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Water-based scratch-resistant matt varnish and preparation method thereof

A scratch-resistant, water-based technology, applied in inks, household utensils, applications, etc., can solve problems such as limited matting ability, scratch resistance, and insufficient water-based matte oil matteness, and achieves low environmental and human health hazards and excellent strength And the effect of excellent resilience and scratch resistance

Pending Publication Date: 2020-12-29
SUZHOU BETELY POLYMER MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing water-based matte oils are not matt enough after printing and coating, and cannot meet the requirements of excellent adhesion on film substrates and ink varnishes at the same time
Although the addition of high-hardness powder can meet the performance requirements of scratch resistance to a certain extent, due to the limited encapsulation of the resin on the powder, the powder cannot be completely wrapped and floats on the surface of the ink, and there will still be scratch resistance.
Part of the water-based anti-scratch matte oil is modified by water-based high-density polymer wax slurry to improve scratch resistance, but the cost of water-based wax slurry is high, the compatibility selectivity with water-based resin is high, and the matting ability is limited , the above shortcomings limit the application of water-based wax slurry
Although the addition of a certain amount of surface slip additive can reduce the friction coefficient and improve the scratch resistance, but because the slip additive migrates to the film surface during the film formation process, the surface energy of the dummy oil is reduced, affecting The recoatability of the matte oil surface is limited, which limits the application range of the product

Method used

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  • Water-based scratch-resistant matt varnish and preparation method thereof
  • Water-based scratch-resistant matt varnish and preparation method thereof
  • Water-based scratch-resistant matt varnish and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A component

[0022]

[0023] B component

[0024] Water dispersible isocyanate curing agent 8 parts

[0025] 1 part methyl methacrylate

[0026] A kind of water-based anti-scratch dumb oil, its preparation method comprises the following steps:

[0027] Add polydimethylsiloxane to water and disperse at 200rpm for 5 minutes to obtain a polydimethylsiloxane dispersion;

[0028]Add methyl methacrylate to the water-dispersible isocyanate curing agent, and disperse at 200rpm for 5 minutes to obtain component B;

[0029] Add the wetting and leveling agent and defoamer to the water-based polyurethane while stirring, and disperse at a medium speed of 700rpm for 10 minutes; then add polydimethylsiloxane dispersion and water, reduce the speed and stir at a low speed of 400rpm for 3 Minutes; Finally, add water-based rheological agent while stirring and continue to stir at a low speed of 400rpm for 6 minutes to obtain the main agent, component A;

[0030] According to the w...

Embodiment 2

[0032] A component

[0033]

[0034] B component

[0035] Water dispersible isocyanate curing agent 8 parts

[0036] 1 part methyl methacrylate

[0037] A kind of water-based anti-scratch dumb oil, its preparation method comprises the following steps:

[0038] Add polydimethylsiloxane to water and disperse at 200rpm for 5 minutes to obtain a polydimethylsiloxane dispersion;

[0039] Add methyl methacrylate to the water-dispersible isocyanate curing agent, and disperse at 200rpm for 5 minutes to obtain component B;

[0040] Add the wetting and leveling agent and defoamer to the water-based polyurethane while stirring, and disperse at a medium speed of 600rpm for 10 minutes; then add polydimethylsiloxane dispersion and water, reduce the speed and stir at a low speed of 500rpm for 3 Minutes; Finally, add the water-based rheology agent while stirring and continue to stir at a low speed of 300rpm for 6 minutes to obtain the main agent, component A;

[0041] According to the...

Embodiment 3

[0043] A component

[0044]

[0045] B component

[0046] Water dispersible isocyanate curing agent 9 parts

[0047] 2 parts methyl methacrylate

[0048] A kind of water-based anti-scratch dumb oil, its preparation method comprises the following steps:

[0049] Add polydimethylsiloxane to water and disperse at 200rpm for 5 minutes to obtain a polydimethylsiloxane dispersion;

[0050] Add methyl methacrylate to the water-dispersible isocyanate curing agent, and disperse at 200rpm for 5 minutes to obtain component B;

[0051] Add the wetting and leveling agent and defoamer to the water-based polyurethane while stirring, and disperse at a medium speed of 800rpm for 10 minutes; then add polydimethylsiloxane dispersion and water, reduce the speed and stir at a low speed of 300rpm for 3 Minutes; Finally, add water-based rheological agent while stirring and continue to stir at a low speed of 400rpm for 6 minutes to obtain the main agent, component A;

[0052] According to the...

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Abstract

The invention discloses water-based scratch-resistant matt varnish, which comprises a main agent and a curing agent, wherein the main agent comprises water-based polyurethane, a leveling agent, an antifoaming agent, polysiloxane, a rheological agent and water, and the curing agent comprises isocyanate and methyl methacrylate. The method comprises: stirring waterborne polyurethane, a leveling agent, an antifoaming agent and polysiloxane, and then adding a rheological agent and water to obtain a main agent; and adding a diluted curing agent into the main agent to obtain the water-based scratch-resistant matt varnish. According to the invention, the water-based scratch-resistant matt varnish is prepared from water-based polyurethane, mixed ultra-high molecular weight polysiloxane, water as amain solvent and a water-dispersible isocyanate curing agent; and compared with the existing water-based scratch-resistant matt varnish, the scratch-resistant matt varnish disclosed by the invention is excellent in scratch resistance, good in adhesive force on the surfaces of most base materials and gloss oil and extremely low in the matte degree.

Description

technical field [0001] The invention belongs to coating ink technology, and in particular relates to a water-based scratch-resistant dumb oil and a preparation method thereof. Background technique [0002] Black matte ink for PET / PI can cover the defects of the product itself, beautifully decorate and protect. And compared with the glossy ink of the same product, because of its lower gloss, it feels more high-end and higher-grade. However, due to the use of matting powder, wax powder or talcum powder in matte inks, they are arranged to float on the surface to form a matte surface. When we use fingernails or sharp objects to scratch and press, the hardness of these dumb powder or wax powder particles is easy to be scraped and flattened, and the scraped and pressed places will be flat, and the gloss will be high and bright, showing a bright line marks, showing the performance characteristics of matte inks that are not resistant to scratches. At present, when faced with this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D4/06C09D7/63C09D7/65C09D7/20C09D11/107C09D11/03C09D11/033
CPCC09D4/06C09D11/03C09D11/033C09D11/107C09D7/20C09D7/63C09D7/65
Inventor 王亚东花魁昌汪小峰徐宏鲁斌欧阳旭频
Owner SUZHOU BETELY POLYMER MATERIALS CO LTD
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