Single-component water-emulsion type rotary screen stenciling sensitive material

Abstract

The invention discloses a single-component water-emulsion type rotary screen stenciling sensitive material which comprises the following raw materials by weight percent: 20-45 percent of modified SBQ resin water solution, 10-30 percent of crylic acid modified epoxy resin, 0.5-4 percent of hyperbranched polyester resin, 2-5 percent of polyvinyl unsaturated compound, 2-4 percent of blocked isocyanate compound, 1-2 percent of photopolymerization initiator, 0.001-0.5 percent of antioxidant and stabilizing agent as well as 15-60 percent of water. The invention has the advantages that in the using process, no toxic and harmful gases and no heavy metal ion waste liquid are discharged; matters, such as bichromate, and the like are not adopted as photosensitizer, any matters are unnecessary to be added before use, and the water development firmness of the material can satisfy the requirements of fine patterns; residues after being used can be also recycled, and the material has good waterproofness, high chemical abrasion resistance and wide using prospect; the hyperbranched polyester resin is adopted as heat curing agent of epoxy resin, and the invention is successfully applied to light-sensitive stenciling material.

Description

【Technical field】 [0001] The invention relates to a plate-making photosensitive material, specifically, a single-component water-emulsion type rotary screen plate-making photosensitive material. 【Background technique】 [0002] As we all know, the main components of water-emulsion rotary screen photosensitive materials on the market are dichromate / PVA photosensitive system and epoxy resin adhesive system. Due to the advantages of relatively cheap price, relatively short exposure time, wide exposure light source, photosensitive film layer can be photosensitized in proportion, etc., it has dominated the domestic and foreign rotary screen printing market for a long time. [0003] Shanghai Zhongda Science and Technology Development Co., Ltd. (applicant) discloses a kind of environment-friendly water-emulsion type rotary screen photosensitive glue, and its Chinese patent publication number is CN1667507, which is made of modified SBQ resin aqueous solution, diluted with hydrophilic...

AI Technical Summary

Problems solved by technology

[0003] Shanghai Zhongda Science and Technology Development Co., Ltd. (applicant) discloses a kind of environment-friendly water-emulsion type rotary screen photosensitive glue, and its Chinese patent publication number is CN1667507, which is made of modified SBQ resin aqueous solution, diluted with hydrophilic unsaturated monomer epoxy resin, epoxy resin curing agent, photopolymerization initiator, etc.; they also disclose a water-emulsion type rotary screen photosensitive adhesive. It is composed of the mutual content of resin and epoxy resin, epoxy resin curing agent, photopolymerization initiator, lower alkyl fatty alcohol, etc.; there is also an invention of a high-efficiency water-emulsion type rotary screen photosensitive adhesive, Chinese Patent Publication No. CN1664700, it consists of modified SBQ resin aqueous solution, the mutual content of photocurable resin and epoxy resin, epoxy resin curing agent, hydrophilic unsaturated monomer, photopolymerization initiator, lower alkyl fatty alcohol, etc. Composition; in these inventions, the method of increasing the cross-linking density of the system by adding a variety of auxiliary agents has been significantly improved, but it is still necessary to add diazo resin before plate making to further improve the water development fastness

So far, there is no one-component rotary screen photosensitive plate-making material on the market