Functional fluorescent dyes

A compound, methyl technology, applied in the field of fluorescent dyes, can solve the problems of no compatibility, poor solubility, limited, etc., and achieve the effect of improving solubility

Inactive Publication Date: 2005-10-12
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most fluorochromes have poor or limited solubility in certain polymer matrices
For example, most fluorescent dyes have poor or no compatibility with fluoromonomers and polymers
This results in poor color quality, dye bleeding, and little or no color in the produced fluoropolymers
Therefore, fluoropolymers containing dyes generally cannot be used in applications where leaching and toxicity considerations are required (such as food packaging and medical applications)

Method used

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  • Functional fluorescent dyes
  • Functional fluorescent dyes
  • Functional fluorescent dyes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0188] A 600 mL Parr reactor (obtained from Parr Instrument Co., Moline, IL) was charged with MeFBSEA (146.30 g; 0.36 mol), MeFBSEMA (10.03 g; 0.023 mol), BMA (3.34 g; 0.023 mol), LMA ( 5.85 g; 0.023 mol), MAA (1.67 g; 0.020 mol) and AD-1 (0.011 g). After the material had dissolved, LUPEROX (9.24 grams) and HFE-7100 (440.80 grams) were added. The reactor was then sealed, vacuumed to 5-10 psig (34-68 kPa), degassed four times, and then purged with nitrogen. The reactor temperature was raised and maintained at 80°C for approximately 24 hours. The solution obtained by filtration is used to coat the substrate to be tested.

Embodiment 2

[0190] Example 2 was prepared as described in Example 1, except that AD-2 was used instead of AD-1, and the AD-2 / polymer mass was gently heated to 80°C in an oven.

Embodiment 3

[0192] Example 3 was prepared as described in Example 1, except that AD-3 was used instead of AD-1.

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Abstract

Fluorescent functional dyes represented by the following formulas: wherein R1 is hydrogen or methyl; R2, R3, R4, R5, and R6 are each independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, aralkyl, alkaryl, halo, and trifluoromethyl; and L is a straight chain or branched chain alkylene containing 3 to about 15 carbon atoms, the alkylene group optionally containing one or more catenary heteroatoms.

Description

field of invention [0001] The present invention relates to fluorescent dyes and, in other aspects, to polymeric coatings and films containing such dyes. Background of the invention [0002] Conformal coatings are protective coatings that conform to the surface of electronic components and circuit board assemblies. Properly applied conformal coatings protect components and the board itself, extending the life of components. Proper coverage and uniformity of conformal coating on components is key to effective protection of components. But when coating components, it can be difficult to determine the integrity and uniformity of the conformal coating. For this reason, conformal coatings are sometimes doped with fluorescent dyes or “tracers” to aid quality assurance in checking for proper coverage of components. [0003] Fluorescent dyes such as thioxanthene compounds work well to impart color to certain plastics such as polymethacrylate, polycarbonate, polystyrene and polyest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D335/04C07D495/06C08F20/38C09B5/02C09B11/28C09B23/02C09B57/08C09B57/14C09D7/12C09D201/00H05K1/02H05K3/28
CPCH05K2203/161H05K1/0269C09B57/14H05K3/285C09B23/02C09B57/00C09K11/02C07D498/02
Inventor D·B·奥尔森
Owner 3M INNOVATIVE PROPERTIES CO
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