Waterborne polyurethane printing ink connecting material and preparation method thereof

A technology of ink binder and water-based polyurethane, which can be used in ink, applications, household appliances, etc. It can solve the problems of poor emulsion stability, complicated process, and high cross-linking density, and achieve low surface tension, simple reaction process, and adhesion performance. enhanced effect
CN106432679AInactive Publication Date: 2017-02-22SOUTH CHINA UNIV OF TECH
4 Cites 17 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2017-02-22
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention belongs to the technical field of waterborne printing ink and discloses a waterborne polyurethane printing ink connecting material and a preparation method thereof. The preparation method includes the steps that oligomer polyhydric alcohol and polyisocyanate react, then a hydrophilic chain extender and an alcohol micromolecular chain extender are sequentially added for a chain extending reaction, and after a reaction product is diluted and neutralized, an NCO-base-terminated polyurethane prepolymer is obtained; the polyurethane prepolymer is subjected to phase inversion emulsion dispersion in water, then an amine chain extender and a silane coupling agent are added for a rear chain extending and cross-linking reaction, and the waterborne polyurethane printing ink connecting material is obtained. The obtained product has excellent water resistance, heat stability and adhesion firmness, and is safe, free of toxins and suitable for printing thin films for food packaging.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of water-based ink, and in particular relates to a water-based polyurethane ink binder and a preparation method thereof. Background technique

[0002] Water-based ink, referred to as ink, is made of binder, colorant, water and additives through compound grinding. It is the only one approved by the American Food and Drug Association because of its low VOC content, non-flammability, non-toxicity and no peculiar smell. environmentally friendly inks. Water-based inks are mainly used in gravure printing and flexographic printing. Most of the products are plastic films for packaging. They are mainly used in food packaging, tobacco and alcohol packaging, and children's toy packaging. The requirements are very high.

[0003] Binder is the key factor to determine the performance of water-based ink. In recent years, due to its safety, environmental protection and excellent application performance, water-based polyu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More