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Bonding agent and electro-optic assembly and electrophoretic medium thereof

An electro-optical and adhesive technology, applied in the direction of adhesive types, polyurea/polyurethane adhesives, film/sheet adhesives, etc., can solve the mechanical and electrical properties of polyester-based urethane emulsions. Medium, change the electrical properties of urethane emulsion, the electrical properties are not suitable for electro-optical displays, etc.

Inactive Publication Date: 2011-11-23
GUANGZHOU OED TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] However, the use of polyester-based urethane emulsions as laminating adhesives is still not a fully satisfactory compromise between the desired mechanical and electrical properties
Lamination adhesives with better mechanical properties are available, such as acrylic polymers and pressure-sensitive adhesives, but the electrical properties of these materials are not suitable for electro-optical displays
Additionally, there has so far been no satisfactory way to modify the electrical properties of urethane emulsions to "fine-tune" them to match those of a specific electro-optic medium

Method used

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  • Bonding agent and electro-optic assembly and electrophoretic medium thereof
  • Bonding agent and electro-optic assembly and electrophoretic medium thereof
  • Bonding agent and electro-optic assembly and electrophoretic medium thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0150] Example 1: Mixtures and performance tests comprising polymeric binder materials and additives

[0151] Weigh 100g of pre-prepared water-based polyurethane emulsion (polyurethane content is 50% (w / v)), add 3g of alcohol ester-12 into the water-based polyurethane emulsion, mix at a stirring speed of 250rpm, and mix for 1h. The mixture can be used for electronic Adhesive material for paper assembly, ie, material for lamination adhesive layer 180 (6 weight percent alcohol ester-12 to polyurethane). Tests were similarly performed with other amounts of alcohol ester-12.

[0152] After the mixture is prepared through the above method steps, the mixture (as the material for the lamination adhesive layer 180) can be accurately coated or printed on the electrophoretic ink layer (that is, the optical layer 130) by using a coating machine, and then heated and cured to obtain Electrophoretic display material layers. Then, the electrophoretic display material layer and the ITO cond...

Embodiment 2

[0160] Example 2: Mixtures and performance tests comprising polymeric binder materials and additives

[0161] Weigh 100g of pre-prepared water-based polyurethane emulsion (polyurethane content is 50% (w / v)), add 3g of propylene glycol into the water-based polyurethane emulsion, mix at a stirring speed of 250rpm, and mix for 1h. The mixture can be used for electronic paper assembly Adhesive material, that is, the material for the lamination adhesive layer 180 (the weight percentage of propylene glycol to polyurethane is 6%). Tests were similarly performed with other amounts of propylene glycol.

[0162] After the mixture is prepared through the above method steps, the mixture (as the material for the lamination adhesive layer 180) can be accurately coated or printed on the electrophoretic ink layer (that is, the optical layer 130) by using a coating machine, and then heated and cured to obtain Electrophoretic display material layers. Then, the electrophoretic display material...

Embodiment 3

[0170] Example 3: Mixtures and performance tests comprising polymeric binder materials and additives

[0171] Take by weighing 100g pre-prepared aqueous polyurethane emulsion (polyurethane content is 50% (w / v)), 5g alcohol ester-12 and 0.5g polystyrene copolymerized maleic anhydride sodium salt are added in aqueous polyurethane emulsion, the stirring speed of 250rpm Mixing is carried out, and the mixture after mixing for 1 hour can be used as an adhesive material for electronic paper assembly, that is, as a material for the lamination adhesive layer 180 (the weight percentage of propylene glycol to polyurethane is 6%). Tests were similarly performed with other amounts of propylene glycol.

[0172] After the mixture is prepared through the above method steps, the mixture (as the material for the lamination adhesive layer 180) can be accurately coated or printed on the electrophoretic ink layer (that is, the optical layer 130) by using a coating machine, and then heated and cure...

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Abstract

The invention discloses a bonding agent and an electro-optic assembly and an electrophoretic medium thereof. The electro-optic assembly comprises a first substrate, a second substrate, a boning agent layer positioned between the first substrate and the second substrate, and an electro-optic material layer positioned between the first substrate and the second substrate; and the bonding agent layer comprises a polymer boning agent material and an additive agent, wherein the additive agent is selected from propylene glycol ether, butyl carbitol, methoxyl methanol, ethylene glycol, propanediol, propanetriol, Texanol, adipate, phthalandione, lusolvan, FBH, Coasol, DBE-IB, DPnB, Dowanol PPh, alcohol ester-12, hexamethylene glycol, commercialization compositions thereof and combinations thereof. The invention further discloses the bonding agent layer, a double-stripping sheet and use of the bonding agent layer and the double-stripping sheet. The bonding agent layer has the advantages shown in specifications.

Description

technical field [0001] The invention relates to electro-optical components for the production of electro-optical displays, and materials for said components. More specifically, the present invention relates to adhesives and adhesive compositions having controlled volume resistivities, and electro-optical assemblies comprising such materials. The materials to which the present invention relates can also be used in applications other than electro-optic displays. Background technique [0002] An electro-optical display includes a layer of electro-optical material, which is a term used herein in the usual sense in the art for a material having at least one first and second display state that differs in optical property when compared to The material changes from its first display state to its second display state when an electric field is applied to the material. An optical property is usually the color perceived by the human eye, but can be another optical property such as opt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/01G02F1/167C09J7/02C09J11/06C09J175/04C09J131/04C09J123/08C09J163/00C09J133/00B32B5/00B32B7/12
Inventor 魏松丽张磊王海艺徐群星
Owner GUANGZHOU OED TECH INC
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