Aqueous washable ink

Abstract

The invention relates to environment-friendly aqueous washable ink which is used for writing implements for children and extremely easy to wash off surfaces of various fabrics and skin. The HLB (hydrophile-lipophile balance) of colorants in the aqueous washable ink is at least 20, the mass content of each colorant in a system is 0.1-8%, the mass content of poly-epoxy alcohol builder in the system is 8-20%, the weight ratio of poly-epoxy alcohol derivate to poly-epoxy alcohol builder is about 0.2-0.45, the weight ratio of water soluble resin to each colorant is about 0.75-1.25, the mass content of sterilizing antiseptic is 0.1-0.5%, and water, other water soluble solvents or combination of water and water soluble solvents are used for complementing the balance. Binding capacity of the colorants to surfaces of fabrics or skin can be effectively weakened by adding the poly-epoxy alcohol polymers and corresponding derivates in the system to be combined with the water soluble resin, and inkiness can be directly washed off with clean water, so that failure in washing of scrawls at different places by children is out of concern. In addition, the composition of the ink is nontoxic and harmless, so that the ink is environment-friendly.

Description

technical field [0001] The present invention is a kind of dye-type water-based super washable ink, which is mainly used in the coloring system of children's writing tools. etc.), have good washability. At the same time, the ingredients in the ink do not contain toxic and harmful substances, which is green and environmentally friendly. Background technique [0002] Water-based washable ink is mainly a color system developed for children's calligraphy and painting pens, which can be used to write on the surface of objects. When ink blots form on certain surfaces (such as fabrics) dry, they can be easily rinsed off with water. Children can use this kind of ink to draw various colorful patterns on the paper, because the ink has better adhesion to the paper fibers; but don't be afraid of ink scribbling on clothes or skin, because the ink marks left on these surfaces can be Washes off easily. [0003] There are many types of erasable inks on the market, mainly dry-erase inks, ...

AI Technical Summary

Problems solved by technology

However, this kind of dry erasing ink is generally scrubbed on a specific non-porous surface, while the surface of the fabric or skin is porous and easy to absorb various colorants, making the composition of the dry erasing ink not suitable for water-based washable inks , In addition, dry erase inks often contain some organic solvents to adjust the drying speed of the ink, which makes this ink generally not suitable for children

An existing class of water-based washable inks can be easily cleaned on certain fabric surfaces, while leaving obvious marks on other surfaces or skin surfaces, which are difficult to clean even with detergent

And if the ink stays for a while, it may be more difficult to clean

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