corp | Electrolytic recording medium containing a polynuclear phenol |
US3344044A (en) * | 1964-07-03 | 1967-09-26 | Hogan Faximile Corp | Electrolytic recording medium containing a quaternary ammonium compounds |
US3342705A (en) * | 1964-07-03 | 1967-09-19 | Hogan Faximile Corp | Electrolytic recording medium containing a halogenated polyhydric phenol |
US3341431A (en) * | 1964-07-03 | 1967-09-12 | Hogan Faximile Corp | Electrolytic recording medium containing a phenolic ether |
US3344043A (en) * | 1964-07-03 | 1967-09-26 | Hogan Fazimile Corp | Electrolytic recording medium containing a hydroxynapthoic acid |
US3632430A (en) * | 1968-06-04 | 1972-01-04 | Hogan Faximile Corp | Nonblocking electrolytic recording medium |
MA49521A (en) | 2017-06-28 | 2020-05-06 | National Institutes For Quantum And Radiological Science And Tech | NANOPARTICLE, AGENT OF CONTRAST FOR MAGNETIC RESONANCE IMAGING CONTAINING IT, AND LIGAND COMPOUND |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2339267A (en) * | 1940-04-15 | 1944-01-18 | Faximile Inc | Electrolytic recording |
US3024173A (en) * | 1960-01-26 | 1962-03-06 | Hogan Faximile Corp | Electrolytic recording medium |
-
0
- US US3123542D patent/US3123542A/en not_active Expired - Lifetime
-
1961
- 1961-10-05 GB GB35842/61A patent/GB998655A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3123542A (en) | 1964-03-03 |
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