Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Development suppressing group-releasing magenta color coupler

A technology of coupler and base product, applied in the field of silver halide color photosensitive negative materials, can solve the problems of slow release speed of development inhibitor and high synthesis cost, improve image granularity and color reproducibility, low synthesis cost, and improve Effects of color reproducibility and sharpness effects

Inactive Publication Date: 2003-08-13
沈阳感光化工研究院有限公司
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also defects in these DIR couplers with timing bases-the synthesis cost is relatively high
At the same time, the development inhibitor release rate is slow
Therefore, problems remain in adequately improving color reproduction and sharpness effects

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Development suppressing group-releasing magenta color coupler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (Exemplary compound MCP-ZB): 1-(2,4,6-trichlorophenyl)-3-[3-[(2,4-di-tertpentylphenoxy)acetamido]benzamide ]-4-[[5-[(4-methylphenoxy)methyl]-1,3,4-diazol-2-yl]mercapto]-5-pyrazolone.

[0016] 1. Intermediate

[0017] 1-(2,4,6-Trichlorophenyl)-3-[3-(2,4-Di-tertpentylphenoxy)acetamido]benzamido-4-bromo-5-pyrazolone Preparation.

[0018] Reaction formula: (Abbreviated as MCP parent compound) (Abbreviated as MCP parent bromide)

[0019] Operation method:

[0020] In a 250 ml three-necked flask equipped with a stirrer and a thermometer, add 20 g of MCP parent compound and 60 ml of DMF (dimethylformamide), cool the temperature of the reaction flask to 0~5°C, and add 1.44 ml of bromine dropwise for half an hour After the internal dripping is completed, naturally warm to room temperature, continue the reaction for 2 hours, then pour the reaction liquid into a solution consisting of 200 ml of water and 100 g of ice, stir, a large amount of white solid appears, filter, wash, filter...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A coloring agent releasing development depressing group is disclosed. Its advantages are high image quality, low cost, high release speed, and high color reproducibility and definition.

Description

Technical field [0001] The invention relates to a silver halide color photosensitive negative material, in particular to a coupler for releasing development inhibiting base products. Background technique [0002] When the oxides of the coupler and the developer react, the released inhibitor can improve the image quality of the photosensitive material. For example, DIR compounds mentioned in US, 3,227,554, 3,933,500, 3,701,783, 3,617,291, 3,379,529, 3,620,746; JPK57-155537 all have the effect of improving image quality, but in terms of color reproducibility, the performance of these compounds is still insufficient. [0003] Hydrolyzed DIR compounds are proposed in patents such as JPK57-151944, JPK1-280755, US4782012, CN106,455, etc. These compounds can improve image sharpness and color reproducibility, but these DIR couplers make the coupling of the couplers after development. Activity decreases. [0004] In order to strengthen the image edge effect and interlayer effect, some DIR...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G03C7/26G03C7/305
Inventor 修煜李善柱欧阳贵平陈学慧范天奕罗鸿椾许丽
Owner 沈阳感光化工研究院有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com