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Application of nano-grade water-based narrow molecular-weight distributed acrylic copolyester

A technology of acrylic copolyester and narrow molecular weight distribution, applied in the chemical industry, can solve the problems of increasing VOCs emissions, easy to fade, slow drying speed, etc., to achieve the elimination of dependence on VOC-containing substances, excellent boiling resistance, and protection of human health Effect

Active Publication Date: 2019-04-09
SHANGHAI XIANKE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) Large particle size, no surface gloss after film formation
[0006] (2) The phenomenon of water absorption and moisture resurgence occurs, causing back sticking, easy to fade, and the adhesion cannot reach the state of adhesion of solvent-based inks
When printing and packaging need to be sterilized by boiling water, the ink is dissolved to cause colored wastewater or direct color loss
[0007] (2) The drying speed is slow and cannot meet the requirements of printing speed. By increasing the heating amount of drying, the effect is still not obvious
Existing water-based inks often use organic diluents such as alcohols. Although they can speed up the drying speed, they increase the VOCs emissions during the printing process and cannot effectively reduce the total emissions of VOCs.

Method used

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  • Application of nano-grade water-based narrow molecular-weight distributed acrylic copolyester
  • Application of nano-grade water-based narrow molecular-weight distributed acrylic copolyester
  • Application of nano-grade water-based narrow molecular-weight distributed acrylic copolyester

Examples

Experimental program
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Effect test

Embodiment 1

[0081] Embodiment 1, the preparation of nanoscale water-based narrow molecular weight distribution acrylic copolyester C30

[0082] The preparation method of nanoscale water-based narrow molecular weight distribution acrylic acid copolyester of the present invention is as follows:

[0083] A) Dissolve the emulsifier sodium lauryl sulfate of formula quantity 50% quality in the ultrapure water of formula quantity 90% quality in reactor, stir until sodium lauryl sulfate dissolves completely, form emulsifier aqueous solution, then heat to 80°C and keep at a constant temperature.

[0084] B) add the water of remaining formula quantity in the container, then add the initiator ammonium persulfate of formula quantity, stir until ammonium persulfate dissolves completely, obtain initiator aqueous solution.

[0085] C) Add the basic monomer methyl methacrylate, methacrylic acid and butyl acrylate of the recipe amount into the container respectively, stir evenly, remove the polymerizat...

Embodiment 2

[0088] Embodiment 2, preparation of nanoscale water-based narrow molecular weight distribution acrylic copolyester C30

[0089] A) in the reactor, dissolve the emulsifier sodium octadecyl sulfate of formula amount 45% quality with the ultrapure water of formula amount 80% quality, stir until sodium octadecyl sulfate dissolves completely, form emulsifier aqueous solution, then heat to 70°C and maintain a constant temperature.

[0090] B) add the water of remaining formula quantity in the container, then add the initiator potassium persulfate of formula quantity, stir until potassium persulfate dissolves completely, obtain initiator aqueous solution;

[0091] C) Add the basic monomer methyl methacrylate, methacrylic acid and butyl acrylate of the recipe amount into the container respectively, stir evenly, remove the polymerization inhibitor, and add the emulsifier of the remaining recipe amount of 55% by mass, and stir slowly Until the emulsifier and basic monomer are complet...

Embodiment 3

[0093] Embodiment 3, preparation of nanoscale water-based narrow molecular weight distribution acrylic copolyester C30

[0094] A) Dissolve emulsifier NP-10 with a formula quantity of 55% mass in ultrapure water with a formula quantity of 70% mass in the reactor, stir until the NP-10 is completely dissolved to form an aqueous emulsifier solution, then heat to 85°C and keep constant temperature.

[0095] B) add the water of remaining formula quantity in the container, then add the initiator ammonium persulfate of formula quantity, stir until ammonium persulfate dissolves completely, obtain initiator aqueous solution;

[0096] C) Add the basic monomers methyl methacrylate, methacrylic acid and butyl acrylate of the recipe amount into the container respectively, stir evenly, remove the polymerization inhibitor, and add the emulsifier of the remaining recipe amount of 45% by mass, and stir slowly Until the emulsifier and basic monomer are completely dissolved to obtain a mixed ...

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Abstract

The invention discloses application of nano-grade water-based narrow molecular-weight distributed acrylic copolyester, which is used for preparing pure water-based oil ink. The pure water-based acrylic copolyester is synthesized from the following raw materials: basic monomer including methyl methacrylate, methacrylic acid and butyl acrylate, wherein the basic monomer is polymerized in a pure water system under the effect of an emulsifier and an initiator to form acrylic copolyester which has the D50 grain size of 40-65nm and the polydispersity index PDI (Mw / Mn) of less than 1.05. The invention further provides a pure water-based oil ink. According to the pure water-based oil ink, the system viscosity can be reduced without adding an organic solvent, so that independence on VOC-containingsubstances can be eliminated, and human body health is guaranteed. The acrylic copolyester has high drying speed, does not need to add organic drier to greatly reduce VOC emission, has strong adhesionand excellent water resistance without after-tack phenomenon, and has excellent color revealing, excellent strain force and excellent boiling resistance.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to the application of a nanoscale water-based acrylic acid copolyester with narrow molecular weight distribution. Background technique [0002] In order to reduce the use of VOC substances, the current international and domestic resin-related industries mainly use water-based resins such as polyurethane, epoxy resin, and water-soluble acrylic acid as raw materials, and use resin modification or salt formation, fine particle size emulsification and other preparation processes. However, the polymerization method of water-based resins such as polyurethane and epoxy resin is doomed to be water-based modification. And in the modified preparation process of water-based resin, although can reduce the use of VOC material, reduce the use of toxic and harmful substances, still can't accomplish to get rid of volatile organic compound completely. Therefore, the production...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/107C09D11/037C09D11/03C08F220/14C08F220/06C08F220/18C08F230/02
CPCC09D11/03C09D11/037C09D11/107C08F220/14C08F220/18C08F220/1804C08F220/06C08F230/02C08F220/1811
Inventor 张元张毅君
Owner SHANGHAI XIANKE CHEM CO LTD
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