Application of alcohol soluble polyamide resin in ink

Polyamide resin refers to a polymer having -NCO structure in the molecular chain. Using dimer fatty acid as a monomer, various properties of the polyamide resin product for ink can be produced through several modification methods. Polyamide resins of this type can be broadly divided into two major categories: one is benzene-soluble polyamide resin, which is mainly used in surface gravure ink; the other is alcohol-soluble polyamide resin. However, polyamide resins provided by most manufacturers are not good in alcohol solubility and need to be added with a certain amount of aromatic solvents in order to increase their alcohol solubility, and freezing phenomenon occurs at a certain temperature.
The above characteristics limit the application range of polyamide resins,pvc resin, but in the modern society where the concept of environmental protection is increasing, the alcohol-soluble polyamide resins with excellent properties will be further expanded in application,titanium Dioxide, thus accelerating the development of more excellent alcohols. Polyamide resin is very practical.
In the second half of 1999, there were two mature pure alcohol-soluble polyamide resins on the domestic market, which were good in terms of leveling, refreezing performance, or adhesion strength, and had no freeze-up phenomenon; and they were well mixed with nitrocellulose. Solubility.
The alcohol-soluble polyamide resin is mainly used as a rubber letterpress ink in applications, and has a good adhesion to various printing materials, especially a printed polyolefin film. The leveling property, gloss, and solvent release property of the ink are all It is better to use together with nitrocellulose, cellulose vinegar, etc. with good heat resistance, which can improve its heat resistance, finger resistance, and friction resistance; at the same time, it can improve the adhesion between the ink and the substrate. Also add some wax, antistatic agents and other auxiliary agents, it can further improve its printability. Secondly, when the alcohol-soluble polyamide resin is used to modify the acetic acid resin, a highly thixotropy and a very small flowable colloidal substance can be obtained, which can be used as a binder for high-speed printing ink, and can also be mixed with linseed oil to form a colloidal oil. Used for offset printing inks. In addition, alcohol-soluble polyamide resins with high gloss and adhesion strength can also be used to make varnish. There are also ink manufacturers blending alcohol-soluble polyamide resins with benzene-soluble polyamide resins as surface gravure inks for better printing results. In addition, it has been reported that some foreign companies have successively introduced to the market alcohol-soluble polyamide resins with good reproducibility and achieved market acceptance. It can be seen that, with the continuous advancement of science and technology, alcohol-soluble polyamide resins will surely be obtained. A broader market outlook.