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Water- and solvent-resistant diazo screen printing platemaking photoresist

A technology for screen printing and photosensitive adhesive, which is applied in the field of water-resistant and solvent-resistant diazo-based screen printing plate-making photosensitive adhesives. Effect

Inactive Publication Date: 2003-10-29
SHANGHAI JAROS NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of traditional plate-making photosensitive material cannot have the performance of water resistance and solvent resistance at the same time, because the printing workers use banana water, cyclohexanone, etc. to scrub the dye and color paste on the screen.
Moreover, the chemical resistance is poor, especially not suitable for acid dyes and reactive dye printing processes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0049] Weigh raw materials according to the following proportions:

[0050] PVA14-88 (polyvinyl alcohol, average degree of polymerization 1400, alcohol whiteness 88%) 10 kg,

[0051] PVAC-A (40% polyvinyl acetate-acrylate copolymer, 40% solid content) 80 kg,

[0052] Silicone modified epoxy resin (20% solid content) 5 kg,

[0053] Photocrosslinking active monomer 1,6-hexanediol diacrylate 2 kg,

[0054] Silicone defoamer / leveling agent 0.2 kg,

[0055] 0.5 kg of sensitizing dye,

[0056] Photosensitizer (diazo resin) 0.5 kg,

[0057] Water 1.8 kg.

[0058] Stir the above products evenly in a mixing tank to obtain the desired product.

example 2

[0060] Weigh raw materials according to the following proportions:

[0061] Modified PVA (modified with formaldehyde, solid content 10%) 40 kg,

[0062] PVAC-A (40% polyvinyl acetate-acrylate copolymer, 40% solid content) 40 kg,

[0063] 10 kg of silicone modified polyurethane resin (20% solid content),

[0064] Photocrosslinking active monomer 1,6-hexanediol diacrylate 5 kg,

[0065] Silicone defoamer / leveling agent 0.2 kg,

[0066] 0.5 kg of sensitizing dye,

[0067] Photosensitizer (diazo resin) 0.5 kg,

[0068] Water 3.8 kg.

[0069] Stir the above products evenly in a mixing tank to obtain the desired product.

example 3

[0071] Weigh raw materials according to the following proportions:

[0072] PVA14-88 (polyvinyl alcohol, average degree of polymerization 1400, alcohol whiteness 88%) 20 kg,

[0073] PVAC-A (40% polyvinyl acetate-acrylate copolymer, 40% solid content) 60 kg,

[0074] 15 kg of silicone modified epoxy resin (20% solid content),

[0075] Photocrosslinking active monomer 1,6-hexanediol diacrylate 3 kg,

[0076] Silicone defoamer / leveling agent 0.2 kg,

[0077] 0.5 kg of sensitizing dye,

[0078] Photosensitizer (diazo resin) 0.5 kg,

[0079] Water 0.8 kg.

[0080] Stir the above products evenly in a mixing tank to obtain the desired product.

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PUM

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Abstract

A water and solvent resistant diazo-photoresist for making the silk screen printing plate is prepared from polyvinyl alcohol homopolymer / polyvinyl alcohol-aldehyde modified polymer, poly(vinyl acetate) homopolymer / vinyl acetate-acrylate copolymer, organosilicon modified high-molecular compound, and the monomer with optical cross-linking activity through mixing. Said silk screen printing plate is made up through applying said photoresist on silk screen, baking to become film, ultraviolet irradiation, optical solidifying reaction, developing in water, and removing the part which is not photosensed. It can resist against water, solvent, acidic dye and reactive dye.

Description

Technical field: [0001] The invention relates to a photosensitive adhesive for screen printing plate making, and further relates to a water-resistant and solvent-resistant diazo-based photosensitive adhesive for screen printing plate making. Background technique: [0002] As we all know, photosensitive adhesive is an indispensable material for direct screen printing plate making, and it is one of the three elements that constitute modern screen printing technology. In the past, the photosensitive materials used in screen printing to make screen plates used natural polymers such as gelatin, protein synthetic polymers such as polyvinyl acetate homopolymers as adhesives, and dichromates or diazo compounds as photosensitizers. . This kind of traditional plate-making photosensitive material cannot have water resistance and solvent resistance at the same time, because printing workers use banana water, cyclohexanone, etc. to scrub the dye and color paste on the screen. Moreover,...

Claims

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Application Information

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IPC IPC(8): G03F7/00G03F7/038
Inventor 潘跃进杨成龙
Owner SHANGHAI JAROS NEW MATERIAL
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