Chromium-free photo-sensitive resist for rotary screen printing

A technology of rotary screen printing and photosensitive adhesive, which is applied in the field of rotary screen photosensitive adhesive, which can solve the problems of slow reaction rate, inability to develop, water pollution, etc., and achieve strong washing fastness, improved bonding fastness, and low human injury.

Inactive Publication Date: 2015-08-19
陈国荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using ammonium dichromate as a photosensitive agent also has obvious disadvantages: when ammonium dichromate is mixed with the colloid, it must be used immediately, otherwise due to dark reaction, the film will be cross-linked and cannot be developed; ammonium dichromate contains chromium , and chromium is a typical carcinogenic heavy metal, which is extremely toxic to the human body and is also one of the sources of heavy metal pollution in groundwater. During the development process, it is dissolved by water and removed from the nickel mesh. At

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A photosensitive glue for rotary screen printing, consisting of the following components by weight:

[0029] Polyvinyl alcohol (30%) 60 parts

[0030] 15 parts gelatin

[0031] 18 parts of p-diazo diphenylamine paraformaldehyde condensate

[0032] Polyisocyanate block 4 parts

[0033] Silicone modified polyurethane resin 10 parts

[0034] 15 parts of trimethylolethane

[0035] Styryl pyridine sulphate dimethyl salt 3 parts

[0036] Hydroquinone 2 parts

[0037] Curing agent 10 parts

[0038] Polyethyleneimine 1 part

[0039] 7 parts of ethylamine boron trifluoride salt

[0040] Benzyl dimethylamine 3 parts

[0041] 8 parts of aluminum chloride hexahydrate

[0042] 50 parts of solvent

[0043] Reactive brilliant blue 0.2 part

[0044] Silicone defoamer 2 parts

[0045] Vitamin E 0.05 parts.

Embodiment 2

[0047] A photosensitive glue for rotary screen printing, consisting of the following components by weight:

[0048] Polyvinyl alcohol (30%) 80 parts

[0049] 20 parts of gelatin

[0050] 30 parts of p-diazo diphenylamine paraformaldehyde condensate

[0051] 10 parts of polyisocyanate block

[0052] 15 parts of silicone modified polyurethane resin

[0053] 10 parts of trimethylolethane

[0054] 6 parts of styryl pyridine sulfate dimethyl salt

[0055] Hydroquinone 8 parts

[0056] Curing agent 12 parts

[0057] Polyethyleneimine 4 parts

[0058] 15 parts of ethylamine boron trifluoride salt

[0059] Benzyldimethylamine 6 parts

[0060] 10 parts of aluminum chloride hexahydrate

[0061] 100 parts of solvent

[0062] Reactive brilliant blue 0.3 parts

[0063] Silicone defoamer 5 parts

[0064] 1.0 part of Vitamin E.

Embodiment 3

[0066] A photosensitive glue for rotary screen printing, consisting of the following components by weight:

[0067] Polyvinyl alcohol (30%) 70 parts

[0068] 18 parts gelatin

[0069] 22 parts of paraformaldehyde condensate of p-diazo diphenylamine

[0070] 7 parts of polyisocyanate block

[0071] 13 parts of silicone modified polyurethane resin

[0072] 18 parts of trimethylolethane

[0073] Styrylpyridine dimethyl sulfate 4 parts

[0074] Hydroquinone 5 parts

[0075] Curing agent 11 parts

[0076] Polyethyleneimine 3 parts

[0077] 10 parts of ethylamine boron trifluoride salt

[0078] Benzyl dimethylamine 4 parts

[0079] 9 parts of aluminum chloride hexahydrate

[0080] 80 parts of solvent

[0081] Reactive Brilliant Blue 0.25 parts

[0082] Silicone defoamer 3 parts

[0083] 0.08 parts of vitamin E.

[0084] The curing agent in the foregoing Examples 1-3 is low-molecular-weight polyamide resin, acid anhydride, boron trifluoride and complexes thereof. The solvent is water.

[0085] The photosen...

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PUM

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Abstract

The invention relates to chromium-free photo-sensitive resist for rotary screen printing, which comprises the following components: polyvinyl alcohol (30%), gelatin, p-diazodiphenylamine paraformaldehyde condensate, polyisocyanate blocks, silicone modified polyurethane resins, trimethylolethane, 3-6 parts of stilbazole dimethyl sulfate salt, hydroquinone, curing agents, polyethyleneimine, ethylamine boron trifluoride salt, benzyl dimethylamine, aluminum chloride hexahydrate, solvents, aluminum chloride hexahydrate, silicone defoaming agents and vitamin E. The chromium-free photo-sensitive resist has the advantages of strong binding force of the high-precision photo-sensitive resist for a rotary printing screen and the rotary printing screen, excellent chemical resistance and abrasion resistance, and high press run; plate making and developing of the rotary printing screen are clear and mesh holes cannot be stopped; through adding the silicone modified polyurethane resin, the tensile property of the rotary printing screen in a printing process is improved, and the service life of the rotary printing screen is prolonged.

Description

Technical field [0001] The invention relates to a rotary screen photosensitive glue, in particular to a chromium-free rotary screen photosensitive glue. Background technique [0002] Rotary screen printing technology is an important large-scale printing technology. It is a printing process that can achieve high resolution, continuous, and extremely high printing resistance. It is mainly used for printing cloth, plastic film and other continuous textiles. Rotary screen photosensitive glue is an important photosensitive material for rotary screen printing. It is usually composed of colloid and photosensitive agent. The colloid is an aqueous emulsion and the photosensitive agent is an aqueous solution of ammonium dichromate. When using, add the sensitizer ammonium dichromate solution to the colloid, stir it evenly, apply immediately after defoaming, dry at a low temperature under 35-40℃, carry out exposure, wash and develop, after drying, then at 180℃ Baking, curing, and finally fo...

Claims

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Application Information

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IPC IPC(8): G03F7/004G03F7/021G03F7/075D06P1/44D06P1/58D06P1/46D06P1/651D06P1/642D06P1/673C09D11/106C09D11/102C09D11/103C09D11/04
Inventor 陈国荣
Owner 陈国荣
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