Method for making environment-friendly and easily-erased liquid ink for teaching and writing and color paste used therein
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A production method and an environmentally friendly technology, which can be used in inks, applications, household appliances, etc., can solve problems such as polluting the environment, poor erasability, and affecting the physical and mental health of teachers and students
Inactive Publication Date: 2011-08-10
谢立华
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Abstract
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Problems solved by technology
[0003] (1) The chalk writing used in the teaching process produces a lot of dust, which seriously affects the physical and mental health of teachers and students
[0004] (2) The ordinary whiteboard pens currently used in some schools can write on white boards or color boards such as enamel, baking paint, and pasting plastic, and have poor erasability (including poor timely erasability and d...
Method used
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Embodiment 1
[0027] The color paste is made from the following raw materials in parts by weight:
[0028] 2 parts of PVB resin 27, 1 part of acrylic resin 920, 1 part of acrylic resin 601, 4 parts of phthalo blue, 2 parts of erasable agent 212P, 3 parts of erasable agent 207KC, 5 parts of erasable agent T-POP50 , 0.5 parts of moisturizing agent, 2 parts of dispersant 4027, 1 part of dispersant 4040, 76.5 parts of ethanol.
Embodiment 2
[0030] The color paste is made from the following raw materials in parts by weight:
[0031] 3 parts of PVB resin 27, 1 part of acrylic resin 920, 1 part of acrylic resin 601, 1 part of phthalocyanine green 5319, 4 parts of phthalocyanine green 5340, 3 parts of erasable agent 212P, 4 parts of erasable agent 207KC, erasable 2 parts of agent T-POP50, 0.6 parts of humectant, 1 part of dispersant 4027, 1 part of dispersant, 78.4 parts of ethanol.
Embodiment 3
[0033] The color paste is made from the following raw materials in parts by weight:
[0034] 4 parts of PVB resin 27, 1 part of acrylic resin 920, 12 parts of acrylic resin 60, 2.0 parts of carbon black, 4 parts of erasable agent 212P, 5 parts of erasable agent 207KC, 7 parts of erasable agent T-POP50, 1 part of moisturizing agent, 1 part of dispersant 4027, 0.5 part of dispersant 4040, 72.5 parts of ethanol.
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Abstract
The invention discloses a method for making environment-friendly and easily-erased liquid ink for teaching and writing. The method is invented in order to completely solve the problem of serious writing dust pollution of the traditional teaching blackboards in general domestic schools. The liquid ink comprises a resin, a pigment, an assistant, a solvent and the like. By adopting a writing pen (a water storage refill type and a direct liquid type) filled with the writing liquid during writing on white boards or colorful boards (applicable to both high gloss and low gloss) like enamels, baking finish, plastic laminated articles and the like, liquid ink disclosed by the invention has the advantages of smoothness of writing, easiness of erasing, no dyeing on board, no dust pollution and the like. The students can be kept with good visual psychological states due to soft tactility and various colors, and thus the liquid ink can be used for a long time without damaging visions of the students.
Description
technical field [0001] The invention relates to a production method of an environment-friendly easy-to-erasable liquid teaching writing ink and a used color paste. Background technique [0002] At present, the common problems and disadvantages of the teaching equipment used in the majority of schools in our country can be roughly divided into the following categories: [0003] (1) The chalk writing that adopts in the teaching process produces a large amount of dust, has a strong impact on the physical and mental health of teachers and students. [0004] (2) The ordinary whiteboard pens currently used in some schools can write on white boards or color boards such as enamel, baking varnish, and plastic, and have poor erasability (including poor erasability in time and poor erasability in delay). Teachers need to spend a lot of time and energy cleaning the blackboard, which affects teaching efficiency. [0005] (3) Ordinary whiteboard markers can only be used on high-gloss bo...
Claims
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Application Information
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