Interested in photography? At matthughesphoto.com you will find all the information about Pyrocatechol P-Phenylenediamine Photographic Patent and much more about photography.
Stabilized p-phenylenediamine-type photographic color …
- https://pubchem.ncbi.nlm.nih.gov/patent/US-2005037294-A1
- US-2005037294-A1 chemical patent summary. ... Stabilized p-phenylenediamine-type photographic color developers in free base form. Cite. Download. Patent: US-2005037294-A1: Inventor: HUDNALL PHILLIP MONTGOMERY (US) Date: Priority . 2000/10/19. This web page summarizes information in PubChem about patent US-2005037294-A1. This includes …
US Patent for Method for preparing an acid salt of p …
- https://patents.justia.com/patent/6623914
- A process for purifying p-phenylenediamine color developers in their free-base form. The process includes subjecting a solution containing p-phenylenediamine-type free base color developer to short path distillation which includes at least one of falling film evaporator, thin film evaporator, wiped film evaporator, or short-path evaporator.
US Patent Application for Stabilized p-phenylenediamine …
- https://patents.justia.com/patent/20020072017
- CROSS REFERENCE TO RELATED APPLICATIONS. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] This invention pertains to p-phenylenediamine-type photographic color developer compositions and methods for making p-phenylenediamine-type photographic color developers in their free-base form.
EP0052511A1 - Production of p-phenylenediamine
- https://patents.google.com/patent/EP0052511A1/en
- A 1,3-diphenyltriazene rearrangement product obtained by contacting an aniline solution of the triazene with 0.4-2% of a strong acid, preferably HN0 3 , which product, at 25-40°C, is a two-phase liquid having (1) an organic phase in which p-aminoazobenzene and water are dissolved in aniline, and (2) an aqueous phase, is separated into organic and aqueous phases, and the organic …
KR20180052323A - METHOD OF PREPARING p …
- https://patents.google.com/patent/KR20180052323A/en
- Provided is a method for producing paraphenylenediamine. More specifically, the present invention relates to a method for producing paraphenylenediamine, comprising the following steps: carrying out a chlorination reaction using a by-product from a production process of dimethyl terephthalate; preparing terephthalamide through an amidation reaction using the …
p-Phenylenediamine - Wikipedia
- https://en.wikipedia.org/wiki/P-Phenylenediamine
- p-Phenylenediamine (PPD) is an organic compound with the formula C 6 H 4 (NH 2) 2.This derivative of aniline is a white solid, but samples can darken due to air oxidation. It is mainly used as a component of engineering polymers and composites like kevlar.It is also an ingredient in hair dyes and is occasionally used as a substitute for henna
PPD-PC - p-phenylenediamine-pyrocatechol
- https://www.allacronyms.com/PPD-PC/p-phenylenediamine-pyrocatechol
- Share this. Have you found the page useful? Please use the following to spread the word: APA All Acronyms. 2021. PPD-PC - p-phenylenediamine-pyrocatechol.
Manufacture of pyrocatechol - Patent US-3536767-A
- https://pubchem.ncbi.nlm.nih.gov/patent/US-3536767-A
- US-3536767-A chemical patent summary.
Improved visualization of neurons labeled with …
- https://www.ncbi.nlm.nih.gov/pubmed/6348427
- 1. J Neurosci Methods. 1983 Jun;8(2):161-9. Improved visualization of neurons labeled with horseradish peroxidase: silver-intensification of the pyrocatechol/p ...
p-phenylenediamine dihydrochloride and pyrocatechol (PPD-PC)
- https://allie.dbcls.jp/pair/PPD-PC;p-phenylenediamine+dihydrochloride+with+pyrocatechol.html
- p-phenylenediamine dihydrochloride and pyrocatechol: Abbreviation Variation Long Form Variation Pair(Abbreviation/Long Form) Variation No. Year Title Co-occurring Abbreviation; 1 : 1997: Tract-tracing in the nervous system of vertebrates using horseradish peroxidase and its conjugates: tracers, chromogens and stabilization for light and ...
Found information about Pyrocatechol P-Phenylenediamine Photographic Patent? We have a lot more interesting things about photography. Look at similar pages for example.