Core-shell type paint dyeing and printing adhesive agent emulsion and preparation method thereof

A core-shell type and adhesive technology, applied in dyeing, textiles and papermaking, etc., can solve problems such as environmental pollution, increase in raw material costs, web blocking, sticking rollers, etc., to improve printing fastness and reduce web blocking Effect

Inactive Publication Date: 2009-02-18
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Years of scientific research and industrial production practice have shown that the dye printing and dyeing process has at least the following three shortcomings: (1) the discharge and loss of a large number of unused dyes increases the use of dyes and increases the cost of raw materials; (2) the low utilization rate of dyes leads to Increased water and energy consumption in the cleaning process; (3) Organic dyes still remain in the treated wastewater, and long-term discharge accumulation will inevitably cause environmental pollution
[0005] (1) Formaldehyde release problem
[0006] (2) The contradiction between the feel and color fastness of paint printing and dyeing products
[0007] (3) Problems of screen blocking and roller sticking in the process of paint printing and dyeing
Due to the uneven type and content of the soft monomer in the polymer component contained in the adhesive, the different glass transition temperatures of the polymers with various copolymerization sequence structures, and the stability and minimum film-forming temperature of each latex particle are similar. Due to different factors, the adhesive emulsion is partially demulsified and formed into a film during the processing (the process requirement is to achieve the bonding function by demulsifying in the subsequent baking stage), resulting in the phenomenon of network blocking and sticking of rolls

Method used

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  • Core-shell type paint dyeing and printing adhesive agent emulsion and preparation method thereof
  • Core-shell type paint dyeing and printing adhesive agent emulsion and preparation method thereof
  • Core-shell type paint dyeing and printing adhesive agent emulsion and preparation method thereof

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preparation example Construction

[0032] 2. About the preparation method of the adhesive.

[0033] The preparation method of the core-shell type emulsion paint printing and dyeing adhesive modified by hydroxy-terminated acrylate is as follows:

[0034] Add 1 / 8 to 1 / 3 of the soft monomer, hard monomer, initiator, all surfactants and deionized water in the above-mentioned components into the reactor, and stir and pre-emulsify at 20°C to 50°C for 15min to 30min , raise the temperature to 75°C-90°C; keep warm for 1-3 hours after initiating polymerization, then cool and lower the temperature naturally; after cooling for 2-8 hours, raise the temperature to 50°C-70°C, add the remaining soft monomer and hard monomer dropwise , initiators, functional monomers and deionized water, keep warm at 75°C-90°C for 1.5-4 hours after the dropwise addition, and then cool to room temperature; Compound emulsion.

[0035] Various performances of the product of the present invention prepared by the above method can be detected by t...

Embodiment 1

[0045] Adhesive emulsion polymerization formula (percentage of each component of the reaction system in the total mass of the monomer):

[0046] Hydroxyethyl Acrylate 20

[0047] Ethyl acrylate and 2-ethylhexyl acrylate 60

[0048] Acrylic and Methacrylic 10

[0049] Methyl methacrylate 5

[0050] Styrene 5

[0051] Ammonium persulfate 0.5

[0052] Sodium lauryl sulfate and octylphenol polyglycol ether 5

[0053] Appropriate amount of deionized water

[0054] Synthesis:

[0055] Add 1 / 8 to 1 / 3 of the soft monomer, hard monomer, initiator, all emulsifiers and deionized water in the above reactant formula to the reactor, and stir and pre-emulsify at 20°C to 50°C for 15min to 30min , heat up to 75°C to 90°C; keep warm for 1 to 3 hours after initiating polymerization, then cool naturally and lower the temperature. Cool for 2 to 8 hours, heat up to 50°C to 70°C, add the remaining soft monomer, hard monomer, initiator and crosslinking monomer dropwise, and add the remaining ...

Embodiment 2

[0057] Adhesive emulsion polymerization formula (percentage of each component of the reaction system in the total mass of the monomer):

[0058] Hydroxybutyl acrylate 1

[0059] Butyl acrylate 80

[0060] Methacrylic acid 10

[0061] Methyl methacrylate and ethyl methacrylate 5

[0062] Acrylonitrile 2

[0063] Acrylamide 2

[0064] Potassium persulfate 0.5

[0065] Sodium dodecylbenzenesulfonate and octylphenol polyglycol ether 2

[0066] Appropriate amount of deionized water

[0067] Synthesis:

[0068] Add 1 / 8 to 1 / 3 of the soft monomer, hard monomer, initiator, all emulsifiers and deionized water in the above reactant formula into the reactor, and stir and pre-emulsify at 20°C to 50°C for 15min to 30min , heat up to 75°C to 90°C; keep warm for 1 to 3 hours after initiating polymerization, then cool naturally and lower the temperature. Cool for 2 to 8 hours, heat up to 50°C to 70°C, add the remaining soft monomer, hard monomer, initiator and crosslinking monomer dr...

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Abstract

The invention discloses a method for preparing core-shell emulsion type adhesive which is modified by hydroxyl-terminated acrylic ester and is used in fabric printing and dyeing processes. The adhesive is prepared through the following steps: soft monomers copolymerize with crosslinking monomers and portions of hard monomers to produce core-shell particles; then a small portion of soft monomers and a large portion of crosslinking monomers copolymerize with hard monomers to coat the surface of the core layer, thus obtaining a shell layer and forming stable core-shell type emulsion. One or the mixture of two or more from 2-hydroxyethyl acrylate, hydroxypropyl acrylate, hydrobutyl acrylate and hydrohexyl acrylate is taken as a portion of soft monomers and crosslinking monomers; one or the mixture of two or more from hydroxylmethyl methacrylic acid, 2-hydroxyethyl acrylate methacrylic acid and hydroxypropyl methacrylic acid is taken as a portion of hard monomers and crosslinking monomers; one from butyl acrylate, ethyl acrylate and 2 ethylhexyl acrylate is taken as main soft monomers; one or the mixture of two or more from methyl methacrylate, crylic acid, cinnamene, acrylonitrile and methacrylic acid is taken as the hard monomers; surfactant sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and octyl phenol polyethylene glycol are taken as emulsifying agent; potassium persulfate or ammonium persulfate is taken as initiator; and the copolymer emulsion is produced through emulsion copolymerization. Observed by transmission electron microscopy, the particles of the emulsion have visible core-shell structure and are even in distribution; the emulsion is stable, absolutely has no formaldehyde release both during the machining and using processes; the emulsion can be used both for pigment printing and for pigment dyeing.

Description

technical field [0001] The invention relates to a preparation method of an adhesive for textile paint printing and dyeing in the textile printing and dyeing industry, more particularly to a preparation method of a formaldehyde-free core-shell emulsion adhesive used in paint printing and dyeing. Background technique [0002] Dyeing and printing of textiles is an important processing technology for endowing textiles with functions such as color, pattern and fiber protection. Therefore, printing and dyeing technology has always been the focus of research and development in the field of textile science and textile industry. Traditional dyeing and printing mostly use various types of dyes to color fibers or fabrics. Years of scientific research and industrial production practice have shown that the dye printing and dyeing process has at least the following three shortcomings: (1) the discharge and loss of a large number of unused dyes increases the use of dyes and increases the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/52C08F220/18C08F220/28
Inventor 蒋学田秀枝俞恒杰谭文丽王树根
Owner JIANGNAN UNIV
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