Survey syntheses of dyes
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- Proposals: 5
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Description
Experience Level: Entry
This interesting project surveys expired patents about dichroic dyes for liquid crystal displays. You will determine if the dyes can be synthesized using stock USA precursor chemicals, in one pot, or two pot syntheses.
We will manufacture the dyes.
You will download the .pdf files of the full text of the patents.
You will filter the feasibility of the synthesis examples by the following criteria :
Note that MOST OF THE EXAMPLES DO NOT MEET THESE CRITERIA. If the synthesis example does not meet the criteria, skip it and quickly move on to other examples.
You will write your notes directly onto the pages of the patents. We do not want a paper, report, spreadsheet or other formal document.
SCREENING CRITERIA :
Does this example describe the use of liquid crystals with names similar to : ZLI-1132, 1132, phenylcyclohexanes, Merck 1132 ?
Do any of these dyes have a D.O.P., O.P., Dye order parameter, order parameter greater than 0.73 (or 11)?
Can these dyes be synthesized in simple 1 pot or 2 pot synthesis?
Likewise, are the precursors stock chemicals, available for purchase from USA chemical distributors?
For dyes that satisfy these conditions, you will highlight the actual text in the patent describing the dyes. You will also add the C.A.S. numbers of the significant precursor chemicals and add to the patent document. (In general we do not need the C.A.S. numbers of common solvents, metal catalysts, etc.) It's the arcane substituents that we need help with, to determine their C.A.S. numbers.
You will send the patents back to us, with your notes on the patents.
Note that ZLI-1132 is a eutectic mixture of individual liquid crystals. It is comprised of liquid crystals which are commonly called PCH-3, PCH-5, PCH-7 and another liquid crystal.
This project is divided into the following milestones over 5-7 days :
MILESTONE 1 : Read 4 patents, mark your notes on the patent documents, and return the patents with your notes on them back to us. Complete in 3 days.
MILESTONE 2 : Read 4 patents, mark your notes on the patent documents, and return the patents with your notes on them back to us. Complete in 2 days.
MILESTONE 3 : Read 4 patents, mark your notes on the patent documents, and return the patents with your notes on them back to us. Complete in 1 day.
You will complete the project within approximately 5-7 days.
NOTES :
Chemspider.com, chemexper.com, "pubchem.com", and emolecules.com are good databases to search for stock chemicals from USA chemical distributors.
Why not do one patent, or a few examples from one patent, and forward them to us for comment?
(Note that these dyes date from 1980, and are now part of the public domain, and can be legally synthesized by anyone, anywhere.)
The primary challenge is that these dyes are really obscure, really arcane. In many instances these dyes are so obscure that they are not included in Chemical Abstracts.
We will manufacture the dyes.
You will download the .pdf files of the full text of the patents.
You will filter the feasibility of the synthesis examples by the following criteria :
Note that MOST OF THE EXAMPLES DO NOT MEET THESE CRITERIA. If the synthesis example does not meet the criteria, skip it and quickly move on to other examples.
You will write your notes directly onto the pages of the patents. We do not want a paper, report, spreadsheet or other formal document.
SCREENING CRITERIA :
Does this example describe the use of liquid crystals with names similar to : ZLI-1132, 1132, phenylcyclohexanes, Merck 1132 ?
Do any of these dyes have a D.O.P., O.P., Dye order parameter, order parameter greater than 0.73 (or 11)?
Can these dyes be synthesized in simple 1 pot or 2 pot synthesis?
Likewise, are the precursors stock chemicals, available for purchase from USA chemical distributors?
For dyes that satisfy these conditions, you will highlight the actual text in the patent describing the dyes. You will also add the C.A.S. numbers of the significant precursor chemicals and add to the patent document. (In general we do not need the C.A.S. numbers of common solvents, metal catalysts, etc.) It's the arcane substituents that we need help with, to determine their C.A.S. numbers.
You will send the patents back to us, with your notes on the patents.
Note that ZLI-1132 is a eutectic mixture of individual liquid crystals. It is comprised of liquid crystals which are commonly called PCH-3, PCH-5, PCH-7 and another liquid crystal.
This project is divided into the following milestones over 5-7 days :
MILESTONE 1 : Read 4 patents, mark your notes on the patent documents, and return the patents with your notes on them back to us. Complete in 3 days.
MILESTONE 2 : Read 4 patents, mark your notes on the patent documents, and return the patents with your notes on them back to us. Complete in 2 days.
MILESTONE 3 : Read 4 patents, mark your notes on the patent documents, and return the patents with your notes on them back to us. Complete in 1 day.
You will complete the project within approximately 5-7 days.
NOTES :
Chemspider.com, chemexper.com, "pubchem.com", and emolecules.com are good databases to search for stock chemicals from USA chemical distributors.
Why not do one patent, or a few examples from one patent, and forward them to us for comment?
(Note that these dyes date from 1980, and are now part of the public domain, and can be legally synthesized by anyone, anywhere.)
The primary challenge is that these dyes are really obscure, really arcane. In many instances these dyes are so obscure that they are not included in Chemical Abstracts.
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5 May 2024
United Kingdom
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