Transferring and compounding dual-purpose coating for waterborne polyurethane, preparation method and application thereof

A water-based polyurethane and coating technology, applied in polyurea/polyurethane coatings, coatings, devices for coating liquid on the surface, etc., can solve the problems of additive precipitation and other problems, and achieve stable quality, good applicability, and easy production Effect

Inactive Publication Date: 2012-02-29
SHANGHAI CHENGYING NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some existing patents are aimed at solutions for water-based transfer laser coatings, most of them are compounded with acrylic resin or polyurethane resin and need to add defoamers and anti-adhesive additives. There are problems such as additive precipitation after long-term storage. Invented transfer-composite laser dual-purpose coating has not yet been related to patents or literature reports

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The A component is prepared according to the following method:

[0031] Polyneopentyl glycol-butylene adipate (Mn=1500) 15kg and polytetrahydrofuran ether-oxyethylene glycol (Mn=2000) 15kg and dicyclohexylmethane diisocyanate (HMDI) 20kg, isophor 8kg of ketone diisocyanate (IPDI) was copolymerized at 84-86°C. When the NCO content in the prepolymer reached 13%, 5kg of dimethylol butyric acid and 2kg of resorcinol bis(hydroxyethyl)ether were added, and Butanone 8kg and acetone 12kg mixed solvent to reduce the viscosity, then react until the NCO content will be 2%, then use 3.5kg triethylamine to neutralize, then add water 178kg to emulsify and disperse for 30min, and finally add isophoronediamine 5kg The chain was extended for 30 minutes to obtain component A.

[0032] The B component is prepared according to the following method:

[0033] Copolymerize 30kg of polyethylene adipate-hexanediol (Mn=3000) with 10kg of xylylene diisocyanate (XDI) and 8kg of toluene diisocyan...

Embodiment 2

[0039] The A component is prepared according to the following method:

[0040] Polyneopentyl glycol-butylene adipate (Mn=2000) 12kg and polytetrahydrofuran ether-oxyethylene glycol (Mn=2000) 18kg and dicyclohexylmethane diisocyanate (HMDI) 18kg, isophor Ketone diisocyanate (IPDI) 8kg is copolymerized at 84-86°C, when the NCO content in the prepolymer reaches 13%, add dimethylol butyric acid 6kg and resorcinol bis(hydroxyethyl) ether 1.5kg, and Add 5kg of methyl ethyl ketone and 15kg of acetone mixed solvent to reduce the viscosity, then react until the NCO content will be 2%, then use 3.5kg of triethylamine to neutralize, then add 165kg of water to emulsify and disperse for 30min, and then use isophoronediamine 4.5 After 30 min of chain extension, component A was obtained.

[0041] The B component is prepared according to the following method:

[0042] Copolymerize 30kg of polyethylene adipate-hexanediol (Mn=3000) with 15kg of xylylene diisocyanate (XDI) and 5kg of toluene dii...

Embodiment 3

[0048] A water-based polyurethane transfer composite dual-purpose coating, which is obtained by mixing three components of A, B, and C according to the weight ratio of 40:45:10;

[0049] Wherein A component is prepared according to the following method:

[0050] 10kg number-average molecular weight is 1500 polyneopentyl glycol adipate-butylene glycol ester, 10kg number-average molecular weight is 1000 polytetrahydrofuran ether-oxyethylene glycol, 20kg dicyclohexylmethane diisocyanate (HMDI), 5kg of isophorone diisocyanate (IPDI) was copolymerized at 85°C, when the NCO content in the prepolymer reached 13wt%, 4.5kg of dimethylol butyric acid and 1kg of resorcinol bis(hydroxyethyl ) ether, and add a mixed solvent composed of 5kg of butanone and 10kg of acetone to reduce the viscosity, then react until the NCO content is 2wt%, use 3kg of triethylamine to neutralize, then add 170kg of water to emulsify and disperse for 30min , and then use 2kg of isophorone diamine chain extensio...

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PUM

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Abstract

The invention relates to a transferring and compounding dual-purpose coating for waterborne polyurethane, a preparation method and an application thereof. The preparation method comprises the following steps: copolymerizing polyester polyol and polyether polyol with HMDI (Hexamethylene Diisocyanate), XDI (Xylylene Diisocyanate), IPDI (Isophorone Diisocyanate) and TDI (Toluene Diisocyanate); extending chains by using different chain extenders, thereby acquiring different components (components A and B); and lastly, adding a component C, stirring and milling, thereby preparing the coating. Compared with the prior art, the transferring and compounding dual-purpose coating for the waterborne polyurethane suitable for laser provided by the invention has the advantages of environmental protection and capability of enhancing anti-counterfeiting and illuminating effects and other effects, is suitable for a high-speed transferring aluminizing process, and can be applied to a compound package material, thereby realizing dual purpose of one material and meeting a demand on the packaging of products in modern society. The pilot scale production confirms that the transferring and compounding dual-purpose coating can be directly used for replacing a present related solvent-base coating.

Description

technical field [0001] The invention relates to an environment-friendly laser aluminized paint for tobacco packaging and its preparation method and application, in particular to a water-based polyurethane transfer composite dual-purpose paint and its preparation method and application. Background technique [0002] In recent decades, the transfer aluminum plating process has set off a revolution in the packaging material industry by virtue of its advantages of simple process and low cost. Promote apps. The basic performance of the transfer coating is its peelability, that is, how easy it is to peel off the base film (PET film, OPP film, etc.) cleanly. The quality of peelability can generally be characterized by the peeling force between the transfer coating and the base film. Transfer coatings with high peelability (very small peeling force) have always been a major difficulty in the research and development and application of transfer coatings, especially with the gradual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/06C09D175/08C09D7/12C08G18/66C08G18/61B05D7/04B05D3/02
Inventor 董海普朱先义段孔荣
Owner SHANGHAI CHENGYING NEW MATERIALS
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