Aqueous resin from the application in paper-Iota

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Aqueous resin from the application in paper

Aqueous resin from the application in paper, is the mainstream form recentlysynthetic leather production, technical threshold is the process of waterborne resin promotion must break through. Aqueous resin in the application of paper from the success, is the key of waterborne resin can replace solvent resin place.

The difference between aqueous resin and solvent type resin: firstly, waterborneresin hydrophilic end end, dear oil, solvent type resin is hydrophobic dearoleoresin, different film forming mechanism of a person, to release paperrequirements are also different; secondly, because of the surface tension of water large, difficult to spread on flat paper, and solvent based resin is almost notexist similar problems; secondly, the evaporation of water can be high, typically 1.5 times solvent type resin.

Therefore, in the process of drying, water-based resin should be appropriate toimprove the drying temperature, which has higher requirements on the release paper. Recently, the merits and Nike waterborne resin has initially achieved in therelease paper on the balance, to achieve a better spreading effect and gooddrying performance ten.

Recently, go up to 60%, solid content in the advanced German Bayer productseasy to drying, with better properties, can be made of high-grade synthetic leather. But the drawback is that the cost is too high, not suitable for Chinasynthetic leather industry market. Aqueous resin products in China Wenzhou Huanyu macromolecule material Co. Ltd, Huafeng resin and Anhui Anqing chemical materials are capable of producing different performance, but due tophysical properties of waterborne polyurethane itself and limitation of application performance on a release paper, has also not been applied to bulk products,especially in the semi PU leather is also not seen successfully applied.