Environment-friendly microcapsule of carbonless copy paper and preparing method thereof, coating of carbonless copy paper

A technology of carbon-free copy paper and microcapsules, which is applied in the field of papermaking, can solve problems such as physical impact and strong pollution, and achieve the effects of reducing pollution, improving color rendering density, and clear writing

Inactive Publication Date: 2017-01-11
GOLD HUASHENG PAPER SUZHOU IND PARK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current technology, solvent oil in microcapsules for carbonless copy paper accounts for 70% or more of the microcapsules. At the same time, high-grade carbonless paper microcapsule solvent oil generally uses Naphthalene, etc. The low-end market uses heavy aromatics. These materials are benzene-based materials with high boiling points, which can dissolve colorless dyes well, but their disadvantage is that they are highly polluting, and long-term contact will affect the human body.

Method used

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  • Environment-friendly microcapsule of carbonless copy paper and preparing method thereof, coating of carbonless copy paper
  • Environment-friendly microcapsule of carbonless copy paper and preparing method thereof, coating of carbonless copy paper
  • Environment-friendly microcapsule of carbonless copy paper and preparing method thereof, coating of carbonless copy paper

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Experimental program
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preparation example Construction

[0031] The preparation method of described carbon-free copy paper environment-friendly microcapsules is:

[0032] 1. Dissolve 2 to 10 parts of colorless dye in 20 to 80 parts of environmentally friendly solvent oil under heating to obtain a core material;

[0033] 2. Add the core material prepared in step 1 and 2-10 parts of emulsifier into 10-100 parts of water, stir well and carry out preliminary emulsification, and add 6-15 parts of wall after reaching the expected particle size (2um-6um) material, stir well;

[0034] 3. Gradually raise the temperature of the emulsion obtained in step 2 to 65°C to 75°C while stirring, and then solidify and form it to make environmentally friendly microcapsules;

[0035] 4. Finally, adjust the pH of the environment-friendly microcapsules to 7.5-10 with a pH regulator and store them for later use.

[0036] At the same time, the present invention also provides a carbonless copy paper coating containing the above-mentioned environment-friendl...

Embodiment 1

[0041] The specific composition of the environmental-friendly microcapsules for carbonless copy paper of Example 1 is shown in Table 1:

[0042] Table 1 Composition of environmental protection microcapsules

[0043]

[0044] The preparation of the environmental protection microcapsules for carbonless copy paper of embodiment 1 has the following steps:

[0045] 1. Dissolve 5 parts of colorless dye crystal violet lactone in 70 parts by weight of environmentally friendly solvent oil (including 60 parts of modified soybean oil, 5 parts of modified coconut oil, and 5 parts of modified peanut oil) under heating conditions , to get the core material;

[0046] 2. Add the obtained core material and 4.5 parts of styrene maleic anhydride emulsifier into 100 parts of water, stir well and then emulsify. After reaching the target particle size (2um~6um), add 15 parts by weight of wall material and stir thoroughly;

[0047] 3. Gradually raise the temperature of the above-mentioned emuls...

Embodiment 2

[0052] The environmental protection microcapsule formula of embodiment 2 is specifically referred to Table 2:

[0053] Table 2 composition of environment-friendly microcapsules

[0054]

[0055]

[0056]The preparation method of the environment-friendly microcapsule of embodiment 2 comprises the steps:

[0057] 1. Dissolve 5 parts of colorless dye in 70 parts of environmentally friendly solvent oil (including 60 parts of modified soybean oil, 5 parts of modified castor oil, and 5 parts of modified peanut oil) under heating conditions to obtain a core material;

[0058] 2. Add the above core material and 4.5 parts of emulsifier into 90 parts of water, stir well and then emulsify. After reaching the target particle size (2um ~ 6um), add 15 parts of wall material and stir fully;

[0059] 3. Gradually raise the temperature of the above-mentioned emulsion to 65°C to 75°C while stirring for curing and molding to make environmentally friendly microcapsules;

[0060] 4. Finall...

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Abstract

The invention discloses environment-friendly microcapsule of carbonless copy paper. The environment-friendly microcapsule for carbonless copy paper is prepared from, by weight, 2-10 parts of leuco dye, 20-80 parts of environment-friendly solvent oil, 2-10 parts of emulsifier, 6-15 parts of wall material and 10-100 parts of water. The microcapsule conducts reasonable optimization and compound of plant-based and animal-based environment-friendly solvent oil, to replace general benzene series solvent oil. The invention is applied to microcapsule for carbonless copy paper. The carbonless copy paper prepared from the microcapsule is more environment-friendly, innocuous and nonpoisonous, which reduces pollution, and makes writing of copy more clear. The invention also discloses a preparing method for microcapsule of carbonless copy paper and coating of microcapsule of carbonless copy paper.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to an environment-friendly microcapsule for carbonless copying paper and its preparation, and a carbonless copying coating using the same. Background technique [0002] Carbonless copy paper has mature technology, is easy to use, has many copies, clear handwriting, and is easy to save. It is widely used in business forms, such as invoices and forms for banking, taxation, telecommunications, insurance, catering, etc. [0003] Carbonless copy paper (NCR) is generally composed of three paper sheets, namely upper paper (CB paper), middle paper (CFB paper) and lower paper (CF paper). The back of the upper paper is coated with microcapsules; the front of the middle paper is coated with a developer and the back is coated with microcapsules; the front of the lower paper is coated with a developer. The microcapsules on the upper paper and the middle paper contain leuco dye and solvent o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/54D21H19/14B01J13/02
CPCD21H21/54B01J13/02D21H19/14
Inventor 倪金鹏陈汉彬李娟
Owner GOLD HUASHENG PAPER SUZHOU IND PARK
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